Brake actuator

Details Brake actuator Brake actuator

1977-07-15

1978-09-12

Reger, Duane A.

Brakes

Position adjusters

Slack

188203, F16D 6556

Patent

active

041130707

ABSTRACT:
A brake actuator comprising: a piston-cylinder arrangement having a piston member and a cylinder member arranged for sliding motion relative to one another by fluid pressure medium; an elongate plunger longitudinally movable by one said member and comprising two mutually screw-threaded parts arranged to vary the effective or overall length of the plunger upon relative rotation of said two parts; a resilient spring torque motor for effecting said relative rotation, the torque motor being coupled to one of the parts for driving that part relative to the other part; and rotation preventing means comprising friction clutch or brake members coupled to said one part and releasable when the stroke of the plunger exceeds a pre-set or predetermined amount to permit torque transmission from the torque motor to said one part in a direction tending to increase the effective or overall length of the plunger.

REFERENCES:
patent: 2160859 (1939-06-01), Grayson
patent: 3432011 (1969-03-01), Altherr
patent: 4005767 (1977-02-01), Farello

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