Patent US4808465A successfully refreshed from Google Patents.
US4808465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite material
Assignee: Individual
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Filing: 1987-11-19
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Granted: 1989-02-28
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Expires: 2007-11-19
Abstract
Abstract The invention provides a self-supporting flame resistant composite material comprising at least one layer (1) of lead material and at least one layer (2) of flame resistant fibrous material, the layers (1,2) having been bonded together, e.g., mechanically as by needling, to provide a self-supporting structure.
Inventors
- 👤 Jeffrey A. Vane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:55
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/088; B32B5/02; B32B5/022; B32B5/024; B32B5/026; B32B5/06; B32B7/00; B32B7/04; B32B7/12; D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4209; D04H1/4218; D04H1/4234; D04H1/4374; D04H1/44; D04H1/46; D04H1/58; D04H1/587; D04H1/64; D04H1/68; D04H13/00; B29K; B29K2705/00; B29K2705/04; B32B2255/00; B32B2255/20; B32B2255/205; B32B2260/00; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/10; B32B2262/101; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2367/00; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B2001/7691; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/24999; Y10T428/30; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T442/00; Y10T442/60; Y10T442/647; Y10T442/648; Y10T442/651; Y10T442/652; Y10T442/682; Y10T442/684; Y10T442/687; Y10T442/696
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
62 words
A self-supporting flame resistant composite material comprising at least one layer of lead material and at least one layer of flame resistant fibrous material, the layers having been bonded together to provide a self-supporting structure said lead material comprising a layer or mat of non-woven lead strands and said flame resistant fibrous material comprising a layer or mat of non-woven glass fibers.
Claim 2
Dependent Claim
62 words
A self-supporting flame resistant composite material comprising at least one layer of lead material and at least one layer of flame resistant fibrous material, the layers having been bonded together to provide a self-supporting structure said lead material comprising a layer or mat of non-woven lead strands and said flame resistant fibrous material comprising a layer or mat of non-woven glass fibers.
Claim 3
Dependent Claim
20 words
A composite material according to claim 1, wherein said layer of lead material is sandwiched between layers of fibrous material.
Claim 4
Dependent Claim
14 words
A composite material according to claim 1, wherein said layers are adhesively bonded together.
Claim 5
Dependent Claim
14 words
A composite material according to claim 1, wherein said layers are mechanically bonded together.
Claim 6
Dependent Claim
16 words
A composite material according to claim 4, wherein said layers are mechanically bonded together by needling.
Claim 7
Dependent Claim
20 words
A composite material according to claim 1, when provided with a coating or finish on at least one surface thereof.
Claim 8
Dependent Claim
16 words
A composite material according to claim 6, wherein said coating or finish is a metal coating.
Claim 9
Dependent Claim
28 words
A composite material according to claim 6, wherein said coating or finish is selected from the group comprising a layer or coating of plastics, textile or metal foil.
Claim 10
Dependent Claim
17 words
A composite material according to claim 6, wherein said layer or coating is a spray-on silicone foam.
Claim 11
Dependent Claim
49 words
A reinforced plastics article comprising a composite material consisting of at least one layer of lead material and at least one layer of flame resistant fibrous material, the layers having been bonded together to provide a self-supporting structure, said composite material having been impregnated with a synthetic resinous material.
Claim 12
Dependent Claim
49 words
A reinforced plastics article comprising a composite material consisting of at least one layer of lead material and at least one layer of flame resistant fibrous material, the layers having been bonded together to provide a self-supporting structure, said composite material having been impregnated with a synthetic resinous material.
Claim 13
Dependent Claim
9 words
A plastics article according to claim 10, when moulded.
Claim 14
Dependent Claim
43 words
A reinforced plastics article according to claim 10, wherein said composite material comprises at least one layer or mat of non-woven lead strands and at least one layer or mat of non-woven glass fibres, said layers having been mechanically bonded together by needling.
Claim 15
Dependent Claim
16 words
A plastics article according to claim 10, wherein the synthetic resinous material is a polyester resin.
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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) | 1992-02-28 | 1992-08-29 | 1993-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-28 | 1996-08-29 | 1997-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-28 | 2000-08-29 | 2001-02-28 | $7700.00 | Window Closed / Lapsed |