Power plants – Pressure fluid source and motor – Pulsator
Patent
1987-02-03
1988-05-24
Hershkovitz, Abraham
Power plants
Pressure fluid source and motor
Pulsator
60589, B60T 1108
Patent
active
047457511
ABSTRACT:
The master cylinder (10) comprises a housing (12) having a longitudinal bore (14), a housing end (16) enclosed by a bearing member (18) which retains a sleeve member (20) within the bore (14), a reservoir (70) mounted on the housing (12) and a pair of pistons (30, 40) received slidably within the bore (14), one piston (30) extending through an end (24) of the sleeve member (20). The one piston has an end (32) which provides seating for a fast fill valving mechanism (110). The fast fill valving mechanism (110) comprises a piston support guide (120) supporting a fast fill seal (150) and seal retainer (160) between the support guide (120) and the surface (23) of the sleeve member (20). The seal retainer (160) engages one end (142) of a spring (140), the other spring end (143) located at the end (32) of the piston. Displacement of the one piston (30) within the bore (14) creates an increasing pressure which will, at a predetermined higher pressure, cause the spring (140) to collapse or bend and permit axial displacement of the seal (150) and seal retainer (160) away from sealing engagement with a portion (123) of the piston support guide (120), and thereby permit fast fill fluid pressure within the primary chamber (88) to communicate with an auxiliary chamber (180).
REFERENCES:
patent: 4099380 (1978-07-01), Cadeddu
patent: 4199949 (1980-04-01), Cadeddu
patent: 4514985 (1985-05-01), Cadeddu
patent: 4559781 (1985-12-01), Steer
patent: 4685300 (1987-08-01), Steer
Allied Corporation
Decker Ken C.
Hershkovitz Abraham
Palguta Larry J.
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