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Planetary gear transmission systems or components

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
475269000 WITH MEANS TO VARY DRIVE RATIO OR DISCONNECT DRIVE (E.G., BRAKE OR CLUTCH) 640
475001000 INPUT FROM INDEPENDENT POWER SOURCES 297
475331000 PLANETARY GEARING OR ELEMENT 216
475220000 DIFFERENTIAL PLANETARY GEARING 201
475031000 FLUID DRIVE OR CONTROL OF PLANETARY GEARING 188
475149000 ELECTRIC OR MAGNETIC DRIVE OR CONTROL 176
475159000 WITH LUBRICATON 106
475207000 NONPLANETARY VARIABLE SPEED OR DIRECTION TRANSMISSION COMBINED WITH PLANETARY TRANSMISSION 101
475162000 PLANET PERIPHERY SURROUNDS AXIS OF INTERACTING GEAR (E.G., ECCENTRICALLY DRIVEN TRANSMISSON) 83
475198000 VARIABLE SPEED OR DIRECTION TRANSMISSION COMBINED WITH DIFFERENTIAL 45
475183000 PLANET PINION IS FRICTION GEAR 37
475254000 CONDITION RESPONSIVE CONTROL 15
475012000 REVERSAL OF DIRECTION OF POWER FLOW CHANGES POWER TRANSMISSION TO ALTERNATE PATH 10
475182000 PLANET PINION ENGAGES FLEXIBLE BELT OR CHAIN 9
475329000 PLURAL POWER PATHS TO PLANETARY GEARING 8
475161000 WITH TRANSMISSION COOLING OR HEATING MEANS 8
475011000 ROTARY PLANETATING OUTPUT 7
475018000 STEERING BY DRIVING 3
20100113203STEERING TRANSMISSION FOR TRACKED VEHICLES - An infinitely variable hydromechanical crossdrive steering transmission having a multiple of forward and reverse ratio ranges and a separately selectable low ratio range in both forward and reverse. The forward and reverse ratio ranges are enabled to shift between ratio ranges in a synchronous manner in both speed and torque, thus smoothly propelling the vehicle from rest through the multiple transmission ranges to maximum speed in a stepless manner.05-06-2010
20100184550DRIVE CONFIGURATION FOR SKID STEERED VEHICLES - A drive configuration for a skid steered vehicle comprises a pair of electric motors for propulsion of the vehicle, one each coupled to drive a respective track on a respective side of the vehicle, and one or more electric steer motors coupled through a differential gear mechanism to impose a speed difference between the tracks. An associated control system controls the current to each motor so that substantial contributions to the differential torque to turn the vehicle are made both by the steer motors and by the propulsion motors, in variable proportions preferably as a function of the vehicle speed.07-22-2010
20080300080Compound Planet Steer Differential - A drive configuration for a skid steered vehicle incorporates a controlled differential for use in exercising steering control of the vehicle, comprising a compound planetary gear set (12-04-2008
475014000 CYCLICAL OR INTERMITTENT DRIVE 2
20080287241Mechanically Controlled Continuously Variable Automatic Transmission - The present invention relates to a mechanically controlled continuously variable automatic transmission, comprises a housing and a torque converting mechanism mounted in the housing, the torque converting mechanism comprising an input part, a rotatable or rotary carrier, at least one eccentric assembly which is rotatablely mounted on the carrier, and an output part, wherein the input part and the carrier can rotate independently with respect to each other, and have respective rotation axes which are collinear. Each of the at least of one eccentric assembly comprises an eccentric mass which is driven to rotate around its rotation axis by the input part, the output part is provided with only one one-way clutch directly connected therewith. The mechanically controlled continuously variable automatic transmission not only can automatically adjust the output speed and moment depending upon the magnitude of load applied thereto so as to well achieve a function of stepless automatic change of the speed, but is also simple in structure, high in transmission efficiency, and long in life time. Furthermore, the transmission can be applied to an operating condition of high rotary speed and can effectively transmit large power and motive power with large torque, so that it can be used in various vehicles and has a wide application range.11-20-2008
20080234088STEP AUTOMATIC TRANSMISSION - An automatic transmission of a motor vehicle, comprising a plurality of planetary gear units; a plurality of frictional elements, the frictional elements assuming engaged/disengaged condition upon receiving a ratio change instruction thereby to establish a desired speed of the transmission with the aid of the planetary gear units; a deceleration detecting means that detects a deceleration of the motor vehicle; a gear ratio detecting means that detects an actual gear ratio that is actually established in the transmission; and an interlock judgment means that judges whether or not the transmission is subjected to an interlock, the interlock being a condition wherein upon receiving the ratio change instruction, at least one of the frictional elements is brought into unintended engagement. The interlock judgment means is configured to carry out judgment of the interlock by analyzing a deceleration of the vehicle and a relation between a gear ratio intended by the ratio change instruction and an actual gear ratio actually established by the transmission while the transmission is not under a ratio change.09-25-2008

Patent applications in class Planetary gear transmission systems or components

Patent applications in all subclasses Planetary gear transmission systems or components