CLASS 476, FRICTION GEAR TRANSMISSION SYSTEMS OR COMPONENTS |
1 | CONDITION RESPONSIVE RATIO CHANGE: |
This subclass is indented under the class definition. Subject matter wherein means are provided to change the
rotational velocity of the output body divided by the rotational
velocity of the input body, said means having mechanism to sense
a condition or change of condition in the environment of the friction
gear transmission; and, in response to such sensing, effect said
change of rotational velocity.
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2 | . Fluid control: |
This subclass is indented under subclass 1. Subject matter wherein said means to change the rotational velocity are actuated by hydraulic or pneumatic energy. | |
3 | .. And electric or magnetic control: |
This subclass is indented under subclass 2. Subject matter which further includes an electrical or magnetic actuator to influence said means to change the rotational velocity. | |
4 | . Electric or magnetic control: |
This subclass is indented under subclass 1. Subject matter wherein said means to change the rotational
velocity are actuated by electric or magnetic energy.
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5 | . Centrifugal actuator: |
This subclass is indented under subclass 1. Subject matter wherein said means include a mass rotatable about an axis with a member of said friction transmission; and wherein a component of force acting on said mass by said rotation in a direction away from said rotational axis is used to move a transmission component by said mass to effect said change of rotational velocity. | |
6 | RATIO CHANGE BY EXPANSION OR COMPRESSION OF FLEXIBLE FRICTION SURFACE: |
This subclass is indented under the class definition. Subject matter wherein at least one of said surfaces of a part in rolling contact is formed of pliable material; and wherein means are provided to change the radial distance from the axis of rotation of said part to its rolling contact surface by expanding or contracting its pliable surface so as to vary the rotational velocity of the output body divided by the rotational velocity of the input body. | |
7 | WITH FRICTION ENHANCING FLUID: |
This subclass is indented under the class definition. Subject matter and further including means for applying a flowable material to a rolling contact surface; said material having a characteristic that increases the resistance to relative slipping movement between said rolling contact surfaces. | |
8 | WITH LUBRICATION: |
This subclass is indented under the class definition. Subject matter and further including means for applying
a substance between contacting moving parts to reduce friction between the
contacting parts.
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9 | FLUID CONTROL: |
This subclass is indented under the class definition. Subject matter wherein means are provided to regulate the
operation of said transmission, and such means is actuated by hydraulic
or pneumatic energy.
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10 | . Of toroidal transmission: |
This subclass is indented under subclass 9. Subject matter wherein said transmission includes first and second surfaces facing each other and having a common rotational axis, said first surface having a semicircular concave portion spaced from its rotational axis, and said second surface having a semicircular concave portion spaced from its rotational axis and facing said concave portion of said first surface so that said concave surface portions of said first and second surface together define a doughnut-shaped cavity surrounding said rotational axis; and said transmission further includes an idler member rotatable about its own axis and positioned in said cavity to transfer rotary motion from said first to said second surface. | |
11 | ELECTRIC OR MAGNETIC CONTROL: |
This subclass is indented under the class definition. Subject matter wherein means are provided to regulate the
operation of said transmission, and such means are actuated by electric
or magnetic energy.
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12 | WITH INDICATOR OR ALARM: |
This subclass is indented under the class definition. Subject matter and further including a device for indicating
a condition thereof or for providing a warning that an undesirable
condition exists.
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13 | CYCLICAL OUTPUT: |
This subclass is indented under the class definition. Subject matter wherein means are provided to vary the rotational speed of said output body according to a predetermined pattern without operator intervention. | |
14 | WITH TRANSMISSION COOLING OR HEATING MEANS: |
This subclass is indented under the class definition. Subject matter and also including means to alter the temperature of an element thereof during operation. | |
15 | FORWARD AND REVERSE: |
This subclass is indented under the class definition. Subject matter wherein means are provided to drive said output body in both a clockwise and a counterclockwise direction. | |
16 | . Flexible belt in drive train: |
This subclass is indented under subclass 15. Subject matter wherein one of a group of interconnected
elements providing rotary drive between said input and output bodies
includes an endless flexible member.
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17 | .. Drive in one direction by direct engagement of belt pulleys: |
This subclass is indented under subclass 16. Subject matter wherein said endless flexible member extends between and drivingly engages a pair of wheels; and wherein means is provided to provide direct driving contact between surfaces of said wheels to drive said output body in said clockwise or counterclockwise direction. | |
18 | . Variable speed in forward or reverse: |
This subclass is indented under subclass 15. Subject matter wherein means are provided to change the
rotational velocity of said output body in either said clockwise
or counterclockwise direction.
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19 | .. With toothed gears in drive train: |
This subclass is indented under subclass 18. Subject matter wherein one of a group of interconnected
elements providing rotary drive between said input and output bodies
includes members having intermeshing teeth to transmit rotation
from one to the other of said members.
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20 | .. Stepped ratio change: |
This subclass is indented under subclass 18. Subject matter wherein means are provided to vary the rotational
velocity of the output body divided by the rotational velocity of
the input body, said velocity being varied in a finite number of
increments.
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21 | .. Intermediate idler between input and output gears: |
This subclass is indented under subclass 18. Subject matter wherein said rotary motion transmitting parts
include a first element rotatable by said input body, a second element
rotatably connected to said output body and a third element rotatable
about its own axis; said third element having surface portions sequentially contacting
said first and second elements to transmit rotary motion from said
first element to said second element via said third element by surface
friction of rolling contact between said third element and said
first and second elements.
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22 | ... Idler between conoidal gears: |
This subclass is indented under subclass 21. Subject matter wherein said first and second elements are
in the shape of a cone or the frustum of a cone.
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23 | ... Idler between flat discs: |
This subclass is indented under subclass 21. Subject matter wherein said first and second elements comprise
flat circular plates with said third element contacting the flat
surfaces of said plates.
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24 | .. Driving and driven gears on perpendicular axes: |
This subclass is indented under subclass 18. Subject matter wherein said rolling frictional contact is
between a first part having a first rotational axis and a second
part having a second rotational axis; said second axis being at
an angle of ninety degrees relative to said first axis.
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25 | . Drive in forward direction by direct clutch: |
This subclass is indented under subclass 15. Subject matter wherein means are provided to directly connect said input body to said output body for common directional rotation, with no ratio change, in one of said rotational directions. | |
26 | . Driving and driven gears on angularly related axes: |
This subclass is indented under subclass 15. Subject matter wherein said rolling frictional contact is
between a first part having a first rotational axis and a second
part having a second rotational axis; said second rotational axis being
different from and intersecting said first rotational axis.
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27 | PLURAL GEARING IN SERIES: |
This subclass is indented under the class definition. Subject matter wherein in addition to said parts transmitting
rotary motion by surface friction of rolling contact there is located,
in series therewith, a second assembly of elements transmitting
rotary motion from the input body to the output body by rolling
contact between engaging surfaces of said elements.
Friction gear SEE OR SEARCH CLASS:
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28 | . Flexible belt in drive train: |
This subclass is indented under subclass 27. Subject matter wherein said second assembly of elements
includes an endless flexible member.
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29 | .. Friction gearing is ratio change gearing: |
This subclass is indented under subclass 28. Subject matter wherein said parts transmitting rotary motion by surface friction of rolling contact include means to vary the rotational velocity of the output body divided by the rotational velocity of the input body. | |
30 | ... Friction gearing is stepless ratio change: |
This subclass is indented under subclass 29. Subject matter wherein said rotational velocity is varied in an infinite number of increments. | |
31 | . Plural friction gearing in series: |
This subclass is indented under subclass 27. Subject matter wherein said second assembly of elements also includes parts transmitting rotary motion by surface friction of rolling contact. | |
32 | .. Ratio change gearing and nonratio change gearing: |
This subclass is indented under subclass 31. Subject matter wherein one of said assembly of parts transmits a constant rotational velocity; and wherein the other assembly of parts transmits a variable rotational velocity. | |
33 | . Friction gearing is ratio change gearing: |
This subclass is indented under subclass 27. Subject matter wherein said parts transmitting rotary motion by surface friction of rolling contact include means to vary the rotational velocity of the output body divided by the rotational velocity of the input body. | |
34 | . One gear is toothed bevel gear: |
This subclass is indented under subclass 27. Subject matter wherein said second assembly of elements includes members having intermeshing radial teeth transmitting rotary motion, and wherein the radial teeth on said members are inclined with respect to the rotational axis of said members. | |
35 | . One gear is worm gear: |
This subclass is indented under subclass 27. Subject matter wherein said second assembly of elements for transmitting rotary motion includes a rotary body having radial teeth on the rim, with the edges of the teeth arranged as a helix extending around the rotational axis of the body. | |
36 | FRICTION GEAR IS BALL: |
This subclass is indented under the class definition. Subject matter wherein said rolling contact parts include
a spherical element for transmitting rotary motion by surface friction
of rolling contact between said spherical element and another element.
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37 | . With condition responsive means to vary contact pressure: |
This subclass is indented under subclass 36. Subject matter including means to sense a condition or change
of condition in the environment of said friction gear transmission;
and, in response to such sensing, said means act to increase pressure
of frictional contact between said rotary motion transmitting parts.
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38 | . Variable ratio: |
This subclass is indented under subclass 36. Subject matter which includes means to change the rotational
velocity of the output body divided by the rotational velocity of
the input body.
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39 | FRICTION GEAR INCLUDES IDLER ENGAGING FACING CONCAVE SURFACES: |
This subclass is indented under the class definition. Subject matter wherein said rotary motion transmitting parts include a first rotatable element having a first concave surface, a second rotatable element having a second concave surface facing the concave surface of said first rotatable element so as to define a cavity therebetween, and a third rotatable element rotatable about its own axis and mounted in said cavity; said third rotatable element including surface portions in contact with said first and second concave surfaces to transmit rotary motion from said first element to said second element via said third element by surface friction of rolling contact between said contacting surfaces. | |
40 | . Toroidal: |
This subclass is indented under subclass 39. Subject matter wherein said first and second concave portions
are radially spaced from the axis of rotation of said first and
second elements so that said cavity is substantially doughnut-shaped
and surrounds the axis of rotation of said first and second elements.
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41 | .. With condition responsive means to vary contact pressure: |
This subclass is indented under subclass 40. Subject matter including means to sense a condition or change
of condition in the environment of said friction gear transmission;
and, in response to such sensing, said means acts to increase pressure
of frictional contact between said rotary motion transmitting parts.
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42 | .. Plural toric cavities: |
This subclass is indented under subclass 40. Subject matter which further includes an additional set of concave portions defining a second substantially doughnut-shaped cavity; said second cavity also including an element rotatable about its own axis and mounted in said second cavity. | |
43 | .. Including threaded means to adjust idler: |
This subclass is indented under subclass 40. Subject matter wherein adjusting means are provided to change
the position of said third element in said cavity; and wherein said
adjusting means are actuated by rotary movement of a part having
a surface in the form of a helix around the axis of rotation of
the part.
threaded adjuster | |
44 | .. Including toothed gearing to adjust idler: |
This subclass is indented under subclass 40. Subject matter wherein adjusting means are provided to change the position of said third element in said cavity; and wherein said adjusting means are actuated by movement of first toothed element that meshes with a second toothed element to move said second element and said adjusting means. | |
45 | .. Including spring means to bias friction surfaces into engagement: |
This subclass is indented under subclass 40. Subject matter wherein one of said first, second, or third
elements is biased into contact with another of said first, second,
or third elements by a resilient member.
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46 | .. Idler supported by roller bearing: |
This subclass is indented under subclass 40. Subject matter wherein said third element is mounted for
rotation relative to a holder by rotatable bearings spaced around
the axis of rotation of said third element.
support bearing SEE OR SEARCH THIS CLASS, SUBCLASS:
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47 | STEPLESS RATIO CHANGE: |
This subclass is indented under the class definition. Subject matter wherein means are provided to vary the rotational velocity of the output body divided by the rotational velocity of the input body, said velocity being varied in an infinite number of increments. | |
48 | . With condition responsive means to vary contact pressure: |
This subclass is indented under subclass 47. Subject matter including means to sense a condition or change
of condition in the environment of said friction gear transmission;
and, in response to such sensing, said means act to increase pressure
of frictional contact between said rotary motion transmitting parts.
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49 | . Plural interdigitated disks on parallel axes: |
This subclass is indented under subclass 47. Subject matter wherein said friction gear transmission includes a first plurality of plates spaced from each other along a first rotational axis; and a second plurality of plates spaced from each other along a second rotational axis; said second plates extending into the space between said first plates, and said second plates contacting said first plates to transmit rotary motion by surface friction of rolling contact. | |
50 | . Intermediate idler between driving and driven gears: |
This subclass is indented under subclass 47. Subject matter wherein said rotary motion transmitting parts
include a first element rotatable by said input body, a second element
rotatably connected to said output body, and a third element rotatable
about its own axis; said third element having surface portions sequentially contacting
said first and second elements to transmit rotary motion from said
first element to said second element via said third element by surface
friction of rolling contact between said third element and said
first and second elements.
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51 | .. Idler between conoidal gears: |
This subclass is indented under subclass 50. Subject matter wherein said first and second elements are
in the shape of a cone or the frustum of a cone.
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52 | ... Idler is ring: |
This subclass is indented under subclass 51. Subject matter wherein said third element is an endless band. | |
53 | .... Rigid: |
This subclass is indented under subclass 52. Subject matter wherein said band is inflexible. | |
54 | .. Idler between flat disks: |
This subclass is indented under subclass 50. Subject matter wherein said first and second elements comprise
flat circular plates with said third element contacting the flat
surfaces of said plates.
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55 | . Driving and driven gears on nonlinear angularly related axes: |
This subclass is indented under subclass 47. Subject matter wherein said rolling frictional contact is between a first part having a first rotational axis and a second part having a second rotational axis; said second rotational axis being different from and intersecting said first rotational axis. | |
56 | .. Perpendicular: |
This subclass is indented under subclass 55. Subject matter wherein said second axis is at an angle of
ninety degrees relative to said first axis.
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57 | ... Disc and wheel: |
Subject matter under 56 wherein said first part is a flat, circular plate and said second part is a circular ring; and wherein rotary motion is transmitted by surface contact between the exterior round surface of the ring and the flat face of the plate. | |
58 | .... Disc on input shaft: |
This subclass is indented under subclass 57. Subject matter wherein said plate is on said input body. | |
59 | STEPPED RATIO CHANGE: |
This subclass is indented under the class definition. Subject matter wherein means are provided to vary the rotational velocity of the output body divided by the rotational velocity of the input body, said velocity being varied in a finite number of increments. | |
60 | . Stepped motor shaft: |
This subclass is indented under subclass 59. Subject matter wherein the input body comprises a shaft on a prime mover, said shaft having varied diameters spaced along its length. | |
61 | CONDITION RESPONSIVE MEANS TO VARY CONTACT PRESSURE: |
This subclass is indented under the class definition. Subject matter including means to sense a condition or change
of conditions in the environment of said friction gear transmission;
and, in response to such sensing, said means act to increase pressure
of frictional contact between said rotary motion transmitting parts.
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62 | . Centrifugal actuator: |
This subclass is indented under subclass 61. Subject matter wherein said means include a mass rotatable about an axis with a member of said friction transmission; and wherein a component of force acting on said mass by said rotation in a direction away from said rotational axis is used to move a transmission component by said mass to increase said frictional contact pressure. | |
63 | . Ball actuator: |
This subclass is indented under subclass 61. Subject matter wherein said means include a spherical member. | |
64 | FRICTION GEAR ON SHAFT OF MOVABLY MOUNTED MOTOR: |
This subclass is indented under the class definition. Subject matter wherein one of said parts in frictional rolling
contact is mounted on a prime mover shaft; and wherein said prime mover
is adjustably mounted on a support therefor to change the position
of said one of said parts.
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65 | SPRING URGES CONTACTING GEARS INTO ENGAGEMENT: |
This subclass is indented under the class definition. Subject matter wherein said parts transmitting rotary motion
are biased into rolling contact with each other by a resilient member.
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66 | . Coil spring: |
This subclass is indented under subclass 65. Subject matter wherein said resilient member is a helically coiled wire. | |
67 | FRICTION TRANSMISSION OR ELEMENT: |
This subclass is indented under the class definition. A transmission as defined in the ... or a device particularly adapted to be used with said transmission. | |
68 | . Friction gears on nonlinear angularly related axes: |
This subclass is indented under subclass 67. Subject matter wherein said rolling frictional contact is
between a first part having a first rotational axis and a second
part having a second rotational axis; said second rotational axis being
different from and intersecting said first rotational axis.
Input shaft; Output pulley SEE OR SEARCH THIS CLASS, SUBCLASS:
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69 | .. Perpendicular axes: |
This subclass is indented under subclass 68. Subject matter wherein said second axis is at an angle of
ninety degrees relative to said first axis.
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70 | . Roller bearing between gear and support: |
This subclass is indented under subclass 67. Subject matter wherein a part in rolling frictional contact
is mounted for rotation relative to a holder, by rotatable bearings
spaced about the axis of said part.
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71 | . Flexible drive shaft: |
This subclass is indented under subclass 67. Subject matter wherein a drive train between said input and output bodies including a bendable elongated member rotatable about its longitudinal axis to transmit torque. | |
72 | . Particular friction surface: |
This subclass is indented under subclass 67. Subject matter wherein significance is attributed to the configuration of the contacting portion said parts in rolling contact, or to the material from which said portion is formed. | |
73 | .. Metallic: |
This subclass is indented under subclass 72. Subject matter wherein said portion is, at least in part, formed from a metal. | |
900 | OVERLOAD RELEASE: |
This subclass is indented under the class definition. A collection of patents relating to structure for interrupting the flow of power through a drive train when torque on the output means exceeds a predetermined limit. | |
FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
This subclass has no definition. | |