Cage and retainer combination for check valves and slack adjuste

Details Cage and retainer combination for check valves and slack adjuste Cage and retainer combination for check valves and slack adjuste

1990-01-29

1991-03-05

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

474138, F16H 708

Patent

active

049974114

ABSTRACT:
A slack adjuster (500) is provided that is particularly advantageous for use in tensioning vehicular timing belts or chains. Adjuster (500) has substantially coaxially aligned status plunger (48), dynamic plunger (74), and sleeve (66). A first check valve (56) controls fluid flow between a first low pressure fluid reservoir or chamber (50) on plunger (48) and a second fluid chamber (84) in plunger (74). A second check valve (80) controls fluid flow between chamber (84) and a third fluid chamber in sleeve 66 includes a passageway (84) and also operates to prevent air from re-entering chamber (82) from passsageway (84).

REFERENCES:
patent: 4695268 (1987-09-01), Kodama et al.
patent: 4741299 (1988-05-01), Matsuura et al.
patent: 4772251 (1988-09-01), Goppelt et al.
patent: 4894047 (1990-01-01), Breon et al.

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