Fluid-controlled actuator assembly

Details Fluid-controlled actuator assembly Fluid-controlled actuator assembly

1997-04-25

1998-10-06

Denion, Thomas E.

Motors: expansible chamber type

Single chamber formed by mutually relatively movable...

91464, 91465, 92 131, 92 135, 92 136, 92 62, F01B 720

Patent

active

058161317

ABSTRACT:
A fluid-controlled actuator assembly for a gearbox of a vehicle. The actuator is provided with a four-position mobile element, with a first and a second chamber separated in a sealed manner from the mobile element, and with auxiliary positioning elements suitable for determining a stop position of the mobile element. Also included are first and second solenoid valves suitable for supplying pressurized fluid respectively to the first and to the second chamber and for discharging it from them, such that when the fluid is supplied into both the chambers, the mobile element is maintained by the auxiliary positioning elements in the stop position. When the fluid is supplied into one of the chambers and is discharged from the other, the mobile element adopts one of two lateral positions with respect to the stop position. First and second springs associated with the mobile element and suitable for maintaining the said mobile element in a rest position are interposed between the stop position and one of the lateral positions when the fluid is discharged from both the chambers.

REFERENCES:
patent: 2248426 (1941-07-01), Fowler
patent: 2716965 (1955-09-01), Klamp
patent: 4422474 (1983-12-01), Basraie et al.
patent: 4493244 (1985-01-01), Stillfried et al.
patent: 4995305 (1991-02-01), Garrigues et al.
patent: 5125326 (1992-06-01), Sarcona
patent: 5669265 (1997-09-01), Adler

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