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 [Search a list of Patent Appplications for class 200]   CLASS 200,ELECTRICITY: CIRCUIT MAKERS AND BREAKERS
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SECTION I - CLASS DEFINITION

This is the generic class for devices, per se, of general application which are used for closing or opening electrical circuits and the combination of these devices with their operating means. In the combined devices there must be something more than the mere inclusion of a circuit maker or breaker broadly.

Combinations of circuit makers and breakers with electrical plugs, sockets, or other connectors are in this class.

This class includes devices known as "controllers", "circuit-closers", "switches", "circuit-breakers", "interrupters", "distributers", "thermal-cut-offs", "fuses", and "electrical thermostats".

Electrical systems or circuits are excluded from this class. These systems or circuits are classified in the various electrical or art classes, depending on the particular form of electrical system or of the apparatus controlled.

SECTION II - LINES WITH OTHER CLASSES AND WITHIN THIS CLASS

A circuit maker or breaker of this class (200) can be distinguished from an electrical connector of Class 439, Electrical Connectors, in that a circuit maker or breaker comprises an assemblage of parts including both a movable contact and its mating contact wherein there is a positive (permanent) physical connection between the contacts such that a contact is restricted to move with respect to a mating contact along a prescribed path each time the circuit maker or breaker operates, whereas an electrical connector is physically separated from the distinct, mating connector each time the circuit is broken.

The combination of an electrical circuit maker or breaker with an electrical connector will be found in this class (200). For example, an electrical connector with a distinct switch actuated by a mating connector is included in this class (200), especially in subclasses 61.58+. An electrical connector that includes integrally therewith a "switching" component actuated by coupling engagement with a mating connector is to be found in Class 439. Search especially Class 439, subclass 188 for an electrical connector having circuit interrupting provision effected by mating.

An electrical connector, per se, may include movable contacts and be in the class of electrical connectors. For example, Search Class 439, subclasses 43+ for an electrical connector with a selectable circuit wherein no details of the circuit structure is set forth; subclasses 152+ for an electrical connector detachable from a mating connector by snap or quick-break action; subclasses 259+ for a connector with a contact moved laterally into engagement with a mating contact in a "zero insertion force device"; subclasses 296+ for an electrical connector with coupling movement-actuating means or retaining means in addition to the contact, especially subclasses 310+ for a retaining means with distinct movement-actuating means to move a coupling part axially; and subclasses 374+ for an electrical connector with guiding means for mating of a coupling part.

This class (200) has not been screened to verify placement according to this line.

Search should be made in the art or special application classes for circuit-controllers of such special type as to be peculiarly adapted for those arts-- e.g., telegraph keys in Class 178, Telegraphy, telephone-switches in Class 379, Telephonic Communications.

SECTION III - REFERENCES TO OTHER CLASSES

SEE OR SEARCH CLASS:

75Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures,   for patents claiming a metal composition, e.g., an alloy or a composition having a continuous phase of free metal made by consolidating metal particles.
148Metal Treatment,   subclasses 400+ for elemental metal or alloys which (a) are the product of a Class 148 process (e.g., heat treated, age hardened), (b) are claimed in terms of specific magnetic properties or as having particular internal structure which affects the magnetic properties, (c) are amorphous, (d) possess the property of shape memory, (e) are the product of a significant Class 164, Metal Founding, step (e.g., chill cast, directionally solidified, etc.), (f) are the product of the dispersion of particulate matter in molten metal which particulate retains its identity in the final product (e.g., dispersion strengthened, etc.).
178Telegraphy,   see Lines With Other Classes and Within This Class, above.
234Selective Cutting (e.g., Punching),   appropriate subclasses, and particularly subclasses 59+ for a pattern-controlled selective cutting machine wherein the pattern sensor may involve electrical circuit-controllers.
252Compositions,   subclasses 500+ for electrically conductive compositions and devices defined solely in terms of the composition of which they are composed. Included are contacts and switches defined solely in terms of their composition or stock.
313Electric Lamp and Discharge Devices,   appropriate subclasses. Class 313 is the generic class for space discharge devices. See subclasses 146+ of Class 313 for discharge devices which are provided with a movable electrode. Some discharge devices are closely analogous in structure to some types of circuit makers and breakers. See Lines With Other Classes and Within This Class in Class 313 for the distinction between a space discharge device and a circuit maker and breaker.
314Electric Lamp and Discharge Devices: Consumable Electrodes,   appropriate subclasses for electric space discharge devices designed to pass an electric current (e.g., arc, spark, etc.) between two electrodes spaced apart in a vacuum or a gas or vapor atmosphere (including atmospheric air). See Class 314 where the discharge device is provided with an electrode which is consumed during the operation and has means to feed the electrodes together to compensate for the consumption of the electrode.
333Wave Transmission Lines and Networks,   subclasses 101+ for plural channel systems including branched circuits with switching, subclass 13 for resonator type breakdown discharge system, e.g., T-R or R-T systems, and subclass 262 for long line elements and components which may perform a switching or blocking function, e.g., long line short circuiting switches and long line shorting plugs.
334Tuners,   subclasses 47+ for tuners which are varied or adjusted by a switching operation which usually involves a make and break type switch.
343Communications: Radio Wave Antennas,   subclass 768 for slot type antennas with periodic control of the slot or coupling; subclass 777 for plural wave guide type antennas with control of the individual antenna; subclass 876 for antennas with switching between the antennas and lines; and subclass 904 for antennas which may be combined with a switch.
361Electricity: Electrical Systems and Devices,   subclasses 600+ for arrangements of circuit closures on a mounting or in a housing. See also, subclass 115 for specific circuit breaker structure in protection of safety of a system or device.
379Telephonic Communications,   see Lines With Other Classes and Within This Class, above.
420Alloys or Metallic Compositions,   for alloys containing metal or metallic compositions which contain a continuous phase of metal.
427Coating Processes,   subclasses 58+ for coating processes, per se, wherein an electrical product is produced.
428Stock Material or Miscellaneous Articles,   appropriate subclasses, especially subclasses 379+ for coated electrical conductors which may include contacts and switches, but which are merely coated bases recited solely as a substrate with a particular coating therein; see also subclasses 411.1+ for a composite web or sheet which is characterized solely by the compositions of the layers.
439Electrical Connectors,   see Lines With Other Classes and Within This Class, above.

SUBCLASSES

[List of Patents for class 200 subclass 1]    1MULTIPLE CIRCUIT CONTROL:
 This subclass is indented under the class definition.  Devices in which a plurality of contacts are arranged to control two or more circuits.
(1) Note. This group includes motor and resistance controllers, per se, the combination of these with electro-magnetic control, and operators peculiar to this type of circuit control.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.01+,for devices for the periodic control of a plurality of circuits.
33+,for combinations with retarding means.
51+,especially subclasses 51.03-51.06 for multiple circuit control switches actuated by or claimed in combination with a plug, socket, or other connector coupling device.
  
[List of Patents for class 200 subclass 2]    2Loop:
 This subclass is indented under subclass 1.  Devices for connecting a loop or shunt circuit into a main circuit without at any time completely interrupting the circuit.

SEE OR SEARCH THIS CLASS, SUBCLASS:

51+,especially subclass 51.1 for such devices actuated by or claimed in combination with a plug, socket, or other connector coupling device.
  
[List of Patents for class 200 subclass 3]    3Combined thermal current:
 This subclass is indented under subclass 1.  Devices include combinations with thermal current cut outs or fuses. These devices are generally used for starting alternating-current motors.

SEE OR SEARCH CLASS:

337Electricity: Electrothermally or Thermally Actuated Switches,   for thermal-current cut outs, per se.
  
[List of Patents for class 200 subclass 4]    4Combined pivoted and reciprocating contact:
 This subclass is indented under subclass 1.  Devices in which a contactor moving in a circular path is combined with one moving in a straight line.
  
[List of Patents for class 200 subclass 5]    5Multiple switch:
 This subclass is indented under subclass 1.  Devices comprising a plurality of switches each being separately operated and usually provided with interlocking means to permit their operation only in a definite order.

SEE OR SEARCH THIS CLASS, SUBCLASS:

9,for multiple contact or pivoted contact of plural switch devices.
13,for dial-type plural switch devices.
18,for plural switch devices with operating means.
50.01+,for retarded interlocking switches.

SEE OR SEARCH CLASS:

341Coded Data Generation or Conversion,   subclasses 22+ for a keyboard controlled code transmitter.
  
[List of Patents for class 200 subclass 6]    6Pivoted contact:
 This subclass is indented under subclass 1.  Devices in which the contactors are mounted so as to move in a circular path.

SEE OR SEARCH THIS CLASS, SUBCLASS:

4,for combined pivoted and reciprocating contact switches.
37,for retarded multiple contact rotary switches.
  
[List of Patents for class 200 subclass 7]    7Combined types:
 This subclass is indented under subclass 6.  Devices comprising two or more of the following different types of pivoted contact controllers.
  
[List of Patents for class 200 subclass 8]    8Radial contact pressure:
 This subclass is indented under subclass 6.  Devices in which the contact-pressure between the fixed and movable contacts is exerted in a line radial to the arc of movement of the pivoted contact.
(1) Note. This type comprises largely the devices known as "drum-controllers".

SEE OR SEARCH THIS CLASS, SUBCLASS:

7,for radial contact pressure pivoted switch combined with other type.
17,for radial contact pressure switches with operating means.
  
[List of Patents for class 200 subclass 9]    9Plural switch:
 This subclass is indented under subclass 8.  Devices in which two or more controllers have movement relative to one another.
  
[List of Patents for class 200 subclass 10]    10Arc extinguishing and preventing:
 This subclass is indented under subclass 8.  Devices in which special means are provided for extinguishing or preventing the formation of arcs upon separation of the contacts.

SEE OR SEARCH CLASS:

218High-Voltage Switches With Arc Preventing or Extinguishing Devices,   subclasses 1+ for arc preventing or extinguishing devices
  
[List of Patents for class 200 subclass 11]    11Dial type:
 This subclass is indented under subclass 6.  Devices comprising two or more contacts arranged in the arc of a circle, the contact-surface being in a plane and having a pivoted cooperating sliding contact moving in a plane parallel to that of the contact-surfaces.

SEE OR SEARCH THIS CLASS, SUBCLASS:

7,for dial-type switch combined with other type.
17,for dial type switch with operating means.
  
[List of Patents for class 200 subclass 12]    12Electromagnetic release:
 This subclass is indented under subclass 11.  Devices in which the movable contact is biased toward a certain position, usually the off position, and is adapted to be held in some other position and released by means of an electromagnet.

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335Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,   subclasses 2+ for electromagnetically actuated circuit controllers generally.
  
[List of Patents for class 200 subclass 13]    13Plural switch:
 This subclass is indented under subclass 12.  Devices in which there are two or more controllers which have movement relative to one another.
  
[List of Patents for class 200 subclass 14]    14Plural switch:
 This subclass is indented under subclass 11.  Devices comprising two or more dial-type controllers which have movement relative to one another.
  
[List of Patents for class 200 subclass 15]    15Knife blade:
 This subclass is indented under subclass 6.  Devices comprising conducting blades adapted to make contact by being projected between conducting leaves.

SEE OR SEARCH THIS CLASS, SUBCLASS:

3,for pivoted contact knife blade switch combined with thermal current.
7,for pivoted contact knife blade switch combined with other type of pivoted contact switch.
554+,for single-contact switches of the knife-blade type.
  
[List of Patents for class 200 subclass 16]    16Reciprocating contact:
 This subclass is indented under subclass 1.  Devices in which the movable contact operates in a straight line.

SEE OR SEARCH THIS CLASS, SUBCLASS:

4,for combined reciprocating contact and pivoted contact switch.
  
[List of Patents for class 200 subclass 17]    17Operating means:
 This subclass is indented under subclass 1.  Means peculiarly adapted for the operation of multiple-circuit controllers.
(1) Note. Search should be extended to appropriate subclasses in this group of multiple-circuit control.

SEE OR SEARCH CLASS:

74Machine Element or Mechanism,   for operators of general application; and subclass 565 for controller checks.
  
[List of Patents for class 200 subclass 18]    18Plural switch:
 This subclass is indented under subclass 17.  Devices for operating two or more controllers which have movement relative to one another.

SEE OR SEARCH THIS CLASS, SUBCLASS:

9,for radial pivoted contact pressure plural switches.
13,for dial-type plural switch, electromagnetic release.
14,for dial-type plural switch.
  
[List of Patents for class 200 subclass 19.01]    19.01PERIODIC:
 This subclass is indented under the class definition.  Devices in which the circuit is made and broken intermittently or at constantly recurring intervals.
(1) Note. There is usually a constantly driven member which operates a contact or plurality of contacts to intermittently make and break the contact.
(2) Note. This group includes devices known as "interrupters", "distributors", and "flashers".
  
[List of Patents for class 200 subclass 19.02]    19.02Combined:
 This subclass is indented under subclass 19.01.  Devices comprising a plurality of circuit-controllers, one at least of which is of the intermittent type.
  
[List of Patents for class 200 subclass 19.03]    19.03Rotary and cam:
 This subclass is indented under subclass 19.02.  Subject matter in which a rotating intermittent contact is combined with a cam-operated contact.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.07,for rotary multiple contact.
19.13,for cam-operated multiple contact.
19.18,for periodic rotary contact.
  
[List of Patents for class 200 subclass 19.04]    19.04Timer:
 This subclass is indented under subclass 19.03.  Subject matter including a special clock mechanism used to perform switching operations at predetermined time intervals.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.08,for rotary multiple-contact timer.
19.29,for cam-operated periodic contact timer.
19.31,for periodic contact breaker assembly timer.
  
[List of Patents for class 200 subclass 19.05]    19.05Adjustable:
 This subclass is indented under subclass 19.03.  Subject matter in which means are provided for changing the relative positions of the fixed and movable contacts to vary the time of contact.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.11,for adjustable rotary multiple contact.
19.19,for periodic adjustable rotary contact.
19.21,for adjustable cam-operated contact.
  
[List of Patents for class 200 subclass 19.06]    19.06Multiple contacts:
 This subclass is indented under subclass 19.01.  Subject matter in which a plurality of moveable contacts are arranged for engagement with a plurality of fixed contacts.

SEE OR SEARCH THIS CLASS, SUBCLASS:

1+,for multiple-circuit control generally.
  
[List of Patents for class 200 subclass 19.07]    19.07Rotary:
 This subclass is indented under subclass 19.06.  Subject matter in which a rotating contact cooperates with a plurality of contacts.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.03,for periodic rotary and cam-operated contact.
19.18,for periodic rotary contact.
36+,for retarded clock train, plural-contact rotary switch.
  
[List of Patents for class 200 subclass 19.08]    19.08Timer:
 This subclass is indented under subclass 19.07.  Subject matter wherein the rotary contact is used in a special clock mechanism to perform switching operations at predetermined time intervals.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.04,for rotary and cam contact timer.
19.29,for cam-operated periodic contact timer.
19.31,for periodic contact breaker assembly timer.
  
[List of Patents for class 200 subclass 19.09]    19.09Commutator:
 This subclass is indented under subclass 19.07.  Subject matter wherein the rotary contact is used in a direct current generator to reverse the direction of an electric current and maintain a current flowing in one direction.
  
[List of Patents for class 200 subclass 19.1]    19.1Distributor:
 This subclass is indented under subclass 19.07.  Subject matter wherein the rotary contact is used in a device in a multicylinder engine for distributing the ignition voltage to the spark plugs in a definite sequence.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.14,for automotive distributor.
19.24,for cam-operated distributor plate.
  
[List of Patents for class 200 subclass 19.11]    19.11Adjustable:
 This subclass is indented under subclass 19.07.  Subject matter in which the relative positions of the fixed and movable contacts may be changed to vary the time of contact.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.05,for adjustable rotary and cam-operated contact.
19.19,for adjustable rotary-operated contact.
19.21,for adjustable cam-operated contact.
  
[List of Patents for class 200 subclass 19.12]    19.12Radial contact pressure:
 This subclass is indented under subclass 19.07.  Subject matter in which the contact pressure between the fixed and movable contacts is exerted in a line radial to the arc of movement of the pivoted contact.
  
[List of Patents for class 200 subclass 19.13]    19.13Cam operated:
 This subclass is indented under subclass 19.06.  Subject matter in which the movable contacts are operated by a rotating cam or cams.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.03,for periodic rotary and cam-operated contact.
19.2,for periodic cam-operated contact.
  
[List of Patents for class 200 subclass 19.14]    19.14For automotive:
 This subclass is indented under subclass 19.13.  Subject matter in which the switches are used in automobiles.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.1,for rotary multiple-contact distributor.
19.24,for periodic cam-operated distributor plate, per se.
  
[List of Patents for class 200 subclass 19.15]    19.15Programming timer:
 This subclass is indented under subclass 19.13.  Subject matter including an electromechanical timer which repeats a preset program continuously.
  
[List of Patents for class 200 subclass 19.16]    19.16For sign display:
 This subclass is indented under subclass 19.15.  Subject matter in which the switches are used for general advertising and display.
  
[List of Patents for class 200 subclass 19.17]    19.17Traffic control signs:
 This subclass is indented under subclass 19.16.  Subject matter whose use as the display sign is directly associated with a traffic control for automobiles, airplanes, elevators, etc.
  
[List of Patents for class 200 subclass 19.18]    19.18Rotary:
 This subclass is indented under subclass 19.01.  Subject matter in which a rotating contact cooperates with a fixed contact.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.03,for periodic rotary and cam-operated contact.
19.07,for rotary multiple contact.
19.13,for cam-operated multiple contact.
36+,for retarded clock train rotary switch.
  
[List of Patents for class 200 subclass 19.19]    19.19Adjustable:
 This subclass is indented under subclass 19.18.  Subject matter in which the relative positions of the fixed and movable contacts may be changed to vary the time of contact.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.05,for adjustable rotary and cam-operated contact.
19.11,for adjustable rotary multiple contact.
19.21,for adjustable cam-operated contact.
  
[List of Patents for class 200 subclass 19.2]    19.2Cam operated:
 This subclass is indented under subclass 19.01.  Subject matter in which the movable contact is actuated by a cam.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.03,for periodic rotary and cam-operated contact.
19.13,for periodic cam-operated multiple contact.
38+,for retarded clock train, cam-operated switch.
  
[List of Patents for class 200 subclass 19.21]    19.21Adjustable:
 This subclass is indented under subclass 19.2.  Subject matter wherein means are provided for changing the relative positions of the cam and cooperating contact.
(1) Note. The adjustment may be manual or automatic.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.05,for adjustable rotary and cam-operated contact.
19.11,for adjustable rotary multiple contact.
19.19,for periodic adjustable rotary contact.

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464Rotary Shafts, Gudgeons, Housings, and Flexible Couplings for Rotary Shafts,   subclasses 1+ for a speed responsive device for adjusting the relative rotational position of coupled members.
  
[List of Patents for class 200 subclass 19.22]    19.22Contact breaker assemblies:
 This subclass is indented under subclass 19.21.  Subject matter including complete adjustable operating units so that the adjustment of the breaker contact points is made during actuation of the cam.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.26,for automotive distributor contact assembly.
19.3,for periodic contact breaker assembly.
  
[List of Patents for class 200 subclass 19.23]    19.23Centrifugal advance mechanism:
 This subclass is indented under subclass 19.21.  Subject matter including a mechanism directed outward away from a center that is used for automatically advancing the time of the spark in response to a predetermined increase in engine speed.
(1) Note. The centrifugal advance mechanism may be used singly or in combination with a vacuum or suction controlled advance mechanism.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.25,for vacuum or suction controlled advance mechanism.
  
[List of Patents for class 200 subclass 19.24]    19.24Distributor plate:
 This subclass is indented under subclass 19.21.  Subject matter including a broad, thin sheet of metal to which the contact breaker structure may be mounted.
(1) Note. The mounting of the plate assembly may be adjacent to the shaft and also to the housing. The mounting structure prevents undue vibration of the contact breaker assembly.
(2) Note. The distributor plate assembly may also be referred to as "cam plate" or "interrupter plate".

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.01,for periodic breakers of general utility.
  
[List of Patents for class 200 subclass 19.25]    19.25Vacuum or suction controlled advance mechanism:
 This subclass is indented under subclass 19.21.  Subject matter wherein the process or condition of sucking controls advance mechanism, directly responsive to changes in engine temperature, automatically adjusts the time of the spark.
  
[List of Patents for class 200 subclass 19.26]    19.26Automotive distributor contact breaker assembly:
 This subclass is indented under subclass 19.2.  Subject matter wherein the cam-operated contact breaker assembly is used in automotive distributors.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.22,for adjustable contact breaker assembly.
19.3,for general contact breaker assemblies of periodic switches.
  
[List of Patents for class 200 subclass 19.27]    19.27Contact breaker lever detail:
 This subclass is indented under subclass 19.26.  Subject matter comprising details of a rigid bar turning upon an axis and its associated support members and contacts.
(1) Note. The support member includes pivot post and cam follower.
  
[List of Patents for class 200 subclass 19.28]    19.28Ignition point detail:
 This subclass is indented under subclass 19.26.  Subject matter comprising details of a set of ignition points.
  
[List of Patents for class 200 subclass 19.29]    19.29Timer:
 This subclass is indented under subclass 19.26.  Subject matter including a special clock mechanism used to perform switching operations at predetermined time interval.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.04,for rotary and cam contact timer.
19.08,for rotary multiple-contact timer.
19.31,for periodic contact breaker assembly timer.
  
[List of Patents for class 200 subclass 19.3]    19.3Contact breaker detail:
 This subclass is indented under subclass 19.01.  Subject matter comprising details of a contact breaker.
(1) Note. The contact breaker assembly may be either (a) a distributor cap-rotor combination or (b) cam operated.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.22,for adjustable contact breaker assembly.
19.26,for automotive distributor contact assembly.
  
[List of Patents for class 200 subclass 19.31]    19.31Timer:
 This subclass is indented under subclass 19.3.  Subject matter including a special clock mechanism used to perform switching operations at predetermined time intervals.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.04,for rotary and cam-contact timer.
19.08,for rotary multiple-contact timer.
19.29,for cam-operated periodic contact timer.
  
[List of Patents for class 200 subclass 19.32]    19.32Distributor cap detail:
 This subclass is indented under subclass 19.01.  Subject matter comprising details of a distributor cap which may include fixed contact arrangements, adjustability of cap to housing, electrical connection of wires to the cap, ventilation means, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.38,for protective cover means disposed on the distributor or wires for multipurpose shielding functions.
  
[List of Patents for class 200 subclass 19.33]    19.33Distributor rotor detail:
 This subclass is indented under subclass 19.01.  Subject matter comprising details of a distributor rotor-contact arrangement.
  
[List of Patents for class 200 subclass 19.34]    19.34Elevated:
 This subclass is indented under subclass 19.01.  Subject matter in which the circuit breaker is lifted up for easy access.
  
[List of Patents for class 200 subclass 19.35]    19.35Locks:
 This subclass is indented under subclass 19.01.  Subject matter including a mechanism for preventing operation of the distributor contact assembly or removal of the distributor cap.
  
[List of Patents for class 200 subclass 19.36]    19.36Magnet:
 This subclass is indented under subclass 19.01.  Subject matter which contains a plurality of switches operated periodically by a fixed or rotatable permanent magnet assembly.

SEE OR SEARCH CLASS:

123Internal-Combustion Engines,   subclass 154 for electromagnetically actuated switches.
335Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,   subclasses 205+ for permanent magnet actuated nonperiodic switches.
  
[List of Patents for class 200 subclass 19.37]    19.37Traffic signal:
 This subclass is indented under subclass 19.01.  Subject matter wherein the circuit breaker produces a set of signals operating the movement of vehicles, ships, or persons in an area.
  
[List of Patents for class 200 subclass 19.38]    19.38Wire guard:
 This subclass is indented under subclass 19.01.  Subject matter in which a protective cover means (e.g., rubber, metal, wood, etc.) encapsulates the distributor housing or cap and wires.
(1) Note. The protective cover means shields the internal distributor from moisture, etc. and also may serve as radio interference shielding means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.32,for distributor cap.
  
[List of Patents for class 200 subclass 19.39]    19.39Distributor:
 This subclass is indented under subclass 19.01.  Subject matter in which a rotary contact is used in a device in a multicylinder engine for distributing the ignition voltage to the spark plugs in a definite sequence.
  
[List of Patents for class 200 subclass 19.4]    19.4With noise preventing means:
 This subclass is indented under subclass 19.39.  Subject matter including means to suppress noise which radiates from the ignition distributor.
  
[List of Patents for class 200 subclass 33]    33RETARDED:
 This subclass is indented under the class definition.  Devices including means for timing or delaying the operation of the contacts.
(1) Note. These devices include the so-called "time-switches".

SEE OR SEARCH CLASS:

178Telegraphy,   subclass 76 for retarded circuit closers peculiar to telegraph systems.
307