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.
SECTION II - 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.
Metal Working,
subclasses 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.)
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.
Motor Vehicles, for combinations of significant vehicle structure which
may include planetary gearing, especially
subclasses 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.
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*.
Data Processing: Vehicles, Navigation, and Relative
Location,
subclasses 51+ for a transmission control of that type.
SECTION IV - 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.
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*.
This subclass is indented under subclass 1. Subject matter wherein a drive train* includes a
plurality of planet pinions* which intermesh with each
other.
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*.
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.
output driven in same direction at variable speeds; input drivenin opposite directions
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.
one-way brake; motorpump unit; one-way clutch; pump-motoracts as input (underdrive) to start I.C. engine then I.C. enginedrives motor-pump; I.C. engine; one-way clutch
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.
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.
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.
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.
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*.
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.
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*.
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.
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.
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.
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*.
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.
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.
Interrelated Power Delivery Controls, Including
Engine Control, for fluid drive or control of planetary gearing in
combination with prime mover control.
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*.
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.
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.
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.
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.*
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*.
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.
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.
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.
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.
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.
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.
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.
under high load condition stator rotated in reverse direction
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*.
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.
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+.
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.
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.
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.
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.
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.
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.
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*.
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*.
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*.
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*.
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.
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*.
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.
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*.
speed ratio governor; engine; power shift gear transmission;hydraulic torque converter
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.
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.
Clutches and Power-Stop Control,
subclasses 3.21+ for the combination of impeller-turbine type fluid
drive and clutch in the absence of a gear transmission.
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.
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.
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.
This subclass is indented under subclass 69. Subject matter wherein the fluid torque transmitting means
is regulated by controlling the pressure within said means.
powershift transmission control valve; powershift transmissioncontrol elements; torque converter
This subclass is indented under subclass 59. Subject matter wherein a power path extends between the
device of said subclass and a differential transmission*.
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.
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.
This subclass is indented under subclass 72. Subject matter wherein more than two fluid pressurizing
or pressure converting means are utilized for transferring torque
in the drive train*.
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.
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.
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.
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.
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.
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.
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*.
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.
Viscus Drag between 76 & 86 engages one-way clutch
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*.
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.
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.
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.
This subclass is indented under subclass 91. Subject matter wherein a liquid or gas medium resists movement
of an otherwise stationary planetary gear member.
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.
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.
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.
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*.
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.
centrifugal weight 37 closes valve 35 of clutch; fluid brake26, 27 stops this shaft; output; input
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.
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.
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*.
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.
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.
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.
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*.
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.
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.
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.
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.
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.
Clutches and Power-Stop Control,
subclasses 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*.
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.
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.
manual valve; prevents manual downshift at high speedsto direct drive clutch 60; pump pressure; to over drive brake 40;governor; governor inhibitor valve
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.
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.
This subclass is indented under subclass 116. Subject matter wherein force exerted to rotate a transmission
part affects control of the clutch* or brake*.
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.
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*.
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.
Interrelated Power Delivery Controls, Including
Engine Control, for pressure regulation which may be controlled
by actuation of a vehicle accelerator pedal.
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*.
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.
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.
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.
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.
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.
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.
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*.
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.
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.
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*.
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.
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.
Electricity, Motive Power Systems,
subclasses 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.
This subclass is indented under subclass 149. Subject matter wherein the electric or magnetic drive or
control is associated with a differential transmission*.
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.
Electricity: Motive Power Systems,
subclass 8 for similar systems where the generated electricity
is not wholly utilized in the motor-generator systems.
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.
This subclass is indented under subclass 149. Subject matter herein the electric or magnetic drive or
control is regulated by condition responsive* means.
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*.
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.
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.
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*.
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.
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.
This subclass is indented under the class definition. Subject matter and further including means to alter the
temperature of an element thereof during operation.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
This subclass is indented under subclass 183. Subject matter wherein plural load devices* are driven
by the planetary transmission using said planet pinion*.
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.
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.
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.
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*.
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.
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*.
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.
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.
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*.
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.
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.
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.
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.
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.
This subclass is indented under subclass 198. Subject matter wherein said other transmission is a planetary
gear transmission as defined in the class definition.
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*.
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.
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.
This subclass is indented under subclass 207. Subject matter wherein said power transmitting mechanism
includes a flexible endless member in a drive train*.
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.
This subclass is indented under subclass 211. Subject matter wherein said power transmitting mechanism
comprises an endless member formed of rigid links.
This subclass is indented under subclass 210. Subject matter wherein said power transmitting mechanism
comprises an endless member formed of rigid links.
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.
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.
This subclass is indented under subclass 215. Subject matter wherein said power transmitting mechanism
includes a gear between two members having facing concave surfaces.
input; output; control means; regime change inhibit
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*.
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.
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.
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.
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.
This subclass is indented under subclass 220. Subject matter including nonplanetary gearing between an
output of said differential transmission and a load device*.
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.
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.
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*.
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.
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.
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.
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.
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.
This subclass is indented under subclass 231. Subject matter wherein said restricting means include a
resilient member urging a part thereof in one direction.
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.
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.
This subclass is indented under subclass 243. Subject matter wherein said shaft is connected to another
of the output gears for joint rotation therewith.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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*.
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*.
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*.
Interrelated Power Delivery Controls, Including
Engine Control, wherein a second manual controller may be a motor
control, such as an accelerator pedal.
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.
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.
This subclass is indented under subclass 271. Subject matter wherein said assemblage includes at least
three sun gears* which are relatively rotatable.
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*.
![[Search a list of Patent Appplications for class 475]](../as.gif)
CLASS 475,![[List of Patents for class 475 subclass 1]](../ps.gif)
1
