Brakes – Wheel – Axially movable brake element or housing therefor
Patent
1992-02-07
1996-05-21
Ballato, Josie
Brakes
Wheel
Axially movable brake element or housing therefor
188205A, 188250E, F16D 6538
Patent
active
055180884
ABSTRACT:
A shim structure for sound dampening brake squeal noise in a disc brake apparatus, when installed on the piston and/or caliper engaging surface of a steel backing plate of the friction pad structure, is composed of a sheet of aluminum and a continuous membrane of a high temperature acrylic adhesive on one surface only of the sheet of aluminum. The sheet of aluminum has a thickness large enough to provide, in combination with the membrane of high temperature adhesive, effective sound dampening of the brake squeal noise. In a specific embodiment of the invention, the silhouette periphery of the shim structure is shaped to closely match the silhouettes of a number of related but differently configured friction pad structures. In this embodiment the sheet of aluminum is partially cut through in certain locations to permit the areas of those locations to be popped out by underlying and upwardly projecting protuberances in the surface of the steel backing plate when the shim structure is pressed into engagement with the surface during installation. The pop-out areas permit one basic shim structure to be fitted to a plurality of friction pad structures having varied surface configurations.
REFERENCES:
patent: 2733474 (1956-02-01), Capitani
patent: 2819032 (1958-01-01), Detrie et al.
patent: 3359773 (1967-12-01), Stuchbery
patent: 3885651 (1975-05-01), Odier
patent: 3918555 (1975-11-01), Rath
patent: 4093045 (1978-06-01), Kawamura
patent: 4225021 (1980-09-01), Kawamura et al.
patent: 4603760 (1986-08-01), Myers
Specification sheets "Scotch Laminating Adhesive" 3M (8 pages).
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