1
James C Polak: Planetary gearing arrangement for a transmission. General Motors Corporation, Donald F Scherer, January 31, 1978: US04070927 (274 worldwide citation)

A planetary gearing arrangement having a plurality of interconnected planetary gear sets controlled by friction drive establishing devices such as clutches and brakes for selectively establishing a plurality of forward drive ratios and a reverse drive ratio. The number of forward drive ratios availa ...


2
Michael Roland Schmidt: Two-mode, compound-split electro-mechanical vehicular transmission. General Motors Corporation, Donald F Scherer, Dean L Ellis, August 3, 1999: US05931757 (198 worldwide citation)

A two-mode, compound-split, electro-mechanical transmission utilizing an input member for receiving power from an engine, and an output member for delivering power from the transmission. First and second motor/generators are operatively connected to an energy storage device through a control for int ...


3
Michael R Schmidt, Donald Klemen: One-mode, input-split, parallel, hybrid transmission. General Motors Corporation, Donald F Scherer, September 24, 1996: US05558595 (177 worldwide citation)

A one-mode, input-split, parallel, hybrid transmission for a vehicle has an input shaft which receives power from the vehicle engine, and an output shaft which delivers power to drive the vehicle. First and second motor/generators are employed, as are energy storage units, such as batteries, for acc ...


4
Michael R Schmidt: Two-mode, input-split, parallel, hybrid transmission. General Motors Corporation, Donald F Scherer, September 24, 1996: US05558588 (134 worldwide citation)

A variable, two-mode, input-split, parallel, hybrid electric transmission for a vehicle has an input shaft receiving power from the vehicle engine, and an output shaft delivering power to drive the vehicle. First and second motor/generators are employed as are energy storage devices, such as batteri ...


5
Michael B Schmidt: Two-mode, compound-split, electro-mechanical vehicular transmission. General Motors Corporation, Donald F Scherer, September 24, 1996: US05558589 (104 worldwide citation)

A two-mode, compound-split, electro-mechanical transmission utilizing an input for receiving power from an engine. A power output is also utilized to deliver power to the drive wheels of the vehicle. First and second motor/generators are used in conjunction with an energy storage device for acceptin ...


6
James F Sherman: Integrated hybrid transmission with inertia assisted launch. General Motors Corporation, Donald F Scherer, February 8, 1994: US05285111 (101 worldwide citation)

The present invention relates to a power transmission that is interposed between the internal combustion engine and the drive ratio selection transmission of a vehicle. A motor/generator is operatively connected to the power transmission, and the power transmission selectively adds and subtracts tor ...


7
Michael Roland Schmidt: Hybrid power transmission with power take-off apparatus. General Motors Corporation, Donald F Scherer, September 23, 1997: US05669842 (99 worldwide citation)

A power transmission has an internal combustion engine and motor/generators which are combined through a summing planetary gearing. The planetary gearing cooperates with downstream gearing to provide a hybrid power transmission. A plurality of auxiliary or power take-off (PTO) shafts are included to ...


8
Erkki A Koivunen: Torque-equalizing means. General Motors Corporation, Donald F Scherer, July 3, 1979: US04159653 (93 worldwide citation)

Torque-equalizing means for a dual section toric or toroidal roller and race type transmission, including a balance lever pivotally mounted on the transmission housing, with oppositely disposed pivot members formed on the balance lever and pivotally connected to first and second reactive or groundin ...


9
Michael Roland Schmidt: Three-mode, input-split hybrid transmission. General Motors Corporation, Donald F Scherer, March 24, 1998: US05730676 (85 worldwide citation)

An electro-mechanical transmission has interconnected simple planetary gear sets having one member connected to each of a pair of motor/generators and another member connectible with an engine through a selectively operable torque transmitting device. Three additional selectively operable torque tra ...


10
Michael Roland Schmidt: Electro-mechanical powertrain. General Motors Corporation, Donald F Scherer, Dean L Ellis, August 10, 1999: US05935035 (80 worldwide citation)

An electro-mechanical powertrain has two motor/generator (m/g) units disposed in concentric coaxial arrangement with a plurality of planetary gearsets and a pair of friction brakes. An input shaft is driven by a prime mover through a selectively engageable clutch. The motor/generator units are contr ...