Patent US4318955A successfully refreshed from Google Patents.
US4318955A
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Method for making a carbonic friction product
Assignee: Individual
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Filing: 1980-05-19
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Granted: 1982-03-09
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Expires: 2000-05-19
Abstract
Abstract A method for making a carbon friction product comprises laying a reinforcing support, impregnating it with a binder, heat treating and subsequent machining to form a desired product which is then saturated with pyrocarbon and subjected to heat treatment at graphitization temperature. The reinforcing support is formed by piling up a pack of alternating layers of interwoven carbon fibers and layers of individual elementary fibers, the individual elementary fibers being oriented in such a manner as to partially penetrate the layers of interwoven fibers.
Inventors
- 👤 Valery V. Kulakov
- 👤 Valentin P. Judin
- 👤 Antonina I. Pavlova
- 👤 Anatoly M. Zlatkis
- 👤 Georgy N. Bagrov
- 👤 Ivan I. Zverev
- 👤 Iosif I. Khazanov
- 👤 Alexei V. Suvorov
- 👤 Alexei A. Bobrinsky
- 👤 Vladimir A. Pasynkov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:44
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/24; C; C04; C04B; C04B35/00; C04B35/71; C04B35/78; C04B35/80; C04B35/83; F; F16; F16D; F16D65/00; F16D65/02; F16D65/12; F16D65/125; F16D65/126; F16D69/00; F16D69/02; F16D69/023; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/30; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/348; Y10T442/3496
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
A method for making a carbon friction material comprising: providing a reinforcing support containing a series of layers of interwoven carbon fibers wherein each of said layers are partially penetrated by a series of oriented individual fibers, said penetration being accomplished by forcing a fluid, containing the individual fibers, sequentially through each layer of interwoven carbon fibers; impregnating said reinforcing support with a binder; subjecting said reinforcing support to a heat treatment to obtain a blank; machining said blank for obtaining a desired product, with subsequent saturation of the resultant product with pyrocarbon and heat treatment thereof at a graphitization temperature.
Claim 2
Independent Claim
101 words
A method for making a carbon friction material comprising: providing a reinforcing support containing a series of layers of interwoven carbon fibers wherein each of said layers are partially penetrated by a series of oriented individual fibers, said penetration being accomplished by forcing a fluid, containing the individual fibers, sequentially through each layer of interwoven carbon fibers; impregnating said reinforcing support with a binder; subjecting said reinforcing support to a heat treatment to obtain a blank; machining said blank for obtaining a desired product, with subsequent saturation of the resultant product with pyrocarbon and heat treatment thereof at a graphitization temperature.
Claim 3
Dependent Claim
31 words
A method according to claim 1, wherein said pack piling is effected by forcing an aqueous suspension containing said elementary individual fibers sequentially through each layer of said interwoven carbon fibers.
Claim 4
Dependent Claim
30 words
A method according to claim 1, wherein said pack piling is effected by forcing an air stream containing said individual elementary fibers sequentially through each layer of said interwoven fibers.
Claim 5
Dependent Claim
9 words
A product formed by the method of claim 1.
Claim 6
Dependent Claim
19 words
A method according to claim 4, wherein the fluid is selected from the group consisting of water and air.
Claim 7
Independent Claim
30 words
A method according to any of claims 2, 3, or 1 wherein the impregnation of the reinforcing support with a binder occurs at the same time as the fiber penetration.
References Cited (Backward Citations)
GB923050A
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GB1423240A
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US3991248A
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US3956548A
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GB2002685B
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GB2003845A
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GB2004855A
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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) | 1985-03-08 | 1985-09-07 | 1986-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-08 | 1989-09-07 | 1990-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-08 | 1993-09-07 | 1994-03-09 | $7700.00 | Window Closed / Lapsed |