05669842 is referenced by 101 patents and cites 3 patents.

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 permit the operation of auxiliary devices, such as main hydraulic pumps, air conditioners or power steering pumps. A fluid operated clutch is incorporated between the engine and the gearing so that the motor/generators can drive the PTO shafts independently of the engine. The main pump fluid output can be directed to engage the clutch when the engine input is desired. The motor/generators are controlled to provide output speed resulting in one member of the gearing being driven at a speed equal to the idle speed of the engine, such that the clutch can be synchronously engaged.

Title
Hybrid power transmission with power take-off apparatus
Application Number
8/638664
Publication Number
5669842
Application Date
April 29, 1996
Publication Date
September 23, 1997
Inventor
Michael Roland Schmidt
Carmel
IN, US
Agent
Donald F Scherer
Assignee
General Motors Corporation
MI, US
IPC
B60K 1/00
F16H 3/72
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