Machine element or mechanism – Gearing – Interchangeably locked
Patent
1992-06-01
1993-08-10
Braun, Leslie A.
Machine element or mechanism
Gearing
Interchangeably locked
91422, F15B 1108, F16H 6330
Patent
active
052338789
ABSTRACT:
A hydraulic closed loop control for positioning a transmission shift rail and synchronizer fork has recesses on the rail and ports in a valve body in which the rail is disposed. Fluid flow between the ports as permitted by the rail recesses controls the position of valves which in turn control the position of the rail. The valves control the position of the rail by routing pressurized fluid to one of two opposing sides of a piston fixed to the rail in response to the flow of fluid from the valve body ports. The pressurized fluid moves the rail to a desired position with the flow of pressurized fluid being interrupted when that position is reached.
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Hunter Joseph H.
Klemen Donald
Braun Leslie A.
General Motors Corporation
Hinman Kevin M.
Ta Khoi Q.
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