Hydraulic pressure booster

Details Hydraulic pressure booster Hydraulic pressure booster

1989-07-28

1992-01-14

Look, Edward K.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91374, 91393, 60548, F15B 910, F15B 2110, B60T 1312

Patent

active

050799908

ABSTRACT:
The invention relates to a hydraulic pressure booster which can be used to perform servo control of input and output at the preset servo ratio in, for example, a brake booster. In particular, the invention relates to a hydraulic pressure booster, which is designed to reduce the loss stroke of an input shaft in the initial stage of operation. This can be achieved by providing a stopper which directly abuts the input shaft when it is non-operational and which maintains the input shaft at the preset advance position separated from the detent in relation to the power piston.

REFERENCES:
patent: 3796134 (1974-03-01), Kaptrosky
patent: 3926092 (1975-12-01), Myers
patent: 4161867 (1979-07-01), Adachi
patent: 4514981 (1985-05-01), Brown et al.
patent: 4642990 (1987-02-01), Mizusawa et al.
patent: 4656923 (1987-04-01), Tsuyuki et al.
patent: 4685297 (1987-08-01), Brown
patent: 4773223 (1988-09-01), Mizusawa et al.
patent: 4781026 (1988-11-01), Kiromitzu
patent: 4819433 (1989-04-01), Belart
patent: 4876853 (1989-10-01), Shirai et al.
patent: 4920857 (1990-05-01), Horiuchi et al.
patent: 4967560 (1990-11-01), Konishi

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