Electric drum brake

Brakes – Operators – Electric and mechanical

Patent

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Details

188158, B60T 1374

Patent

active

053100263

ABSTRACT:
A drum brake is provided which in a preferred embodiment includes a backing plate having an anchor at a first end, first and second brake shoes pivotally mounted with respect to the anchor, a nonrotative nut mounted for linear motion with respect to the backing plate, a first apply lever pivotally mounted with respect to the nut and with respect to the first brake shoe, a second apply lever pivotally mounted with respect to the backing plate and with respect to the secondary brake shoe, a first strut pivotally mounted with the first and second brake shoes, a power screw threadably engaged with the nut for translating the nut, and an electric motor torsionally associated with the power screw for turning the same.

REFERENCES:
patent: 4678067 (1987-07-01), Thompson
patent: 5000297 (1991-03-01), Shaw et al.
patent: 5150773 (1992-09-01), Hickey et al.
patent: 5152588 (1992-10-01), Bright et al.
patent: 5219049 (1993-06-01), Unterborn

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