US4098951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for eliminating squeal in disc brakes
Assignee: Interpolymer Corp
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Filing: 1976-09-20
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Granted: 1978-07-04
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Expires: 1996-09-20
Abstract
Abstract Polymeric materials are disclosed which are suitable for application to one or more metal surfaces in disc brakes to eliminate brake squeak therefrom. The preferred polymer comprises a high molecular weight acrylic copolymer containing sites for crosslinking on the main polymer chain.
Inventors
- 👤 Norwin W. Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:29
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/025; F16D65/00; F16D65/0006; F16D65/02; F16D65/12; F16D65/127; C; C10; C10M; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/12; C10M2213/00; C10M2213/04; C10M2213/06; C10M2217/00; C10M2217/02; C10M2217/026; C10M2217/04; C10M2217/042; C10M2217/043; C10N; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/015; C10N2050/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
88 words
A method for reducing squeak in disc brakes caused by contact between the metal surfaces of the friction pad and brake support comprising applying a high molecular weight, thermally stable polymer composition to at least one of said metal surfaces in an amount sufficient to eliminate squeak, said polymer composition comprising a high molecular weight acrylic copolymer containing at least about 50% of a C 1 -C 8 ester of acrylic acid and at least about 1% of a monomer providing crosslinkable sites on the main polymer chain.
Claim 2
Independent Claim
88 words
A method for reducing squeak in disc brakes caused by contact between the metal surfaces of the friction pad and brake support comprising applying a high molecular weight, thermally stable polymer composition to at least one of said metal surfaces in an amount sufficient to eliminate squeak, said polymer composition comprising a high molecular weight acrylic copolymer containing at least about 50% of a C 1 -C 8 ester of acrylic acid and at least about 1% of a monomer providing crosslinkable sites on the main polymer chain.
Claim 3
Dependent Claim
25 words
A method of claim 1 wherein said monomer providing crosslinkable sites is a monomer containing vinyl unsaturation and pendant functional groups which provide crosslinkable sites.
Claim 4
Dependent Claim
13 words
A method of claim 2 wherein said monomer providing crosslinkable sites comprises methylolacrylamide.
Claim 5
Dependent Claim
26 words
A method of claim 1 wherein said high molecular weight, thermally stable polymer composition is applied to the metal surface of the disc brake friction pad.
References Cited (Backward Citations)
US3503918A
Cited
US3455416A
Cited
DE2028815A1
Cited
US3722634A
Cited
DE2151687A1
Cited
DE2250742A1
Cited
DE2427040A1
Cited
US3998301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-03 | 1982-01-02 | 1982-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-03 | 1986-01-02 | 1986-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-03 | 1990-01-02 | 1990-07-04 | $7700.00 | Window Closed / Lapsed |