Drum brake with rack and pinion drive

Details Drum brake with rack and pinion drive Drum brake with rack and pinion drive

1998-11-30

2000-09-19

Schwartz, Chris

Brakes

Wheel

Transversely movable

188325, F16D 5100

Patent

active

061198226

ABSTRACT:
A drum brake assembly as provided with a rack and pinion actuator. The rack and pinion actuator includes a pinion gear driving a pair of racks, with the racks driving the brake shoes into engagement with the brake drum. The pinion gear is provided with an adjustment thread which transmits rotation to an adjustment member. The adjustment member monitors the amount of rotation of the pinion gear during actuation, and a mechanism drives the adjustment member and the pinion gear back to its non-actuated position after completion of the braking cycle. The mechanism limits the amount of return movement of the pinion gear as necessary to provide adjustment of the brake stroke.

REFERENCES:
patent: 1805190 (1931-05-01), Semmes
patent: 1875571 (1932-09-01), Delahaye
patent: 4850459 (1989-07-01), Johannesen et al.
patent: 5913390 (1999-06-01), Hostetler

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