Concetric solenoid valve and sump assembly

Details Concetric solenoid valve and sump assembly Concetric solenoid valve and sump assembly

B - Operations, Transporting

60

T

B60T 8/36 (2006.01) B60T 8/42 (2006.01)

Patent

CA 2132530

2132530 9322168 PCTABS00027 The combination solenoid valve and sump assembly comprises a solenoid valve (40, 140, 240, 340, 440) located within a stepped bore (16) of a modulator body (15) of an adaptative braking system (10). The solenoid valve (40, 140, 240, 340, 440) includes a slidable shuttle valve (50) disposed sealingly at an end thereof, and the sump (80, 180, 280, 380, 480) is disposed coaxially relative to the solenoid valve. A movable piston (70) engages sealingly both the solenoid valve (40) and a portion of the stepped bore (16) in a first embodiment, and is biased by a spring (73, 74) located concentrally relative to the windings (41) of the solenoid valve (40). The stepped bore (16) communicates with a pump (14) which, along with a master cylinder (20), provides fluid pressure to appropriate portions of the stepped bore (16). The movable piston (70), solenoid valve (40), and stepped bore (16) define a sump chamber (80) which receives fluid decayed away from a brake connection line (24) communicating with the stepped bore (16), and retains the fluid for communication to the pump (14) of the system (10). Other embodiments provide the movable piston (170, 242, 370, 470) at the rear of the solenoid valve (140, 340) and as a movable housing pole part (242), and located sealingly and slidably about a movable solenoid rod (443) of the solenoid valve (440).

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