Sound dampener for disk brakes
OwnerEverett W. Harrisoninventor
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Abstract
A sound dampener for a disk brake assembly comprising a composite of vinyl ester and glass. Preferably, the composite is comprised of a region of woven glass sandwiched between a layer of vinyl ester and another layer of vinyl ester in which random strands of glass are embedded. The composite dampens the vibrations induced by the friction associated with the disk brake assembly to eliminate brake squeal. The composite also has low rates of thermal conductivity and thermal expansion which aid in reducing break squeal.
Claims18
In a disk brake assembly having a friction pad mounted on one side of a backing plate and a sound dampening element disposed on another side of the backing plate in a position to be engaged by a piston to urge the friction pad against a rotating disk, the improvement wherein the dampening element comprises:
- a thermally stable, nonmetallic composition surrounding a zone of random glass fibers and a layer of woven glass.
A method of making a vibration dampening element for disk brakes comprising:
- providing a sheet of woven glass;
- applying a nonmetallic composition having a zone of random glass fibers to the sheet;
- compressing the nonmetallic composition against the sheet;
- and
- heating the nonmetallic composition and the sheet sufficiently to cause the nonmetallic composition to flow into and around the interstices of the woven glass.
Dependencies are inferred from the claim text.