Motors: expansible chamber type – Working member position feedback to motive fluid control – Follower type
Patent
1975-05-27
1976-11-30
Maslousky, Paul E.
Motors: expansible chamber type
Working member position feedback to motive fluid control
Follower type
91378, F15B 910
Patent
active
039942040
ABSTRACT:
A hydraulic braking force multiplying device comprising an output member slidably fitted on a housing for actuating a piston of a hydraulic master cylinder, a working chamber defined between the housing and the output member, a valve seat member slidably fitted in an axial bore of the housing and rigidly secured to the output member, an input member slidably fitted in the axial bore and defining an intermediate chamber between the valve seat member, a valve member adapted to be actuated by the input member and having a valve portion of a valve mechanism for cooperating with a valve seat formed on the valve seat member, a pressure chamber permanently communicating with a source of pressure fluid being and being disposed in the housing and adapted to be connected with the intermediate chamber through the valve mechanism, a passage formed in the valve member for connecting the intermediate chamber with the working chamber, and a passage formed in the input member for connecting the intermediate chamber with a reservoir for hydraulic fluid, the connection through the passage in the input member being cut off when the input member engages with the valve member.
REFERENCES:
patent: 2544042 (1951-03-01), Pontius
patent: 2775957 (1957-01-01), Anderson
patent: 2883970 (1959-04-01), Stelzer
patent: 2883971 (1959-04-01), Ayers, Jr.
patent: 3747473 (1973-07-01), Bach et al.
Maslousky Paul E.
Tokico Ltd.
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