U.S. PATENT AND TRADEMARK OFFICE
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U.S. Patent Classification System - Classification Definitions
as of June 30, 2000
Patents classified in a subclass may be accessed by either clicking on
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Electronic Products Branch)
Class 475
PLANETARY GEAR TRANSMISSION SYSTEMS OR COMPONENTS
Class Definition:
This is the class for planetary gear power transmission and
elements thereof, such transmission being defined as an
assembly of parts including interacting first and second
gears each having a central axis and wherein, during at least
one mode of operation, the axis of one of the gears follows a
path extending around the axis of the other gear.
(1) Note. A nominal recitation of a device for applying
power to, or receiving power from, a structure of this class
will not exclude a patent from being placed in this class.
LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
A method or apparatus for manufacturing a device of this
class is not found herein (Class 475), but is found in an
appropriate manufacturing class. See References to Other
Classes, below.
REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS:
29, Metal Working, 893 and the other subclasses in Class 29,
directed to process and apparatus of mechanical manufacture.
(See Lines With Other Classes and Within This Class, above.)
74, Machine Element or Mechanism, subclass 52 and 63+ for
mechanical movements which may include planetary gearing, 640
for gearing of the "strain wave" type, and 843+ for a
planetary gearing control interrelated with a motor control.
180, Motor Vehicles, for combinations of significant vehicle
structure which may include planetary gearing, especially 6.2
for steering by driving; 65.7 for an electric motor driven
change speed gearing; 165 for the use of a fluid accumulator
or flywheel to store and release energy; 233+ for a four
wheel drive vehicle; 292+ and 374+ for spatial relationships
of a transmission and a vehicle frame; and 369 and 372 for
planetary combinations.
184, Lubrication, for lubrication generally, and especially
subclass 6.12 which has not been screened for planetary
gearing.
188, Brakes, for brakes*, per se.
192, Clutches and Power-Stop Control, subclasses headed
"INTERRELATED POWER DELIVERY CONTROLS", which may include
planetary gearing controls combined with clutch* and motor
controls; 3.21+ and 3.34 for an impeller-turbine type fluid
drive in combination with a clutch* and brake*, respectively;
3.52+ for controls for a planetary transmission and coaxial
clutch*; and 215+ for a transmission control and brake*.
477, Interrelated Power Delivery Controls, Including Engine
Control, for interrelated control between an engine and a
transmission, clutch, or brake.
701, Data Processing: Vehicles, Navigation, and Relative
Location, 51 for a transmission control of that type.
GLOSSARY:
The following glossary will define words or phrases used in
the class and subclass definitions and are identified by an
asterisk which appears after the word, or in the instance of
a phrase, after the last word of the phrase:
BEVEL GEAR
A gear having radial teeth extending in the same general
direction as the rotational axis of the gear, but inclined
with respect to the rotational axis of the gear.
BRAKE
Mechanism to selectively or automatically stop a moving part
with respect to a stationary part.
CLUTCH
Mechanism to selectively or automatically couple two
relatively moving parts together for common movement or to
uncouple such parts.
CONDITION RESPONSIVE
Mechanism to sense a condition or change of condition in the
environment of a planetary gear transmission; and, in
response to such sensing, effect a control function on the
transmission or on a drive train* to or from such
transmission.
DIFFERENTIAL TRANSMISSION
Mechanism having separate outputs driven simultaneously from
a different member of a planetary gear transmission; the
arrangement being such that a change in speed of one of the
outputs, in at least one mode of operation, has a direct
effect on the speed of the other output.
DRIVE TRAIN
Mechanism including a group of interconnected elements which
transfers rotational power from a power source* to a load
device*.
INPUT MEMBER
Mechanism which receives rotational power from a power
source*, and transfers such rotational power to a planetary
gear transmission.
LOAD DEVICE
Mechanism which receives rotational power from an output
member* to put such rotational power to useful work.
ONE-WAY BRAKE
A brake* which automatically engages to stop a rotating part
when the rotating part attempts to rotate in a first
direction, but which permits rotation of the rotating part in
a direction opposite to said first direction.
ONE-WAY CLUTCH
A clutch* which automatically couples two rotatable parts
together for joint rotation when a first of said parts
rotates in a first direction, but which automatically
uncouples said parts when the first of said parts rotates in
a direction opposite to said first direction, or uncouples
said parts when the second part rotates faster than the first
part.
ORBIT GEAR
A gear mounted for rotation about the same axis as a planet
carrier* and having a drive face contacting a drive face of a
planet pinion* at a location radially outward from the
rotational axis of the planet pinion*.
OUTPUT MEMBER
Mechanism which receives rotational power from a planetary
gear transmission and transfers such rotational power to a
load device*.
OVERDRIVE
Mechanism wherein an output member* is driven at a greater
rotational velocity than the rotational velocity of an input
member*.
PLANET CARRIER
A device mounted for rotation about a first axis, and
carrying a planet pinion*, the planet pinion having a second
rotational axis.
PLANET PINION
A gear mounted on a planet carrier*, said carrier rotatable
about a first axis, and said gear rotatable about a second
axis.
POWER SOURCE
Agency for supplying rotational power to an input member* of
a planetary gear transmission.
SPEED RATIO
Rotational velocity of an output member* divided by the
rotational velocity of an input member*.
SPUR GEAR
A gear having radially extending teeth on the rim, wherein
the edges of the teeth extend in a direction generally
parallel with rotational axis of the gear.
SUN GEAR
A gear mounted for rotation about the same axis as the
rotational axis of a planet carrier* and having a drive face
contacting a drive face of a planet pinion* between the axis
of the planet pinion and the axis of the planet carrier.
UNDERDRIVE
Mechanism wherein an output member* is driven at a slower
rotational velocity than the rotational velocity of an input
member*.
UNITARY DRIVE
Mechanism wherein an output member is driven at the same
rotational velocity as an input member.
WORM GEAR
A gear having radial teeth on the rim with the edges of the
teeth arranged as a helix extending around the rotational
axis of the gear.
SUBCLASSES
Subclass:
1
INPUT FROM INDEPENDENT POWER SOURCES:
This subclass is indented under the class definition.
Subject matter including at least two power sources* which
act separately or in unison. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
13 for two power sources*, one of which starts the other and
said one is subsequently driven by the other.
267 for a flywheel which is, at times, used as a power
source*.
SEE OR SEARCH CLASS:
60, Power Plants, 698 for a residual system of plural
motors.
74, Machine Element or Mechanism, subclass 661 and 665+ for
related subject matter.
Subclass:
2
Condition responsive motor control:
This subclass is indented under subclass 1. Subject matter
wherein a power source* is a motor which is condition
responsive*.
SEE OR SEARCH CLASS:
477, Interrelated Power Delivery Controls, Including Engine
Control, for interrelated control between an engine and a
transmission, clutch, or brake.
Subclass:
3
Including manual input:
This subclass is indented under subclass 1. Subject matter
wherein a power source* is human force. [figure]
[caption]auxiliary hand crank; input pulley; output
SEE OR SEARCH THIS CLASS, SUBCLASS:
349 for related subject matter.
Subclass:
4
And electric motor input:
This subclass is indented under subclass 3. Subject matter
wherein a power source* includes a motor driven by
electricity. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
5 and 149+, for related subject matter.
Subclass:
5
Including electric motor input:
This subclass is indented under subclass 1. Subject matter
wherein a power source* includes a motor driven by
electricity. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
4 for subject matter including a manual and electric drive.
149 for a planetary transmission having an electric motor
drive.
Subclass:
6
Plural outputs:
This subclass is indented under subclass 1. Subject matter
including means to drive at least two load devices*. [figure]
[caption]input; input; outputs
SEE OR SEARCH THIS CLASS, SUBCLASS:
332 and see the search notes therein for related subject
matter.
Subclass:
7
Worm gear in drive train:
This subclass is indented under subclass 1. Subject matter
wherein a drive train* includes a worm gear*. [figure]
[caption]output; input; worm drive input
Subclass:
8
One-way clutch or brake in drive train:
This subclass is indented under subclass 1. Subject matter
wherein a drive train* includes a one-way clutch* or a
one-way brake*. [figure] [caption]one-way brake; engine #1;
engine #2
SEE OR SEARCH CLASS:
188, Brakes, for a one-way brake, per se.
192, Clutches and Power-Stop Control, for a one-way clutch,
per se.
Subclass:
9
Bevel planet pinion in drive train:
This subclass is indented under subclass 1. Subject matter
wherein a planetary gear transmission in a drive train*
includes a planet pinion* which is a bevel gear*. [figure]
[caption]input; input; output
SEE OR SEARCH THIS CLASS, SUBCLASS:
190 197, 230+, 273+, 306+, and 336, for related subject
matter.
Subclass:
10
Intermeshing planet pinions in drive train:
This subclass is indented under subclass 1. Subject matter
wherein a drive train* includes a plurality of planet
pinions* which intermesh with each other. [figure]
[caption]input; output; input
Subclass:
11
ROTARY PLANETATING OUTPUT:
This subclass is indented under the class definition.
Subject matter wherein a load device* is connected to a
planet pinion* for rotation about the axis of the planet
pinion* and also for rotation about the axis of a planet
carrier*. [figure]
Subclass:
12
REVERSAL OF DIRECTION OF POWER FLOW CHANGES POWER
TRANSMISSION TO ALTERNATE PATH:
This subclass is indented under the class definition.
Subject matter having two alternately usable power paths
between a single input member* and a single output member* so
arranged that (1) the interchange of the input and output
relationship or (2) the change of direction of rotation of
the input, changes the path through which the power is
transmitted. [figure] [caption]output driven in same
direction at variable speeds; input driven in opposite
directions
SEE OR SEARCH THIS CLASS, SUBCLASS:
126 for a valve, actuated in response to the reversal of
rotation of an element of a planetary transmission, to
control a fluid operated clutch or brake.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, 810.1 for means to effect
this function with nonplanetary gearing.
Subclass:
13
Input and output exchange functions:
This subclass is indented under subclass 12. Subject matter
wherein in response to the interchange of roles between the
input member* and output member* the path through which power
is transmitted is changed.
(1) Note. To be placed herein the transmission must have a
useful load at each of its input and output ends. Most of the
patents herein disclose either motor-generators or
motor-pumps used to start an engine which in turn drives the
generator or pump. [figure] [caption]one-way brake; motorpump
unit; one-way clutch; pump-motor acts as input (underdrive)
to start I.C. engine then I.C. engine drives motor-pump;
I.C. engine; one-way clutch
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, subclass 810.2 for the
exchange of input and output roles using nonplanetary
gearing.
290, Prime-Mover Dynamo Plants, subclass 38 for gearing of
this type combined with significant generator structure.
Subclass:
14
CYCLICAL OR INTERMITTENT DRIVE:
This subclass is indented under the class definition.
Subject matter wherein means is included to vary the
rotational speed of a gear of a planetary transmission
according to a predetermined pattern without operator
intervention; or wherein means is included to provide driving
force to a gear of a planetary transmission at predetermined
intervals without operator intervention. [figure]
[caption]planet carrier
Subclass:
15
Plural outputs:
This subclass is indented under subclass 14. Subject matter
including means to drive at least two load devices*. [figure]
[caption]output; input shaft
SEE OR SEARCH THIS CLASS, SUBCLASS:
332 and see the search notes therein for related subject
matter.
Subclass:
16
With means to adjust cycle or drive during operation:
This subclass is indented under subclass 14. Subject matter
which includes a control member, either manually or
automatically operated during operation of the transmission,
to alter a rotational speed pattern or driving force
interval.
Subclass:
17
Mutilated or noncircular gear in drive train:
This subclass is indented under subclass 14. Subject matter
wherein a gear in a drive train* has an irregular pattern of
gear teeth; or wherein the circumference of the gear rim is a
shape other than round. [figure] [caption]elliptical gear
Subclass:
18
STEERING BY DRIVING:
This subclass is indented under the class definition.
Subject matter wherein plural drive trains* are utilized for
driving two load devices* on opposite sides of a vehicle at
different relative speed ratios* to cause turning. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 for steering by driving where manual steering constitutes
a second power input to the drive trains.
223 for means to apply power to only one of two differential
outputs for the purpose of steering.
SEE OR SEARCH CLASS:
180, Motor Vehicles, 6.2, for steering by driving combined
with vehicle structure and see the (1) Note under subclass
6.2 for the line.
477, Interrelated Power Delivery Controls, Including Engine
Control, subclass 1 for steering by driving with prime mover
control.
Subclass:
19
With condition responsive steer control:
This subclass is indented under subclass 18. Subject matter
wherein means to cause turning is condition responsive*.
[figure] [caption]speed sensor
SEE OR SEARCH CLASS:
477, Interrelated Power Delivery Controls, Including Engine
Control, for steering by driving with prime mover control.
Subclass:
20
With cooling or lubrication:
This subclass is indented under subclass 18. Subject matter
provided with means to change the temperature of an element
of, or means to apply or direct a lubricating fluid between,
moving parts of a drive train*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
159 for drive train* lubrication generally.
161 for drive train* cooling or heating.
Subclass:
21
With infinitely variable drive:
This subclass is indented under subclass 18. Subject matter
wherein at least one of the plural drive trains* includes a
means to vary the speed ratio* steplessly. [figure]
Subclass:
22
Variable drive is fluid drive:
This subclass is indented under subclass 21. Subject matter
wherein the stepless ratio change is effected by the use of a
hydraulic or pneumatic drive train*. [figure]
Subclass:
23
Hydrostatic type:
This subclass is indented under subclass 22. Subject matter
wherein the fluid drive train* includes an expansible chamber
pump which transfers power via fluid to an expansible chamber
motor to provide useful work. [figure] [caption]pump motor;
variable speed ratio range unit
SEE OR SEARCH THIS CLASS, SUBCLASS:
72 for the general combination of planetary gearing and
hydrostatic drive.
SEE OR SEARCH CLASS:
60, Power Plants, 325, for a pump and motor combination, per
se.
Subclass:
24
Plural pump-motor sets:
This subclass is indented under subclass 23. Subject matter
wherein at least two pump-motor combinations are included in
the plural drive trains*. [figure]
Subclass:
25
Belt type:
This subclass is indented under subclass 21. Subject matter
wherein said ratio varying means comprises an endless
flexible band. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
210 for variable speed or direction belt transmission
combined with a planetary transmission.
SEE OR SEARCH CLASS:
474, Endless Belt Power Transmission Systems or Components,
appropriate subclasses, for steplessly variable belt
transmissions, per se.
Subclass:
26
Variable drive is friction drive:
This subclass is indented under subclass 21. Subject matter
wherein the stepless ratio change is effected by a drive
train* which includes toothless gearing that transmits force
by frictional contact. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
114 for fluid control of planetary friction gearing.
185 for planetary friction gearing, per se.
214 for nonplanetary variable speed or direction friction
gearing combined with a planetary transmission.
SEE OR SEARCH CLASS:
476, Friction Gear Transmission Systems or Components, for
variable speed nonplanetary friction gearing, per se.
Subclass:
27
Fluid steer control:
This subclass is indented under subclass 18. Subject matter
wherein the plural drive trains* include controlling
clutches* or brakes* which are operated by hydraulic or
pneumatic pressure. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
23 for the control of pump-motor units for steering
purposes.
Subclass:
28
With plural power paths to a planetary transmission at each
output:
This subclass is indented under subclass 18. Subject matter
wherein the plural drive trains* include a planetary gear set
adjacent each load device*, each gear set having one output
member* and two input members*. [figure] [caption]output;
output
SEE OR SEARCH THIS CLASS, SUBCLASS:
21 for this combination with a steplessly variable drive.
Subclass:
29
With planetary reaction brake steering:
This subclass is indented under subclass 18. Subject matter
wherein means for driving one load device* at a speed ratio*
different from the other load device includes a brake control
for a planetary element of one of the drive trains.
(1) Note. The planetary element to be braked may not be an
output member* and form a basis for classification in the
subclass. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
224 for means to apply power to only one of two differential
outputs, while braking the other, for the purpose of
steering.
Subclass:
30
And carrier input to planetary gearing:
This subclass is indented under subclass 29. Subject matter
wherein an input member* is a planet carrier*.
(1) Note. The carrier input is usually part of a
differential transmission*. [figure] [caption]input
Subclass:
31
FLUID DRIVE OR CONTROL OF PLANETARY GEARING:
This subclass is indented under the class definition.
Subject matter wherein (1) a planetary transmission is
combined with a hydraulic or pneumatic torque transmitting
means to form a drive train*, or (2) means is provided to
change the speed ratio* or otherwise regulate the operation
of a planetary transmission and such means is actuated, at
least in part, by hydraulic or pneumatic energy. [figure]
[caption]fluid equalizes axial thrust on gears
SEE OR SEARCH THIS CLASS, SUBCLASS:
18 for fluid drive or control in a steering by driving
arrangement.
SEE OR SEARCH CLASS:
477, Interrelated Power Delivery Controls, Including Engine
Control, for fluid drive or control of planetary gearing in
combination with prime mover control.
Subclass:
32
Diverse fluid drives:
This subclass is indented under subclass 31. Subject matter
wherein at least two different types of fluid torque
transmitting means are included in the drive train*.
[figure] [caption]engine
Subclass:
33
Plural impeller-turbine type fluid circuits:
This subclass is indented under subclass 31. Subject matter
wherein two fluid torque transmitting means are present in
the drive train* and each includes a rotary vaned pump which
acts as an input element and a coaxial rotary vaned turbine
which acts as an output element.
(1) Note. For a more detailed description of this type of
fluid drive see Class 60 subclass 330 and the notes
thereunder. [figure]
Subclass:
34
Fill and empty type:
This subclass is indented under subclass 33. Subject matter
wherein one of the fluid torque transmitting means may be
emptied or filled to change the speed ratio. [figure]
[caption]fluid volume control valve
Subclass:
35
Single impeller-turbine type fluid circuit divides or
combines plural power paths:
This subclass is indented under subclass 31. Subject matter
wherein the fluid torque transmitting means comprises at
least three coaxial bladed elements forming a fluid filled
torus, said elements being mechanically connected in power
transmitting relationship to other parts of the drive
train*.
(1) Note. Normally the circuit includes an input element,
or pump, and two or more output elements, or turbines. There
may be additionally included one or more reaction elements,
or stators, which function to redirect or guide the fluid
within the circuit and thus change the transmitted torque, or
a turbine may fulfill the function of both turbine and
stator. [figure] [caption]input; output
Subclass:
36
Planetary gearing divides paths:
This subclass is indented under subclass 35. Subject matter
wherein the planetary transmission includes a planetary gear
set made up of at least three elements, one of said elements
being directly connected to an input member* but rotatable
relative to all elements of the fluid torque transmitting
means, and each of the other two elements constituting a
power path within the drive train.* [figure]
[caption]carrier divides path
Subclass:
37
Three fluid outputs:
This subclass is indented under subclass 35. Subject matter
wherein the fluid torque transmitting means includes at least
three coaxial bladed elements each of which provides a
mechanical power output to the drive train*. [figure]
[caption]output; output; output
Subclass:
38
And stator:
This subclass is indented under subclass 37. Subject matter
wherein the fluid torque transmitting means includes a fourth
coaxial bladed element which is stationary during at least
one mode of operation as it acts to guide or redirect the
fluid within the torque transmitting means. [figure]
[caption]output; output; stator
Subclass:
39
Two fluid outputs and stator:
This subclass is indented under subclass 35. Subject matter
wherein the fluid torque transmitting means includes four
coaxial bladed elements, a first input element, two power
output elements and a fourth reaction element, stationary
during at least one mode of operation, which acts to guide or
redirect the fluid within the torque transmitting means.
[figure] [caption]output; stator; output; forward clutch;
input; low band; reverse band; output
Subclass:
40
With variable fluid drive control:
This subclass is indented under subclass 39. Subject matter
wherein means are provided to change the path of the fluid
within the torque transmitting means.
(1) Note. This is usually accomplished by changing the
angle or position of one of the blade elements. [figure]
[caption]output; stator; output; vane control
Subclass:
41
And mechanical drive path:
This subclass is indented under subclass 39. Subject matter
wherein in addition to the two outputs from the fluid torque
transmitting means a third power path is mechanically
connected to the input member*, by-passing the fluid circuit.
[figure] [caption]input; output
Subclass:
42
Control of or by fluid drive:
This subclass is indented under subclass 35. Subject matter
wherein means is provided to regulate the operation of the
fluid torque transmitting means or to affect the operation of
a mechanical drive train* in response to a condition of the
fluid torque transmitting means. [figure] [caption]fluid
control
SEE OR SEARCH THIS CLASS, SUBCLASS:
61 for related art and see the notes thereunder.
Subclass:
43
With speed or torque responsive clutch or brake control:
This subclass is indented under subclass 35. Subject matter
wherein the drive train* is controlled by a clutch* or brake*
which operates in response to the velocity or resistance to
rotary movement of a transmission part. [figure]
[caption]centrifugal control
SEE OR SEARCH THIS CLASS, SUBCLASS:
254 for other speed or torque responsive transmission
controls.
Subclass:
44
Stator rotatable in reverse direction to provide drive:
This subclass is indented under subclass 35. Subject matter
wherein one of the coaxial bladed elements functions as a
reaction member to modify the speed and direction of the
fluid in the torque transmitting means in one mode of
operation and also functions, when rotating in a direction
opposite to an input element, of the fluid torque
transmitting means to add torque to the drive train. [figure]
[caption]under high load condition stator rotated in reverse
direction
Subclass:
45
Turbine braked, stator provides reverse drive:
This subclass is indented under subclass 44. Subject matter
wherein the reverse rotation of the stator is enabled by
braking a turbine and the transmitted force results in a
reverse drive of a load device*. [figure] [caption]turbine
brake
Subclass:
46
And adds torque in forward drive:
This subclass is indented under subclass 45. Subject Matter
wherein in addition to its function as both reaction element
and reverse drive output element, in one mode of operation,
the stators` rotary force is transmitted to the load device*
in the same direction as the input element. [figure]
Subclass:
47
Impeller-turbine type fluid circuit and mechanical path in
parallel:
This subclass is indented under subclass 31. Subject matter
wherein the fluid torque transmitting means includes at least
two coaxial bladed element forming a fluid filled torus, one
functioning as an input element and the other as an output
element and a separate mechanical drive train* is provided,
by-passing the fluid torque transmitting means.
(1) Note. A mere lock-up clutch* which connects the input
and output elements of the fluid unit together is not here
but in subclasses 59+. [figure] [caption]out
SEE OR SEARCH THIS CLASS, SUBCLASS:
35 especially subclass 41, for a fluid drive and mechanical
drive in parallel where, in addition, the fluid unit has
either two inputs or two outputs.
329 for other plural power path transmissions and see the
notes thereunder.
Subclass:
48
With control of or by the fluid circuit:
This subclass is indented under subclass 47. Subject matter
wherein means is provided to regulate the operation of the
mechanical drive train* in response to a condition of the
fluid torque transmitting means. [figure] [caption]turbine
movable by 61
SEE OR SEARCH THIS CLASS, SUBCLASS:
61 for related art and see the notes thereunder.
Subclass:
49
Gearing controlled by fluid circuit condition:
This subclass is indented under subclass 48. Subject matter
wherein means is provided to affect the mechanical drive
train* in response to a condition of the fluid torque
transmitting means. [figure]
Subclass:
50
Fill and empty type fluid circuit:
This subclass is indented under subclass 48. Subject matter
wherein the operation of the fluid torque transmitting means
is regulated by controlling the amount of fluid contained
therein. [figure] [caption]fill and empty valve
Subclass:
51
With speed responsive control:
This subclass is indented under subclass 47. Subject matter
wherein means is provided to regulate the operation of the
drive train* dependent on the velocity of a part thereof.
[figure] [caption]centrifugal control
SEE OR SEARCH THIS CLASS, SUBCLASS:
254 for other speed responsive controls and see the notes
therein.
Subclass:
52
And nonplanetary gearing:
This subclass is indented under subclass 47. Subject matter
wherein in addition to the fluid torque transmitting means
and planetary transmission the drive train includes gearing
of a type not falling under the class definition.
(1) Note. The additional gearing may be either variable or
single speed. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
66 198, 207, 225, 302, and 343, for other combinations of
planetary and nonplanetary gearing.
Subclass:
53
Planetary gearing divides paths:
This subclass is indented under subclass 47. Subject matter
wherein gearing under the class definition is before the
fluid torque transmitting means in the path of power
transmission and is effective to split such path into
parallel fluid and mechanical paths, an input element of said
gearing being rotatable relative to all elements of said
fluid torque transmitting means. [figure]
Subclass:
54
Sun, orbit and carrier braked:
This subclass is indented under subclass 47. Subject matter
wherein the planetary transmission is controlled by the
braking of a sun gear*, an orbit gear* and a planet carrier*.
[figure] [caption]input
SEE OR SEARCH THIS CLASS, SUBCLASS:
276 and 280+, for a similar planetary transmission without a
fluid drive.
Subclass:
55
Sun and orbit braked:
This subclass is indented under subclass 47. Subject matter
wherein the planetary transmission is controlled by the
braking of a sun gear* and an orbit gear*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
277 279 and 282+, for a similar planetary transmission
without a fluid drive.
Subclass:
56
Sun and carrier braked:
This subclass is indented under subclass 47. Subject matter
wherein the planetary transmission is controlled by the
braking of a sun gear* and a planet carrier*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
278 and 284+, for a similar planetary transmission without a
fluid drive.
Subclass:
57
Orbit and carrier braked:
This subclass is indented under subclass 47. Subject matter
wherein the planetary transmission is controlled by the
braking of an orbit gear* and a planet carrier*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
279 and 286+, for a similar planetary transmission without a
fluid drive.
Subclass:
58
Orbits braked:
This subclass is indented under subclass 47. Subject matter
wherein the planetary transmission is controlled by the
braking of plural orbit gears*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
279 and 290+, for a similar planetary transmission without a
fluid drive.
Subclass:
59
Impeller-turbine type fluid circuit in series with planetary
gearing:
This subclass is indented under subclass 31. Subject matter
wherein the fluid torque transmitting means comprises a
plurality of coaxial bladed elements forming a fluid filled
torus having an input and an output, and only a single power
path extends between said fluid drive and the planetary
gearing.
(1) Note. The fluid drive may include a lock-up clutch.
[figure]
Subclass:
60
And condition responsive control:
This subclass is indented under subclass 59. Subject matter
wherein means is provided to regulate the operation of the
drive train* and such means is condition responsive*.
[figure] [caption]speed sensor
SEE OR SEARCH THIS CLASS, SUBCLASS:
254 for related subject matter and see the notes
thereunder.
Subclass:
61
Control of or by fluid circuit:
This subclass is indented under subclass 60. Subject matter
wherein said means regulates the operation of the fluid
torque transmitting means, or affects the operation of the
mechanical drive train* in response to a condition of the
fluid torque transmitting means. [figure] [caption]stator
torque affects fluid pressure
SEE OR SEARCH THIS CLASS, SUBCLASS:
42 and 48+, for related art.
SEE OR SEARCH CLASS:
477, Interrelated Power Delivery Controls, Including Engine
Control, subclass 61 for this combination and a motor
control.
Subclass:
62
Controls responsive to relative impeller and turbine speeds:
This subclass is indented under subclass 61. Subject matter
wherein the difference in velocities of the input and output
of the fluid torque transmitting means regulate the operation
of the drive train*. [figure] [caption]speed ratio governor;
engine; power shift gear transmission; hydraulic torque
converter
SEE OR SEARCH CLASS:
477, Interrelated Power Delivery Controls, Including Engine
Control, subclass 61 for this combination and a motor
control.
Subclass:
63
System or servo fluid pressure controlled:
This subclass is indented under subclass 62. Subject matter
wherein the relative input and output speeds of the fluid
torque transmitting means affect or regulate a fluid control
pressure. [figure]
Subclass:
64
Fluid circuit controlled:
This subclass is indented under subclass 61. Subject matter
wherein the condition responsive* means controls the fluid
torque transmitting means. [figure] [caption]compressor;
volume of fluid controlled
Subclass:
65
By lock-up clutch actuation:
This subclass is indented under subclass 64. Subject matter
wherein the fluid torque transmitting means is controlled by
mechanically connecting the input and output thereof.
[figure]
SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 3.21 for the
combination of impeller-turbine type fluid drive and clutch
in the absence of a gear transmission.
Subclass:
66
And nonplanetary gearing:
This subclass is indented under subclass 59. Subject matter
wherein in addition to the fluid torque transmitting means
and planetary transmission the drive train* includes gearing
of a type not falling under the class definition.
(1) Note. Where the nonplanetary gearing forms a power path
between the combination of subclass 59 and a differential*
the patent has been placed in subclass 71. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
52 198+, 207+, 225, 302, and 343, for other combinations of
planetary and nonplanetary gearing.
Subclass:
67
With synchronizing of positive clutch or brake:
This subclass is indented under subclass 59. Subject matter
wherein the two parts of a clutch* or a brake* are provided
with toothed surfaces which intermesh when engaged and means
is provided to reduce the relative movement between the two
parts before such engagement to reduce the impact of
engagement. [figure] [caption]synchronizer
SEE OR SEARCH THIS CLASS, SUBCLASS:
139 and 303, for clutch or brake synchronizers in other
planetary transmissions.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, 339 for meshing assisters
together with nonplanetary gearing.
192, Clutches and Power-Stop Control, 53.1 for frictional
synchronizing of positive clutches.
Subclass:
68
With nonratio brake:
This subclass is indented under subclass 59. Subject matter
combined with a brake* which is utilized for a purpose other
than effecting a particular speed ratio* in a planetary
transmission. [figure] [caption]fluid brake to slow down
turbine
SEE OR SEARCH THIS CLASS, SUBCLASS:
18 and 224, for brakes utilized in steering by driving.
113 175, 293, and 900, for other nonratio brake
combinations.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, subclass 888 for a
nonratio brake together with a prime mover control.
192, Clutches and Power-Stop Control, 215 for the
combination of transmission control and brake.
Subclass:
69
Fluid circuit controlled:
This subclass is indented under subclass 59. Subject matter
wherein the operation of the fluid torque transmitting means
is regulated. [figure] [caption]2nd pump can be engaged for
greater capacity; transmission controls
Subclass:
70
Pressure controlled:
This subclass is indented under subclass 69. Subject matter
wherein the fluid torque transmitting means is regulated by
controlling the pressure within said means. [figure]
[caption]powershift transmission control valve; powershift
transmission control elements; torque converter
Subclass:
71
And differential in series:
This subclass is indented under subclass 59. Subject matter
wherein a power path extends between the device of said
subclass and a differential transmission*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
198 for this combination without an impeller-turbine type
fluid drive in series.
Subclass:
72
Fluid pump and motor in one of plural paths to or from
planetary gearing:
This subclass is indented under subclass 31. Subject matter
wherein the drive train* consists of a transmission under the
class definition having two power paths, one of which is a
fluid torque transmitting drive comprising means to
pressurize a fluid and means responsive to such pressure to
convert such pressure to useful mechanical work.
SEE OR SEARCH THIS CLASS, SUBCLASS:
23 for this type of drive used for steering by driving.
329 for other plural power path transmissions and see the
notes thereunder.
SEE OR SEARCH CLASS:
60, Power Plants, 325 for pump and motor combinations per
se.
477, Interrelated Power Delivery Controls, Including Engine
Control, subclass 52 for this combination together with
prime mover control. [figure] [caption]output; pump; input;
motor
Subclass:
73
Plural fluid power paths to planetary gearing:
This subclass is indented under subclass 72. Subject matter
wherein the plural power paths are each input paths to the
planetary gearing and each input path consists of a fluid
drive. [figure] [caption]motor; pump; planetary gearing;
load; motor
Subclass:
74
Plural outputs:
This subclass is indented under subclass 72. Subject matter
wherein the drive train* includes means to drive two load
devices*. [figure] [caption]output; output
SEE OR SEARCH THIS CLASS, SUBCLASS:
18 for plural outputs in a steering by driving combination.
332 for other plural output transmissions and see the notes
therein.
Subclass:
-2
inverting means are utilized for transferring torque in the
drive train*.
Subclass:
76
Speed responsive control:
This subclass is indented under subclass 72. Subject matter
wherein means is provided to regulate the operation of the
drive train* dependent on the velocity of a part thereof.
[figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
254 for related subject matter and see the notes there
under.
Subclass:
77
Constant speed output:
This subclass is indented under subclass 76. Subject matter
wherein the regulation is such that the load device* rotates
at a constant velocity. [figure] [caption]planetary gear
Subclass:
78
Interrelated fluid unit and gear control:
This subclass is indented under subclass 72. Subject matter
wherein means are provided to regulate the operation of the
fluid drive and planetary transmission and such regulation is
interdependent or operated by a common control. [figure]
[caption]forward; reverse
Subclass:
79
With constant speed ratio between input and one fluid unit:
This subclass is indented under subclass 78. Subject matter
wherein an input member* has a constant speed ratio* with an
input of the fluid drive in all conditions of operation.
[figure] [caption]input; output
Subclass:
80
Plural speed ranges:
This subclass is indented under subclass 72. Subject matter
wherein the fluid drive provides a stepless speed ratio*
variation capability and wherein a speed ratio* of a
planetary transmission is also variable to result in the
stepless variation at a plurality of speed ratio* levels.
[figure]
Subclass:
81
With constant speed ratio between input and one fluid unit:
This subclass is indented under subclass 80. Subject matter
wherein an input member* has a constant speed ratio* with the
fluid drive in all conditions of operation. [figure]
[caption]pump; motor
Subclass:
82
Having single planet carrier:
This subclass is indented under subclass 81. Subject matter
wherein the planetary transmission includes but one planet
carrier*.
(1) Note. A Planet carrier* may include more than one set
of planet pinions* mounted thereon as long as the carrier is
unitary. [figure]
Subclass:
83
Pump and motor in series with planetary gearing:
This subclass is indented under subclass 31. Subject matter
wherein a means to pressurize a fluid and means responsive to
such pressure to convert such pressure to useful mechanical
work is placed in tandem with a transmission under the class
definition and a single power path extends there between.
(1) Note. The claiming of a pump is not necessary for
placement herein. [figure] [caption]inboard ; outboard
SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, subclass 55 for
related art and see the notes thereunder.
180, Motor Vehicles, 305 for this transmission combined with
significant vehicle structure.
Subclass:
84
Control of differential planetary gearing:
This subclass is indented under subclass 31. Subject matter
wherein the operation of a differential transmission* is
regulated by fluid means. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
220 for differential transmissions,* per se.
Subclass:
85
Special fluid:
This subclass is indented under subclass 84. Subject matter
wherein significance is attributed to the type of fluid, or
the physical characteristics thereof, used to control the
differential transmission*. [figure] [caption]fluid is
silicone polymer
SEE OR SEARCH THIS CLASS, SUBCLASS:
160 for a fluid which is used to lubricate a differential.
Subclass:
86
By fluid operated mechanical clutch:
This subclass is indented under subclass 84. Subject matter
wherein the differential is controlled by a fluid actuated
mechanical clutch*. [figure]
Subclass:
87
Operated by viscous drag:
This subclass is indented under subclass 86. Subject matter
wherein the mechanical clutch* is controlled by the retarding
force transmitted between two relatively rotating parts by a
fluid medium. [figure] [caption]Viscus Drag between 76 & 86
engages one-way clutch
Subclass:
88
Operated by a pump responsive to differential action:
This subclass is indented under subclass 86. Subject matter
wherein the mechanical clutch is controlled by fluid from a
pressure source, such source being activated in response to
relative rotation of the outputs of the differential
transmission*.
Subclass:
89
Fluid resistance controls relative rotation of outputs:
This subclass is indented under subclass 84. Subject matter
wherein fluid in contact with relatively rotatable parts of
the differential transmission* is effective to retard such
relative rotation. [figure]
Subclass:
90
Fluid pumped by differential gears:
This subclass is indented under subclass 89. Subject matter
wherein the gears of the differential transmission* act as
pumps, to pressurize a fluid contained therein, the
resistance to flow of such fluid acting to retard relative
rotation of the differential outputs. [figure]
Subclass:
91
Fluid resistance inhibits relative rotation:
This subclass is indented under subclass 31. Subject matter
wherein either the weight or momentum of a fluid mass or a
fluids resistance to flow, is effective to retard the
rotation of an element of a planetary transmission.
(1) Note. Both the subclasses hereunder and Class 192,
Clutches and Power-Stop Control, subclass 61 contain
planetary units including gear pumps so arranged that when
fluid flow through the pump is unrestricted the unit slips,
and as fluid flow is restricted relative rotation of the
planetary elements is inhibited. Where the planet pinion of
the unit drives a separate gear pump the art is found herein
but where the planet pinion and cooperating sun and orbit
together constitute the gear pump the art will be found in
Class 192, subclass 61. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
89 for control of a differential transmission* by fluid
resistance.
SEE OR SEARCH CLASS:
188, Brakes, 266 for internal resistance motion retarders,
per se.
Subclass:
92
Fluid damper for reaction element:
This subclass is indented under subclass 91. Subject matter
wherein a liquid or gas medium resists movement of an
otherwise stationary planetary gear member. [figure]
[caption]fluid buffer for orbit
Subclass:
93
Valve inhibits fluid flow:
This subclass is indented under subclass 91. Subject matter
wherein the resistance to fluid flow is controlled by a
passage way that is opened to a variable degree.
Subclass:
94
Speed or torque responsive valve control:
This subclass is indented under subclass 93. Subject matter
wherein the variable opening of the valve is regulated by
either the velocity or the resistance to rotary movement of a
transmission part. [figure] [caption]torque responsive to
move valve 100
Subclass:
95
Centrifugally actuated valve controls fluid clutch:
This subclass is indented under subclass 94. Subject matter
wherein the valve is regulated by the speed of an element of
the transmission as measured by centrifugal force and such
regulation is effective to retard the rotation of one rotary
element of a transmission with respect to another rotary
element thereof. [figure]
Subclass:
96
Clutch connects planet pinion and carrier:
This subclass is indented under subclass 95. Subject matter
wherein the said one rotary element is a planet pinion* and
the said another rotary element is a planet carrier*.
[figure]
Subclass:
97
With fluid brake control:
This subclass is indented under subclass 95. Subject matter
wherein in addition to the clutch control means, resistance
to fluid flow is utilized to retard the rotation of a
planetary element with respect to a stationary element.
[figure] [caption]centrifugal weight 37 closes valve 35 of
clutch; fluid brake 26, 27 stops this shaft; output; input
Subclass:
98
Centrifugally actuated valve controls fluid brake:
This subclass is indented under subclass 94. Subject matter
wherein the valve is regulated by the speed of an element of
a transmission as measured by centrifugal force and such
regulation is effective to retard the rotation of an element
of the planetary transmission with respect to a stationary
element. [figure]
Subclass:
99
Interrelated valve control and mechanical clutch or brake:
This subclass is indented under subclass 93. Subject matter
wherein there is provided means to regulate a valve, which is
effective to retard an element of a planetary transmission,
and means to operate a mechanical clutch* or brake*, the
operation of one of said means affecting the other, or said
means being a common means. [figure]
Subclass:
100
Valve control and mechanical clutch:
This subclass is indented under subclass 99. Subject matter
wherein the operation of the valve is related to the
operation of a mechanical clutch*. [figure]
Subclass:
101
Pump pressure engages mechanical clutch:
This subclass is indented under subclass 100. Subject matter
wherein the valve controls the outlet of a fluid pressurizing
device which in turn retards rotation of a planetary element
and the pressurized fluid provides the force to engage a
mechanical clutch*. [figure]
Subclass:
102
Fluid brake(s) for plural planetary elements:
This subclass is indented under subclass 93. Subject matter
wherein a valve controls the fluid flow from a pump which, in
turn, retards the rotation of two elements of a planetary
transmission with relation to a stationary element. [figure]
Subclass:
103
Plural fluid clutches:
This subclass is indented under subclass 93. Subject matter
wherein the transmission includes plural fluid clutches*.
SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, subclass 61. See the
(1) Note under subclass 91 of Class 475.
Subclass:
104
Fluid brake for planetary element:
This subclass is indented under subclass 93. Subject matter
wherein the valve controls a fluid brake*. [figure]
Subclass:
105
And fluid clutch:
This subclass is indented under subclass 104. Subject matter
wherein there is also provided a fluid clutch*.
Subclass:
106
Bevel gearing:
This subclass is indented under subclass 104. Subject matter
wherein the planetary transmission includes a planet pinion*
that is a bevel gear*.
Subclass:
107
Sun or orbit braked:
This subclass is indented under subclass 104. Subject matter
wherein the planetary element braked is either a sun gear* or
an orbit gear*.
Subclass:
108
Fluid clutch includes gear type pump:
This subclass is indented under subclass 93. Subject matter
wherein the valve is effective to restrict fluid flow from a
fluid pressurizing means, said pressurizing means being
operative to operate a fluid clutch* and said pressurizing
means comprising interengaging rotating members. [figure]
SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, subclass 61. See the
(1) Note under subclass 91 of Class 475.
418, Rotary Expansible Chamber Devices, 54 and 191+ for gear
type pumps, per se.
Subclass:
109
Planet clutched to carrier:
This subclass is indented under subclass 93. Subject matter
wherein a pump is supported by a planet carrier* and is
driven by a planet pinion*, the valve being effective to
restrict flow from said pump.
SEE OR SEARCH THIS CLASS, SUBCLASS:
96 for this combination controlled by a speed responsive
valve.
Subclass:
110
With reversing means:
This subclass is indented under subclass 109. Subject matter
wherein a means is also provided to change the direction of
rotation of an output member*.
Subclass:
111
Planet clutched to fluid flywheel:
This subclass is indented under subclass 91. Subject matter
wherein a rotatable fluid containing housing concentric with
the planetary transmission surrounds vaned elements connected
to planet pinions*; the housing, when rotated, forming a
radially outer layer of fluid that is effective to retard the
rotation of the vaned elements relative to the housing.
[figure]
Subclass:
112
Fluid container connected to planet pinion:
This subclass is indented under subclass 91. Subject matter
wherein a fluid containing housing is connected to a planet
pinion*. [figure] [caption]fluid
SEE OR SEARCH THIS CLASS, SUBCLASS:
255 for an eccentrically weighted planet of a nonfluid
type.
Subclass:
113
Impeller-turbine type fluid unit used as brake:
This subclass is indented under subclass 91. Subject matter
wherein at least two coaxial bladed elements form a fluid
filled torus, one of said elements being either stationary or
its motion controlled to retard another of said elements
which is connected to a rotary planetary element. [figure]
SEE OR SEARCH CLASS:
188, Brakes, subclass 296, for impeller-turbine type brakes,
per se.
192, Clutches and Power-Stop Control, 215 for related art.
477, Interrelated Power Delivery Controls, Including Engine
Control, subclass 59 for hydrodynamic braking in combination
with a motor control.
Subclass:
114
Fluid control of friction planetary gearing:
This subclass is indented under subclass 31. Subject matter
wherein the planetary transmission that is regulated by fluid
pressure includes a toothless planet pinion* capable of
transmitting force by frictional contact.
Subclass:
115
Stepless ratio change controlled:
This subclass is indented under subclass 114. Subject matter
wherein the planetary transmission is capable of a stepless
speed ratio* change and such change is regulated by means of
fluid pressure. [figure]
Subclass:
116
Fluid controlled mechanical clutch or brake:
This subclass is indented under subclass 31. Subject matter
wherein a clutch* or brake* operated by fluid pressure is
effective to regulate the speed ratio* of the planetary
transmission.
SEE OR SEARCH THIS CLASS, SUBCLASS:
209 for an interrelated control between a planetary and
nonplanetary transmission.
SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 3.51 for interrelated
clutch and transmission controls wherein the clutch and
transmission is in series and subclasses 215+ for
transmission control and brake where the brake is effective
to retard the load device*. [figure]
Subclass:
117
Temperature responsive control:
This subclass is indented under subclass 116. Subject matter
wherein the heat level of the transmission, a portion thereof
or its surroundings affects the regulation thereof. [figure]
Subclass:
118
Speed responsive control:
This subclass is indented under subclass 116. Subject matter
wherein velocity of a transmission part affects a control for
the clutch* or brake*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
254 for other speed responsive transmission controls and see
the notes thereunder.
SEE OR SEARCH CLASS:
137, Fluid Handling, 47 for speed responsive valves, per
se.
477, Interrelated Power Delivery Controls, Including Engine
Control, for a prime mover control which may be combined with
a speed responsive control.
Subclass:
119
Safety device:
This subclass is indented under subclass 118. Subject matter
wherein the control prevents the transmission or the means
driving the transmission from being damaged.
(1) Note. For example, the speed responsive means may
prevent a shift valve or selector valve from shifting at too
high a speed. [figure] [caption]manual valve; prevents manual
downshift at high speeds to direct drive clutch 60; pump
pressure; to over drive brake 40; governor; governor
inhibitor valve
Subclass:
120
Pressure control:
This subclass is indented under subclass 118. Subject matter
wherein the control affects the force exerted by the fluid
utilized to regulate the operation of the transmission.
Subclass:
121
Ratio change:
This subclass is indented under subclass 118. Subject matter
wherein the control is effective to change the speed ratio*
of the transmission. [figure] [caption]to oil pump
Subclass:
122
Speed responsive valve control:
This subclass is indented under subclass 121. Subject matter
wherein the speed ratio* change is effected by a valve which
is moved in response to the velocity of a transmission part.
Subclass:
123
Electrical control:
This subclass is indented under subclass 122. Subject matter
wherein between the transmission part and the valve is an
electrical or magnetic device.
Subclass:
124
Centrifugal control:
This subclass is indented under subclass 122. Subject matter
wherein the velocity of the transmission part is sensed by a
centrifugal device.
Subclass:
125
Torque responsive control:
This subclass is indented under subclass 116. Subject matter
wherein force exerted to rotate a transmission part affects
control of the clutch* or brake*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
254 for other torque responsive transmission controls and
see the notes there under.
Subclass:
126
Responsive to torque reversal:
This subclass is indented under subclass 125. Subject matter
wherein the control of the clutch* or brake* is affected by a
valve and such valve is actuated responsive to a change in
direction of rotation or relative rotation of a planetary
drive transmission part or parts.
Subclass:
127
Pressure regulation:
This subclass is indented under subclass 116. Subject matter
wherein force exerted by the fluid that operates the clutch*
or brake* is controlled.
Subclass:
128
Valving controls shift timing:
This subclass is indented under subclass 127. Subject matter
wherein means is provided to regulate the speed or sequence
of engagement or disengagement of a clutch* or brake*.
[figure] [figure] [caption]clutch motors; control valves;
time; time; time
SEE OR SEARCH CLASS:
477, Interrelated Power Delivery Controls, Including Engine
Control, especially 143 for shift timing control combined
with motor control.
Subclass:
129
With fluid accumulator:
This subclass is indented under subclass 128. Subject matter
which further includes a variable capacity chamber which is
effective to control the buildup of fluid pressure.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, 30 for accumulators, per
se.
Subclass:
130
Manual regulator:
This subclass is indented under subclass 127. Subject matter
wherein means to regulate the pressure is controlled by human
force.
SEE OR SEARCH CLASS:
477, Interrelated Power Delivery Controls, Including Engine
Control, for pressure regulation which may be controlled by
actuation of a vehicle accelerator pedal.
Subclass:
131
Manually actuated ratio selector:
This subclass is indented under subclass 116. Subject matter
wherein significance is attributed to a human operated device
utilized to select a particular speed ratio*.
Subclass:
132
Electrical:
This subclass is indented under subclass 131. Subject matter
wherein said device operates an electrical control.
Subclass:
133
With safety valve:
This subclass is indented under subclass 131. Subject matter
wherein said device is a valve and means is associated with
said valve to prevent damage to the transmission.
SEE OR SEARCH THIS CLASS, SUBCLASS:
119 for a safety device controlled in response to speed.
Subclass:
134
Plural selector valves:
This subclass is indented under subclass 131. Subject matter
wherein said device includes a plurality of valves.
Subclass:
135
Rotary valve:
This subclass is indented under subclass 131. Subject matter
wherein said device is a valve which turns about an axis.
Subclass:
136
With ancillary pump or governor drive:
This subclass is indented under subclass 116. Subject matter
wherein significance is attributed to a drive of an auxiliary
pressurizing device or speed responsive valve utilized in
fluid control for the transmission. [figure] [caption]pump;
engine; tran
Subclass:
137
Plural pumps:
This subclass is indented under subclass 136. Subject matter
wherein more than one said device is driven to provide
pressurized fluid for control of the transmission.
SEE OR SEARCH CLASS:
477, Interrelated Power Delivery Controls, Including Engine
Control, for plural pumps used in transmission control which
also includes motor control.
Subclass:
138
With positive clutch or brake:
This subclass is indented under subclass 116. Subject matter
wherein a clutch* or brake* includes two parts each having
teeth which are capable, of meshing, one with the other, to
effect a positive, as opposed to a frictional connection
therebetween.
(1) Note. The positive clutch* or brake* need not be fluid
actuated to be found herein.
Subclass:
139
And friction synchronizer:
This subclass is indented under subclass 138. Subject matter
wherein frictional means is provided to equalize the speed of
the two clutch* or brake* parts before the teeth thereof
intermesh.
SEE OR SEARCH THIS CLASS, SUBCLASS:
67 and 303, for other synchronizing clutches or brakes.
SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 53 for friction
synchronizers, per se.
Subclass:
140
Spring engaged, fluid released clutch or brake device:
This subclass is indented under subclass 116. Subject matter
wherein two parts of the clutch* or brake* are separated by
fluid pressure against the resistance of a spring. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
144 for one-way devices that may be placed in inoperative
position by means of fluid pressure and operative position by
means of a spring.
Subclass:
141
Plural devices simultaneously spring engaged:
This subclass is indented under subclass 140. Subject matter
wherein more than one clutch or brake is engaged by spring
pressure at the same time.
SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 215 for related
subject matter.
Subclass:
142
Single fluid motor engages one device and releases other:
This subclass is indented under subclass 140. Subject matter
wherein pressurized fluid is utilized to move a mechanical
element and such element is effective to connect the two
parts of a clutch* or brake* and disconnect the two parts of
another clutch* or brake*. [figure]
Subclass:
143
Expanding fluid motor chamber mechanically contracts second
motor:
This subclass is indented under subclass 116. Subject matter
wherein the clutch* or brake* is actuated by admitting
pressurized fluid to an expansible chamber and the expansion
of such chamber effects the collapse of a second fluid
expansible chamber.
(1) Note. To be placed here each fluid motor must control a
different clutch* or brake*. A double acting motor for one
clutch* or brake* is in subclass 146.
Subclass:
144
Fluid controlled one-way devices:
This subclass is indented under subclass 116. Subject matter
wherein the fluid pressure is operative to control a one-way
clutch* or a one-way brake*.
SEE OR SEARCH CLASS:
188, Brakes, 82.1 for one-way brakes, per se.
192, Clutches and Power-Stop Control, 41 for one-way
clutches, per se.
Subclass:
145
Fluid motor controls device through cam or lever:
This subclass is indented under subclass 116. Subject matter
wherein a chamber wall, expanded by pressurized fluid, is
effective to actuate a clutch* or brake* through the medium
of a cam or lever.
Subclass:
146
Fluid motor structure:
This subclass is indented under subclass 116. Subject matter
herein significance is attributed to the configuration,
support or spatial arrangement of an expansible chamber motor
or motors which effect the actuation of the clutch* or
brake*.
Subclass:
147
Radially expanding motor:
This subclass is indented under subclass 146. Subject matter
wherein the fluid motor expands in a radial direction with
respect to the rotary axis of the transmission.
Subclass:
148
With one-way device:
This subclass is indented under subclass 146. Subject matter
and further including a one-way clutch* or one-way brake*.
Subclass:
149
ELECTRIC OR MAGNETIC DRIVE OR CONTROL:
This subclass is indented under the class definition.
Subject matter wherein (1) the planetary transmission is
combined with an electric motor or generator to form a drive
train or (2) means is provided to change the speed ratio* or
otherwise regulate the operation of the planetary
transmission by means of electric or magnetic energy.
(1) Note. Where the electric or magnetic energy regulates a
fluid drive or a fluid control that in turn controls the
transmission, the patents have been placed with the fluid
drive or control under subclass 31. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
4 and 5, for electric motor drives where plural power
sources drives a planetary transmission.
13 for electric motors used as engine starters that are
subsequently driven by the engine.
SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 129 and 150 for safety
devices and overload controls that may turn off power from an
electric motor.
310, Electrical Generator or Motor Structure, subclass 83
for the combination with significant dynamo-electric machine
structure.
318, Electricity, Motive Power Systems, 12 and 15 for Class
310 structure having a significant electrical circuit. See
section IE6B of the class 318 definitions for the line with
this class.
Subclass:
150
Differential drive or control:
This subclass is indented under subclass 149. Subject matter
wherein the electric or magnetic drive or control is
associated with a differential transmission*.
Subclass:
151
Plural power paths:
This subclass is indented under subclass 149. Subject matter
wherein two power paths extend to or from a planetary
transmission, between an input member* and an output member*,
and one path includes an electric or magnetic drive.
(1) Note. A clutch* that locks up the planetary
transmission for unitary drive* is not considered a separate
power path. See other subclasses under subclass 149.
SEE OR SEARCH THIS CLASS, SUBCLASS:
21 for this type drive used in a steering by driving
combination.
47 and 72+, for similar gearing arrangements but using a
fluid drive as the variable transmission.
SEE OR SEARCH CLASS:
318, Electricity, Motive Power Systems, subclass 8 for
similar systems where the generated electricity is not wholly
utilized in the motor-generator systems.
Subclass:
152
With nonplanetary drive to electric or magnetic path:
This subclass is indented under subclass 151. Subject matter
wherein the input member* is either directly connected to the
input of the electric or magnetic path or drivingly connected
thereto by gearing not coming under the class definition.
Subclass:
153
With condition responsive control:
This subclass is indented under subclass 149. Subject matter
herein the electric or magnetic drive or control is regulated
by condition responsive* means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
254 for other condition responsive* controls and see the
notes thereunder.
Subclass:
154
With electric or magnetic controlled brake:
This subclass is indented under subclass 149. Subject matter
wherein the speed ratio* of the planetary transmission is
regulated by means of an electrically or magnetically
actuated brake*.
Subclass:
155
And manual speed selector:
This subclass is indented under subclass 154. Subject matter
wherein a human force operated device is used to choose the
speed ratio* of the transmission.
SEE OR SEARCH THIS CLASS, SUBCLASS:
132 for a manually operated speed selector of the electrical
type that in turn regulates a fluid control.
Subclass:
156
Electric or magnetic device disengages brake:
This subclass is indented under subclass 154. Subject matter
wherein the electric or magnetic energy is effective to
separate one part of the brake* from the other.
Subclass:
157
Electric or magnetic engaged brake and spring engaged lockup
clutch:
This subclass is indented under subclass 154. Subject matter
wherein the electric or magnetic energy is effective to
engage the two parts of a brake* and a spring is effective to
engage the two parts of a clutch* to provide unitary drive*.
Subclass:
158
WITH INDICATOR OR ALARM:
This subclass is indented under the class definition.
Subject matter and further including a separate device for
indicating a condition thereof or for providing a warning
that an undesirable condition exists.
SEE OR SEARCH CLASS:
116, Signals and Indicators, for indicators and alarms in
general.
Subclass:
159
WITH LUBRICATION:
This subclass is indented under the class definition.
Subject matter provided with means for directing or applying
a substance between moving parts to reduce friction between
the moving parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
20 for lubrication in a steering by driving combination.
SEE OR SEARCH CLASS:
184, Lubrication, for lubricating devices and systems in
general.
Subclass:
160
For differential planetary gearing:
This subclass is indented under subclass 159. Subject matter
wherein the moving parts comprise a differential
transmission*.
Subclass:
161
WITH TRANSMISSION COOLING OR HEATING MEANS:
This subclass is indented under the class definition.
Subject matter and further including means to alter the
temperature of an element thereof during operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
20 for cooling or heating in a steering by driving
combination.
Subclass:
162
PLANET PERIPHERY SURROUNDS AXIS OF INTERACTING GEAR (E.G.,
ECCENTRICALLY DRIVEN TRANSMISSION):
This subclass is indented under the class definition.
Subject matter wherein a first gear has an axis which follows
a path around the axis of a second gear, and wherein the
external periphery of the first gear surrounds the axis of
the second gear. [figure] [figure]
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, subclass 640 for similar
structure using a cam-operated flexible gear, sometimes
referred to as "strain-wave" gearing.
Subclass:
163
Wabbler transmission:
This subclass is indented under subclass 162. Subject matter
wherein drive surfaces of the gears face each other in an
axial direction. [figure]
Subclass:
164
Single member has oppositely axially facing tooth sets:
This subclass is indented under subclass 163. Subject matter
wherein one of the gears has tooth sets one each of
oppositely axially facing surfaces [figure]
Subclass:
165
Friction gearing:
This subclass is indented under subclass 162. Subject matter
in which rotary motion is transmitted from one of said gears
to the other by frictional engagement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
183 for related subject matter.
Subclass:
166
Variable speed:
This subclass is indented under subclass 165. Subject matter
wherein there is included means to vary the speed ratio*.
Subclass:
167
Link chain gearing:
This subclass is indented under subclass 162. Subject matter
wherein one of said gears comprises an endless member formed
of interconnected links forming openings to receive cogs on
the periphery of the other of said gears. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
182 for related subject matter.
Subclass:
168
Gear teeth comprise rolling bodies:
This subclass is indented under subclass 162. Subject matter
wherein surface contact between said first and second gears
is via smooth surface cylinders or balls positioned between
facing surfaces of said first and second gears. [figure]
Subclass:
169
Means to change speed ratio between input and output:
This subclass is indented under subclass 162. Subject matter
including means selectively or automatically actuated to vary
the speed ratio*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
13 where the speed ratio* change is accompanied by an
exchange in function of an input member* and an output
member*.
166 for means to change the speed ratio* of friction
gearing.
Subclass:
170
Variable eccentricity:
This subclass is indented under subclass 169. Subject matter
wherein the varying of the speed ratio* includes means to
vary the radius of said path.
Subclass:
171
Plural power paths to planetary gearing:
This subclass is indented under subclass 169. Subject matter
wherein a power transmitting path extends between an input
member* and each of two elements of a planetary transmission
while an output member* is driven by a third planetary
element.
Subclass:
172
Condition responsive control:
This subclass is indented under subclass 169. Subject matter
wherein said means is affected by a condition responsive*
control.
SEE OR SEARCH THIS CLASS, SUBCLASS:
254 and see the search notes therein for related subject
matter.
Subclass:
173
Plural planetary elements braked:
This subclass is indented under subclass 169. Subject matter
wherein said means includes structure for applying a brake*
to two planetary elements.
Subclass:
174
Plural outputs:
This subclass is indented under subclass 162. Subject matter
including means to drive at least two load devices*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
322 see the search notes therein for related subject
matter.
Subclass:
175
With releasable clutch or brake:
This subclass is indented under subclass 162. Subject matter
which further has a selectively or automatically actuatable
clutch* or brake* in a drive train* for said gears. [figure]
[figure] [caption]releasable brake to establish or release
drive
SEE OR SEARCH THIS CLASS, SUBCLASS:
68 and 900, for related subject matter, and 169+ for a
clutch or brake to change speed ratio in this kind of
gearing.
Subclass:
176
Gear has plural circumferential tooth sets:
This subclass is indented under subclass 162. Subject matter
wherein said first or second gear has a plurality of sets of
drive teeth protecting therefrom, said sets being connected
to each other for common movement. [figure]
Subclass:
177
Internal and external tooth sets:
This subclass is indented under subclass 176. Subject matter
wherein the teeth of one of said sets of teeth project
inwardly, and the teeth of the other of said sets of teeth
project outwardly. [figure]
Subclass:
178
Circumferentially spaced connector pins:
This subclass is indented under subclass 162. Subject matter
wherein a plurality of peg-like elements are spaced about the
axis of one of said gears to guide said gear for relative
motion with respect to a stationary reaction element, or to
guide said gear for relative motion with respect to another
rotary member. [figure]
Subclass:
179
Roller bearing surrounds pin:
This subclass is indented under subclass 178. Subject matter
wherein said peg-like elements are guided for movement by
roller bearings. [figure]
Subclass:
180
Particular gear teeth:
This subclass is indented under subclass 162. Subject matter
wherein significance is attributed to the configuration or
material of a tooth used in one of said gears. [figure]
[caption]Resiliently deformable teeth
SEE OR SEARCH THIS CLASS, SUBCLASS:
344 for related subject matter
Subclass:
181
Particular counterweight:
This subclass is indented under subclass 162. Subject matter
wherein significance is attributed to the configuration,
material or location of a mass to balance one of said gears
or rotating drive train* members.
Subclass:
182
PLANET PINION ENGAGES FLEXIBLE BELT OR CHAIN:
This subclass is indented under the class definition.
Subject matter wherein a planet pinion* has a driving surface
which is in driving engagement with an endless pliant member.
[figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
167 for related subject matter.
Subclass:
183
PLANET PINION IS FRICTION GEAR:
This subclass is indented under the class definition.
Subject matter wherein a planet pinion includes a drive
surface which receives or transmits rotary motion to a mating
gear by frictional contact.
SEE OR SEARCH THIS CLASS, SUBCLASS:
26 for a friction drive in steering by driving, 114+ for
fluid control of friction gearing, and 165+ for friction
gearing in an eccentrically driven transmission.
Subclass:
184
Plural outputs (e.g., differential):
This subclass is indented under subclass 183. Subject matter
wherein plural load devices* are driven by the planetary
transmission using said planet pinion*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
332 and see the search notes therein for related subject
matter.
Subclass:
185
Variable speed ratio (without slippage):
This subclass is indented under subclass 183. Subject matter
wherein means is provided to change the speed ratio*.
(1) Note. A patent is not considered appropriate for this
or indented subclasses if slippage between contacting
surfaces is the only way the speed ratio is changed.
Subclass:
186
Condition responsive ratio change:
This subclass is indented under subclass 185. Subject matter
wherein said ratio changing means is condition responsive*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
254 and see the search notes therein for related subject
matter.
Subclass:
187
Releasably braked element:
This subclass is indented under subclass 185. Subject matter
wherein said ratio changing means comprises a selectively
actuatable brake* for an element of a planetary
transmission.
Subclass:
188
Plural elements releasably braked:
This subclass is indented under subclass 187. Subject matter
which further include means to apply a second brake* to
another element of said planetary transmission.
Subclass:
189
Planet pinion is a ball:
This subclass is indented under subclass 185. Subject matter
wherein said planet pinion* is a spherical element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
196 for related subject matter.
Subclass:
190
Planet pinion rotatable about axis at angle to axis of input
or output gear:
This subclass is indented under subclass 185. Subject matter
wherein said planet pinion* is mounted for rotation about an
axis which is angularly related with respect to the
rotational axis of a gear in driving relationship with said
planet pinion*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
9 197, 230+, 251+, 273+, 306+, and 336, for related subject
matter.
Subclass:
191
Planet pinion is member having axis fixed or adjustable to
position perpendicular to axis of input or output gear:
This subclass is indented under subclass 190. Subject matter
wherein said angular relationship is a right angle and
wherein said planet pinion* is either fixed or adjustable to
said right angle position. [figure]
Subclass:
192
Pinion engages facing concave surfaces (e.g., mounted in
torus.):
This subclass is indented under subclass 191. Subject matter
wherein a pair of gears in driving relationship with said
planet pinion* include concave surfaces facing each other to
define a cavity for said planet pinion*. [figure]
Subclass:
193
Conical or frusto-conical planet pinion:
This subclass is indented under subclass 190. Subject matter
wherein said planet pinion* is in the shape of a cone or the
frustum of a cone. [figure]
Subclass:
194
Torque responsive means to increase contact pressure:
This subclass is indented under subclass 193. Subject matter
including means for sensing resistance to movement or change
in resistance to movement of a load device* or of a member in
a drive train*; and, in response to such sensed resistance or
change of resistance to movement, said means acts to increase
pressure of frictional contact between said planet pinion*
and a mating gear.
SEE OR SEARCH THIS CLASS, SUBCLASS:
195 for related subject matter.
Subclass:
195
Torque responsive means to increase contact pressure:
This subclass is indented under subclass 183. Subject matter
including means for sensing resistance to movement or change
in resistance to movement of a load device* or of a member in
a drive train*; and, in response to such sensed resistance or
change of resistance to movement, said means acts to increase
pressure of frictional contact between said planet pinion*
and a mating gear.
SEE OR SEARCH THIS CLASS, SUBCLASS:
194 for related subject matter.
Subclass:
196
Planet pinion is ball:
This subclass is indented under subclass 183. Subject matter
wherein said planet pinion* is a spherical element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
189 for a spherical planet pinion in a variable ratio
transmission.
Subclass:
197
Planet pinion rotatable about axis at angle to axis of input
or output gear:
This subclass is indented under subclass 183. Subject matter
wherein said planet pinion* is mounted for rotation about an
axis which is angularly related with respect to the
rotational axis of a gear in driving relationship with said
planet pinion*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
9 190+, 230+, 251+, 273+, 306+, and 336, for related subject
matter.
Subclass:
198
VARIABLE SPEED OR DIRECTION TRANSMISSION COMBINED WITH
DIFFERENTIAL:
This subclass is indented under the class definition.
Subject matter wherein a differential transmission* is
associated with another transmission capable of speed ratio*
change or capable of reversing the direction of relative
rotation between input and output shafts of said other
transmission.
SEE OR SEARCH THIS CLASS, SUBCLASS:
220 for differential planetary gearing.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, for variable speed or
direction transmissions.
474, Endless Belt Power Transmission Systems or Components,
for non-planetary belt or chain gearing.
Subclass:
199
Condition responsive:
This subclass is indented under subclass 198. Subject matter
wherein said speed ratio* change or said direction reversal
is condition responsive*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
254 and see the search notes therein for related subject
matter.
Subclass:
200
Differential is beneath prime mover or transmission:
This subclass is indented under subclass 198. Subject matter
wherein significance is attributed to locating said
differential transmission* at a position below a power
source* or under said other transmission.
Subclass:
201
Differential is between prime mover and transmission in the
path of power flow:
This subclass is indented under subclass 198. Subject matter
wherein said differential transmission* is positioned
relative to said other transmission and a power source* so
that power flows in a direction from said power source*
through said differential transmission* to said other
transmission.
SEE OR SEARCH THIS CLASS, SUBCLASS:
18 for this arrangement in a steering by driving
combination.
Subclass:
202
With universal joint in drive train:
This subclass is indented under subclass 198. Subject matter
including connecting means between two shaft elements in a
drive train*, said connecting means permitting rotation to be
transmitted from one element to the other when the axes of
said elements are misaligned or angularly related.
SEE OR SEARCH THIS CLASS, SUBCLASS:
464 Rotary Shafts Gudgeons, Housings, and Flexible Couplings
for Rotary, for universal joints in general.
Subclass:
203
Plural selectively driveable gears surround differential:
This subclass is indented under subclass 198. Subject matter
wherein input power to said differential transmission* is
selectively supplied by either of two gears which encircle
the external periphery of said differential transmission.
Subclass:
204
Variable speed or direction transmission is planetary:
This subclass is indented under subclass 198. Subject matter
wherein said other transmission is a planetary gear
transmission as defined in the class definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
71 for this combination together with a fluid drive.
Subclass:
205
Plural planetary units combined with differential:
This subclass is indented under subclass 204. Subject matter
and further including a second planetary gear transmission.
SEE OR SEARCH THIS CLASS, SUBCLASS:
71 for this combination together with a fluid drive.
Subclass:
206
Transmission output shaft parallel to differential output
shafts:
This subclass is indented under subclass 198. Subject matter
wherein the axis of the output shaft of said other
transmission extends in a direction parallel to the axis of
output shafts of said differential transmission*.
Subclass:
207
NONPLANETARY VARIABLE SPEED OR DIRECTION TRANSMISSION
COMBINED WITH PLANETARY TRANSMISSION:
This subclass is indented under the class definition.
Subject matter which includes a power transmitting mechanism,
other than a planetary gear transmission, having an input and
an output shaft, and means capable of speed ratio* change
between said shafts or capable of changing the direction of
relative rotation of said shafts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
52 and 66, for this combination with a fluid drive.
80 for a transmission of the type found therein combined
with a change speed non-planetary transmission.
198 for a change speed or direction transmission combined
with a differential*.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, for nonplanetary variable
speed gearing.
Subclass:
208
Condition responsive:
This subclass is indented under subclass 207. Subject matter
and further including a control which is condition
responsive*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
254 and see the search notes therein for related subject
matter.
Subclass:
209
Interrelated control of in series transmissions:
This subclass is indented under subclass 207. Subject matter
wherein a planetary gear transmission has first control
means, and said power transmitting mechanism other than the
planetary gear transmission has second control means; and
wherein operation of one of said first or second control
means affects the operation of the other of said control
means.
Subclass:
210
Nonplanetary transmission is belt or chain gearing:
This subclass is indented under subclass 207. Subject matter
wherein said power transmitting mechanism includes a flexible
endless member in a drive train*.
SEE OR SEARCH CLASS:
474, Endless Belt Power Transmission Systems or Components,
for nonplanetary belt or chain gearing.
Subclass:
211
Plural power paths to planetary gearing:
This subclass is indented under subclass 210. Subject matter
wherein said power transmitting mechanism has at least two
power output members leading therefrom, said power output
members being connected to different elements of a planetary
gear transmission to provide rotary input to either or both
of said elements of said planetary transmission.
SEE OR SEARCH THIS CLASS, SUBCLASS:
329 and see the search notes therein for related subject
matter.
Subclass:
212
Nonplanetary transmission is chain gearing:
This subclass is indented under subclass 211. Subject matter
wherein said power transmitting mechanism comprises an
endless member formed of rigid links.
Subclass:
213
Nonplanetary transmission is chain gearing:
This subclass is indented under subclass 210. Subject matter
wherein said power transmitting mechanism comprises an
endless member formed of rigid links.
Subclass:
214
Nonplanetary transmission is friction gearing:
This subclass is indented under subclass 207. Subject matter
wherein said power transmitting mechanism includes a gear
which receives or transmits rotary motion to a mating gear by
frictional contact.
SEE OR SEARCH CLASS:
476, Friction Gear Transmission Systems or Components, for
nonplanetary friction gearing, per se.
Subclass:
215
Plural power paths to planetary gearing:
This subclass is indented under subclass 214. Subject matter
wherein said power transmitting mechanism has at least two
power output members leading therefrom, said power output
members being connected to different elements of a planetary
gear transmission to provide rotary input to either or both
of said elements of said planetary gear transmission.
SEE OR SEARCH THIS CLASS, SUBCLASS:
329 and see the search notes therein for related subject
matter.
Subclass:
216
Friction gear engages facing concave surfaces:
This subclass is indented under subclass 215. Subject matter
wherein said power transmitting mechanism includes a gear
between two members having facing concave surfaces. [figure]
[caption]input; output; control means; regime change inhibit
Subclass:
217
Nonplanetary transmission is disc and wheel:
This subclass is indented under subclass 215. Subject matter
wherein one of said gears is in the form of a plate having a
friction drive face, and the other said gear is generally
cylindrical and has a friction drive surface on the rim
thereof in contact with said face; said cylindrical gear
being mounted for rotation about an axis generally
perpendicular to a rotational axis of said plate, and the
point of contact of said face with said rim being adjustable
in a radial direction with respect to the axis of the plate
to vary the speed ratio*.
Subclass:
218
Plural power paths to planetary gearing:
This subclass is indented under subclass 207. Subject matter
wherein said power transmitting mechanism has at least two
power output members leading therefrom, said power output
members being connected to different elements of a planetary
gear transmission to provide rotary input to either or both
of said elements of said planetary gear transmission.
SEE OR SEARCH THIS CLASS, SUBCLASS:
80 for a transmission of the kind found therein combined
with change speed nonplanetary transmission.
329 and see the search notes therein for related subject
matter.
Subclass:
219
Plural planetary units:
This subclass is indented under subclass 207. Subject matter
which includes at least two planetary gear transmissions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
52 and 66, for related art.
80 for a transmission of the type found therein combined
with a change speed nonplanetary transmission.
Subclass:
220
DIFFERENTIAL PLANETARY GEARING:
This subclass is indented under the class definition.
Subject matter which includes a differential transmission* in
a drive train*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
6 15, 18+, 71, 84+, 150, 160, 174, 184, and 198+ for other
differential planetary gearing or combinations therewith.
Subclass:
221
Differential or nondifferential planetary combined with
differential (e.g., two differentials):
This subclass is indented under subclass 220. Subject matter
which includes at least two differential transmissions* or
which includes a differential transmission* and another
planetary gear transmission.
SEE OR SEARCH THIS CLASS, SUBCLASS:
198 for a variable speed or direction transmission combined
with a differential.
SEE OR SEARCH CLASS:
180, Motor Vehicles, 233 for four wheel drive vehicles which
may include plural differentials.
Subclass:
222
With universal joint in drive train:
This subclass is indented under subclass 220. Subject matter
including connecting means between two shaft elements in said
drive train*, said connecting means permitting rotation to be
transmitted from one element to the other when the axes of
said elements are misaligned or angularly related.
SEE OR SEARCH THIS CLASS, SUBCLASS:
202 and 346+, for related subject matter.
Subclass:
223
Including means to selectively apply rotational power to only
one output:
This subclass is indented under subclass 220. Subject matter
including means to disconnect one output from said
differential transmission* while driving the other output, or
including means to apply a brake* to one of said outputs
while driving the other output. [figure]
Subclass:
224
By braking other output:
This subclass is indented under subclass 223. Subject matter
including means to apply a brake* to one of said outputs
while driving the other output.
Subclass:
225
With additional gearset between differential output and
load:
This subclass is indented under subclass 220. Subject matter
including nonplanetary gearing between an output of said
differential transmission and a load device*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
343 and see the search notes therein for related subject
matter.
Subclass:
226
Planet pinion is worm gear:
This subclass is indented under subclass 220. Subject matter
wherein a planet pinion* in said differential transmission*
is a worm gear*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
7 304 and 333, for related subject matter.
Subclass:
227
And spur gear on pinion:
This subclass is indented under subclass 226. Subject matter
wherein said planet pinion* also includes a spur gear*.
[figure]
Subclass:
228
Worm drive on input shaft:
This subclass is indented under subclass 220. Subject matter
wherein input power to said differential transmission* is
supplied by a worm gear*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
7 for related subject matter.
Subclass:
229
And roller bearing supporting worm from casing:
This subclass is indented under subclass 228. Subject matter
wherein said worm gear* is supported for rotation by ball
bearings or cylindrical bearings positioned around the axis
of said worm gear. [figure]
Subclass:
230
Bevel gear differential:
This subclass is indented under subclass 220. Subject matter
wherein said differential gearing* is formed by bevel
gears*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
9 190+, 197, 273+, 306+, and 336, for related subject
matter.
Subclass:
231
With means to limit overspeed of one output (e.g., lock-up
clutch):
This subclass is indented under subclass 230. Subject matter
including means to restrict the amount the rotational
velocity of one of the output members of said differential
transmission* may exceed the rotational velocity of the other
of said output members.
SEE OR SEARCH THIS CLASS, SUBCLASS:
86 for fluid actuated clutches* in differentials*
150 for electric or magnetic controlled differentials*
249 for related subject matter.
Subclass:
232
Centrifugal actuator:
This subclass is indented under subclass 231. Subject matter
wherein said means for restricting said rotational velocity
includes an element movable outwardly in response to inertial
force caused by rotation of a part in said differential
transmission*.
Subclass:
233
Lock-up clutch between pinion and pinion carrier:
This subclass is indented under subclass 231. Subject matter
wherein said means includes an element for directly locking a
planet pinion* to a cage carrying said pinion or to a
supporting pin for said pinion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
91 108, 109+, and 305, for related subject matter.
Subclass:
234
By axial movement of output gear:
This subclass is indented under subclass 231. Subject matter
wherein said restricting means is operated by movement of one
said output members in a direction parallel to its axis of
rotation.
Subclass:
235
With spring bias on gear or clutch:
This subclass is indented under subclass 234. Subject matter
including resilient means providing a force bias on said
output gear, or on a clutch* therefor, in a direction
parallel to its rotational axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
240 for related subject matter.
Subclass:
236
Particular gear shape or tooth interaction limits overspeed:
This subclass is indented under subclass 231. Subject matter
wherein significance is attributed to a special shape of a
gear tooth or to a special interaction between gear teeth to
provide said restriction. [figure] [caption]particular angle
of gear teeth causes lock-up
Subclass:
237
Manual actuator:
This subclass is indented under subclass 231. Subject matter
wherein said restricting means includes a member selectively
actuatable by human force.
SEE OR SEARCH THIS CLASS, SUBCLASS:
250 for related subject matter.
Subclass:
238
Friction clutch:
This subclass is indented under subclass 237. Subject matter
wherein said restricting means comprises a clutch* in which
pressure and resultant friction between faces of two
relatively movable parts causes the parts to have common
movement.
Subclass:
239
Plate clutch:
This subclass is indented under subclass 238. Subject matter
in which said relatively movable parts are in the form of
discs.
Subclass:
240
Spring bias on overspeed limiting means:
This subclass is indented under subclass 231. Subject matter
wherein said restricting means include a resilient member
urging a part thereof in one direction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
235 for related subject matter.
Subclass:
241
Helically coiled spring:
This subclass is indented under subclass 240. Subject matter
wherein said resilient member is a wire coiled in the shape
of a helix. [figure]
Subclass:
242
Separate planet pinions or separate tooth set on same pinion
for each output:
This subclass is indented under subclass 230. Subject matter
wherein a separate planet pinion* is provided in said
differential gearing* for each output thereof; or wherein a
planet pinion has first and second tooth sets thereon, the
first of said tooth sets engaging one of said outputs, and
the second of said tooth sets engaging the other of said
outputs. [figure]
Subclass:
243
Output gear rotatable relative to axial support shaft:
This subclass is indented under subclass 230. Subject matter
wherein one of the output gears of said differential
transmission* is rotatable relative to a shaft upon which the
gear is mounted.
Subclass:
244
Support shaft coupled to other output gear:
This subclass is indented under subclass 243. Subject matter
wherein said shaft is connected to another of the output
gears for joint rotation therewith.
Subclass:
245
With roller bearing between output gear and shaft:
This subclass is indented under subclass 243. Subject matter
wherein said output gear is supported for rotation on said
shaft by ball-bearings or cylindrical bearings positioned
around the axis of said shaft.
Subclass:
246
With roller bearing between gear and its support:
This subclass is indented under subclass 230. Subject matter
wherein at least one of said bevel gears* is supported for
rotation by ball bearings or by cylindrical bearings
surrounding the rotational axis of the bevel gear.
SEE OR SEARCH THIS CLASS, SUBCLASS:
253 and 348, for related subject matter.
Subclass:
247
Ball bearing:
This subclass is indented under subclass 246. Subject matter
wherein said bearings are in the shape of a round ball.
Subclass:
248
Spur gear differential:
This subclass is indented under subclass 220. Subject matter
wherein said differential gearing* is formed of spur gear*.
[figure]
Subclass:
249
With means to limit overspeed of one output:
This subclass is indented under subclass 248. Subject matter
including means to restrict the amount the rotational
velocity of one of the output members of said differential
transmission* may exceed the rotational velocity of the other
of said output members.
SEE OR SEARCH THIS CLASS, SUBCLASS:
84 for fluid actuated clutches* in differentials*
150 for electric or magnetic controlled differentials*
231 for related subjected matter.
Subclass:
250
Manual actuator:
This subclass is indented under subclass 249. Subject matter
wherein said restricting means includes a member selectively
actuatable by human force.
SEE OR SEARCH THIS CLASS, SUBCLASS:
237 for related subject matter.
Subclass:
251
Pinion axis at angle intersecting axis of output:
This subclass is indented under subclass 248. Subject matter
wherein the axis of rotation* of a planet pinion* in said
differential gearing* extends at an angle with respect to the
rotational axis of an output member of said differential
gearing. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
190 197, 273+, 306+, and 336, for related subject matter.
Subclass:
252
Intermeshing planet pinions:
This subclass is indented under subclass 248. Subject matter
wherein said differential gearing* includes a plurality of
planet pinions* having gear teeth which intermesh with each
other. [figure]
Subclass:
253
With roller bearing between gear and its support:
This subclass is indented under subclass 248. wherein at
least one of said spur gears* is supported for rotation by
ball bearings or by cylindrical bearings surrounding the
rotational axis of said spur gear.
SEE OR SEARCH THIS CLASS, SUBCLASS:
246 and 348, for related subject matter.
Subclass:
254
CONDITION RESPONSIVE CONTROL:
This subclass is indented under the class definition.
Subject matter together with a condition responsive*
transmission regulating means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
2 19, 42, 43, 47, 51, 60, 76, 94, 117, 118, 125, 153, 186,
199, 208, and 232, for various transmission combinations
including condition responsive* control.
SEE OR SEARCH CLASS:
477, Interrelated Power Delivery Controls, Including Engine
Control, for condition responsive transmission control also
including motor control.
Subclass:
255
Eccentrically weighted planet:
This subclass is indented under subclass 254. Subject matter
wherein a planet pinion* includes an additional mass carried
thereby at a location spaced from its axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
112 for a similar combination but using fluid as the
eccentric weight.
Subclass:
256
Downshift responsive to high speed limit:
This subclass is indented under subclass 254. Subject matter
wherein a planetary transmission is regulated such that the
attainment of an undesirable fast speed is prevented by
changing the speed ratio* to rotate an output member* at a
lower velocity. [figure] [caption]flyweight
Subclass:
257
Speed responsive control adjusted or opposed by torque:
This subclass is indented under subclass 254. Subject matter
wherein a planetary transmission is regulated in response to
the velocity of one of its parts but such regulation is
modified by the rotary effort exerted by a transmission
part.
Subclass:
258
Centrifugally controlled clutch or brake:
This subclass is indented under subclass 254. 7Subject
matter wherein a clutch* or brake* is utilized to change the
speed ratio* of a planetary transmission and the operation of
such clutch* or brake* is controlled by the velocity of a
transmission part as measured by the centrifugal force of a
mass rotating with said part.
Subclass:
259
One-way clutch or brake:
This subclass is indented under subclass 258. Subject matter
wherein the clutch* or brake* controlled is a one-way clutch*
or a one-way brake*.
Subclass:
260
Centrifugal brake control:
This subclass is indented under subclass 258. Subject matter
wherein the device controlled is a brake*.
Subclass:
261
Positive clutch:
This subclass is indented under subclass 258. Subject matter
wherein two parts of a controlled clutch* each include
teeth-like elements thereon that mesh when the clutch is
engaged so that torque is delivered positively, as opposed to
frictionally, from one part to the other.
Subclass:
262
Axially engaged friction clutch:
This subclass is indented under subclass 258. Subject matter
wherein a controlled clutch* has two parts with frictional
drive faces and the two parts of the controlled clutch* are
moved, one relative to the other, in the direction of the
transmission axis to engage or disengage their frictional
surfaces.
Subclass:
263
Overload release:
This subclass is indented under subclass 254. Subject matter
including means to sense when torque to an output member*
exceeds a predetermined value; and, in response to such
sensing, interrupt the flow of power through a drive train*
power path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
192 Clutches and Power-Stop Control, subclasses 56+, 129+ and
150 for related art.
464 Rotary Shafts, Gudgeons, Housings, and Flexible Couplings
for Rotary Shafts, subclasses 30+ for an overload release
coupling in a drive train.
Subclass:
264
Spring applied friction drive establishing means:
This subclass is indented under subclass 263. Subject matter
wherein a coupling, clutch* or brake* is utilized to
establish a speed ratio* in a planetary transmission, such
coupling, clutch* or brake* being of a non-positive, friction
type and being engaged by a spring and disengaged in response
to torque.
(1) Note. In disengaging the coupling, clutch* or brake* a
second coupling, clutch* or brake* may or may not be
engaged.
SEE OR SEARCH THIS CLASS, SUBCLASS:
140 for a spring applied and fluid released clutch* or
brake*
301 for a clutch* or brake* consisting of a helical spring.
Subclass:
265
Drive establishing means is friction brake:
This subclass is indented under subclass 264. Subject matter
wherein the speed ratio is established by a spring engaged
brake*.
Subclass:
266
Stepped, torque responsive ratio change:
This subclass is indented under subclass 254. Subject matter
wherein a plurality of distinct speed ratios* are effected by
the use of a plurality of clutches* or brakes* and the change
from one ratio to another is in response to the turning
effort of a part of a transmission. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
12 for a stepped ratio change in response to the change in
direction of an input member*.
Subclass:
267
With flywheel or centrifugal weight control:
This subclass is indented under subclass 254. Subject matter
wherein a planetary transmission is controlled in response to
(1) the affect thereon of the inertia of a separate mass
driven by a transmission part, or (2) the radially acting
force produced in response to the speed of a transmission
part by a separate mass driven by said part and spaced from
the rotary axis of such part.
SEE OR SEARCH THIS CLASS, SUBCLASS:
255 for eccentrically weighted planet pinions* and 258+ for
centrifugally controlled clutch* or brake*.
SEE OR SEARCH CLASS:
180, Motor Vehicles, subclass 165 for the use of a flywheel
in a power delivery system together with significant vehicle
structure.
Subclass:
268
With planet axis at angle to axis of mating gear (e.g., bevel
gears):
This subclass is indented under subclass 267. Subject matter
wherein a planet pinion* axis extends at an angle with
respect to the rotational axis of a gear that meshes with
said planet pinion.
Subclass:
269
WITH MEANS TO VARY DRIVE RATIO OR DISCONNECT DRIVE (E.G.,
BRAKE OR CLUTCH):
This subclass is indented under the class definition.
Subject matter which includes a ratio-changing device to
provide at least two different speed ratios*; or wherein
means are provided to disconnect the flow of power to an
output member* while an input member* continues to rotate.
SEE OR SEARCH THIS CLASS, SUBCLASS:
91 for fluid-resistance type clutches* and brakes*.
116 for fluid control of clutches* and brakes*.
149 for electrical control of clutches* and brakes*.
Subclass:
270
Manual force provides reaction during drive:
This subclass is indented under subclass 269. Subject matter
wherein a reaction force in a planetary gear transmission is
provided by human force limiting or preventing rotation of an
element in the transmission while another element in the
transmission provides rotation to an output member*.
[figure]
Subclass:
271
Plural elements selectively braked:
This subclass is indented under subclass 269. Subject matter
wherein an assemblage which comprises a planetary gear
transmission or a plurality of planetary gear transmissions
has at least two elements thereof which are provided with a
brake*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
173 for a transmission including an eccentric type planetary
gear set having plural planetary elements braked.
Subclass:
272
With preselection:
This subclass is indented under subclass 271. Subject matter
including a first manual controller actuatable to select a
desired speed ratio* and a second manual controller effective
to engage the said desired speed ratio*.
SEE OR SEARCH CLASS:
477, Interrelated Power Delivery Controls, Including Engine
Control, wherein a second manual controller may be a motor
control, such as an accelerator pedal.
Subclass:
273
Axis of planet pinion at angle to axis of mating gear (e.g.,
bevel gears):
This subclass is indented under subclass 271. Subject matter
wherein the planetary gear transmission includes a planet
pinion* having a rotational axis extending at an angle with
respect to the rotational axis of an intermeshing gear.
SEE OR SEARCH THIS CLASS, SUBCLASS:
9 190+, 197, 230+, 251+, 306+, and 336, for related subject
matter.
Subclass:
274
And additional planetary gearset having axis of pinion
parallel to axis of mating gear:
This subclass is indented under subclass 273. Subject matter
which includes another planetary gear transmission which has
a planet pinion* with a rotational axis extending in a
direction parallel to a rotational axis of an intermeshing
gear.
Subclass:
275
Transmission includes three relatively rotatable sun gears:
This subclass is indented under subclass 271. Subject matter
wherein said assemblage includes at least three sun gears*
which are relatively rotatable. [figure] [figure]
Subclass:
276
With brake for sun, carrier and orbit:
This subclass is indented under subclass 275. Subject matter
wherein one of said elements provided with a brake* is one of
said sun gears*; and two other of said elements provided with
a brake are a planet carrier* and an orbit gear*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
54 for this combination with a fluid drive in one of plural
paths.
Subclass:
277
With brake for plural sun gears:
This subclass is indented under subclass 275. Subject matter
wherein at least two of said sun gears* are provided with a
brake*.
Subclass:
278
And brake for carrier:
This subclass is indented under subclass 277. Subject matter
which further includes a brake* for a planet carrier*.
[figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
56 for this combination with a fluid drive in one of plural
paths.
Subclass:
279
With brake for plural orbits:
This subclass is indented under subclass 275. Subject matter
wherein at least two orbit gears* are provided with a brake*.
[figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
58 for this combination with a fluid drive in one of plural
paths.
Subclass:
280
Brake for sun, carrier and orbit:
This subclass is indented under subclass 271. Subject matter
wherein said elements which are provided with a brake*, a sun
gear*, a planet carrier* and an orbit gear*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
54 for this combination with a fluid drive in one of plural
paths.
Subclass:
281
Including one-way clutch or brake:
This subclass is indented under subclass 280. Subject matter
wherein one-way clutch* or a one-way brake* is in a drive
train* including said assemblage.
Subclass:
282
Brake for sun and orbit:
This subclass is indented under subclass 271. Subject matter
wherein said elements which are provided with a brake* are a
sun gear* and an orbit gear*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
55 for this combination with a fluid drive in one of plural
paths.
Subclass:
283
Including one-way clutch or brake:
This subclass is indented under subclass 282. Subject matter
wherein a one-way clutch* or a one-way brake* is in a drive
train* including said assemblage.
Subclass:
284
Brake for sun and carrier:
This subclass is indented under subclass 271. Subject matter
wherein said elements which are provided with a brake* are a
sun gear* and a planet carrier*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
56 for this combination with a fluid drive in one of plural
paths.
Subclass:
285
Including one-way clutch or brake:
This subclass is indented under subclass 284. Subject matter
wherein a one-way clutch* or a one-way brake* is in a drive
including said assemblage.
Subclass:
286
Brake for orbit and carrier:
This subclass is indented under subclass 271. Subject matter
wherein said elements which are provided with a brake* are an
orbit gear* and a planet carrier*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
57 for this combination with a fluid drive in one of plural
paths.
Subclass:
287
Including one-way clutch or brake:
This subclass is indented under subclass 286. Subject matter
wherein a one-way clutch* or a one-way brake* is in a drive
train* including said assemblage.
Subclass:
288
Plural suns braked:
This subclass is indented under subclass 271. Subject matter
wherein said elements which are provided with a brake* are at
least two sun gears*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
47 for this combination with a fluid drive in one of plural
paths.
Subclass:
289
Including one-way clutch or brake:
This subclass is indented under subclass 288. Subject matter
wherein a one-way clutch* or a one-way brake* is in a drive
train* including said assemblage.
Subclass:
290
Plural orbits braked:
This subclass is indented under subclass 271. Subject matter
wherein said elements which are provided with a brake* are at
least two orbit gears*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
58 for this combination with a fluid drive in one of plural
paths.
Subclass:
291
Including one-way clutch or brake:
This subclass is indented under subclass 290. Subject matter
wherein a one-way clutch* or a one-way brake* is in a drive
train* including said assemblage.
Subclass:
292
Including one-way clutch or brake:
This subclass is indented under subclass 271. Subject matter
wherein a one-way clutch* or a one-way brake* is in a drive
train including said assemblage.
Subclass:
293
Speed responsive clutch or brake:
This subclass is indented under subclass 269. Subject matter
wherein a drive train* includes a clutch* having mechanism
for controlling the coupling of two parts in response to the
velocity of one of the parts; or which includes a brake*
which controls a moving part in response to its velocity.
(1) Note. Patents in this subclass are directed to a speed
responsive brake* or clutch* in a drive train in advance of,
or after a planetary gear transmission.
SEE OR SEARCH THIS CLASS, SUBCLASS:
254 and see the search notes therein for condition
responsive control of a planetary gear transmission.
SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 3.51 for a combination
of transmission control and clutch control; and 215+ for a
combination of transmission control and brake.
Subclass:
294
Ratio shift initiated by reverse rotation of input shaft:
This subclass is indented under subclass 269. Subject matter
wherein an input shaft is rotated in a first direction during
both of said ratios*; and wherein means are provided for
operating said ratio changing device by limited movement of
said input shaft in a direction opposite to said first
direction.
SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 217.1 for related
subject matter combined with a back-pedaling brake.
Subclass:
295
Plural outputs:
This subclass is indented under subclass 269. Subject matter
which includes means to drive at least two load devices*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
332 and see the search notes therein for related subject
matter.
Subclass:
296
Plural drive ratios other than unity:
This subclass is indented under subclass 269. Subject matter
wherein said different speed ratios are two overdrives*, or
two underdrives*, or an underdrive* and an overdrive*.
[figure] [caption]ring gear fixed to frame; output; input
SEE OR SEARCH THIS CLASS, SUBCLASS:
271 for plural drive ratios obtained by selectively braking
plural elements.
Subclass:
297
Including one-way clutch or brake:
This subclass is indented under subclass 296. Subject matter
wherein a one-way clutch* or a one-way brake* is included in
said ratio changing device.
Subclass:
298
Gear shiftable axially to disconnect or vary ratio:
This subclass is indented under subclass 269. Subject matter
wherein said ratio changing device or said disconnecting
means includes mechanism operable to move a gear of a
planetary gear transmission in a direction parallel to the
axis of rotation of the gear.
Subclass:
299
Orbit shiftable relative to sun and carrier:
This subclass is indented under subclass 298. Subject matter
wherein an orbit gear* is movable axially with respect to a
stationary sun gear* and planet carrier*. [figure]
Subclass:
300
Sun shiftable relative to orbit and carrier:
This subclass is indented under subclass 298. Subject matter
wherein a sun gear* is movable axially with respect to a
relatively stationary orbit gear* and planet carrier*.
Subclass:
301
Brake or clutch on surface of helically coiled member:
This subclass is indented under subclass 269. Subject matter
wherein a helically coiled resilient device has a frictional
surface which expands or contracts into engagement with two
relatively movable members to function as a clutch*, or which
expand or contracts into engagement with a moveable and
stationary member to function as a brake*.
SEE OR SEARCH CLASS:
188, Brakes, for, per se.
192, Clutches and Power-Stop Control, subclass 41 for this
type clutch.
Subclass:
302
Nonplanetary gearing combined with planetary:
This subclass is indented under subclass 269. Subject matter
wherein a part of a drive train* leading to or from a
planetary gear transmission includes nonplanetary gearing
associated therewith.
SEE OR SEARCH THIS CLASS, SUBCLASS:
343 and see the search notes therein for related subject
matter.
Subclass:
303
With synchronizing clutch or brake:
This subclass is indented under subclass 269. Subject matter
wherein a clutch* includes friction members to couple
relatively moving parts to gradually achieve common rotation
prior to positive coupling by intermeshing parts; or wherein
a brake* includes friction members to gradually couple a
rotating part to a stationary part prior to positive coupling
by intermeshing parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
67 and see the search notes therein for related subject
matter.
Subclass:
304
Planet pinion is worm gear:
This subclass is indented under subclass 269. Subject matter
including a planetary gear transmission in which a planet
pinion is a worm gear*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
7 226+, and 333, for related subject matter.
Subclass:
305
Including releasable clutch directly between planet pinion
and carrier:
This subclass is indented under subclass 269. Subject matter
including a clutch* acting between a planet pinion* and a
planet carrier*. [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
96 108, 109+, and 233, for related subject matter.
Subclass:
306
Brake for planetary transmission having axis of planet pinion
at angle to axis of mating gear (e.g., bevel gears):
This subclass is indented under subclass 269. Subject matter
wherein a drive train* includes a planetary gear transmission
which comprises a planet pinion* having a rotational axis
extending at an angle with respect to the rotational axis of
an intermeshing gear; and wherein one of said speed ratios*
is provided by applying a brake* to one element of said
planetary gear transmission.
SEE OR SEARCH THIS CLASS, SUBCLASS:
9 190+, 197, 230+, 251, 273+, and 336, for related subject
matter.
Subclass:
307
Including one-way clutch or brake:
This subclass is indented under subclass 306. Subject matter
wherein said drive train* is provided with a one-way clutch*
or a one-way brake*.
Subclass:
308
And lock-up clutch:
This subclass is indented under subclass 306. Subject matter
wherein of another said speed ratios is a unitary drive*
which is provided by engaging a clutch*.
Subclass:
309
Friction clutch:
This subclass is indented under subclass 308. Subject matter
wherein said clutch* is of a type in which pressure and
resultant friction between faces of two relatively movable
parts causes the parts to have common movement.
Subclass:
310
Plate clutch:
This subclass is indented under subclass 309. Subject matter
in which said relatively moveable parts are in the form of
discs.
Subclass:
311
Sun braked:
This subclass is indented under subclass 269. Subject matter
wherein a drive train* includes a planetary gear
transmission, and wherein one of said speed ratios* is
provided by applying a brake* to a sun gear* of said
planetary gear transmission.
Subclass:
312
Including one-way clutch or brake:
This subclass is indented under subclass 311. Subject matter
wherein said drive-train* is provided with one-way clutch* or
a one-way brake.
Subclass:
313
Intermeshing planet pinions on single carrier:
This subclass is indented under subclass 311. Subject matter
wherein said planetary gear transmission includes a planet
carrier* for a plurality of planet pinions*, said planet
pinions* having gear teeth which intermesh with each other.
[figure]
Subclass:
314
And lock-up clutch:
This subclass is indented under subclass 311. Subject matter
wherein another of said speed ratios* is a unitary drive*
which is provided by engaging a clutch*.
Subclass:
315
Friction clutch:
This subclass is indented under subclass 314. Subject matter
wherein said clutch* is of a type in which pressure and
resultant friction between faces of two relatively moveable
parts causes the parts to have common movement.
Subclass:
316
Plate clutch:
This subclass is indented under subclass 315. Subject matter
in which said relatively movable parts are in the form of
discs.
Subclass:
317
Orbit braked:
This subclass is indented under subclass 269. Subject matter
wherein a drive train* includes a planetary gear
transmission, and wherein one of said speed ratios* is
provided by applying a brake* to an orbit gear* of said
planetary gear transmission.
Subclass:
318
Including one-way clutch or brake:
This subclass is indented under subclass 317. Subject matter
wherein said drive-train* is provided with a one-way clutch*
or a one-way brake*.
Subclass:
319
Intermeshing planet pinion on single carrier:
This subclass is indented under subclass 317. Subject matter
wherein said planetary gear transmission includes a planet
carrier* for a plurality of planet pinions* said planet
pinions* having gear teeth which intermesh with each other.
Subclass:
320
And lock-up clutch:
This subclass is indented under subclass 317. Subject matter
wherein another of said speed ratios* is a unitary drive*
which is provided by engaging a clutch*.
Subclass:
321
Friction clutch:
This subclass is indented under subclass 320. Subject matter
wherein said clutch* is of a type in which pressure and
resultant friction between faces of two relatively moveable
parts causes the parts to have common movement.
Subclass:
322
Plate clutch:
This subclass is indented under subclass 321. Subject matter
in which said relatively movable parts are in the form of
discs.
Subclass:
323
Carrier braked:
Subject matter under 269 wherein a drive train* includes a
planetary gear transmission, and wherein one of said speed
ratios* is provided by applying a brake* to a planet carrier*
of said planetary gear transmission.
Subclass:
324
Including one-way clutch or brake:
This subclass is indented under subclass 323. Subject matter
wherein said drive train* is provided with a one-way clutch*
or a one-way brake*.
Subclass:
325
Intermeshing planet pinions on single carrier:
This subclass is indented under subclass 323. Subject matter
wherein said planetary gear transmission includes a planet
carrier* for a plurality of planet pinions*, said planet
pinion*, having gear teeth which intermesh with each other.
Subclass:
326
And lock-up clutch:
This subclass is indented under subclass 323. Subject matter
wherein another of said speed ratios is a unitary drive*
which is provided by engaging a clutch*.
Subclass:
327
Friction clutch:
This subclass is indented under subclass 326. Subject matter
wherein said clutch* is of a type in which pressure and
resultant friction between faces of two relatively moveable
parts cause the parts to have common movement.
Subclass:
328
Plate clutch:
This subclass is indented under subclass 327. Subject matter
in which said relatively moveable parts are in the form of
discs.
Subclass:
329
PLURAL POWER PATHS TO PLANETARY GEARING:
This subclass is indented under the class definition.
Subject matter wherein rotational force from a power source*
is split into at least two paths prior to reaching a
planetary gear transmission; one of said paths providing
rotational input power to a first element of the planetary
gear transmission, and the other of said paths providing
rotational input power to a second element of said planetary
gear transmission.
SEE OR SEARCH THIS CLASS, SUBCLASS:
1 18+, 35+, 47+, 72+, 171, 211+, 215+, and 218, for related
subject matter.
343 for similar art where there may be plural power paths
extending from the planetary transmission.
Subclass:
330
Plural planetary units:
This subclass is indented under subclass 329. Subject matter
which includes at least two planetary gear transmissions.
Subclass:
331
PLANETARY GEARING OR ELEMENT:
This subclass is indented under the class definition.
Subject matter including a planetary gear transmission or a
device particularly adapted to be used with said planetary
gear transmission.
Subclass:
332
Plural outputs:
This subclass is indented under subclass 331. Subject matter
including means to drive at least two load devices*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
6 15, 18+, 74, 174, 184, 220+, and 295, for related subject
matter.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, 11 and 665+ for other
plural output transmissions.
180, Motor Vehicles, 53.1 for power take-offs including
significant vehicle structure.
Subclass:
333
Planet pinion is worm gear:
This subclass is indented under subclass 331. Subject matter
wherein a planet pinion* of said planetary gear transmission
is a worm gear*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
7 226+ and 304, for related subject matter.
Subclass:
334
Floating support annulus in rolling contact with planet
pinion:
This subclass is indented under subclass 331. Subject matter
which includes a ring surrounding the rotational axis of a
planet carrier* and free to move with respect to said
carrier; said ring contacting a smooth surface on a plurality
of planet pinions* spaced about said planet carrier to aid in
supporting said planet pinions. [figure]
Subclass:
335
Toothed planet pinion has smooth bearing surface engaging
raceway on sun or orbit gear:
This subclass is indented under subclass 331. Subject matter
including a planet pinion* having gear teeth which intermesh
with gear teeth on a sun gear* or on an orbit gear*; said
planet pinion* being also provided with a smooth circular
surface for engagement with a mating smooth circular surface
on said sun gear* or orbit gear* to guide said planet pinion*
in its travel path about said sun gear* or orbit gear*.
[figure]
Subclass:
336
Axis of planet pinion at angle intersecting rotational axis
of mating gear (e.g., bevel gears):
This subclass is indented under subclass 331. Subject matter
wherein said planetary gear transmission includes a planet
pinion* having a rotational axis which extends at an angle of
with respect to the rotational axis of a gear which meshes
with said planet pinion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
9 190+, 197, 230+, 251, 273+, and 306+, for related subject
matter.
Subclass:
337
Plural planet carriers in series move at different speeds:
This subclass is indented under subclass 331. Subject matter
including a plurality of planet carriers*, the output power
of one of said planet carriers providing input power to the
other of said planet carriers; and wherein the rotational
velocity of one of said planet carriers is different than the
other. [figure]
Subclass:
338
Coaxial teeth around planet pinion engage axially spaced
relatively rotatable gears:
This subclass is indented under subclass 331. Subject matter
wherein a planet pinion* has an elongated set of gear teeth
or plural axially spaced sets of gear teeth; said teeth of
said planet pinion meshing with at least two gears rotatable
with respect to each other and spaced from each other in a
direction parallel to the rotational axis of the gears.
[figure] [figure]
Subclass:
339
Engage plural relatively rotatable sun gears:
This subclass is indented under subclass 338. Subject matter
wherein said two gears are sun gears*. [figure]
Subclass:
340
And orbit gear:
This subclass is indented under subclass 339. Subject matter
which also includes an orbit gear* meshing with said planet
pinion*. [figure]
Subclass:
341
Engage plural relatively rotatable orbit gears:
This subclass is indented under subclass 338. Subject matter
wherein said two gears are orbit gears*.
Subclass:
342
And sun gear:
This subclass is indented under subclass 341. Subject matter
which also includes a sun gear* meshing with said planet
pinion*.
Subclass:
343
Nonplanetary gearing combined with planetary:
This subclass is indented under subclass 331. Subject matter
wherein a part of a drive train* leading to or from said
planetary gear transmission includes non-planetary gearing
associated therewith.
SEE OR SEARCH THIS CLASS, SUBCLASS:
52 66, 198+, 207+, 225, and 302, for related subject matter.
329 for this combination where there is provided two power
paths to the planetary transmission.
Subclass:
344
Particular gear tooth feature:
This subclass is indented under subclass 331. Subject matter
wherein significance is attributed to the shape of a gear
tooth, or to the material from which a gear tooth is formed.
[figure] [caption]oblique teeth
SEE OR SEARCH THIS CLASS, SUBCLASS:
180 for related subject matter.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, 457 for related subject
matter.
Subclass:
345
Nonmetallic or resilient:
This subclass is indented under subclass 344. Subject matter
wherein said gear tooth is formed of a flexible material or
of a material other than metal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
180 for related subject matter.
Subclass:
346
Floating or flexible coupling or support:
This subclass is indented under subclass 331. Subject matter
wherein one of the gears in said planetary gear transmission
is moveable in an axial or radial, nonrotary, direction with
respect to another of the gears to accommodate proper
alignment of the gears; or which include connecting means
between two shaft elements in a drive train* which permits a
limited amount of relative movement between said shaft
elements or permits rotation of said shaft elements when they
are misaligned or angularly related; or which provides a
flexible support for said planetary gear transmission; or
which provides a resilient connection between a gear and its
supporting or driving member. [figure] [caption] floating
planet
SEE OR SEARCH THIS CLASS, SUBCLASS:
202 and 222, for related subject matter.
SEE OR SEARCH CLASS:
464, Rotary Shafts Gudgeons Housing, and Flexible Couplings
for Rotary Shafts etc., for flexible couplings, per se.
Subclass:
347
Resilient member:
This subclass is indented under subclass 346. Subject matter
which provides a resilient connection between a gear and its
supporting or driving member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
92 for planetary reaction element having a fluid damper.
Subclass:
348
Planet pinion supported by roller bearings:
This subclass is indented under subclass 331. Subject matter
wherein a planet pinion* is supported for rotation by ball
bearings or by cylindrical bearings surrounding the axis of
the planet pinion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
246 and 253, for related subject matter.
Subclass:
349
With manual input:
This subclass is indented under subclass 331. Subject matter
wherein a power source* for driving said planetary gear
transmission is human force.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 for related subject matter.
CROSS-REFERENCE ART COLLECTIONS
Subclass:
900
BRAKE FOR INPUT OR OUTPUT SHAFT:
This subclass is indented under the class definition. A
collection of patents relating to structure for applying a
brake* to an input member* or to an output member*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
18 and 224, for output shaft brakes* used in steering by
driving combinations.
68 and 175, for brakes* in combination with the drives of
those subclasses.
113 for fluid brakes* that may act on an input member*, or
output member.
SEE OR SEARCH CLASS:
188, Brakes, for brakes in general.
192, Clutches and Power-Stop Control, 215 for combined
transmission control and brake.
477, Interrelated Power Delivery Controls, Including Engine
Control, for interrelated control between an engine and a
transmission, clutch, or brake.
Subclass:
901
PARTICULAR MATERIAL:
This subclass is indented under the class definition. A
collection of patents wherein significance is attributed to a
special kind of material used in a planetary gear
transmission.
SEE OR SEARCH THIS CLASS, SUBCLASS:
85 180, and 344+, for related subject matter.
Subclass:
902
Nonmetallic:
This subclass is indented under subclass 901. A collection
of patents wherein the material is a material other than
metal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
85 180 and 344+, for related subject matter.
Subclass:
903
STACKED PLANETARY GEARING:
This subclass is indented under the class definition. A
collection of patents relating to structure wherein first and
second sun gears* are arranged so that the second sun gear is
located radially outwardly from the first sun gear; and both
sun gears are in a common plane bisecting the rotational axis
of the sun gears. [figure]
Subclass:
904
PARTICULAR MATHEMATICAL EQUATION:
This subclass is indented under the class definition. A
collection of patents wherein significance is attributed to
using a mathematical equation to compute a structural or
operational feature of planetary gear transmission.
Information Products Division -- Contacts
Questions regarding this report should be directed to:
U.S. Patent and Trademark Office
Information Products Division
PK3- Suite 441
Washington, DC 20231
tel: (703) 306-2600
FAX: (703) 306-2737
email: oeip@uspto.gov
Last Modified: 6 October 2000