CLASS 338, ELECTRICAL RESISTORS |
1 | COHERER TYPE |
This subclass is indented under the class definition. Subject matter wherein the resistance element has the property
of decreasing its resistance value upon the passage of a high frequency
current therethrough; or together with structure which enables the
resistor to return to its original resistance value upon termination
of the high frequency current or to decohere.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
2 | STRAIN GAUGE TYPE |
This subclass is indented under the class definition. Subject matter wherein a flexible or deformable solid mass
of resistance material is formed as a wire, strip, or other elongated mass,
the resistance value of the mass between points along its length
changing with deformation between the points, as a change in length or
cross-sectional area; the wire, strip, or other elongated mass being
shaped or configured to be applied to a device which is subject
to deformation in a direction along the length of the elongated
mass, the mass being adapted to deform with the device; or wherein
the wire, strip, or other elongated mass includes structure, such
as adhesive material on a flexible base, for facilitating application
to the device which is subject to deformation; or wherein the wire,
strip, or other elongated mass is combined with and deformable with
a device which is subject to deformation or other change in dimension
and not otherwise classifiable.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
3 | . With temperature compensation |
This subclass is indented under subclass 2. Subject matter including resistance structure in series
with the strain gauge resistor, whose resistance value increases
or decreases significantly with the temperature change, for the purpose
of offsetting at least partly the effect of temperature change on
the strain gauge resistor or furnishing a reference for comparison
purposes as in the Wheatstone bridge network in which the strain
gauge resistor may be connected.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
4 | . Fluid- or gas pressure-actuated |
This subclass is indented under subclass 2. Subject matter wherein the strain gauge is secured to or
otherwise mechanically linked with a diaphragm, bellows, piston,
or other device which is adapted to move or deform by a compresses
fluid or gas acting thereon.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
5 | . Dynamometer type |
This subclass is indented under subclass 2. Subject matter wherein the device to which the strain gauge
is attached is responsive to a force applied thereto, the portion
of the device to which the strain gauge is attached being deformed
by this force to deform the strain gauge.
SEE OR SEARCH CLASS:
| |||||||||
6 | . Extensometer type |
This subclass is indented under subclass 2. Subject matter wherein the strain gauge includes structure,
such as pins, for engaging two spaced points for sensing any changes
in the spacing of these two points, and for transmitting this sensed
spacing change to the strain gauge to cause deformation thereof.
SEE OR SEARCH CLASS:
| |||||
7 | RESISTANCE VALUE TEMPERATURE-COMPENSATED |
This subclass is indented under the class definition. Subject matter wherein the resistance element is formed
of materials whose resistance value changes a relatively small amount
with a change in the temperature of the element; or wherein one
resistance material is combined with another resistance material
in the same or different resistance elements, the change of resistance
value of one material with the temperature of the material being
such as to offset at least partly the change of resistance value
of the other material with the temperature of this material, the
materials being always at the same temperature, e.g., one material
has a positive temperature coefficient and the other material has
a correspondingly negative temperature coefficient; or wherein the
support or actuator for the resistor includes material or structure which
offsets at least partly the effect of or resists dimensional changes
due to temperature change in the support or actuator, which otherwise
would result in a change in resistance value.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
8 | . Temperature-compensated actuator |
This subclass is indented under subclass 7. Subject matter, including structure or material which is directly operative on the actuator to offset the effect of or reduce or prevent a change in dimension of the actuator due to temperature change. | |
9 | . With additional compensating resistor or resistance element |
This subclass is indented under subclass 7. Subject matter including an additional resistor or resistance
element, whose temperature coefficient is of opposite sign (positive
or negative) from the temperature coefficient of the original resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
10 | .. Filament or wire resistance elements |
This subclass is indented under subclass 9. Subject matter wherein both the resistance elements or the resistance elements of both resistors are elongated in shape, as wires or filaments. | |
11 | REFLECTOR DIRECTS HEAT ON ELEMENT |
This subclass is indented under the class definition. Subject matter including structure which is spaced from
and positioned with respect to the resistance element to redirect
any heat impinging on the structure from an external source onto
the resistance element, or to redirect any heat produced by the
resistance element and impinging on the structure back on the resistance
element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
12 | MOVABLE MAGNET ACTUATES RESISTOR THROUGH HOUSING OR PARTITION |
This subclass is indented under the class definition. Subject matter including a mechanically variable resistor
together with a partition, wall, or housing; and a movable magnet,
usually permanent, which when moved is effective by its field through
the partition, wall, or housing to change the mechanical setting
of the variable resistor and thus change the resistance value of the
variable resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
13 | RESISTANCE VALUE RESPONSIVE TO A CONDITION |
This subclass is indented under the class definition. Subject matter including a resistor usually mechanically
variable to change its resistance value, linked with actuating structure which
senses and responds significantly well to a particular stimulus
or condition or change in such stimulus or condition; or including
a resistor, usually nonmechanically variable, having the property
as by shape or chemical composition of changing its resistance value
significantly well in response to a particular stimulus or condition
or change in such stimulus or condition; and usually together with
structure as part of the resistor or in addition to the resistor for
applying or facilitating the application of this stimulus or condition
to the resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||||||
14 | . Plural conditions |
This subclass is indented under subclass 13. Subject matter including two or more actuating structures together with a variable resistor each responsive to an independent stimulus or condition, which may be of the same or different type; or including a resistor whose element has the property of changing its resistance value particularly well in response to two or more independent conditions or stimuli applied thereto; or including a variable resistor whose element is responsive directly to a condition together with an actuator responsive to an independent condition. | |
15 | . Photoconductive (e.g., light sensitive) |
This subclass is indented under subclass 13. Subject matter wherein the resistor is formed of a material
whose resistance value changes materially upon the application of
light, infrared radiation, or ultraviolet radiation to the resistor,
or upon a change in the intensity of this radiation applied to the
resistor together with any structure which facilitates the application
of light or ultra violet or infrared radiation to the resistor.
SEE OR SEARCH CLASS:
| |||||||||
16 | .. With vibration control |
This subclass is indented under subclass 15. Subject matter including structure for eliminating or reducing
vibration or offsetting the effect thereof, as a shock absorbing
support for the resistance element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
17 | .. Plural resistance elements (e.g., mosaic) |
This subclass is indented under subclass 15. Subject matter including two or more resistors as there
defined or a single resistor having two or more elements.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
18 | .. Infrared radiation |
This subclass is indented under subclass 15. Subject matter wherein the material of which the resistor
is formed changes its resistance value materially upon the application
of infra red radiation thereto.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
19 | .. With transparent housing |
This subclass is indented under subclass 15. Subject matter including a casing or covering such as a
glass or quartz envelope containing the photoconductive element,
at least a portion of the casing or covering freely passing the radiant
energy which impinges on the photoconductive element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
20 | . Current and/or voltage (e.g., ballast resistor) |
This subclass is indented under subclass 13. Subject matter wherein the resistor is chemically constituted
or otherwise formed to change its resistance value in response to
an electric current passing through or a voltage impressed across
the resistor, or wherein the resistor includes structure or composition
which enables the resistor to change its resistance value in response
to a current or voltage applied to a circuit other than to the resistor itself;
as to an electric heater with a heat conducting path to the resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
21 | .. Voltage surge-responsive or lightning arrester type |
This subclass is indented under subclass 20. Subject matter wherein the resistance element is formed
of material whose resistance value changes sharply and often discontinuously upon
a change in terminal voltage from a low to a relatively high value
or upon a rise in the terminal voltage above a threshold value.
SEE OR SEARCH CLASS:
| |||
22R | .. Thermistor type |
This subclass is indented under subclass 20. Subject matter wherein the resistance element is formed
of a semi-conductor material and has a relatively high temperature
coefficient, which is usually negative.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
23 | ... Indirectly heated |
This subclass is indented under subclass 22. Subject matter wherein a resistance heater for the thermistor
is provided other than the thermistor resistance and in a current
circuit distinct from the current circuit through the thermistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
22SD | ... Semiconductor |
This subclass has no definition. | |
24 | .. Indirectly heated |
This subclass is indented under subclass 20. Subject matter wherein a resistance heater for the resistor
is provided other than the resistance element and in a current circuit
distinct from the current circuit through the element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
25 | . Ambient temperature |
This subclass is indented under subclass 13. Subject matter wherein the resistance element includes material
which effects a significant change, such as sharp, rapid, or pronounced,
in the resistance value of the element with a change in the surrounding
temperature, or together with structure which facilitates this change
in resistance value with the surrounding temperature; or including
a mechanically adjustable or variable resistor together with structure
whose shape, configuration or any other dimension changes with a
change in surrounding temperature, the structure being linked with
the adjustable or variable resistor to change in resistance value
with the change in shape, configuration or other dimension occurring
in the temperature sensing structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||
26 | .. Cable or tape type (e.g., fire-detecting cable) |
This subclass is indented under subclass 25. Subject matter wherein the resistor is flexible or deformable
and has an elongated shape with substantially uniform external size
over its length, the resistance element extending between the ends
of the resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
27 | .. Liquid contact or element |
This subclass is indented under subclass 25. Subject matter wherein the resistance element or contact
is a liquid, the liquid sensing the change in the surrounding temperature.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
28 | .. Probe type |
This subclass is indented under subclass 25. Subject matter wherein the resistor is formed as an elongated
rigid unit, one end being free and the other end including the resistor
terminal or the portions of the terminals connecting the external
circuitry, as well as any structure for manipulating the unit, such
as a handle, or for securing the unit to supporting structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
29 | ... Mechanically adjustable or variable |
This subclass is indented under subclass 28. Subject matter including a mechanically adjustable or variable
resistor as defined in subclass 68 below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
30 | ... Terminal forms casing or housing |
This subclass is indented under subclass 28. Subject matter wherein one or both of the terminals form
a substantial part of the probe casing or housing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
31 | .. Mechanically adjustable or variable |
This subclass is indented under subclass 25. Subject matter including a mechanically adjustable or variable
resistor as defined in subclass 68 below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
32R | . Magnetic field or compass (e.g., Hall effect type) |
This subclass is indented under subclass 13. Subject matter wherein the resistance element includes material
whose resistance value is dependent on a magnetic field applied
directly thereto, or together with means for applying or facilitating
the application of a magnetic field to this material of the resistance
element; or wherein a resistor is mechanically linked with the magnet
of a magnetic compass to be actuated by this magnet.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
32H | .. Hall effect |
This subclass has no definition. | |
32S | .. Superconductors |
This subclass has no definition. | |
33 | . Float actuator |
This subclass is indented under subclass 13. Subject matter wherein an adjustable resistor is combined
with a float, which is mechanically linked with the resistor actuator
to vary the resistance value in accordance with the position of
the float.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||
34 | . Gas, vapor, or moisture absorbing or collecting |
This subclass is indented under subclass 13. Subject matter including material or structure which readily
absorbs or collects or facilitates the absorption or collection
of fluent material such as liquids, gases, vapors, or humidity to which
the resistor may be exposed, and usually which relinquishes all
or part of the fluent material so absorbed or collected upon reduction
in the intensity or termination of the exposure thereto, the material
so collected or absorbed usually providing the electrical resistance,
the value of the resistance depending on the amount of material
absorbed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||
35 | .. Humidity |
This subclass is indented under subclass 34. Subject matter wherein the resistor is peculiarly adopted
to collect or absorb moisture from the air.
SEE OR SEARCH CLASS:
| |||
36 | . Fluid- or gas pressure-actuated |
This subclass is indented under subclass 13. Subject matter wherein the condition sensed is fluid or
gas pressure and the resistor actuator engages this fluid or gas
and is mechanically moved or deformed by the pressure of this fluid or
gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
37 | .. Vehicle tire inflation |
This subclass is indented under subclass 36. Subject matter wherein the condition sensed is the air pressure
in the tire of a vehicle, and including structure for sensing this
pressure and not otherwise classifiable.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
38 | .. Liquid resistance element or contact |
This subclass is indented under subclass 36. Subject matter wherein a liquid resistance element or contact
is arranged to rise and fall over contact or resistance structure
to give a variable resistance according to the condition sensed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
39 | .. Piston |
This subclass is indented under subclass 36. Subject matter wherein the resistor actuator is a piston
or plunger.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
40 | .. Bourdon tube |
This subclass is indented under subclass 36. Subject matter wherein the resistor actuator is a Bourdon
tube.
SEE OR SEARCH CLASS:
| |||||
41 | .. Bellows or capsule |
This subclass is indented under subclass 36. Subject matter wherein a cylindrical or cup shaped expansible
chamber has side walls comprising sections of alternately larger
and smaller cross-sections which make up a single fluid or gas chamber
having a zigzag or pleated wall, or wherein an expansible chamber
device includes a plurality of movable walls, two or more of which
are of the flexible sheet material or diaphragm type whereby vertical
collapse or expansion of the chamber is facilitated.
SEE OR SEARCH CLASS:
| |||
42 | .. Diaphragm |
This subclass is indented under subclass 36. Subject matter wherein the resistor actuator is a diaphragm,
or a flexible or deformable wall or casing structure.
SEE OR SEARCH CLASS:
| |||
43 | . Gravity stabilized or inertia actuator |
This subclass is indented under subclass 13. Subject matter wherein the actuator or reference for the
actuator is a mass which is at least partly free to operate under
the effect of its inertia, or under the effect of its weight to
seek a lower level and thus maintain a vertical stabilization as
for reference purposes.
SEE OR SEARCH CLASS:
| |||
44 | .. Liquid resistance element or contact |
This subclass is indented under subclass 43. Subject matter wherein the resistance element or its contact
is a liquid, and the actuator is this liquid element or contact,
which is operated by its inertia or level seeking characteristic.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
45 | .. Centrifugal |
This subclass is indented under subclass 43. Subject matter wherein the actuator is subject to rotation
to thus develop a centrifugal force to control the variable resistor.
SEE OR SEARCH CLASS:
| |||||
46 | .. Pendulum |
This subclass is indented under subclass 43. Subject matter wherein the actuator for the variable resistor
is a pendulum.
SEE OR SEARCH CLASS:
| |||||
47 | . Force-actuated |
This subclass is indented under subclass 13. Subject matter wherein the actuator is constructed to facilitate
the application of a force thereto, and to mechanically move or
deform in response to this force to provide a mechanical movement
for the operation of the variable resistor, the force being substantially
greater than necessary to operate the resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||
48 | PLURAL SEPARATE DIVERSE RESISTORS |
This subclass is indented under the class definition. Subject matter wherein a first resistor is combined with
a physically distinct second resistor which is significantly structurally
different from the first resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||||
49 | SHUNT TYPE |
This subclass is indented under the class definition. Subject matter wherein the resistor is peculiarly adapted
for shunting a metering instrument, the resistor terminals usually
being of large mass and having a plurality of sets of connectors,
one smaller set for the instrument and the other larger set for
the main current leads, the resistance element extending therebetween
and usually being flat or formed with ventilating means such as
fine or vented passages, or with a plurality of separate current paths
to present a large cooling surface to maintain uniform temperature
and prevent change in the resistance value or the resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
50 | MOUNTED ON WHEELS OR VEHICLE |
This subclass is indented under the class definition. Subject matter wherein the resistor is provided with wheels
for increasing the mobility of the vehicle, or wherein the resistor
is mounted on a vehicle especially adapted for carrying only the
resistor together with its operating structure or a plurality of
such resistors.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
51 | WITH HEAT DISSIPATING PROJECTIONS (E.G., VANES) |
This subclass is indented under the class definition. Subject matter wherein a surface of the resistance element,
casing, terminal, or other resistance structure is enlarged or increased
in area over what is otherwise necessary by a projecting portion
integral therewith or attached thereto, such as vanes, fins, or
corrugations, to increase the heat radiated, dissipated, or otherwise
transferred from the surface structure of the resistor to the surrounding
or adjacent medium.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
52 | . Granular, powdered, or transversely stacked resistance element |
This subclass is indented under subclass 51. Subject matter wherein the resistance element is granular
or powdered in form or is formed as a plurality of layers or other
distinct masses stacked or piled transversely to the direction of current
flow through the resistance element; i.e., so that the current flowing
through the resistance element will flow from mass to mass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
53 | WITH COOLING GAS OR LIQUID CIRCULATION |
This subclass is indented under the class definition. Subject matter wherein the resistor includes structure which
conveys a cooling gas or liquid to, from or through the resistor,
or which permits a cooling gas or liquid to move to or from the
resistor for the purpose of cooling the resistor by conveying away
the heat produced by the resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||
54 | . Element granular, powdered, or stacked between terminals |
This subclass is indented under subclass 52. Subject matter wherein the resistance element is granular
or powdered in form or is formed as a plurality of layers or other
distinct masses stacked or piled transversely to the direction of current
flow through the resistance element, i.e., so that the current flowing
through the resistance element will flow from mass to mass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
55 | . With cooling liquid circulation |
This subclass is indented under subclass 53. Subject matter including means for conveying or facilitating
the conveyance of liquid to or from the resistance element or terminals,
or to structure in heat conducting relation to the element to carry
away at least part of the heat produced by the element or terminals
by motion of the liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
56 | .. Liquid resistance element circulates |
This subclass is indented under subclass 55. Subject matter wherein the circulating or moving liquid
is also the resistance element, and by such circulation or motion
the element is cooled or cools itself.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
57 | . Vented or ventilating casing or housing |
This subclass is indented under subclass 53. Subject matter including a casing or housing of solid material
which substantially entirely encloses the resistance element, the
casing or housing having openings therein joining the resistance
element with the surrounding medium to permit circulation of air
or other gases to and from the resistance element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||
58 | . Ventilated helical or zigzag element |
This subclass is indented under subclass 53. Subject matter wherein the resistor is of zigzag or helical
type as defined in subclasses 283 and 296 respectively below, together
with structure which transmits or facilitates the transmission of
air or other gases to and into contact with the resistance element
for cooling purposes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
59 | WITH HEAT-STORING |
This subclass is indented under the class definition. Subject matter wherein the resistor includes or is combined
with a mass of material which is adapted to absorb and retain significantly
well the heat produced by the resistance element, or the heat existing
in the medium surrounding the resistor, or structure which is peculiarly
adapted to support such a mass in or on the resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
60 | WITH CAPACITY-REDUCING |
This subclass is indented under the class definition. Subject matter wherein the resistor includes distinct structure
or arrangement of parts which reduce or eliminate the resistor capacity
or the effect of the resistor capacity in the resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
61 | WITH INDUCTANCE-REDUCING |
This subclass is indented under the class definition. Subject matter wherein the resistor includes distinct structure
or arrangement of parts which reduce or eliminate the resistor inductance
or the effect of the resistor inductance in the resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
62 | . Helical or wound element |
This subclass is indented under subclass 61. Subject matter wherein the resistor includes an elongated
resistance element formed as two or more continuous closed coils
or loops as a spiral, helix, or toroidal winding as defined in subclass
296 below, together with additional structure or arrangement of
the coils or loops for reducing or eliminating the inductance or the
effect thereof of the coils or loops.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
63 | .. Bifilar |
This subclass is indented under subclass 62. Subject matter, wherein the helical or wound resistance element is doubled on itself, the bight being at one end of the winding and the doubled portions of the resistance element being disposed side by side in parallel and extending towards the other end in a helical or wound pattern. | |
64 | WITH ELECTRICAL SHIELD |
This subclass is indented under the class definition. Subject matter including a barrier or screen for shielding
at least a part of the resistor device from external electrical,
magnetic, or electro-magnetic fields, or for protecting parts of
the device from such fields originating in another part of the device,
of for preventing the resistor device from emanating such fields
or waves containing such fields.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||
65 | . Mechanically variable resistor |
This subclass is indented under subclass 64. Subject matter wherein the resistor is of the mechanically
variable type as defined in subclass 68 below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
66 | IGNITION INTERFERENCE SUPPRESSOR TYPE |
This subclass is indented under the class definition. Resistors which when inserted in an ignition circuit are
particularly well adapted for the suppression of undesired currents
in the circuits, which would otherwise produce electrical disturbances,
and are characterized by having usually a heavy ceramic insulation
casing, a heavy granular bonded mixture as the material for the
resistance element incased in the insulating casing, and diverse
quick detachable terminals as one being the plug type and the other
being of the socket type.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
67 | WITH DIVERSE NONELECTRICAL DEVICE (E.G., MECHANICAL OR CHEMICAL) |
This subclass is indented under the class definition. Subject matter wherein the resistor is combined with some
other nonelectrical device or structure, for example, of a mechanical
or chemical type, having an added purpose or independent utility
other than to perfect the resistor, and not otherwise classifiable.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||
68 | MECHANICALLY VARIABLE (E.G., RHEOSTAT) |
This subclass is indented under the class definition. Subject matter including a resistance element together with
structure for changing a dimension of the resistance element or
the effective portion of the resistance element between terminals,
as a change in the cross-sectional area or an increase in length
of the portion of the resistance element between the terminals;
and/or wherein the resistance element is readily adapted
or at least adapted for such change in a dimension; or including
structure permitting a ready change in the position or point of
electrical connection of one or more of the terminals on the resistance
element to cause a different portion of the element to be in electrical
circuit between the terminals; or including conducting structure
which adjustably short-circuits a portion of the resistance element
between terminals; or including switching structure which alters
the resistance portion of the resistance element in electrical circuit
between terminals or which changes the circuit relationship of the
resistance element and other resistance elements or which permits the
resistance elements to be changed in or removed from the circuit;
the result in any of the above being a change in the resistance value
between the resistance terminals or the terminals in the circuit
including the resistance element; or wherein the resistance element
is adapted for or combined with structure for mechanically changing
in some manner the resistance element or the combination including
the resistance element; or including any other means or adaption
of the resistance element or elements for mechanically changing
an arrangement of or effecting a mechanical change in the resistance
element or elements to achieve the above mentioned result.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||||||||||||||||
69 | . Musical instrument playing key actuated |
This subclass is indented under subclass 68. Subject matter wherein a musical instrument playing key
(usually an organ key) is linked with the mechanically adjustable
or variable part of the resistor to change the resistance value
in accordance with the depression of the key.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
70 | . In or on lamp socket |
This subclass is indented under subclass 68. Subject matter including a lamp socket together with a resistor
as defined in subclass 68 positioned within the socket, or directly
on and in engagement with the surface of the socket, and in circuit
with the terminal or terminals of the socket.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
71 | .. Resistor surfaces pressed together (e.g., compressible type) |
This subclass is indented under subclass 70. Subject matter wherein the resistor includes (1) two or
more separate and distinct masses, including grains, of resistance
material, or (2) a distinct and separate mass of resistance material
and a mass of conductive material are in exterior surface engagement
with one another, together with means for varying the surface engagement
pressure to vary the contact resistance between the engaging surfaces,
i.e., the resistor is of the type defined in subclass 99 below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
72 | .. Resistor with intervening connector between contact and element (e.g., taps) |
This subclass is indented under subclass 70. Subject matter wherein the resistor, a plurality of otherwise
electrically separate conducting structures, are each electrically
connected to an elongated resistance element along its length, and
a terminal movable among the conducting structures to constitute
a contact on such structures as defined in subclass 185 below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
73 | .. Resistor with contact angularly slidable on element |
This subclass is indented under subclass 70. Subject matter wherein the resistor, a movable contact,
pivots about an axis to slide in a circular path along a resistance
element as defined in subclasses 162+ below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
74 | .. Resistor with contact rectilinearly slidable on element |
This subclass is indented under subclass 70. Subject matter wherein in the resistor, the contact terminal,
moves in a straight path over or along a resistance element, the
contact terminal remaining in contact with the element as it slides
along as defined in subclass 176 below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
75 | . With resistor cleaner |
This subclass is indented under subclass 68. Subject matter including structure, such as a wiper, for removing dirt or other material from the resistor, as from the contacting surfaces of the resistance element or the contact movable thereon. | |
76 | . Interchangeable resistors of different resistance value |
This subclass is indented under subclass 68. Subject matter including two or more physically similar
resistors of different resistance values together with means effecting
or permitting a change or substitution of one resistor for the other
in an associated electrical circuit, i.e., both terminals of one
resistor are separable from the electrical circuit and the terminals
of the other resistor are connected in the electrical circuit in
a corresponding position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
77 | . Plug boxes |
This subclass is indented under subclass 68. Subject matter including a base or panel having a single
resistor or a plurality of resistors mounted thereon or in a box
or housing, the panel constituting a cover therefor, together with
terminals mounted on the panel and electrically connected along
the length of a single resistor or to the ends of the plurality
of resistors, the terminals having openings therein or providing
openings; and including also terminal plugs adapted to be removably
inserted in the openings to short-circuit respective resistors or
portions thereof, or to connect the resistors in series or parallel.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
78 | . With current reversing (e.g., reversing rheostat) |
This subclass is indented under subclass 68. Subject matter wherein a resistor or plurality of resistors
as there defined is combined with or includes an electric switch
in a common electric circuit, the switch being effective to reverse
the electric current at the output terminals of the resistor with
respect to the current applied at the input terminals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
79 | . With element winding and/or unwinding |
This subclass is indented under subclass 68. Subject matter wherein the resistance element is wound on
a core, and is adapted to be unwound therefrom as on a second core
to change the value of the resistance between terminals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
80 | . Liquid resistance element |
This subclass is indented under subclass 68. Subject matter wherein the resistance element is a liquid,
the resistance value of the resistor being changed as by modifying
the dimensions of the element or the spacing between terminals or
electrodes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||
81 | .. Electrode separable from liquid element for switching |
This subclass is indented under subclass 80. Subject matter wherein one of the terminals or electrodes
is removable from the liquid resistance element, as by raising the
electrode from the liquid element or by lowering the level of the
liquid element from the electrode, thus to make and break the circuit
between the liquid element and the electrode.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
82 | .. Adjustable insulating barrier between electrodes |
This subclass is indented under subclass 80. Subject matter including an insulating barrier or curtain
which is positioned transversely to the current path through the
liquid element between the electrodes, the barrier or curtain being
adjustable in and out of this current path to change the effective
length of the current path between the electrodes and/or
the effective cross-sectional area of the path between the electrodes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
83 | .. Variable electrode separation |
This subclass is indented under subclass 80. Subject matter wherein one of the terminals or electrodes
in the liquid element is movable with respect to another electrode
or terminal in the element to effect a change in the distance between
the electrodes to change the resistance value between the terminals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
84 | ... Plural ganged electrodes |
This subclass is indented under subclass 83. Subject matter wherein a plurality of resistors as there
defined have an electrode of one mechanically linked with a corresponding
electrode of another so that the two electrodes move in unison through
the liquid element of the respective resistors; or wherein a single resistor
as there defined includes a plurality of electrodes which are mechanically
linked together to move in unison through the liquid element of
the resistor toward and away from another electrode of the resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
85 | ... Electrode rotatable |
This subclass is indented under subclass 83. Subject matter wherein at least one of the electrodes is
rotatable to effect the change in distance through the liquid element
to another electrode.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
86 | .. Level of liquid element adjustable on electrodes (e.g., electrodes move up and down in element) |
This subclass is indented under subclass 80. Subject matter including structure for raising or lowering
the level of the liquid resistance element with respect to the electrodes
inserted in the liquid element; or including structure for moving
or permitting movement of the electrodes up and down in the liquid
element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
87 | . Contact adjustably inserted into resistance element (e.g., penetrating type) |
This subclass is indented under subclass 68. Subject matter wherein a contact extends into the resistance
element and is movable therein to vary the spacing through this
resistance element between this contact and another contact, thus
to vary the resistance value between the contacts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
88 | .. Powdered element |
This subclass is indented under subclass 87. Subject matter wherein the resistance element is granular
or powdered, the contact usually being formed as a pin or other
elongated object to penetrate into the powdered or granular element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
89 | . Mathematical function (e.g., sine-cosine potentiometer) |
This subclass is indented under subclass 68. Subject matter wherein, in the variable resistor, a definite
mathematical relationship exists between movement of the resistor
actuating means and the value of the resistance appearing across
the resistor terminals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||
90 | .. With slab or card-type resistance element |
This subclass is indented under subclass 89. Subject matter wherein the resistance element is formed
as a surface having significant width as well as length, together
with a contactor relatively movable not only lengthwise but crosswise
over the surface of the element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
91 | .. With mechanical converter |
This subclass is indented under subclass 89. Subject matter including a mechanical linkage in or an arrangement
of the resistor actuator producing some peculiar operating characteristic
to contribute to the mathematical relationship.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
92 | . Resistance element adjustably short-circuited |
This subclass is indented under subclass 68. Subject matter wherein the resistor includes an elongated
element together with conductive structure connected at spaced points
being adjustable along the length of the element; or wherein the
resistance element is bent upon itself so that two points along
the length of the element adjustably contact electrically to effectively
eliminate electrically the portion between the two points from the
electric path through the resistor, i.e., a variable portion of the
resistance element is shunted; or wherein a conducting mass such
as a liquid is adjustably connected along the length of the element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
93 | .. Compressible spring type |
This subclass is indented under subclass 92. Subject matter in which the resistance element is formed
as a compressible spring (usually helical), the convolutions of
the spring coming into contact upon compression to short-circuit at
least a portion of the length of the resistance element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
94 | .. Liquid contact |
This subclass is indented under subclass 92. Subject matter including a conducting liquid as the resistance
element short circuiting means, a portion of the elongated resistance
element being adjustably inserted in the conducting liquid to short-circuit
the portion of the element so inserted, or the conducting liquid
being adjustable along any intervening structure, if present, such
as taps.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
95 | .. With intervening structure between element and short-circuiting means (e.g., taps) |
This subclass is indented under subclass 92. Subject matter wherein a plurality of otherwise electrically
separate conducting structures are each electrically connected to
the resistance element along its length, the short circuiting structure
being adjustably connected between these conducting structures.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
96 | .. Spring contact strip progressively pressed along element |
This subclass is indented under subclass 92. Subject matter wherein a flexible elongated conductor has
an end electrically connected to a terminal of the resistance element
or to the element itself at a point along its length, the conductor
being adapted to be pressed into engagement with and along the length
of the elongated conductor, the engaging portion extending from
the connection to the resistance element and progressively increasing
as the strip is pressed into contact with the element, whereby an
adjustable length of the element is shunted by the conductor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
97 | .. Unitary movable contact electrically bridges resistance portions |
This subclass is indented under subclass 92. Subject matter wherein the resistance element has portions
extending in parallel spaced relationship and a conducting bridge
extending between the parallel portions being movable lengthwise
therealong.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
98 | . With motion or vibration damping means (e.g., dashpots) |
This subclass is indented under subclass 68. Subject matter including structure associated with the mechanically
adjustable portion of the resistor for retarding the adjustment
of the resistor over at least a portion of the adjustment range,
or for eliminating or reducing vibration.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||
99 | . Surfaces pressed together (e.g., compressible type) |
This subclass is indented under subclass 68. Subject matter wherein (1) two or more separate and distinct
masses, including grains, of resistance material or (2) a distinct
and separate mass of resistance material and a mass of conductive
material are in exterior surface engagement with one another, together
with means for varying the surface engagement pressure to vary the
contact resistance between the engaging surfaces.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||
100 | .. Granular |
This subclass is indented under subclass 99. Subject matter wherein at least one of the resistance masses
is granular or powdered in form.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
101 | .. Pile type |
This subclass is indented under subclass 99. Subject matter wherein two or more masses of resistance
material are formed as wafers or discs and are disposed on top of
one another to form a pile, the engagement pressure being applied
axially along the pile.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
102 | ... With contactor moving along pile |
This subclass is indented under subclass 101. Subject matter together with a contact which is adjustable
along the length of the pile to permit a varying portion of the
pile to be connected in the circuit associated with the contact.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
103 | ... With electromagnetic operator (e.g., electric motor) |
This subclass is indented under subclass 101. Subject matter including an electromechanical transducer
such as an electric motor or a magnetic relay, the moving part such
as the armature of the transducer being mechanically linked with
the piles to compress or to release the pressure on the piles upon
application of electric energy to the transducer.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
104 | .... Force applied at both ends of pile |
This subclass is indented under subclass 103. Subject matter including two electromagnetic operators each
applying a positive compressive or releasing force to a respective
end of the pile, or a linkage connected with a single electromagnetic
operator for applying a positive compressive or releasing force
to both ends of the pile.
| |||
105 | .... With diaphragm-type biasing spring |
This subclass is indented under subclass 103. Subject matter including a biasing spring usually disc shaped
coaxially disposed at an end of the pile between the pile and the
electromagnetic operator for exerting a compressive or releasing
force on the pile in opposition to the force applied by the electromagnetic
operator.
| |||
106 | .... With initial pressure adjustment |
This subclass is indented under subclass 103. Subject matter including structure such as a screw for applying
a compressive force on the pile in addition to that applied by the
electromagnetic operator, or on the spring, if any, which exerts
a pressure releasing force on the pile in opposition to that exerted
by the electromagnetic operator, the structure being adjustable
as to compensate for surface wear in the piles during use.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
107 | ... With electromagnetic holder |
This subclass is indented under subclass 101. Subject matter including a retaining or positioning magnet
for locking or holding the pressure controlling means in a predetermined position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
108 | ... Pedal- or treadle-operated |
This subclass is indented under subclass 101. Subject matter including structure mechanically linked with
the means for varying the engagement pressure of the contact surfaces, and
peculiarly adapted for operation by the foot or knee, as by being
operable by a push, and including structure such as a spring for
returning to the initial position upon removal of the pushing force,
and including a portion shaped to facilitate engagement with the
foot as by being shaped like the sole of the foot or having a substantially
flat foot engaging surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
109 | ... With initial pressure adjustment |
This subclass is indented under subclass 101. Subject matter including structure such as a screw for applying
a compressive force to the pile in addition to that applied by the
structure normally varying the resistance value of the pile as by
compression, the first mentioned structure being adjustable as to
compensate for surface wear in the piles during use.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
110 | ... With switch actuated by resistor actuator |
This subclass is indented under subclass 101. Subject matter including a switch, which is operatively
linked with the means for varying the engagement pressure of the
engaging surfaces.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
111 | ... With intervening conducting structure |
This subclass is indented under subclass 101. Subject matter wherein a layer or coating of conducting
material is provided between two adjacent wafers of the pile.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
112 | ... Contact surface area of piles variable |
This subclass is indented under subclass 101. Subject matter wherein normally only a portion of the facing
surfaces of the pile discs are in actual physical contact, the discs
being flexible or resilient, the means for varying the engagement
pressure and when actuated increasing and/or decreasing
the portion of the facing surfaces in actual physical contact.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
113 | ... With resilient pressure-applying linkage |
This subclass is indented under subclass 101. Subject matter wherein the means for varying the contact
pressure includes a resilient spring in the linkage which transmits
the pressure to the pile or on the end of the pile opposite to that
where the compressive force is applied, the spring serving to progressively
apply the contact pressure to the pile.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
114 | . Deformable |
This subclass is indented under subclass 68. Subject matter including a flexible or deformable unitary
mass of resistance material together with structure for modifying
the shape of the mass, as by increasing the length or reducing the
cross sectional area of the mass between terminals, to change the
resistance value between the terminals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
115 | . Element in piled or stacked layers |
This subclass is indented under subclass 68. Subject matter wherein the element is formed of a plurality
of layers of resistance material which layers are piled or stacked
transversely to the direction of current flow through the resistance
element, i.e., so that the current flowing through the resistance
element will flow from pile to pile.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||
116 | . With electromagnetic operator (e.g., electric motor) |
This subclass is indented under subclass 68. Subject matter including an electromechanical transducer
such as a electric motor or a magnetic relay, the moving part such
as the armature of the transducer being mechanically linked with
a mechanically moving operating part of the resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||
117 | . Slidable coextensive helical and linear contacts |
This subclass is indented under subclass 68. Subject matter wherein a resistor whose element is usually
a cylindrical helix presents a cylindrical helical contact portion
of one turn or less on the surface of the element or a cylindrical
helical row of taps of one turn or less electrically connected to
the resistance element to a linear contacting member or linear row
of taps extending alongside and coextensive with the helical contact
portion or row of taps, the helical contact portion or row of taps
being rotatable to move the point of contact along the length of
the helical contact portion or helical row of taps and along the
length of the linear contacting member or linear row of taps; or wherein
a resistor whose element is usually a cylindrical helix presents
a linear contact portion on its surface or a linear row of taps
electrically connected with the resistance element to a cylindrical
helical contacting member of one turn or less or to a cylindrical
helical row of taps of one turn or less or to an elongated flat
twisted contacting member, the twist being through 1805 or less,
the contacting member or helical row of taps extending alongside
and coextensive with the linear contact portion or linear row of
taps, and being rotatable to move the point of contact along the
length of the linear contact portion or linear row of taps and along
the length of the helical or twisted contacting member or along
the length of the helical row of taps.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
118 | . Movable contact electrically adjustable over length of resistance element |
This subclass is indented under subclass 68. Subject matter wherein the resistance element has an elongated
shape, or a plurality of resistance elements are connected in a
series, which shape or series may be straight or curved, together
with at least two conducting terminals, electrically connected to
the element by direct connection or through one of a plurality of intervening
connecting structures each electrically connected to the element
or series of elements along the length, one of the terminals forming
a contact for the element and being movable along the length of
the element or selectively among the plurality of intervening connecting
structures to constitute a contact or contacts for the element or
intervening portion to enable an adjustable portion of the length
of the element or elements to be electrically connected between
the terminals, the resistance value of the portion thus depending
on the position or setting of the movable terminal or terminals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||
119 | .. With contact position indicating lamp |
This subclass is indented under subclass 118. Subject matter including a light which is turned on and
off in accordance with the adjustment of the movable contact, or
whose intensity of illumination is dependent on the adjustment of
the movable contact.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
120 | .. Additional resistor adjustably shunts part of resistance element (e.g., varifunction type |
This subclass is indented under subclass 118. Subject matter wherein an additional resistor is connected
in parallel with a portion (less than the entire length of the resistance
element), at least one of the connections to the resistance element
being adjustable along the length of the element and/or
the resistor being adjustable in resistance value.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
121 | .. With nonlinearity correction |
This subclass is indented under subclass 118. Subject matter including structure which insures the same
change in resistance value across the terminals with a given change
or movement of the resistor actuator throughout the full operating
range of the resistor, i.e., a straight line relationship exists
between the value of the resistance across the terminals and the
movement of the resistor actuator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||
122 | .. Coarse and fine resistance elements |
This subclass is indented under subclass 118. Subject matter including two electrically connected resistance
elements or a single element having relatively small and large resistance values
per unit length along the element or elements, so that greater adjustment
of a contact over one of the elements or portions thereof will be
necessary to effect a given change in resistance value across the
resistor terminals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
123 | ... Plural elements and plural contacts |
This subclass is indented under subclass 122. Subject matter wherein the two resistance elements have
each a contact movable thereon, the contacts being electrically
connected.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
124 | .... Contacts interlinked (e.g., lost motion type) |
This subclass is indented under subclass 123. Subject matter wherein some mechanical interlinking exists
between the movable contacts, as for example to cause the contacts
to move together yet permitting a limited independent vernier adjustment
of the fine contact.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
125 | .. Unitary movable contact electrically bridges plural resistance elements |
This subclass is indented under subclass 118. Subject matter wherein a movable contact structure contacts
a plurality of resistance elements or a plurality of series of taps
or other contact structure electrically connected with the respective
resistance elements, to provide a conducting bridge between the
elements where contact is made.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
126 | ... Elements or taps in parallel |
This subclass is indented under subclass 125. Subject matter wherein the elements or the series of taps
or other structure connected to the elements are arranged in parallel,
i.e., the spacing therebetween is uniform.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
127 | ... Contact rotates between circularly arranged elements or taps |
This subclass is indented under subclass 125. Subject matter wherein the resistance elements or series of taps or other structure connected to the elements have a circular shape or arrangement, and lie in a common circle with the bridging contact extending across the circle and rotating about the center. | |
128 | .. Plural |
This subclass is indented under subclass 118. Subject matter including two or more resistors, each being
of the type defined in subclass 118.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||||
129 | ... Sequentially operated |
This subclass is indented under subclass 128. Subject matter including structure which prevents operation
of one resistor until a second resistor has completed a definite
cycle of operation, i.e., the first resistor is operated after the operating
cycle of the second resistor or is placed in condition to be operated
after the opening cycle of the second resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
130 | ... Ganged |
This subclass is indented under subclass 128. Subject matter wherein the contact structures, or the resistance
elements if movable, of the respective resistors are mechanically
interlinked to move in unison to adjust together the respective
contacts over the length of the resistance elements.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
131 | .... Resistors individually adjustable |
This subclass is indented under subclass 130. Subject matter , wherein the ganged resistors include structure
for changing the value of the resistance presented across the individual
resistor terminals in addition to the change in resistance value
resulting from operation of the ganged structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
132 | .... Resistors in tandem along rotary shaft or coupling |
This subclass is indented under subclass 130. Subject matter wherein the resistors are of the angularly adjustable contact type, and are disposed behind one another with the contact or element rotation occurring about a common axis; together with an actuating shaft extending along this axis, or with the operating shafts of the respective resistors extending along this axis and including coupling structure to enable these shafts to rotate in unison. | |
133 | .... Rectilinearly operated |
This subclass is indented under subclass 130. Subject matter wherein the contact, or the element if movable,
of each resistor moves in a substantially straight line, each resistor
usually being secured to or actuated by a linearly moving rod or
shaft.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
134 | ... Individually operated concentric shaft type |
This subclass is indented under subclass 128. Subject matter wherein the resistors are arranged in tandem
and including shafts which operate the respective resistors, the
shafts having a common axis and being at least partly coextensive
to surround one another.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
135 | .. With zero setting or phasing |
This subclass is indented under subclass 18. Subject matter including structure which permits movement
or adjustment of the contact relative to the resistance element
in addition to the movement or adjustment by the normal adjusting
mechanism, to establish a desired preliminary setting of the contact
relative to the resistance element, the structure maintaining the
selected positioning or adjustment during operation of the normal
contact moving mechanism; or including an adjustable stop or abutment
for setting the relative position of the contact on the resistance
element to provide zero resistance value between the contact and the
end of the element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
136 | .. Contact clamped on resistance element |
This subclass is indented under subclass 118. Subject matter wherein the resistor element has adjustable
movable contact taps or terminals which are adapted to be moved
along the resistance element and clamped as by a screw in direct
contact therewith so that any value of the element resistance may
be obtained.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||
137 | .. Plural contacts adjustable over single resistance element |
This subclass is indented under subclass 118. Subject matter including a plurality of electrically separate
contacts movable over the same resistance element or movable over
a series of taps or other intervening structure connected to the
same resistance element, or connected to different series of taps
or other intervening structures which are connected to the same resistance
element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||
138 | .. Element tapered |
This subclass is indented under subclass 118. Subject matter wherein a physical dimension or characteristic
of the resistance element changes in one direction gradually or
in a plurality of discrete progressive steps along the element as recited
in subclass 217 below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
139 | ... Portion of element shorted |
This subclass is indented under subclass 138. Subject matter wherein conductive material is disposed along
or over, and in direct engagement with the resistance element to
reduce the resistance of the element over a portion of its length
to produce a tapered effect along the length of the element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
140 | ... With intervening connector between contact and element (e.g., taps) |
This subclass is indented under subclass 138. Subject matter wherein a plurality of electrically separate
conducting structures are each connected to the tapered resistance
element along its length together with a terminal movable along
or over the conducting structures to constitute a contact on such
structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
141 | ... Helical or wound |
This subclass is indented under subclass 138. Subject matter wherein the tapered element is formed as
two or more continuous closed coils or loops as a spiral, helix,
or toroidal winding.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
142 | ... Element forms a coating |
This subclass is indented under subclass 138. Subject matter wherein the tapered resistance element is
coated on a base.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
143 | .. Contact moves along turns of helical resistance element |
This subclass is indented under subclass 118. Subject matter wherein the resistance element is formed
as a helix, the contact being mounted to move around and remain
in contact with each convolution of the helix.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
144 | ... Contact lifts element from core |
This subclass is indented under subclass 143. Subject matter wherein the helical resistance element is wound on a core or reel and is adapted to have the portion adjacent the contact raised slightly from the surface of the core, as by having the contact disposed between adjacent portions of the core and the element, the portion of the element which is raised changing with changes in the position of the contact to remain adjacent the contact. | |
145 | ... Helical resistance element moves |
This subclass is indented under subclass 143. Subject matter wherein the helical resistance element is
mounted for linear or rotational movement with respect to the structure
mounting the contact, so that the position of the contact along
the helix may be changed, or the helix may be moved to provide for
an adjustment of the contact along the length of the helix.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
146 | ... With helical collector parallel to helical element |
This subclass is indented under subclass 143. Subject matter wherein a helical collector or return is
positioned concentric with the helical resistor element but spaced
therefrom so that the contactor bridges across or between the resistor
element and collector ring to establish an electrical circuit therethrough.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
147 | ... Resistor formed as a flat spiral |
This subclass is indented under subclass 143. Subject matter wherein a relatively long resistance element
is arranged in a flat spiral configuration, the contactor track
or path being in a plane parallel with the spiral element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
148 | ... With helical screw for moving the contact |
This subclass is indented under subclass 143. Subject matter wherein a threaded shaft or screw having
a contactor linked therewith is so located in relation to the helical
resistor element that rotation of the threaded shaft causes linear
travel of the contact as the contact is rotated along the turns
of the helical wound resistance element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
149 | ... With contact stop |
This subclass is indented under subclass 143. Subject matter wherein significant stopping means is provided
to positively limit or apply a positive stop to the movement of
the contactor over the helical resistance element before reaching
an end of the element so that the contact will remain in engagement
with the element.
| |||
150 | .. Resistance element moves |
This subclass is indented under subclass 118. Subject matter wherein the resistance element is movably
mounted in a frame, housing, or other structure supporting the element
and contact to permit the adjustment of the contact over the length
of the resistance element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||
151 | ... With liquid contact |
This subclass is indented under subclass 150. Subject matter wherein the contact is a liquid disposed
in structure such as a tank or trough for restraining its flow;
the resistance element having a portion in the liquid or engaging
the surface of the liquid, the portion being changed with movement
of the element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
152 | ... With knob mounting or enclosing the element |
This subclass is indented under subclass 150. Subject matter including a knob, the resistance element
being disposed within the knob or directly on the surface of the
knob, and being rotatable with the knob to move along the contact.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
153 | .. Contact operated by pedal or treadle |
This subclass is indented under subclass 118. Subject matter including structure mechanically linked with
the movable contact of the resistor or the element where movable,
and peculiarly adapted for operation by the foot or knee, as by
being operable by a push, and including structure such as a spring
for returning to the initial position upon removal of the pushing
force, and including a portion shaped to facilitate engagement with
the foot as by being shaped like the sole of the foot or having a
substantially flat foot engaging surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
154 | .. With a flexible conductive strip separating the movable contact and the resistance element or taps |
This subclass is indented under subclass 118. Subject matter wherein a flexible conductive strip is disposed
over the contact or tap path of the resistance element and normally
spaced from the element or taps, the movable contact bending the
portion of the strip overlying the contact into electrical engagement
with the resistance element or taps; the portion of the strip engaging
the resistance element or taps depending on the position of the
contact.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
155 | .. Contact rocks along element or taps |
This subclass is indented under subclass 118. Subject matter wherein the contact rocks over or along the
resistance element, or the intervening structure between the element
and contact such as the element taps.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
156 | .. With liquid contact |
This subclass is indented under subclass 118. Subject matter wherein the contact or the portion of the
contact which directly engages the resistor element and through
which the electrical connection is made is a conducting liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||
157 | .. Contact rolls along element or taps |
This subclass is indented under subclass 118. Subject matter wherein the movable contact has a rolling
surface which rolls along, or over, and in direct contact with the
resistance element or with the intervening structure between the
element and contact, such as the element taps.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
158 | ... Contact rolls rectilinearly |
This subclass is indented under subclass 157. Subject matter wherein the rolling contact terminal rolls
in a straight path over or along the resistance element or taps.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
159 | .. With heat conducting or distributing path |
This subclass is indented under subclass 118. Subject matter wherein a mass of heat conducting material
usually metallic is disposed in the vicinity of the resistance element
to provide a medium for transmission of the heat from the element
along a desired and limited path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
160 | .. Contact slides along in contact with element |
This subclass is indented under subclass 118. Subject matter wherein the movable contact terminal slides
or rubs along and remains in direct contact with the resistor element
while sliding or rubbing along to enable a portion of the length
of the element to be placed in the electrical circuit.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||
161 | ... With element casing open over contact track |
This subclass is indented under subclass 160. Subject matter wherein the resistance element is substantially
entirely encased or enclosed by a casing or covering with no intervening
space therebetween (i.e., the inner surface of the casing or covering
is in contact with the outer surface of the resistance element),
except for an open space in the casing directly over the portion
of the resistance element where the contact slides.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
162 | ... Contact angularly slidable |
This subclass is indented under subclass 160. Subject matter wherein the movable contact structure pivots
about an axis for the resistance element contacting portion to slide
in a circular path along the resistance element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
163 | .... With knob forming casing or covering |
This subclass is indented under subclass 162. Subject matter including a housing for the resistance element
and contact structure, the housing or a portion thereof being linked
with the movable contact structure and providing a knob actuating
means for this structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
164 | .... Hermetically sealed housing |
This subclass is indented under subclass 162. Subject matter including a casing with the necessary seals
to prevent passage of air, dust, or moisture to the resistor structure
contained therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
165 | .... With elongated rectilinear resistance element |
This subclass is indented under subclass 162. Subject matter wherein the resistance element is straight
and elongated, as a straight rod or cylindrical helix.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
166 | .... With removable actuating shaft or key |
This subclass is indented under subclass 162. Subject matter wherein the contact actuating means or a
portion thereof is readily separable from the resistor, such as
a key or readily removable knob or shaft, as to prevent unauthorized
adjustment of the resistor; or wherein structure is provided to
permit ready adjustment by some actuator not ordinarily considered
a part of the resistor such as a slot for the blade of a screw driver.
SEE OR SEARCH CLASS:
| |||
167 | .... Spring-loaded contact |
This subclass is indented under subclass 162. Subject matter wherein a spring or similar structure is
connected between the rotatable and the fixed structure of the resistor
to bias the contact to a fixed predetermined point in its arc of
movement, while permitting adjustment from this point against its
biasing effect.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
168 | .... With flexible lead-in to contact |
This subclass is indented under subclass 162. Subject matter wherein a flexible or resilient conductor
is provided between the movable contact and a terminal fixed on
stationary resistor structure, the ends of the conductor being secured
to the movable and stationary structure, respectively.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
169 | .... Contact pressure adjustable |
This subclass is indented under subclass 162. Subject matter wherein structure is provided which permits
a selective variation in the pressure exerted by the contact on
the resistance element.
SEE OR SEARCH CLASS:
| |||
170 | .... With contact biasing spring on contact arm or carrier |
This subclass is indented under subclass 162. Subject matter including a spring mounted on and in addition
to the contact carrier, guide, or arm, and biasing the contact against
the resistance element.
| |||
171 | .... With plural contact portions |
This subclass is indented under subclass 162. Subject matter wherein the contact is composed of two or
more separated portions, each portion engaging the resistance element,
all portions being slidable as a unit along the resistance element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
172 | .... With switching |
This subclass is indented under subclass 162. Subject matter wherein the mechanically variable resistor
with a contact angularly slidable on a resistance element is combined
with a separate switch or includes switching structure as an inherent
part of the resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
173 | ..... Contact separable from resistance element |
This subclass is indented under subclass 172. Subject matter wherein the contact slidable on the resistance
element is separable from the element by being rotated beyond the
end of the element or by being lifted from the element (usually
by rotational or axial movement of the shaft) to break the electric
circuit through the resistance.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
174 | .... With collector ring |
This subclass is indented under subclass 162. Subject matter wherein a conducting ring or arcuate portion
of a ring is provided which is electrically connected to or constitutes
one terminal of the resistor, the contact or its arm or conducting
structure movable with the contact slidably engaging the ring to
convey the electrical energy from the terminal to the contact.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
175 | ..... Ring, a shaft-bearing |
This subclass is indented under subclass 174. Subject matter wherein the ring constitutes a bearing which
directly engages the shaft, the shaft being of conductive material.
| |||
176 | ... Contact rectilinearly slidable |
This subclass is indented under subclass 160. Subject matter wherein the movable contact terminal moves
in a straight path over or along a resistance element, the contact
terminal remaining in contact with the element as it slides along.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||
177 | .... Contact surrounds resistor |
This subclass is indented under subclass 176. Subject matter wherein the rectilinearly slidable contact
completely surrounds or embraces the resistance element, and contacting
the element around the entire periphery of the element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
178 | .... Contact separable from element for switching |
This subclass is indented under subclass 176. Subject matter wherein the rectilinearly slidable contact
is adapted to separate from the resistance element for switching.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||
179 | .... With series switch |
This subclass is indented under subclass 176. Subject matter wherein the resistor is combined with a switch
in series with the resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||
180 | .... Screw-operated |
This subclass is indented under subclass 176. Subject matter including a helical screw and nut as the
actuator or a part of the actuator for the rectilinearly slidable
contact.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
181 | ..... Screw, a fine-adjustment |
This subclass is indented under subclass 180. Subject matter including structure which permits sliding
the contact along the resistance element by direct application of
linear force on the contact for a coarse adjustment of the contact,
the screw providing a fine or vernier adjustment.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
182 | .... With contact lock |
This subclass is indented under subclass 176. Subject matter including means for securing the contact
at some definite point on the resistance element to prevent motion
of the contact in both directions along the element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
183 | .... With collector bar |
This subclass is indented under subclass 176. Subject matter including a conducting bar extending parallel
to the resistance element and constituting one terminal of the resistor,
the rectilinearly slidable contact electrically bridging and sliding
along both the resistance element and the conducting bar.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
184 | .. With housing |
This subclass is indented under subclass 118. Subject matter including a casing or housing which substantially
encloses the resistance element and movable contact elements, leaving only
the necessary operating means by which the contact element is moved
exposed or extending outside of the housing to permit external adjustment
of the resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||||
185 | .. With intervening connector between contact and element (e.g., taps) |
This subclass is indented under subclass 118. Subject matter wherein a plurality of otherwise electrically
separate conducting structures are each electrically connected to
the elongated element along its length, and a terminal being movable
among the conducting structures to constitute a contact on such
structures.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||
186 | ... Connector formed as severed helical turns or as comb teeth |
This subclass is indented under subclass 185. Subject matter wherein the connector is formed as a plurality
of helical turns which are severed along the length of the helix
to provide a plurality of physically and electrically separate taps
or contacts, each severed turn engaging the resistance element,
as by surrounding or being embedded therein, or wherein the connector
is formed as a plurality of comb teeth, the base of the comb being
removed to leave the severed teeth physically and electrically separate
to provide taps or contacts, the teeth engaging the resistance element,
as by being embedded therein.
SEE OR SEARCH CLASS:
| |||
187 | ... With arc suppressor |
This subclass is indented under subclass 185. Subject matter including structure or arrangement to reduce
or eliminate arcing between the movable contactor and the conducting
structures, such as taps engaged by this contactor as the contact
moves off a conducting structure or from one conducting structure
to the next.
SEE OR SEARCH CLASS:
| |||||
188 | ... With collector bar or ring |
This subclass is indented under subclass 185. Subject matter together with a conducting bar or ring, along
which the movable contact slides or along which a contact movable
with and electrically connected to the first movable contact slides.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
189 | ... With magnetic holder for controller arm |
This subclass is indented under subclass 185. Subject matter including a retaining or positioning magnet
for locking or holding the movable contact in a predetermined position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||
190 | ... Angularly movable contact |
This subclass is indented under subclass 185. Subject matter wherein the contact moves angularly over
the conducting structures connected to the resistance element i.e.,
the contact moves about a pivot point.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
191 | .... With switch |
This subclass is indented under subclass 190. Subject matter wherein an electric switch is included in
the electrical circuit to allow the electrical resistor to be cut
into or out of electrical circuit.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||
192 | .... Resistance element enclosed |
This subclass is indented under subclass 190. Subject matter wherein the resistance element is enclosed
or housed as defined in subclass 226 below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||||||
193 | ..... Enclosure formed on and hardened on element |
This subclass is indented under subclass 192. Subject matter wherein the enclosure surrounding the resistor
element is formed on and hardened on the element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
194 | ... Rectilinearly movable contact |
This subclass is indented under subclass 185. Subject matter wherein the contact moves in a straight line
over the conducting structures connected to the resistance element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
195 | . Resistance value varied by removing or adding material |
This subclass is indented under subclass 68. Subject matter wherein a finished or completely manufactured
resistor includes structure for removing or adding resistance material
to or from the resistance element to change the resistance value
of the resistor; or wherein the resistance element is peculiarly
adapted for such removal on addition of material; or wherein the
resistance element includes resistance or conducting material which
may be removed or slit to alter the resistance value of the element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||
196 | . With resistor actuator position indicator |
This subclass is indented under subclass 68. Subject matter including structure such as a pointer, gauge,
or scale for showing the displacement of the resistor actuator or
the mechanical adjustment of the resistor with respect to some fixed
object, and thus furnish an indication of the resistance value for
which the resistor is set.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
197 | . With support |
This subclass is indented under subclass 68. Subject matter including a variable resistor as defined
in subclass 68 together with structure that establishes and/or
maintains the resistor position or path of movement with reference
to some other object.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
198 | . With switch actuated by resistor actuator |
This subclass is indented under subclass 68. Subject matter wherein a variable resistor as there defined
is combined with a switch, there being a linkage between the resistor
and switch so that variation of the variable resistor over some
portion of its resistance range causes operation of the switch to
make and/or break an electrical circuit, or so that operation
of the switch to make and/or break an electric circuit causes
variation of the variable resistor over some portion of its resistance
range.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||||
199 | . With housing |
This subclass is indented under subclass 68. Subject matter including a housing or casing which substantially
entirely encloses the mechanically adjustable or variable resistor, with
only the necessary resistor operating mechanism extending outside
the casing to permit external adjustment of the resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||||
200 | . With switch |
This subclass is indented under subclass 68. Subject matter including one or more resistance elements
together with one or more switches, which connect the elements in
at least two circuit configurations to present two different resistance
values across a set of terminals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||
201 | .. Switch connects plural elements in parallel |
This subclass is indented under subclass 200. Subject matter wherein the switch or switches connects a plurality of resistance elements in or out of a parallel circuit arrangement. | |
202 | MOVABLE CONTACT STRUCTURE |
This subclass is indented under the class definition. Subject matter including an electrode or terminal, which
may include the adjacent supporting structure such as the contact
arm, the electrode or terminal being adapted to connect movably
and electrically along or into a resistance element as by sliding
along or into the element, the electrode or terminal as such not being
otherwise classifiable.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||
203 | READILY SEVERABLE INTO INDEPENDENT RESISTORS |
This subclass is indented under the class definition. Subject matter wherein a plurality of resistor units are
formed or constructed as a unitary structure with a groove, notch,
mark, fragile or frangible part, as well as with an overall shape
to facilitate separation into a plurality of individual resistor
units as by breaking.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
204 | ELEMENT IN LAYERS PILED OR STACKED BETWEEN TERMINALS |
This subclass is indented under the class definition. Subject matter wherein the resistance element is formed
of a plurality of layers of resistance material such as discs or
buttons, piled or stacked between the terminals, the layers being electrically
connected in series together and in series with the terminals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||
205 | . With intervening conducting layer |
This subclass is indented under subclass 204. Subject matter wherein the layers of resistance material
are separated by layers of relatively high conducting material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
206 | EXPANDED METAL TYPE |
This subclass is indented under the class definition. Subject matter wherein the resistance element is formed
of expanded metal as defined in (1) Note below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||
207 | ELEMENT AND BASE PERMANENTLY FOLDED OR ROLLED |
This subclass is indented under the class definition. Subject matter wherein the resistance element and base are
folded or rolled together in final form as to form, for example,
a zigzag or helical resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||
208 | MESH, WOVEN, OR BRAIDED RESISTANCE ELEMENT |
This subclass is indented under the class definition. Subject matter wherein the resistance element includes elongated
filaments, strands, or fibres of resistive material which are woven, braided,
or knitted together or with other filaments, strands, or fibres
of nonresistive material (conductive or insulating) to form the element
as a mesh, weave, or braid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||||||||||
209 | EXTENSIBLE |
This subclass is indented under the class definition. Subject matter wherein the resistor unit is constructed
to allow appreciable expansion and/or contraction between
the terminals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||
210 | FLEXIBLE OR FOLDING |
This subclass is indented under the class definition. Subject matter wherein the resistors unit is inherently
flexible or foldable, and can be looped upon itself or collapsed
into various forms without permanent deformation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||
211 | . Element coated on flexible base |
This subclass is indented under subclass 210. Subject matter wherein the resistance element is impregnated
or coated on a flexible base or support.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||
212 | . Tape or sheet |
This subclass is indented under subclass 210. Subject matter wherein the resistor unit has a substantially
flat overall shape as in a tape or sheet.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||
213 | . Beaded |
This subclass is indented under subclass 210. Subject matter wherein an elongated flexible or folding
resistance element is surrounded or incased by insulative buttons
or beads, the resistance element extending through the buttons or
beads.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
214 | . Cable type |
This subclass is indented under subclass 210. Subject matter wherein the resistor has an elongated shape
and is of substantially uniform external size over its length, the
resistance element extending between the ends of the resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||
215 | WITH SWITCH |
This subclass is indented under the class definition. Subject matter wherein a switch is connected in series or
parallel with the resistor for effectively connecting or disconnecting
the resistor from the circuit; and not otherwise classifiable.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||
216 | IN COAXIAL TRANSMISSION LINE OR WAVE GUIDE |
This subclass is indented under the class definition. Subject matter including a wave guide or coaxial transmission
line, the resistor or element thereof lying within the outer sheath
of the wave guide or coaxial line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||
217 | TAPERED ELEMENT |
This subclass is indented under the class definition. Subject matter wherein a physical dimension or characteristic
of the element changes in one direction gradually or in a plurality
of discrete progressive steps along the element from one terminal
towards the other.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||
This subclass is indented under subclass 217. Subject matter wherein the resistance element is of the
helical or wound type as defined in subclass 296 below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
219 | IN OR ON LAMP SOCKET OR BASE |
This subclass is indented under the class definition. Subject matter including a lamp socket or lamp base together
with a resistor positioned within the socket or base or mounted
directly on and in engagement with the surface of the socket or
base and in circuit with the terminal or terminals of the socket
or base, and not otherwise classifiable.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||
220 | IN DETACHABLE ELECTRICAL CONNECTOR |
This subclass is indented under the class definition. Subject matter including a detachable electrical connector,
and a resistor or element thereof being disposed within the connector and
in circuit with the terminal or terminals of the connector.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||
221 | DETACHABLE PLUG-TYPE RESISTOR UNIT |
This subclass is indented under the class definition. Subject matter wherein the resistor has terminal structure
which is readily detachable from the associated terminals, and which
terminal structure constitutes the resistor mounting means, the
resistor being readily separable as a unit from the associated terminals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
222 | WITH LIQUID ELEMENT |
This subclass is indented under the class definition. Resistors wherein the resistance element is a liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
223 | GRANULAR OR POWDERED ELEMENT |
This subclass is indented under the class definition. Subject matter wherein the resistance element is granular
or powdered in final form.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||
224 | . Granular or powdered mixtures |
This subclass is indented under subclass 223. Subject matter wherein the granular or powdered element
consists of a mixture of two or more different materials, each material
being granular or powdered in the final state.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
225 | . Carbon particles |
This subclass is indented under subclass 223. Subject matter wherein the granular or powdered material
constituting the resistor element is substantially pure carbon.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
226 | INCASED, EMBEDDED, OR HOUSED |
This subclass is indented under the class definition. Subject matter wherein the resistance element is substantially
completely covered or surrounded with a solid, liquid, or gaseous
substance or a vacuum layer to provide a barrier or separation between
the element and the outside, or together with any structure maintaining such
substances or layer around the resistor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||||||||||||||||||||||||||
227 | . With resistance value indicator |
This subclass is indented under subclass 226. Subject matter including marks, tags, colors, or other structure
or configuration, usually on the exterior of the casing or housing
to provide a visual indication of the resistance value of the resistance
element within the housing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||
228 | . Casing extends through plate |
This subclass is indented under subclass 226. Subject matter wherein a casing or housing, which is usually
elongated and cylindrical, extends through a plate, wall, or similar
structure whose thickness is less than the length of the casing
or housing, the casing or housing being secured to the plate or
wall.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
229 | . Probe type |
This subclass is indented under subclass 226. Subject matter wherein the casing or housing is formed as
a single thin elongated member, such as a tube, one end being closed
over the resistance element, with flexible leads externally connected
or joined to terminals or with leads extending into the other end
of the member for connection to the resistance element, together with
structure or configuration, such as a handle or a particular shape
of the member, which permits or facilitates free movement of the elongated
member with the resistance element therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
230 | . Metal casing or housing cast around element |
This subclass is indented under subclass 226. Subject matter wherein the casing or housing or one layer
of the casing or housing is formed of metal which is cast in situ
around the resistance element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
231 | . In liquid |
This subclass is indented under subclass 226. Subject matter wherein the resistance element is incased
or enclosed in a liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
232 | . Casing or housing readily openable and/or separable from element |
This subclass is indented under subclass 226. Subject matter wherein the casing or housing is in two or
more parts which are readily openable or separable as to provide
access to or to permit removal of the resistance element, and/or
wherein the casing or housing together with the element includes
structure or has a configuration to permit removal or separation
of the element from the casing or housing.
SEE OR SEARCH CLASS:
| |||||
233 | .. Elongated casing or housing with plug, disc, or cap at end |
This subclass is indented under subclass 232. Subject matter wherein the casing or housing is formed as
an elongated tube with an open end, and includes a plug, disc, or
cap, which is readily separable from the remainder of the casing
or housing, closing the otherwise open end.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
234 | . With gaseous or vacuum spacing between element and casing or housing |
This subclass is indented under subclass 226. Subject matter wherein a vacuum or gaseous spacing exists
between the outer surface of the resistance element and the inner
surface of the external casing or housing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||
235 | .. Plural elements or resistors |
This subclass is indented under subclass 234. Subject matter, wherein a plurality of resistors or elements
for resistors are enclosed in a casing or housing with a vacuum
or gaseous spacing between the outer surface of each of the resistors
or elements and the inner surface of the external casing or housing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
236 | .. Spacing of uniform thickness over length of element |
This subclass is indented under subclass 234. Subject matter wherein the gaseous or vacuum spacing is
of uniform thickness over the length of the resistance element.
| |||
237 | ... Hermetically sealed |
This subclass is indented under subclass 236. Subject matter wherein the gaseous or vacuum spacing is
completely sealed from the exterior of the resistor, as to prevent
the passage of any gas or moisture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
238 | . Element inpowdered insulation with outer metallic sheath |
This subclass is indented under subclass 226. Subject matter wherein the casing or housing constitutes
a metallic sheath with powdered insulation therein, the resistance
element being embedded in the powdered insulation and insulated
from the metallic sheath.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||||
239 | .. Plural elements or resistors |
This subclass is indented under subclass 238. Subject matter wherein two or more physically separate and
distinct resistance elements are embedded in powdered insulation
in a common metallic sheath, or including two or more resistors
each being as defined in subclass 238 above, i.e., each resistor
includes a distinct metallic sheath containing a resistance element embedded
in powdered insulation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
240 | .. Terminals or leads adjacent |
This subclass is indented under subclass 238. Subject matter wherein structure is provided to position
the resistance terminals or leads so that the spacing therebetween
is small relative to the overall resistor dimensions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
241 | ... Sheath only outside looped element |
This subclass is indented under subclass 240. Subject matter wherein the metallic sheath surrounds or closes around the loop formed by the resistance element and/or leads without extending into the space between the ends of the loop or into the bight of the loop, i.e., the sheath surrounds the loop as a unit, as opposed to a sheathed elongated resistance element with the sheath and element being together bent into a loop. | |
242 | .. Shape of sheath |
This subclass is indented under subclass 238. Subject matter wherein the metallic sheath has a significant
cross-sectional or overall shape.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
243 | . Element in insulation with outer metallic sheath |
This subclass is indented under subclass 226. Subject matter wherein the resistance element is substantially
entirely enclosed in an insulating layer, which is either a solid
mass of insulating material or a noninsulating material coated or
otherwise covered with insulation to present an insulated surface,
and a metallic layer substantially entirely surrounding or enclosing
the insulating layer to provide a sheath.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
244 | .. Insulation coated on conducting liner |
This subclass is indented under subclass 243. Subject matter wherein the insulation constitutes a conductive
liner, as of metal, within the metallic sheath and between the sheath
and the resistance element, the liner being coated with insulating
material to present an insulated surface to the sheath and resistance
element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
245 | .. Entire insulation or sheath formed as a coating |
This subclass is indented under subclass 243. Subject matter wherein the entire insulation and/or
the entire sheath constitutes a coating or coatings.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
246 | .. With insulation and sheath external and internal to element |
This subclass is indented under subclass 243. Subject matter wherein the resistance element has an opening
therethrough, as by having a tubular or annular shape, the insulation
and sheath extending through the opening to cover the inner surface
of the resistance element, as well as extending over and covering
the outer surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
247 | .. Plural part sheath |
This subclass is indented under subclass 243. Subject matter wherein the metallic sheath is formed in
two or more parts secured together.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
248 | ... Insulation formed and hardened in situ (e.g., molded) |
This subclass is indented under subclass 247. Subject matter wherein the insulation is formed between
the resistance element and metallic sheath and hardened in this
position; or wherein the insulation is formed on and hardened on
the resistance element or in the metallic sheath, the other of the
resistance element and metallic sheath being later placed on the formed
insulation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
249 | ... Parts formed as flat sheets |
This subclass is indented under subclass 247. Subject matter wherein the metallic sheath is formed as
two substantially flat sheets secured together with the resistance
element and insulation disposed between the sheets.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
250 | .. Insulation formed and hardened in situ (e.g., molded) |
This subclass is indented under subclass 243. Subject matter wherein the insulation is formed between
the resistance and the metallic sheath and hardened in this position;
or wherein the insulation is formed on and hardened on the resistance
element or in the metallic sheath, the other of the resistance element
and metallic sheath being placed on the formed insulation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
251 | .. Sheath embraces or folds over insulation |
This subclass is indented under subclass 243. Subject matter wherein the metallic sheath is formed as
a sheet and surrounds the solid insulation, the two opposite sides
of the sheet either substantially meeting or overlapping.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
252 | . Element embedded or enclosed in groove or recess |
This subclass is indented under subclass 226. Subject matter wherein the resistance element is disposed
in a groove, slot, or recess, or in a channel shaped container.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||
253 | .. With filling hardened in situ |
This subclass is indented under subclass 252. Subject matter wherein the groove or recess contains a filling
which is molded or otherwise hardened in place and which fills the
space between the resistance element and the wall of the groove
or recess and/or which closes the open side of the groove
or recess.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
254 | . Flattened resistance element between flat layers |
This subclass is indented under subclass 226. Subject matter wherein the resistance element is flat in
shape, as in a planar zigzag resistance element or a helical resistance
element wound on a flat ribbon, and wherein the casing or housing
is formed as two flat preformed layers, the resistance element being
disposed between and substantially enclosed by the layers.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
255 | .. Layers coalesced or fused together |
This subclass is indented under subclass 254. Subject matter wherein the layers are fastened to one another
as by fusing, vulcanizing or other intimate bonding of all or part
of the layer surfaces.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
256 | . Casing or housing formed in plural layers external to element |
This subclass is indented under subclass 226. Subject matter wherein the casing or housing is formed as
a plurality of layers, each layer in itself substantially completely
surrounding the resistance element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
257 | .. One layer a coating |
This subclass is indented under subclass 256. Subject matter wherein one or more of the layers constitute
a coating.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
258 | . Resistance element formed as a coating on interior of casing or housing |
This subclass is indented under subclass 226. Subject matter, wherein the resistance element is formed
as a coating on the interior surface of the casing or housing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
259 | . Wound, braided, or woven casing or housing |
This subclass is indented under subclass 226. Subject matter, wherein the casing or housing is formed
of a braided, wound or woven material; or wherein the casing is
braided, wound, or woven on the inner resistance structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
260 | . Plural resistors |
This subclass is indented under subclass 226. Subject matter, including a plurality of resistors (each
having separate and distinct resistance element and terminals) as
defined in subclass 226 above which are supported or otherwise related
to form a unitary structure; or a plurality of resistors (each having
separate and distinct resistance elements and terminals) which are
embedded, incased or housed in a common casing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
261 | .. Helical or wound element |
This subclass is indented under subclass 260. Subject matter wherein at least one of the resistors is
of the helical or wound type as defined in subclass 296 below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
262 | . Casing or housing formed as a coating |
This subclass is indented under subclass 226. Subject matter wherein the casing or housing is formed as
a coating.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||
263 | .. Helical or wound element |
This subclass is indented under subclass 262. Subject matter including an elongated resistance element
formed as two or more continuous closed coils or loops as a spiral,
helix, or toroidal winding as defined in subclass 296.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
264 | ... Element coiled on a core |
This subclass is indented under subclass 263. Subject matter wherein the resistance element is wound or
coiled on a core, the surface of the core engaging the helix or
winding over substantially the entire periphery of the core and over
the entire axial length of the helix or winding as for example to
reinforce or shape the helix or winding over its length.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
265 | .... Terminal or leads at one end of core |
This subclass is indented under subclass 264. Subject matter, wherein the resistance terminals are located
at one end of the core, or wherein the resistor includes structure
or is shaped to enable the leads to extend from the resistor at
one end only of the core.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
266 | .... Terminal surrounds element and/or core |
This subclass is indented under subclass 264. Subject matter wherein at least one of the resistance terminals
surrounds the resistance element and/or the core, as a
cap or an enclosing ring.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
267 | . Helical or wound element |
This subclass is indented under subclass 226. Subject matter, wherein the resistance element is elongated
and formed as two or more continuous closed coils or loops as a
spiral, helix, or toroidal winding as defined in subclass 296 below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
268 | .. Preformed sleeve engaging over element |
This subclass is indented under subclass 267. Subject matter wherein the casing or housing constitutes
a preformed sleeve which is disposed over the cylindrical helix
or winding, the inner surface of the sleeve engaging the outer cylindrical
surface of the helix or winding over the entire periphery, i.e.,
the bore of the sleeve is fitted to the helix or winding.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
269 | .. Casing or housing formed on and hardened on resistor (e.g., molded) |
This subclass is indented under subclass 267. Subject matter wherein the casing or housing surrounding
the helical or wound element has been applied in a plastic formable
state with substantially no intervening spaces between the casing
or housing and the internal resistance structure, the casing or
housing being hardened on the internal resistance structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
270 | .. Element coiled on a core |
This subclass is indented under subclass 267. Subject matter wherein the resistance element is wound or
coiled on a core, the surface of the core engaging the helix or
winding over substantially the entire periphery of the core and over
the entire axial length of the helix or winding as, for example,
to reinforce or shape the helix or winding over its length.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
271 | . Terminal forms casing or housing |
This subclass is indented under subclass 226. Subject matter wherein one or both of the resistance terminals
constitute a casing or housing for the resistance element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
272 | . Terminal or lead surrounds and secured to casing or housing |
This subclass is indented under subclass 226. Subject matter wherein one or more of the resistance terminals
or conductors connecting the resistance element or terminal to an
external circuit surround the housing or casing and are also secured
to the casing or housing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
273 | . Terminal or lead extends into end of elongated casing or housing |
This subclass is indented under subclass 226. Subject matter wherein the casing or housing has an elongated
shape, and the resistance terminal or the conductor connecting the
resistance element or terminal with an external circuit extends
into an end of the casing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
274 | .. With sealing plug, disc or cap |
This subclass is indented under subclass 273. Subject matter wherein distinct structure such as a disc,
seal, or cap is provided between the casing and the terminal or
lead conductor to seal any space existing therebetween.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
275 | . Casing or housing formed on and hardened on resistor (e.g., molded) |
This subclass is indented under subclass 226. Subject matter wherein the casing or housing has been applied
to all or part of the remaining resistance structure in a plastic
and formable state with substantially no intervening space between
the casing or housing and the resistance structure, and then hardened
in position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||
276 | . Terminal or lead extends through casing or housing wall |
This subclass is indented under subclass 226. Subject matter wherein at least one resistance terminal
or conductor connecting the resistance element or terminal to an
external circuit extends through a wall of the casing to permit an
electrical connection to be made externally to the resistance element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
277 | WITH PROTECTING STRUCTURE SPACED FROM ELEMENT OR TERMINAL |
This subclass is indented under the class definition. Subject matter wherein the resistor includes mechanical
protecting structure such as a guard, screen, or mechanical shield
which is secured to the remaining resistor structure and is spaced
from the resistance elements and/or terminals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
278 | EDGEWISE COILED HELICAL STRIP RESISTANCE ELEMENT |
This subclass is indented under the class definition. Subject matter wherein a flat ribbon or strip-like resistance
element is coiled or otherwise formed as a flat or cylindrical helix
with the narrow edges of the resistance element forming the outer
and inner boundary surfaces of the helix, the wider flat surfaces
of the resistance elements extending transverse to the helix.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||
279 | RIBBON RESISTANCE ELEMENT BENT OR CURVED ON FLAT SIDE |
This subclass is indented under the class definition. Subject matter wherein the resistance element constitutes
an elongated continuous flat ribbon, strip, or tape of uniform cross-sectional dimensions
and integral over its length between terminals, the element being
bent or curved along its flat sides between terminals into a particular
configuration while retaining the ribbon-like characteristic.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||
280 | . Zigzag or sinuous |
This subclass is indented under subclass 279. Subject matter wherein the flat ribbon or strip resistance
element is bent or curved into a zigzag or sinusoid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
281 | .. Element includes integral stiffening structure |
This subclass is indented under subclass 280. Subject matter wherein the ribbon or strip resistance element
includes integral structure, which may be a particular shape such
as a rib or channel, to reduce any tendency of the ribbon or strip
to bend.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
282 | . Helical or wound |
This subclass is indented under subclass 279. Subject matter wherein the flat ribbon or strip resistance
element is bent or curved into a helical or spiral configuration.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||||
283 | ZIGZAG OR SINUOUS RESISTANCE ELEMENT |
This subclass is indented under the class definition. Subject matter where the resistance element is composed
of at least three elongated portions extending side by side and/or
coextensive and electrically separate, the alternate adjacent ends
being electrically connected by being in contact or integral, or
by resistive or conductive material to provide a series path through
the elongated portions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||
284 | . Element includes integral stiffening structure |
This subclass is indented under subclass 283. Subject matter wherein the elongated portions of the zigzag
or sinusoidal element include integral structure, which includes
a particular shape, such as a rib or channel, to reduce any tendency
of the elongated portion to bend.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
285 | . Element extends along groove in base |
This subclass is indented under subclass 283. Subject matter wherein the zigzag or sinuous element lies
substantially over its entire length in a groove in a base forming
a supporting structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||
286 | . Helical |
This subclass is indented under subclass 283. Subject matter wherein the resistor includes in the same
part a helical pattern as well as the zigzag or sinuous pattern.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
287 | . Compound or multiple zigzag |
This subclass is indented under subclass 283. Subject matter wherein the resistance element is shaped
to provide two distinct zigzag patterns in the same portion of the
resistance element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
288 | .. Element includes conductive jumpers or spacers |
This subclass is indented under subclass 287. Subject matter wherein the resistance element includes three
or more resistive strips substantially parallel or lying in substantially
parallel planes, alternate adjacent ends of the strips being electrically
connected in series by conductive material usually formed as a connecting
wire, strip, or block, thus forming the strips into a zigzag or
sinuous pattern.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
289 | . Element includes conductive jumpers or spacers |
This subclass is indented under subclass 283. Subject matter wherein the resistive element includes three
or more elongated resistive portions which are substantially parallel,
alternate adjacent ends of the portions being electrically connected
in series by conductive material usually formed as a connecting
wire strip or block, thus forming a zigzag or sinuous pattern.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
290 | . Element projects in or through an opening or a slot in a support or frame |
This subclass is indented under subclass 283. Subject matter wherein the resistance element is disposed
for a part (substantially less than all) of its length in a slot,
notch, or other opening in the frame or support, the frame or support
directly engaging the element over a portion of its length, usually
for the purpose of positioning the element on the frame or support.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||
291 | . With transverse element stiffening or reinforcing rod or strip |
This subclass is indented under subclass 283. Subject matter wherein a rod or strip extends transversely
to the elongated portions of the zigzag or sinusoidal element and
engages these portions to prevent the portions bending with respect
to one another thus providing a reinforcement or stiffening to the
zigzag or sinusoidal element as a whole, the rod or strip being of
insulating material or being insulated from the elongated portions
to avoid short circuiting between the portions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||||||
292 | . Element forms a coating |
This subclass is indented under subclass 283. Subject matter wherein the resistance element is formed
as a coating on a base.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
293 | . Planar |
This subclass is indented under subclass 283. Subject matter wherein the resistance element is flat in
one dimension to lie substantially in one plane.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||||
294 | . Cylindrical |
This subclass is indented under subclass 283. Subject matter wherein the zigzag or sinuous resistance
element lies in or is formed as a cylindrical surface of revolution.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||
295 | PLURAL RESISTANCE ELEMENTS CONNECTED BY A JUMPER OR SPACER |
This subclass is indented under the class definition. Subject matter wherein a plurality of resistors as there
defined have their elements connected at one of the respective ends,
by a separate and distinct conductor, the resistance elements being
close together and physically supported to form a unitary resistance
structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||
296 | HELICAL OR WOUND RESISTANCE ELEMENT |
This subclass is indented under the class definition. Subject matter wherein an elongated resistance element is
formed as two or more continuous closed coils or loops as a spiral, helix,
or toroidal winding.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||||||||||||||||
297 | . Flat spiral winding |
This subclass is indented under subclass 296. Subject matter wherein the resistance element is formed
as a flat spiral lying in one plane.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
298 | . Compound helix or winding |
This subclass is indented under subclass 296. Subject matter wherein the resistance element is formed
in two or more distinct helical or winding patterns, as a coiled
wire resistance element being, in turn, helically wound on a cylindrical
form.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
299 | . Plural supported helices or windings |
This subclass is indented under subclass 296. Subject matter including a plurality of helical or wound
distinct resistance elements together with the necessary supporting
structure to establish a fixed physical relationship between the
elements as opposed to a mere electrical connection.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||
300 | . Element forms a coating |
This subclass is indented under subclass 296. Subject matter wherein the helical resistance element constitutes
a helical coating on an insulating base or support.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
301 | . Element coiled on flat or ribbon base |
This subclass is indented under subclass 296. Subject matter wherein the resistance element is wound or
coiled around a base which is flat or ribbon shaped, the coils of
the winding engaging the flat surfaces as well as the edge surfaces
of the base over the entire length of the coil to result in a flattened
winding having a shape similar to the cross-sectional shape of the
base.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||
302 | . Element coiled on cylindrical or prismatic core |
This subclass is indented under subclass 296. Subject matter wherein the resistance element is wound or
coiled on a cylindrical or prismatic core, the surface of the core
engaging the helix over substantially the entire periphery of the core
and over the entire axial length of the helix or winding as, for
example, to reinforce or shape the helix over its length.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||||||
303 | .. In helical groove on core |
This subclass is indented under subclass 302. Subject matter wherein the core is provided with a helical
groove in its surface, the resistance element being disposed in
the groove with the convolutions of the element lying along the
helical path of the groove.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
304 | . Element on frame or support |
This subclass is indented under subclass 296. Subject matter wherein the helical resistance element is
wound or otherwise disposed on a frame or support, the frame or
support directly engaging the winding over a portion or portions
of its length.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||
305 | .. Element extends in or through openings or grooves in frame or support |
This subclass is indented under subclass 304. Subject matter wherein the resistance element is wound or
otherwise disposed in a notch, groove or other opening in the frame
or support, usually for the purpose of positioning the element on
the frame or support.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||
306 | WITH BASE EXTENDING ALONG RESISTANCE ELEMENT |
This subclass is indented under the class definition. Subject matter including a resistance element, and a non-resistive
element in close physical relationship therewith to impart a rigidity
or reinforcing to the resistance element not otherwise present.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||
307 | . Resistance element and/or terminals printed or marked on base |
This subclass is indented under subclass 306. Subject matter wherein the resistance and/or terminal
is coated on the base in a particular pattern or mark as by stenciling,
printing, stamping or drawing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||
308 | . Resistance element coated on base |
This subclass is indented under subclass 306. Subject matter wherein the resistance element is coated
on the base, and covers the base or a distinct part of the base.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||||
309 | .. Terminal coated on |
This subclass is indented under subclass 308. Subject matter wherein at least one of the terminals is
coated on the resistance element and/or on the base.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
310 | . Resistance element extends through base |
This subclass is indented under subclass 306. Subject matter wherein the resistance element extends through
the base.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
311 | . Resistance element mounted in a groove in base |
This subclass is indented under subclass 306. Subject matter wherein the resistance element is positioned
in a groove in the base.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||
312 | . Terminal extends in or through base |
This subclass is indented under subclass 306. Subject matter wherein the resistance terminal extends in
or through the base.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
313 | . Terminal embraces base |
This subclass is indented under subclass 306. Subject matter wherein the terminal extends substantially
around an external surface of the base, as a cap or encircling ring.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
314 | . Resistance element and base formed in layers |
This subclass is indented under subclass 306. Subject matter wherein the resistance element and base are
formed in flat layers or as plates and piled on one another to form
a lamination.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||||||||
315 | WITH MOUNTING OR SUPPORTING MEANS |
This subclass is indented under the class definition. Subject matter wherein the resistor is combined with structure
that establishes and/or maintains its position or path
of movement with reference to some other object, and not classified
above or elsewhere.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||||||||||||
316 | . Compensates for or permits resistor |
This subclass is indented under subclass 315. Subject matter wherein the support includes structure, such
as a spring, which offsets the effect of expansion or contraction
of the resistance element due, for example, to temperature change,
and/or which permits the resistance element to freely expand
or contract.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||
317 | . Threading or projecting through the support |
This subclass is indented under subclass 315. Subject matter wherein the resistance element passes through
the support, the support substantially surrounding the resistance
element and there being an appreciable portion of the resistance
element on either side of the support.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
318 | . Extending between supports |
This subclass is indented under subclass 315. Subject matter including at least two supporting portions
with a resistance element suspended between and supported by these
two supporting portions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||
319 | .. Plural resistors |
This subclass is indented under subclass 318. Subject matter wherein a plurality of resistors are suspended
between the supporting portions either side by side or end to end,
or wherein a plurality of resistors are suspended between a plurality
of pairs of supporting portions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
320 | . Plural resistors |
This subclass is indented under subclass 315. Subject matter wherein a plurality of resistors are combined
with structure that establishes and/or maintains their
position or path of movement with reference to some other object or
to one another.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||
321 | RESISTANCE ELEMENT CORES AND FRAMES |
This subclass is indented under the class definition. Subject matter including a base claimed, per se, usually
of insulating material on which the resistance element may be wound
or otherwise strung, and peculiarly adapted for this purpose and
not classified elsewhere.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||
322 | WITH TERMINAL |
This subclass is indented under the class definition. Subject matter including a resistance element and one or
more terminals in physical and electrical contact with the element
for connecting the resistance element in an electric circuit.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||||||||||||||
323 | . Terminal tapped on resistance element |
This subclass is indented under subclass 322. Subject matter wherein the resistance element is elongated
in shape with a terminal connected to the element intermediate the
ends of the element, and/or wherein a third terminal is
connected to the resistance element physically or electrically between
the connection of two other terminals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
324 | . Diverse terminals |
This subclass is indented under subclass 322. Subject matter wherein the resistor terminals are significantly
different, as by each terminal with the associated resistance element
being classifiable in different subclasses under subclass 322.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
325 | . With three or more terminals |
This subclass is indented under subclass 322. Subject matter wherein the resistance element has at least
three distinct terminals connected thereto.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
326 | . Terminals adjacent (e.g., looped resistor) |
This subclass is indented under subclass 322. Subject matter wherein the terminals are positioned relatively
close to one another, i.e., the spacing between the terminals is
small as compared to the length of the current path through the
resistor element, as by forming the resistor as a loop.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
327 | . Terminal coated on resistance element |
This subclass is indented under subclass 322. Subject matter, wherein one of the terminals constitutes
at least in part a coating on the resistance element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
328 | . Terminal and resistance element disposed in flat layers |
This subclass is indented under subclass 322. Subject matter, wherein the terminals and resistance elements
are formed in flat layers or as plates and piled on one another
to form a lamination.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||
329 | . Welded or soldered |
This subclass is indented under subclass 322. Subject matter wherein at least one of the terminals is
secured to the resistance element by welding or soldering.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
330 | . Terminal and resistance element integral |
This subclass is indented under subclass 322. Subject matter wherein the resistance element and terminal
are formed as an integral unit.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||
331 | . Resistance element surrounds terminal |
This subclass is indented under subclass 322. Subject matter wherein the resistance element surrounds
at least part of one of the terminals, as by the terminal being
embedded in the resistance element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
332 | . Terminal embraces or surrounds resistance element |
This subclass is indented under subclass 322. Subject matter wherein the terminal extends around an appreciable
portion of the resistance element, as by a ring shaped terminal
surrounding an end of the resistance element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
333 | PARTICULAR CONFIGURATION AND/OR DIMENSION |
This subclass is indented under the class definition. Subject matter wherein the resistance element or base has
a significant shape and/or physical dimension.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||||||||||||||||||
334 | MISCELLANEOUS |
This subclass is indented under the class definition. Subject matter which is not provided for in any of the preceding
subclasses in this class.
SEE OR SEARCH CLASS:
| |||
FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
This subclass has no definition. | |
DIG1 | WORM GEAR DRIVE |
This subclass has no definition. | |