Motors: expansible chamber type – Working member position feedback to motive fluid control – Follower type
Patent
1980-06-20
1982-09-14
Maslousky, Paul E.
Motors: expansible chamber type
Working member position feedback to motive fluid control
Follower type
91376R, 92 99, F15B 910, F01B 1900, F16J 302
Patent
active
043489443
ABSTRACT:
A brake booster for operation in connection with a brake pedal which includes a housing having an inner wall, a diaphragm, an outer rim portion thereof being secured to the inner wall of the housing, and power piston movably disposed in the housing and air-tightly connected to an inner end portion of the diaphragm to thereby divide an interior space of the housing into first and second compartments, the power piston including a central portion composed of resin and a metallic disc member surrounding and connected to the central portion, a control valve mechanism positioned within the power piston for generating a pressure difference between the first and second compartments in response to operation of the brake pedal, and a connecting mechanism for connecting the central portion and the metallic disc member wherein the connecting mechanism includes a flange portion formed on an outer peripheral portion of the central portion of the piston and positioned in front of a radially inner peripheral portion of the metallic disc member and a plate mechanism having a plurality of detent members operably associated therewith, interposed between the flange portion and the inner peripheral portion of the metallic disc member and secured to the inner peripheral portion of the metallic disc.
REFERENCES:
patent: 3938424 (1976-02-01), Ohmi
patent: 3981227 (1976-09-01), Azuma
patent: 4005639 (1977-02-01), Welsh, Jr.
patent: 4245845 (1981-01-01), Ando et al.
patent: 4257312 (1981-03-01), Ohmi et al.
Aisin Seiki Kabushiki Kaisha
Maslousky Paul E.
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