Automatic tensioner for a timing belt

Details Automatic tensioner for a timing belt Automatic tensioner for a timing belt

1992-08-24

1993-12-28

Bui, Thuy M.

Endless belt power transmission systems or components

Means for adjusting belt tension or for shifting belt,...

Tension adjuster or shifter driven by electrical or fluid motor

F16H 708

Patent

active

052734943

ABSTRACT:
An automatic tensioner for a synchronous transmission toothed belt, including a roller adapted to cooperate with the belt and an actuator comprising within a cylindrical body: a piston pierced by a multiplicity of channels delimiting therein a pressure chamber and a supply chamber for a hydraulic fluid, a push rod secured to the piston and whose motion is suitable for being transmitted to the roller, a compression spring urging the piston towards the supply chambers, and a non-return valve received in the pressure chamber to open or close said channel, thereby allowing or preventing hydraulic fluid to pass between the pressure chamber and the supply chamber, when a lip of said valve comes into contact with or moves away from its seat in order to close or open said channels.

REFERENCES:
patent: 4790796 (1988-12-01), Okabe et al.
patent: 5116284 (1992-05-01), Cho
patent: 5167402 (1992-12-01), Nakakubo et al.

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