Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Patent
1979-07-11
1981-01-13
Cline, William R.
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
137115, 60418, G05D 1103, G05D 1610
Patent
active
042443903
ABSTRACT:
A hydraulic circuit breaker comprising an inlet chamber supplied with pressurized fluid from a pump and connected to a hydraulic circuit of the open-center type through a variable constriction, to a control chamber via a passage of reduced cross-section provided in a differential piston which separates both chambers from each other, and to a hydraulic accumulator through a check-valve, and further comprising a variable-volume vessel in communication with the control chamber and comprising a valve element responsive to the pressure reigning in said chamber for opening or closing a leak passage of restricted cross-section intended to allow the vessel to be discharged. In order to simplify the manufacture of the device and make easier its possible adjustment, the present invention proposes to realize the variable-volume vessel as an interchangeable capsule which is received in the proper control chamber and additionally serves as an abutment for limiting the stroke of the differential piston. This device is intended mainly for use in automotive vehicles having both power-assisted brakes and power-assisted steering.
REFERENCES:
patent: 3393945 (1968-07-01), Reichard
patent: 3915186 (1975-10-01), Thomas
patent: 4016895 (1977-04-01), Budecker
patent: 4073140 (1978-02-01), Lang
patent: 4131125 (1978-12-01), Tanguy
patent: 4199941 (1980-04-01), Farr
Cline William R.
Decker Ken C.
Schoenle Paul David
Societe Anonyme DBA
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