Power plants – Pressure fluid source and motor – Pulsator
Patent
1990-11-29
1991-08-06
Look, Edward K.
Power plants
Pressure fluid source and motor
Pulsator
60570, 60582, 91376R, B60T 1300
Patent
active
050366653
ABSTRACT:
The hydraulic brake booster (12) of the present invention comprises a full power hydraulic brake booster (12) that provides false travel during full power operation and improved pedal feel during manual operation. The booster (10) has a housing (24) with a slidable sleeve assembly (60) therein, the assembly (60) housing a sleeve member (98) which is displaced by accumulator fluid pressure against a collet housing (78) and a moveable collet member (79) located about an input member (94). The sleeve member (98) displaces the moveable collet member (79) against a resilient member (77) when the sleeve member (98) is displaced by hydraulic fluid pressure from the accumulator (14). In the absence of hydraulic fluid pressure, the spring member (77) displaces the moveable collet member (79) against the sleeve member (98) so that the moveable collet member (79) is trapped tightly between the collet housing (78) and input member (94) in order to couple the input member ( 94) with the sleeve assembly (60) for conjoint movement in the booster housing bore (26).
REFERENCES:
patent: 3237410 (1966-03-01), Sogoian
patent: 3712177 (1973-01-01), Bach et al.
patent: 4475336 (1984-10-01), Runkle
patent: 4514981 (1985-05-01), Brown et al.
patent: 4724674 (1988-02-01), Fulmer
Allied-Signal Inc.
Decker Ken C.
Look Edward K.
Nguyen Hoang
Palguta Larry J.
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