US4037010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic composites with in-situ formed fibers and extensible matrix
Assignee: Raytheon Co
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Filing: 1976-08-02
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Granted: 1977-07-19
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Expires: 1996-08-02
Abstract
Abstract Composite materials are disclosed which consist of extensible polymer matrices in combination with three-dimensionally structured, interconnected fibrous masses which are formed "in situ". These composites exhibit novel mechanical characteristics which are distinctly different from those exhibited by conventional fiber-filled elastomers.
Inventors
- 👤 Leon Brian Keller
- 👤 Raymond E. Kelchner, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:50
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/0042; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/12; B29K; B29K2105/00; B29K2105/06; B29K2105/12; B29K2105/128; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10S428/909; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2905; Y10T428/2907; Y10T442/00; Y10T442/20; Y10T442/273; Y10T442/2861; Y10T442/291; Y10T442/2918
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
37 words
A composite material comprising a coherent, three-dimensional network of structurally interconnected polymeric fibers impregnated with an extensible resin matrix having a pliable resilient nature, which exhibits the propensity for increasing strength and toughness with repeated load cycling.
Claim 2
Dependent Claim
37 words
A composite material comprising a coherent, three-dimensional network of structurally interconnected polymeric fibers impregnated with an extensible resin matrix having a pliable resilient nature, which exhibits the propensity for increasing strength and toughness with repeated load cycling.
Claim 3
Dependent Claim
14 words
The material of claim 1 wherein said fibrous masses are formed from linear polyalkenes.
Claim 4
Dependent Claim
29 words
The material of claim 1 wherein said fibrous masses are formed from polymers taken from the group consisting of isotactic polypropylene, polyethylene, isotactic poly(4-methylpentene-1), isotactic poly(butene-1), and mixture thereof.
Claim 5
Dependent Claim
28 words
The material of claim 3 wherein said resin matrix is selected from the group consisting of curable urethanes, silicones, aliphatic rubbers, low fusion temperature plastisols and flexible epoxies.
Claim 6
Dependent Claim
21 words
The material of claim 4 wherein said fibrous mass is a polypropylene fiber and said resin matrix is a silicone resin.
Claim 7
Dependent Claim
22 words
The material of claim 4 wherein said fibrous mass is a polypropylene fiber and said resin matrix is a flexible epoxy resin.
Claim 8
Dependent Claim
24 words
The material of claim 5 wherein said silicone is comprised of a vinyl terminated dimethyl siloxane, a silane curing agent and a platinum catalyst.
Claim 9
Dependent Claim
22 words
The material of claim 6 wherein said flexible epoxy comprises a copolymer of bisphenol A and glycerol with an anhydride curing agent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |