US4259397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake lining material
Assignee: Nisshinbo Holdings Inc
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Filing: 1979-07-09
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Granted: 1981-03-31
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Expires: 1999-07-09
Abstract
Abstract A brake pad or lining comprising a binder and a peroxidized fiber derived from an acrylic fiber said peroxidized fiber containing at least about 5 wt % bonded oxygen. The material has a relatively high coefficient of friction as well as good wear resistance and fade resistance and can be used in place of a conventional asbestos brake pad or lining.
Inventors
- 👤 Kazuhisa Saito
- 👤 Fumio Miyatake
- 👤 Kunio Shibata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:56
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/025; F16D69/026; C; C08; C08L; C08L61/00; C08L61/04; C08L61/06; F16D69/023; C08L33/00; C08L33/18; C08L33/20; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249949; Y10T428/27; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/30
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
47 words
A brake lining comprising a binder and a fiber constituent comprising a preoxidized fiber derived from acrylic fibers and containing at least about 5 wt% of bonded oxygen in combination with carbon fiber, said brake lining exhibiting an excellent coefficient of friction and wear at high temperature.
Claim 2
Dependent Claim
47 words
A brake lining comprising a binder and a fiber constituent comprising a preoxidized fiber derived from acrylic fibers and containing at least about 5 wt% of bonded oxygen in combination with carbon fiber, said brake lining exhibiting an excellent coefficient of friction and wear at high temperature.
Claim 3
Dependent Claim
26 words
The brake lining of claim 1, wherein the bonded oxygen content of said preoxidized fiber is in the range of from about 5 to 15 wt%.
Claim 4
Dependent Claim
31 words
The brake lining of claim 1, wherein about 50 to 98 wt% of said preoxidized fiber and about 2 to 20 wt% of carbon fiber are present as the fiber constituent.
Claim 5
Dependent Claim
19 words
The brake lining of claims 1, 2, or 3, wherein a phenol formaldehyde resin is used as a binder.
Claim 6
Dependent Claim
13 words
The brake lining of claims 1, 2, or 3 additionally comprising glass fibers.
Claim 7
Dependent Claim
13 words
The brake lining of claims 1, 2, or 3 additionally comprising steel wool.
Claim 8
Dependent Claim
14 words
The brake lining of claims 1, 2, or 3 additionally comprising phenol-formaldehyde resin fibers.
Claim 9
Dependent Claim
18 words
The brake lining of claim 3, wherein about 5 to 50 wt% of said carbon fiber is present.
Claim 10
Dependent Claim
18 words
The brake lining of claim 3, wherein about 10 to 50 wt% of said carbon fiber is present.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |