Actuating device for coupling of an automatic transmission of a

Details Actuating device for coupling of an automatic transmission of a Actuating device for coupling of an automatic transmission of a

1997-01-21

1998-09-08

Freay, Charles G.

Power plants

Pressure fluid source and motor

Ram driven by fluid pumped from reservoir

417416, 417470, 417570, F04B 1704, F16D 3102

Patent

active

058028498

ABSTRACT:
An actuating device for a coupling of an automatic transmission of a vehicle includes a housing and at least one piston slide positioned in the housing for pumping a pressure medium to a coupling element. At least one piezo element is positioned in the housing and acts on the at least one piston slide for displacing the piston slide from a neutral position in a reciprocating displacement direction within the housing.

REFERENCES:
patent: 4137020 (1979-01-01), Ito et al.
patent: 4492106 (1985-01-01), Amighini
patent: 4995790 (1991-02-01), Schill et al.
patent: 5409356 (1995-04-01), Massie

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