Power plants – Pressure fluid source and motor – Pulsator
Patent
1990-07-12
1991-08-13
Look, Edward K.
Power plants
Pressure fluid source and motor
Pulsator
60550, 60413, 91460, B60T 1312
Patent
active
050385640
ABSTRACT:
A fluid pressure booster device includes a booster body, a control piston in the booster body for forward and rearward movements to define a boosting chamber between the control piston and a rear surface of a master piston of a master cylinder, a valve piston in the control piston for forward and rearward movements and communicating at its front face with the boosting chamber, a reaction piston in the control piston for forward and rearward movements and connected to an operating member, the reaction piston defining a reaction chamber between itself and a rear face of the valve piston, a stroke accumulator having an accumulation chamber connected to the reaction chamber, an inlet valve disposed between the control piston and the valve piston and interposed in a flow passage extending between the boosting chamber and a fluid pressure source, the inlet valve being closed when the valve piston is retracted and opening when the valve piston advances, and an outlet valve disposed between the control piston and the valve piston so as to open when the valve piston is retracted and to be closed when the valve piston advances. This enables a fluid pressure to be applied to the master cylinder in response to the motion of the operating member within a restricted stroke range.
REFERENCES:
patent: 4126996 (1978-11-01), Leiber
patent: 4433543 (1984-02-01), Thomas et al.
patent: 4490977 (1985-01-01), Fulmer
patent: 4798127 (1989-01-01), Levrai et al.
patent: 4976105 (1990-12-01), Horiuchi et al.
Horiuchi Makoto
Miyakawa Yoshitaka
Sakurai Kazuya
Shimizu Atsushi
Honda Giken Kogyo Kabushiki Kaisha
Kapsalas George
Look Edward K.
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