Centrifugal pressure compensator for a variable drive pulley

Details Centrifugal pressure compensator for a variable drive pulley Centrifugal pressure compensator for a variable drive pulley

1984-06-18

1985-11-12

Leppink, James A.

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Speed responsive

474 28, 474 13, F16H 1106

Patent

active

045525455

ABSTRACT:
A pressure compensating mechanism for a dual control piston variable drive pulley has a central chamber disposed between the control pistons. The central chamber is filled with fluid from one of the control passages and is open to exhaust through a controlled restriction. The fluid in the central chamber increases in pressure with increased rotational speed of the pulley to compensate for the centrifugal pressure buildup on one of the control pistons. The controlled restriction establishes the base pressure in the central chamber so that the resultant pressure in the central chamber compensates for centrifugal forces in excess of the centrifugal effect on one of the control pistons thereby compensating, at least partially, for the centrifugal pressure effect on the other of the control piston.

REFERENCES:
patent: 3782213 (1974-01-01), Rattunde
patent: 3906808 (1975-09-01), Zaiser et al.
patent: 4023425 (1977-05-01), Parker
patent: 4056015 (1977-11-01), Johannes et al.
patent: 4143558 (1979-03-01), Deursen et al.

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