Power plants – Pressure fluid source and motor – Pulsator
Patent
1987-05-08
1989-01-17
Garrett, Robert E.
Power plants
Pressure fluid source and motor
Pulsator
60579, 60590, 188 718, 188370, F15B 710, F16D 5502
Patent
active
047980524
ABSTRACT:
The hydraulic brake adjuster (10) intensifying and piston assembly (30) include an exterior pressure device (11) which is disposed separate from a piston (32). The exterior pressure device (11) includes a differential area piston (12) receiving actuation fluid pressure and an outlet (26) which communicates fluid pressure to the piston assembly (30). The piston assembly (30) includes a piston bushing (40) received within the piston (32) to define substantially therebetween a pair of longitudinal pressure chambers (50, 95), a recessed piston (60) received within the piston bushing (40) to define therebetween an axial pressure chamber (70), the axial pressure chamber (70) communicating with one (50) of the pair of longitudinal pressure chambers (50, 95), and the one longitudinal pressure chamber (50) receiving actuation fluid pressure. A piston valve (90) is located within an interior opening (97) in the piston (60), the interior opening (97) communicating with the axial pressure chamber (70). The piston valve (90) extends through front (74) and rear (68) wall openings of the piston (60), and is biased by a spring (94) toward the rear wall (66). The rear wall (66) of the piston (60) and the bushing (40) define a portion of the other longitudinal pressure chamber (95) which communicates with the outlet (26) of the exterior pressure device (11).
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Allied-Signal Inc.
Decker Ken C.
Garrett Robert E.
Kapsalas George
Palguta Larry J.
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