Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1988-12-06
1989-05-30
Walton, George L.
Fluid handling
Systems
Flow path with serial valves and/or closures
137381, 188352, 222545, 222562, 251216, 251218, 251351, F16K 3150, F16K 2708
Patent
active
048341401
ABSTRACT:
A brake bleeder valve includes a spring biased ball check valve which allows bleeding of brake wheel cylinders by a single individual. The brake bleeder valve has an elongated generally cylindrical body terminating at a lower end in a conical tip dimensioned for engagement in a complementary formed valve seat in a brake wheel cylinder. An intermediate portion of the body has external threads for engagement with complementary formed threads in a brake wheel cylinder. An upper end of the body terminates in a frusto conical hose fitting and an enlarged hexagonal wrench flat portion is formed between the hose fitting and the intermediate threads. An enlarged diameter spherical seat is formed within the hose fitting and movably receives a spherical spring urged check ball. An O-ring around the body portion prevents air leakage past the threads. The central bore has a laterally extending outlet adjacent the conical tip portion. In use, the bleeder valve is loosened slightly to disengage the conical tip from the wheel cylinder valve seat and the brake pedal is repeatedly depressed and released. The check valve allows air and fluid to be exhausted upon each depression of the pedal, but prevents air from being inducted upon release of the brake pedal. A novel dust cap is disclosed for frictional engagement over the bleeder valve hose fitting.
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Kearns Jerry T.
Walton George L.
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