F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
303/81
F15B 11/08 (2006.01) B60T 13/16 (2006.01)
Patent
CA 1133030
PRESSURE LIMITER FOR HYDRAULIC BRAKE BOOSTER ABSTRACT OF THE DISCLOSURE The present invention relates to a hydraulic brake booster and a shuttle valve which is operable to limit the pressure communicated to a pressure chamber within the hydraulic brake booster. The shuttle valve is disposed within a control valve which is operater-actuated to communicate pressurized fluid to the pressure chamber so as to provide a power assist to braking via a piston responsive to pressurized fluid in the pressure chamber. The shuttle valve is exposed to the pressure chamber and movable relative to the control valve when the pressure in the pressure chamber is above a predetermined value in order to terminate or decrease communication of pressurized fluid to the pres- sure chamber. At the same time the shuttle valve cooperates with the control valve to reopen communication to an outlet as the control valve operates to close communication thereto during braking.
328485
Bendix Corporation (the)
Macrae & Co.
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