Apparatus and method of automotive brake with booster piston

Details Apparatus and method of automotive brake with booster piston Apparatus and method of automotive brake with booster piston

1989-05-17

1991-06-18

Graham, Matthew C.

Brakes

Wheel

Axially movable brake element or housing therefor

188 725, 188346, F16D 5514

Patent

active

050242989

ABSTRACT:
A vehicle wheel braking system activated by a master cylinder is provided including a rotor connected to a vehicle wheel, a bracket having a position fixed with respect to the rotor, and a caliper slidably mounted with respect to the bracket in a plane generally perpendicular to the rotor rotational axis. A first hydraulic cylinder activated by the master cylinder is connected with the caliper. The first hydraulic cylinder has a piston for frictionally engaging the rotor to retrain rotation thereof. A second hydraulic cylinder is positioned between the caliper and the bracket. The second hydraulic cylinder has a piston that is pressurized by a reaction force experienced between the caliper and the bracket when the first hydraulic cylinder is activated. A third hydraulic cylinder is fluidly connected with the second hydraulic cylinder to receive pressure therefrom. The third hydraulic cylinder has a piston to frictionally engage the rotor to retrain rotation thereof.

REFERENCES:
patent: 3173517 (1965-03-01), Powlas
patent: 3335821 (1967-08-01), Shew
patent: 3750857 (1973-08-01), Marschall et al.
patent: 3897858 (1975-08-01), Toshida et al.
patent: 4505363 (1985-03-01), Herbulot et al.
patent: 4685541 (1987-08-01), Price et al.
patent: 4795003 (1989-01-01), Colgate

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