Parking brake actuator with variable ratios

Details Parking brake actuator with variable ratios Parking brake actuator with variable ratios

1992-08-26

1994-01-25

Herrmann, Allan D.

Machine element or mechanism

Control lever and linkage systems

Variable output force

74529, 74540, G05G 704, G05G 524

Patent

active

052807347

ABSTRACT:
A foot operated actuator is provided for actuating a cable operated vehicle parking brake. The actuator comprises an input lever pivotally mounted on a support for movement to a plurality of brake applied positions where it is held by a pawl-and-sector latch. The lever is standardized and is adapted to receive a plurality of different interchangeable sectors. The sectors have outer peripheral cable-receiving grooves which can have a variety of outer profiles which determine the constant or variable output/input ratio of output cable travel per unit of input lever travel. The lever has a hub having an arcuate surface which receives a mating arcuate surface on the sectors. The sectors each have a radially inwardly depending lobed tab that is axially received in an axially open mating slot on the hub to lock the sectors to the hub.

REFERENCES:
patent: 2943511 (1960-07-01), Johnstone
patent: 4391159 (1983-07-01), Sellmeyer
patent: 4604913 (1986-08-01), Kyonomine
patent: 5054333 (1991-10-01), Scott et al.

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