B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
303/87
B60T 8/52 (2006.01) B60T 8/28 (2006.01)
Patent
CA 1283678
DECELERATION AND PRESSURE SENSITIVE PROPORTIONING VALVE ASSEMBLY WITH BRAKING TORQUE ADJUSTABILITY ABSTRACT OF THE DISCLOSURE A proportioning valve assembly (10) in a housing (12) is pressure responsive to control the flow of fluid to a wheel brake. A proportioning valve (20) is disposed within a chamber (26) having an inlet (33) and outlet (114), the inlet (33) receiving pressure from a pressure generator such as a master cylinder. A poppet (80) of the proportioning valve (20) is connected by a shaft (90) with a plunger (100) disposed within another chamber (30), the other chamber (30) being isolated from fluid pressure in the chamber (26) housing the proportioning valve. A fluid-containing chamber (13) contains an iner- tia sensing mass (40) which engages a valve mechanism (34) that controls fluid communication between the fluid- containing chamber (13) and other chamber (30). A fric- tion element (120) of the wheel brake engages a braking torque responsive valve (140) which communicates fluid pressure to the other chamber (30). The position of the poppet (80) is adjusted by the braking torque responsive valve (140) in order to eliminate the variable effects of friction elements having a variation in lining thickness and coefficient of friction.
546003
Allied-Signal Inc.
Macrae & Co.
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