Hydraulic brake actuator

Details Hydraulic brake actuator Hydraulic brake actuator

1976-05-28

1977-12-20

Schwadron, Martin P.

Brakes

Wheel

Axially movable brake element or housing therefor

74107, F16D 5502

Patent

active

040636216

ABSTRACT:
A hydraulic brake actuator having a piston slidable in a cylinder for hydraulic service brake operation also incorporates a mechanical linkage for handbrake operation. The mechanical linkage comprises a cranked shaft journalled in a closed end wall of the cylinder, a linearly displaceable peg and a strut interconnecting the cranked shaft and peg such that rotation of the cranked shaft causes linear displacement of the peg. The cranked part of the shaft of the strut and the peg are preferably contained wholly within a hydraulic working chamber defined by the piston and cylinder so that when the service brake and handbrake are applied simultaneously, movement of the mechanical components does not cause a change in the volume of the chamber and prevailing hydraulic fluid pressure will not therefore affect such movement.

REFERENCES:
patent: 3424279 (1969-01-01), Frigger
patent: 3443670 (1969-05-01), Margetts
patent: 3482665 (1969-12-01), Meier
patent: 3507367 (1970-04-01), Brown
patent: 3647031 (1972-03-01), Burnett
patent: 3665873 (1972-05-01), Wittler
patent: 3783981 (1974-01-01), Burgdorf

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