Hydraulic tensioner with porous vent

Details Hydraulic tensioner with porous vent Hydraulic tensioner with porous vent

1996-10-03

1998-02-17

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

F16H 708

Patent

active

057186502

ABSTRACT:
A hydraulic tensioner having a porous vent formed of sintered powder metal adapted to permit air to readily escape from within the tensioner while inhibiting air ingestion during cycling and limiting oil leakage. The vent is located within an aperture of the plunger near the highest point of the tensioner or at the top of the spring within the interior space of the plunger. Alternatively, the air vent may be located at the oil supply inlet before the oil enters the tensioner's fluid chamber.

REFERENCES:
patent: 3228674 (1966-01-01), Wustenhagen
patent: 4504251 (1985-03-01), Mittermeier
patent: 4874352 (1989-10-01), Suzuki
patent: 5259820 (1993-11-01), Mott
patent: 5277664 (1994-01-01), Mott
patent: 5314388 (1994-05-01), Suzuki et al.
patent: 5346436 (1994-09-01), Hunter et al.

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