Hydraulic tensioner with check valve vent

Details Hydraulic tensioner with check valve vent Hydraulic tensioner with check valve vent

1995-12-08

1997-07-01

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

474138, F16H 708

Patent

active

056431171

ABSTRACT:
A hydraulic chain tensioner has a check valve vent. The tensioner includes a housing having a bore with a fluid filled chamber, a hollow piston slidably received within the bore and biased in a protruding direction by a spring, and a check valve assembly which permits fluid to flow from an external source through the valve and into the fluid filled chamber. The vent includes a disc positioned against the inlet from the external source of fluid. The disc has at least one channel formed on the surface of the disc facing the external source. The channel has a first end at the periphery of the disc and a second end at the center point of the disc.

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