Planetary gear transmission systems or components inventions 07/08

20080182694 - Electrically variable transmission device using multiple pairings of electrical machines: There is provided a transmission device having an electrically variable output that employs three electrically powered motor-generators, or machines. The electrically-variable transmission device comprises first, second and third electrical machines coaxial to and coupled to a plurality of planetary gear sets. Each planetary gear set coupled to a main shaft... Agent: General Motors Corporation Legal Staff

20080182693 - Torque-transmitting assembly with dog clutch and hydrostatic damper and electrically variable transmission with same: A torque-transmitting assembly is provided that includes a dog clutch isolated by a device such as a rotary hydrostatic damper from relative loading on the torque input member and torque output member that it is to connect for common rotation and torque transmission. Although its use is not limited to... Agent: General Motors Corporation Legal Staff

20080182695 - Dual clutch axle assembly: A rear axle assembly for a motor vehicle which includes two clutch packs to deliver torque to the right and left hand driven axle shafts of a motor vehicle. The axle assembly clutch packs are efficiently packaged within the axle housing within the inside the diameter of the axle ring... Agent: Borgwarner/bhgl

20080182696 - Method and apparatus to control operation of a hydraulic control circuit for an electro-mechanical transmission: There is provided a control system for electro-mechanical transmission that is selectively operative in a plurality of fixed gear modes and continuously variable modes comprising first and second electrical machines and four hydraulically-actuated clutches in fluid communication with a hydraulic circuit comprising first, second and third pressure control devices and... Agent: General Motors Corporation Legal Staff

20080182697 - Low-ratio reducer-multiplier transmission system: one movement input [1]; one movement output [2]; a first ring gear [3] of a first planet gear; a first planet carrier [4] of a first planet gear; a first sun gear [5] of a first planet gear; a second sun gear [6] of a second planet gear; a second... Agent: Merchant & Gould PC

20080182698 - Control device for vehicular drive system: A drive system has an electrically controlled differential portion (11) in which a differential state between an input-shaft rotation speed and an output-shaft rotation speed is controlled upon controlling a first electric motor (M1), and a shifting portion (20) and a second electric motor (M2) disposed in a power transmitting... Agent: Oliff & Berridge, PLC

20080182699 - Transmission system for pump drive: A transmission system for use in a pump system comprising a prime mover driving a pump, the transmission system comprising: an epicylic gear system comprising a sun gear and a ring gear, and a planet gear engaged between the sun gear and ring gear; a main input drive arranged to... Agent: Schlumberger Technology Corporation David Cate

20080182700 - Multi-speed countershaft transmission with a planetary gear set and method: A transmission is provided that combines first and second shaft members in a countershaft configuration with a planetary gear set and first and second head gear sets to provide ratios. Each of the shaft members includes gears in no more than four co-planar, intermeshing gear sets (and in some embodiments... Agent: General Motors Corporation Legal Staff

20080182701 - Worm wheel, gear, and electric motor: The invention relates to a worm wheel that is combined with an output shaft to one piece made of plastic material, to a gear with such worm wheel, and to an electric motor with such gear.... Agent: Sughrue Mion, PLLC

20080182702 - Electronic locking differential with direct locking state detection system: An axle assembly with an electronic locking differential that employs a locking mechanism having components that are fixed to one another along an axis such that they co-translate with one another when the actuator that effects the locking and unlocking of the differential is operated. A method for assembling a... Agent: Harness, Dickey & Pierce, P.L.C

20080182703 - Spur wheel differential with a planetary gear: A spur wheel differential with improved operating properties are achieved while maintaining the compact construction. The spur wheel differential 1, particularly for a motor vehicle, includes a planetary gear with a planet carrier 3 constructed as a sum shaft, with two differential shafts, which are arranged coaxial to the sum... Agent: Volpe And Koenig, P.C.

20080182705 - Multi-speed transmission: A transmission is disclosed having an input member, an output member, a plurality of planetary gear sets, a plurality of interconnecting members and a plurality of torque-transmitting mechanisms. The plurality of planetary gear sets has first, second and third members. The input member is continuously interconnected with a member of... Agent: General Motors Corporation Legal Staff

20080182704 - Multiple speed automatic transmission: A multiple-speed automatic transmission includes an input, output, a first gear unit drivable connected to the input and including a component rotating at the speed of the input and a first gear unit output, the first gear unit producing a gear ratio of a speed of the input and a... Agent: Macmillan, Sobanski & Todd, LLC

20080182706 - Multi-speed transmission: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes.... Agent: General Motors Corporation Legal Staff

20080182707 - Automatic speed changing device: Disclosed is an automatic speed changing device in which speed is automatically changed according to a predetermined amount of rotation without user's arbitrary manipulations. The automatic speed changing device of the present invention comprises a hub unit including a hub shaft formed with a sun gear, and a hub shell... Agent: Ladas & Parry LLP

20080182708 - Epicyclic gear mechanism: An epicyclic gear mechanism includes: a sun gear; a ring gear positioned outside of the sun gear, with respect to a radial direction of the sun gear; a plurality of planet gears positioned between the sun gear and the ring gear with respect to the radial direction, each of the... Agent: Morrison & Foerster LLP

20080176696 - Electrically variable transmission having three interconnected planetary gear sets and clutched input: The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first, second and third differential gear sets, a battery, two electric machines serving interchangeably as motors or generators, and five selectable torque-transfer devices (two clutches and three brakes) and possibly a dog clutch.... Agent: General Motors Corporation Legal Staff

20080176695 - Hybrid vehicle transmission with a mechanical reverse function: The disclosed hybrid electric vehicle powertrain has an engine, a motor, a generator and a battery that define electro-mechanical power flow paths to vehicle traction wheels in both a forward drive operating mode and a reverse drive operating mode.... Agent: Brooks Kushman P.c./fgtl

20080176697 - Multi-mode electrically variable transmissions with three fixed interconnections and two input clutches: The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including three differential gear sets, a battery, three interconnecting members, two electric machines serving interchangeably as motors or generators and five or six selectable torque-transfer devices. The selectable torque transmitting devices are engaged to... Agent: General Motors Corporation Legal Staff

20080176698 - Wheel set assembly: An improved wheel set assembly that has a fork or cradle to turn the platform through an angle in relating to the vertical axis, two independent, motorised internally hollow wheels located on the same central horizontal axis and that are kept apart at a certain distance, which are supported by... Agent: Sturm & Fix LLP

20080176699 - Hydro-mechanical transmission: A hydro-mechanical transmission system. The system includes an engine having a drive shaft that extends into and supplies power to a gear box having a first and second planetary gear set, wherein the first and second planetary gear set includes a sun with a first ring gear fixed and a... Agent: O'keefe, Egan, Peterman & Enders, L.l.p.

20080176700 - Electro-hydraulic control system with multiplexed pressure switch diagnostic system: An electro-hydraulic control system is provided, preferably for a countershaft transmission, with a diagnostic system that uses extensive multiplexing of pressure switches to provide accurate information regarding the position of valves within the control system while minimizing the number of required components.... Agent: General Motors Corporation Legal Staff

20080176701 - Geared motor reducer and geared motor: An inner pin plate having an inner pin integrally formed thereon is arranged on an axial motor side of an external gear, the inner pin being capable of restraining rotation of the external gear on its axis. An inner pin plate functions as a part of a casing body of... Agent: Squire, Sanders & Dempsey L.l.p.

20080176702 - Torque vectoring system: A system for a torque vectoring differential in motor vehicle applications is provided. The system includes a shaft (30), a first gear (44), a second gear (46), and a set of planet gears (50). The first gear (44) engages and rotates together with the shaft (30). The first and second... Agent: Brinks Hofer Gilson & Lione

20080176703 - Locking differential improvements: A differential locker having a clutch member (1) having a spring retaining aperture (2) for holding a spring (7) in collinear with a pin (3, 4) in a correspondingly positioned further clutch assembly. The spring access through the side (11, 12) of the clutch assembly is provided by a slot... Agent: Brooks Kushman P.c.

20080176704 - Multi-mode electrically variable transmissions with two brakes and three input clutches: The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including three differential gear sets, a battery, two electric machines serving interchangeably as motors or generators and five selectable torque-transfer devices. The selectable torque transmitting devices are engaged to yield an EVT with a... Agent: General Motors Corporation Legal Staff

20080171625 - Power-split transmission for a hybrid vehicle: The invention relates to power-split transmission for a hybrid vehicle having an internal combustion engine, wherein the transmission has two electric motors (E1, E2) and a plurality of planetary gearings (N1, N2, N3, N4), and wherein for starting in a first driving range, a single power-split structure is provided at... Agent: Collard & Roe, P.C.

20080171626 - Hydromechanical transmission with output summer: A hydromechanical transmission having at least first and second three element planetaries directly connected to one another. The first and second three element planetaries work in conjunction with a hydrostatic transmission and a plurality of clutches in order to provide at least first and second forward operating modes having continuous... Agent: Zarley Law Firm P.L.C

20080171627 - Multi-speed transmission: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes.... Agent: General Motors Corporation Legal Staff

20080171628 - Multi-speed transmission: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes.... Agent: General Motors Corporation Legal Staff

20080171629 - Multi-speed transmission: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes.... Agent: General Motors Corporation Legal Staff

20080171630 - Apparatus for restraining axial movement of a ring gear in a gearbox for a wind turbine: The gearbox may also comprise a retaining means comprising a retainer ring having a first leg fitted in mating relationship with the housing and a second leg depending there from and overlapping at least a portion of the ring gear. The retainer ring has two free ends spaced apart forming... Agent: Beusse Wolter Sanks Mora & Maire, P.A.

20080167152 - Transmission mechanism: A transmission mechanism includes a motor, a first planetary gear set, a clutch connected with a sun gear, a second planetary gear set, a transmission shaft, an intermediate shaft and an output shaft. When the clutch is moved to the first position, the transmission shaft engages with the second planetary... Agent: Rabin & Berdo, PC

20080167153 - Drive system for individually driving two drive wheels of a drive wheel pair: A drive system for individually driving two wheels of a drive wheel pair of a vehicle. The drive system has two infinitely variable transmission drives which are drivingly connected, via a transmission arrangement, to an associated drive wheel Each transmission arrangement includes two transmission units arranged one behind the other,... Agent: Davis Bujold & Daniels, P.l.l.c.

20080167154 - Planetary roller transmission device and vehicle comprising same: A planetary roller transmission device has a rotatable input shaft and an output shaft on the same axis, a plurality of planetary rollers which are rollable around the outer periphery of a sun roller provided on the input shaft, an output ring which is provided integrally with the output shaft,... Agent: Staas & Halsey LLP

20080167155 - Automatic transmission: An automatic transmission includes a planetary gear mechanism, an engagement element group including a particular engagement element having first and second pressure chambers, a pressure control valve to regulate the fluid pressure for the particular engagement element, and a selector valve arranged to connect the second pressure chamber with the... Agent: Foley And Lardner LLP Suite 500

20080167156 - Electric variable inertia apparatus: An electric variable inertia apparatus uses a servo drive device to drive a planetary gear mechanism to which a load assembly is attached to provide variable and wide-ranging rotational inertia. A planetary frame and a ring gear of the planetary gear mechanism act as two input ends of the electric... Agent: Hershkovitz & Associates, LLC

20080167157 - Automatic transmission and gear train: An automatic transmission assembly is constructed or modified to minimize effects of wear thereon and maximize its operational life. The assembly includes a transmission case and has a modified ring-shaped center support that is to be secured against rotation within the transmission case. A center support plate, which is attachable... Agent: Crowell & Moring LLP Intellectual Property Group

20080167158 - Impact power tool: An impact power tool includes a motor, a first planetary gear set, a clutch having a sun gear, a second planetary gear set, a transmission shaft, an intermediate shaft, an impact seat and an output shaft. When the clutch moves to a first position, the transmission shaft engages with a... Agent: Rabin & Berdo, PC

20080161149 - Multi-step transmission: The 8-gear multi-step transmission comprises a drive input shaft (AN), a drive output shaft (AB), four planetary gearsets (RS1, RS2, RS3, RS4), eight rotary shafts (1, 2, 3, 4, 5, 6, 7, 8) and five shift elements (A, B, C, D, E). An internal gear (HO1) of the first planetary... Agent: Davis Bujold & Daniels, P.l.l.c.

20080161150 - Multispeed power tool transmission: A power tool with a housing, a motor, an output spindle and a transmission assembly with a transmission and a speed selector. The transmission includes a plurality of planetary transmission stages that couple the motor to the output spindle. The speed selector includes only one switch member that is slidably... Agent: Harness Dickey & Pierce, P.L.C