Hydraulic tensioner with a pressure relief valve

Details Hydraulic tensioner with a pressure relief valve Hydraulic tensioner with a pressure relief valve

1995-04-11

1996-11-26

Schoeppel, Roger J.

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

474135, F16H 712

Patent

active

055779700

ABSTRACT:
A hydraulic tensioner having a plunger slidably fitted in a cavity in a housing and biased in a protruding direction by a spring and fluid. A check valve permits fluid to only flow into, and thereby protrude the plunger, but not out of the cavity. A pressure relief valve is mounted on the housing and is in communication with the cavity. The relief valve includes a flat spring member applying a preload against a reed valve to seal an exhaust passageway connecting to the cavity.

REFERENCES:
patent: 4507103 (1985-03-01), Mittermeier
patent: 4708696 (1987-11-01), Kimura et al.
patent: 4713043 (1987-12-01), Biedermann
patent: 4874352 (1989-10-01), Suzuki
patent: 4881927 (1989-11-01), Suzuki
patent: 5116284 (1992-05-01), Cho
patent: 5259820 (1993-11-01), Mott
patent: 5277664 (1994-01-01), Mott
patent: 5346436 (1994-09-01), Hunter et al.
patent: 5352159 (1994-10-01), Suzuki et al.
patent: 5366415 (1994-11-01), Church et al.
patent: 5370584 (1994-12-01), Todd
patent: 5383813 (1995-01-01), Odai

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