Brakes – Operators – Electric and mechanical
Patent
1992-10-19
1994-05-10
Oberleitner, Robert J.
Brakes
Operators
Electric and mechanical
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
Hallinan Linda L.
Newton Jerry L.
Schenk Donald E.
Shaw Schuyler S.
General Motors Corporation
Helms Ernest E.
Oberleitner Robert J.
Schwartz Chris
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