Brake booster with one-way valve on centerplate

Details Brake booster with one-way valve on centerplate Brake booster with one-way valve on centerplate

1990-02-14

1992-01-28

Look, Edward K.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91533, 92 48, 92 98R, F15B 910, F01B 1900

Patent

active

050834959

ABSTRACT:
A brake booster includes a center plate disposed within a shell. A seal member is provided to interrupt a communication between a variable and a constant pressure chamber which are located across the center plate. The seal member is formed with a lip, acting as a check valve which releases to the variale pressure chamber any pressure developed in the constant pressure chamber which is to be sealed by the seal member and which rises above the pressure in the variable pressure chamber.

REFERENCES:
patent: 3543298 (1970-11-01), Rockwell
patent: 3921501 (1975-11-01), Rosback
patent: 3958497 (1976-05-01), Gardner et al.
patent: 4189033 (1980-02-01), Katsumori
patent: 4292887 (1981-10-01), Ohta et al.
patent: 4399735 (1983-08-01), Katagiri et al.
patent: 4453450 (1984-06-01), Horsting
patent: 4542680 (1985-09-01), Takeuchi
patent: 4560326 (1985-12-01), Seki
patent: 4738186 (1988-04-01), Rossigno et al.
patent: 4787292 (1988-11-01), Tsuyuki et al.
patent: 4800799 (1989-01-01), Nishii
patent: 4898081 (1990-02-01), Fecher

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