Hydraulic servo assembly for an internal electronic...

Details Hydraulic servo assembly for an internal electronic... Hydraulic servo assembly for an internal electronic...

2006-08-01

2006-08-01

Fenstermacher, David M. (Department: 3682)

Machine element or mechanism

Control lever and linkage systems

Multiple controlled elements

C074S473230, C074S473240, C477S125000, C477S127000

Reexamination Certificate

active

07082851

ABSTRACT:
A hydraulic servo assembly includes a piston slidably disposed within a housing and a pin extending from the piston. The pin is interconnected with a servo link rod of the ETRS system. A port enables inlet of hydraulic fluid to induce movement of the piston and the pin from a first position to a second position to pull the servo link rod thereby shifting the transmission range to the out-of-park position. When in the first position the pin biases a forward-reverse enable (FRE) valve of the ETRS system in a first position. When in the second position a bias force of the pin is relieved from the FRE valve enabling the FRE valve to shift to a second position.

REFERENCES:
patent: 5078242 (1992-01-01), Ratke et al.
patent: 5179868 (1993-01-01), Thibeault
patent: 6300868 (2001-10-01), Barr
patent: 6698555 (2004-03-01), Schafer et al.
patent: 6701797 (2004-03-01), Heuver
patent: 2004/0011609 (2004-01-01), Schmid

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