Brake booster for preventing unwanted reaction disc deformation

Details Brake booster for preventing unwanted reaction disc deformation Brake booster for preventing unwanted reaction disc deformation

1992-05-20

1993-11-23

Look, Edward K.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91376R, 92 99, 92100, F15B 910

Patent

active

052633985

ABSTRACT:
An improvement of a reaction transmitting mechanism for a booster is disclosed. A forward end face of a tubular portion of a valve body which abuts against a reaction disc is provided with an uneven surface. This presents a resistance to an elastic deformation of the reaction disc when a brake booster is actuated. Accordingly, an enhanced hysteresis, which represents a difference in the output between when depressing and releasing a brake pedal, is provided without increasing the hardness of the reaction disc.

REFERENCES:
patent: 3082744 (1963-03-01), Gardner
patent: 3172334 (1965-03-01), Wuellner et al.
patent: 4425760 (1984-01-01), Furuta
patent: 4494443 (1985-01-01), Tsubouchi
patent: 4643075 (1987-02-01), Wagner
patent: 4862787 (1989-09-01), Suzuki et al.
patent: 4882980 (1989-11-01), Arino et al.

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