Hydraulic chain tensioner

Details Hydraulic chain tensioner Hydraulic chain tensioner

1982-11-12

1985-03-12

Leppink, James A.

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

474 91, F16H 708

Patent

active

045042519

ABSTRACT:
A hydraulic chain tensioner with a hollow piston longitudinally guided in a hydraulic housing which is closed off at the top by a plug provided with an external thread; the plug is pressed into a smooth central bore of the hollow piston and the thread grooves are in communication with the atmospheric air by way of radial channels of the hollow piston, thus permitting a venting of the hydraulic housing; a further venting possibility exists by an excess pressure valve which is built into an ante-chamber disposed parallel to the hollow piston.

REFERENCES:
patent: 3412650 (1968-11-01), Stang, Jr.
patent: 3574418 (1971-04-01), Okabe
patent: 3603214 (1971-09-01), Murrell

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