Transmission having a backup latch mechanism

Details Transmission having a backup latch mechanism Transmission having a backup latch mechanism

2005-12-20

2008-10-28

Lewis, Tisha D (Department: 3681)

192 clutches and power-stop control

Clutches

Operators

C192S083000

Reexamination Certificate

active

07441643

ABSTRACT:
A transmission has a source of pressurized fluid, a low pressure reservoir, a plurality of hydraulically actuated clutches, a first plurality of valve mechanisms, and a second plurality of valve mechanisms. Each of the first plurality of valve mechanisms is associated with one of the plurality of hydraulically actuated clutches and configured to selectively fill and drain the associated one of the plurality of hydraulically actuated clutches. Each of the second plurality of valve mechanisms is associated with one of the plurality of hydraulically actuated clutches and configured to selectively fill and drain the associated one of the plurality of hydraulically actuated clutches. The transmission also includes a master latch mechanism in fluid communication with only the second plurality of valve mechanisms. The master latch mechanism is configured to selectively affect movement of the second plurality of valve mechanisms in response to an electrical power failure.

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patent: 63243556 (1988-10-01), None

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