Brakes – Operators – Electric and mechanical
Patent
1989-05-17
1991-03-19
Graham, Matthew C.
Brakes
Operators
Electric and mechanical
188162, 188325, B60T 1374
Patent
active
050002970
ABSTRACT:
An automotive vehicle drum brake is provided including a brake drum connected to a wheel. A backing plate is connected to the vehicle and at least one brake shoe is connected with the backing plate and is pivotally mounted with respect thereto. A non-rotative nut is mounted for linear motion with respect to the backing plate and is pivotally connected with respect to the brake shoe. A power screw is threadably engaged with the nut. The power screw is also mounted to the backing plate. An electric motor is torsionally connected with the power screw to turn the same to actuate the brakes.
REFERENCES:
patent: 1896209 (1933-02-01), Vitale et al.
patent: 1990971 (1935-12-01), Apple
patent: 3659683 (1972-05-01), Betzing
patent: 4295687 (1981-10-01), Becker et al.
patent: 4336867 (1982-06-01), Woo
patent: 4392558 (1983-07-01), Heibel
patent: 4762209 (1988-08-01), Copp
patent: 4784244 (1988-11-01), Carre et al.
patent: 4850459 (1989-07-01), Johannesen et al.
DeHoff Edward J.
Hallinan Linda L.
Hammersmith Robert J.
Kade Alexander
Schenk Donald E.
General Motors Corporation
Graham Matthew C.
Helms Ernest E.
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