Brakes – Wheel – Transversely movable
Patent
1991-08-02
1992-11-03
Butler, Douglas C.
Brakes
Wheel
Transversely movable
188216, 188328, 188341, F16D 5126
Patent
active
051599988
ABSTRACT:
A drum brake is provided of the leading-trailing shoe type in which a single piece spring installed as a part of the assembly holds down the brake shoe assemblies against the backing plate and also retracts the shoes after brake actuation. The single piece spring also retains the lower ends of the shoes against the anchor plate. This arrangement eliminates the need for separate shoe hold-down springs and separate upper and lower return springs, resulting in a significant reduction in parts and labor for assembly.
REFERENCES:
patent: 2642159 (1953-06-01), House
patent: 3095950 (1963-07-01), Scheel
patent: 3203512 (1965-08-01), Lepelletier
patent: 4130189 (1978-12-01), Katagiri et al.
patent: 4494633 (1985-01-01), Idesawa
patent: 4762209 (1988-08-01), Copp
patent: 4993525 (1991-02-01), Hyde
patent: 4998602 (1991-03-01), Yamamoto
Brooks, Sr. Frank W.
Copp Douglas M.
Fanelli Michael W.
Holliday Gary G.
Hyde Robert W.
Butler Douglas C.
General Motors Corporation
Helms Ernest E.
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