Brakes – Wheel – Transversely movable
Patent
1992-07-08
1995-03-28
Butler, Douglas C.
Brakes
Wheel
Transversely movable
188216, 188331, 188340, 188341, F16D 6509
Patent
active
054008824
ABSTRACT:
In a duo-servo drum brake comprising a mechanical expander adjacent a thrust bearing for supporting the brake shoes, with the expander including an operating lever to which is transmitted the operating force of an actuator substantially in a direction tangential to the edge of the brake drum. The brake shoe is movable through an expander in the direction of the operating force and connected to a thrust bearing through a prestressed spring. The spring force of the prestressed spring opposes the expanding force of the expander and exceeds the operating force required for placing the brake shoes in abutment with the brake drum on the operating lever.
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patent: 5044475 (1991-09-01), Clark
patent: 5058713 (1991-10-01), Evans
patent: 5180037 (1993-01-01), Evans
Czich Erhard
Goebel Harald
Weiler Rolf
Alfred Teves GmbH
Butler Douglas C.
Lewis J. Gordon
Seitter Robert P.
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