Gear shift mechanism

Details Gear shift mechanism Gear shift mechanism

2011-06-21

2011-06-21

Ho, Ha D. (Department: 3655)

Machine element or mechanism

Gearing

Interchangeably locked

C074S473110, C074S473300

Reexamination Certificate

active

07963182

ABSTRACT:
A power-assisted gearshift mechanism for a manual transmission, comprising a shift rail mounted for axial movement to select one or more gears, a control arm engageable with the shift rail to cause axial movement of the shift rail in response to operation of a operator control, and a fluid pressure actuator, the fluid pressure actuator comprising a piston moveable in a cylinder, wherein fluid pressure in the cylinder causes force to be applied to the shift rail, the cylinder having a fluid supply connection and a fluid exit connection, and wherein the fluid exit connection is closeable to cause the fluid pressure within the cylinder to change, and the fluid exit connection comprising a bore within the shift rail, wherein movement of the control linkage is operable to open or close the bore.

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