Machine element or mechanism – Control lever and linkage systems – Foot operated
Patent
1997-01-21
1999-03-16
Marmor, Charles A.
Machine element or mechanism
Control lever and linkage systems
Foot operated
74560, G05G 114
Patent
active
058816054
ABSTRACT:
A parking brake actuator for applying and releasing a cable-operated vehicle parking brake includes an operating lever pivotally mounted on a mounting bracket for movement between brake-released and a plurality of brake-applied positions. The operating lever is a unitary molding made of a glass-filled thermoplastic and has an integral footpad. A metal insert which mounts the cable end, includes a sector gear, that is secured to the operating lever by rivets and engages a pinion which is pivoted to the mounting bracket. The operating lever has a raised drive lug that is received in a mating drive aperture in the insert and transfers brake-apply forces from the operating lever to the sector. A one-way clutch normally permits the pinion to rotate freely when the operating lever is operated to apply the parking brake, but prevents reverse rotation of the pinion to maintain the parking brake applied. A clutch release is operable to disable the one-way clutch and permit reverse rotation of the pinion to release the parking brake and allow the operating lever to return to released position. The plastic operating lever only experiences the high brake-apply forces during brake-apply motion. When the parking brake is set, the operating lever is isolated from the cable load path.
REFERENCES:
patent: 3236120 (1966-02-01), Fender
patent: 3236121 (1966-02-01), Gdowik et al.
patent: 5211072 (1993-05-01), Barlas et al.
patent: 5309786 (1994-05-01), Pare et al.
patent: 5533421 (1996-07-01), Damerow et al.
Doolittle Miles George
Gurney Anthony R.
O'Rourke Sean
Battista Mary Ann
Dura Automotive Systems
Greenlee David A.
Marmor Charles A.
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