Parking brake controller with slower actuation in the event of a

Details Parking brake controller with slower actuation in the event of a Parking brake controller with slower actuation in the event of a

1992-01-15

1994-02-22

Oberleitner, Robert J.

Fluid-pressure and analogous brake systems

Releasing

Motor

303 841, B60T 700

Patent

active

052881407

ABSTRACT:
A hydraulic parking brake controller for a motor vehicle for controlling the operation of a parking brake of the transmission output-shaft mounted type in response to the operating unit. The controller comprises a primary control and a secondary control. The primary control actuates and releases the parking brake at a first rate. The secondary control actuates the parking brake at a second rate slower than the first rate in an instance in which the parking brake is in the released state and the operation unit malfunctions. If a circuit break should occur in the operation unit while the parking brake is in the released state, the secondary control actuates the parking brake at the second rate. The parking brake is thus not actuated suddenly in the event of an abrupt wire disconnection, such that the braking action is dampened.

REFERENCES:
patent: 3610700 (1971-10-01), Beck et al.
patent: 3999462 (1976-12-01), Chamberlain
patent: 4057297 (1977-11-01), Beck et al.

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