US4748079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite materials constituted by a matrix in resin coke carbon, reinforced with pyrolytic carbon-coated refractory fibers
Assignee: Safran Aircraft Engines SAS
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Filing: 1985-10-16
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Granted: 1988-05-31
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Expires: 2005-10-16
Abstract
Abstract The present invention relates to a composite material, of the type comprising a matrix in resin coke carbon and a refractory fibrous reinforcement, wherein the elementary fibers composing the fibrous reinforcement are coated before use with a layer of pyrolytic carbon the thickness of which layer can vary between 0.01 μm and 1.0 μm. The invention further relates to a method for preparing said material.
Inventors
- 👤 Jacques Thebault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:23
CPC Classifications
D; D01; D01F; D01F11/00; D01F11/10; D01F11/12; D01F11/125; C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/524; C04B35/56; C04B35/565; C04B35/622; C04B35/626; C04B35/628; C04B35/62844; C04B35/62857; C04B35/62873; C04B35/62884; C04B35/62897; C04B35/71; C04B35/78; C04B35/80; C04B35/83; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/48; C04B2235/50; C04B2235/52; C04B2235/5208; C04B2235/5216; C04B2235/524; C04B2235/5244; C04B2235/60; C04B2235/616; C04B2235/70; C04B2235/80; C04B2235/96; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/249928; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/2933; Y10T428/2938; Y10T428/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
65 words
A composite material comprising a coke matrix and a plurality of refractory reinforcement fibers disposed therein, each fiber being individually coated with a pyrolytic carbon layer by a chemical vapor deposition process, said matrix making a bond with and being disposed around each individual coated fiber, said coating layer having such properties as to reduce the bonding forces between the coated fibers and the matrix.
Claim 2
Dependent Claim
65 words
A composite material comprising a coke matrix and a plurality of refractory reinforcement fibers disposed therein, each fiber being individually coated with a pyrolytic carbon layer by a chemical vapor deposition process, said matrix making a bond with and being disposed around each individual coated fiber, said coating layer having such properties as to reduce the bonding forces between the coated fibers and the matrix.
Claim 3
Dependent Claim
25 words
A composite material as in claim 1 wherein said coating layer has a thickness not less than 0.01 micrometer but not greater than one micrometer.
Claim 4
Dependent Claim
59 words
A composite material comprising a coke matrix and a plurality of refractory reinforcement fibers disposed therein, each fiber being individually coated with a pyrolytic carbon layer, said matrix making a bond with and being disposed around each individual coated fiber, said coating layer having such properties as to reduce the bonding forces between the coated fibers and the matrix.
Claim 5
Dependent Claim
59 words
A composite material comprising a coke matrix and a plurality of refractory reinforcement fibers disposed therein, each fiber being individually coated with a pyrolytic carbon layer, said matrix making a bond with and being disposed around each individual coated fiber, said coating layer having such properties as to reduce the bonding forces between the coated fibers and the matrix.
Claim 6
Dependent Claim
25 words
A composite material as in claim 3 wherein said coating layer has a thickness not less than 0.01 micrometer but not more than one micrometer.
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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) | 1991-05-31 | 1991-11-30 | 1992-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-31 | 1995-11-30 | 1996-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-31 | 1999-11-30 | 2000-05-31 | $7700.00 | Window Closed / Lapsed |