Motors: expansible chamber type – Working member position feedback to motive fluid control – Follower type
Patent
1988-06-15
1990-05-01
Look, Edward K.
Motors: expansible chamber type
Working member position feedback to motive fluid control
Follower type
91376R, 605471, F15B 910
Patent
active
049208578
ABSTRACT:
In a hydraulic pressure booster comprising a booster piston slidably fitted in a booster cylinder coupled to a rear end of a master cylinder, the piston having at a leading end thereof an output rod abutting against a rear end of a master piston slidably fitted in the master cylinder, an inlet valve interposed between an output hydraulic oil chamber defined to face a back surface of the booster piston and an input hydraulic oil chamber leading to a hydraulic pressure supply source, the inlet valve being opened in response to an advancing movement, relative to the booster piston, of a valve piston connected to an operating member and slidably fitted in the booster piston, an outlet valve interposed between the output hydraulic oil chamber and an outlet chamber leading to an oil tank, said outlet valve being adapted to be closed in response to the advancing movement of the valve piston relative to the booster piston, and a reaction mechanism provided between the valve piston and the output rod for transmitting an operational reaction force of the output rod to the valve piston, the reaction mechanism comprises a reaction piston slidably fitted in the valve piston in such a manner that a front end thereof is capable of abutting against either of the output rod and the booster piston integral with the output rod, and a hydraulic pressure of the output hydraulic oil chamber acting on a back surface of the reaction piston, and an operation-starting set spring interposed between the valve piston and the reaction piston for biasing the reaction piston rearwardly relative to the valve piston.
REFERENCES:
patent: 3677138 (1972-07-01), Goscenski
patent: 3979912 (1976-09-01), Kuromitsu
patent: 4642990 (1987-02-01), Mizusawa et al.
Horiuchi Makoto
Miyakawa Yoshitaka
Sakurai Kazuya
Honda Giken Kogyo Kabushiki Kaisha
Look Edward K.
Nissin Kogyo Kabushiki Kaisha
LandOfFree
Hydraulic pressure booster does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic pressure booster, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic pressure booster will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-822657