US4980564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation barrier fabric
Assignee: SOUTHERN MANUFACTURING Inc
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Filing: 1989-12-27
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Granted: 1990-12-25
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Expires: 2009-12-27
Abstract
Abstract A composite for blocking electromagnetic radiation includes a central layer of wire reinforced glass fabric, an outer exposure coating of materials which absorb the radiation, and an inner layer of metal.
Inventors
- 👤 George B. Steelmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:30
CPC Classifications
G; G21; G21F; G21F1/00; G21F1/12; G21F1/125; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/259; Y10T442/2607
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
63 words
A radiation barrier material comprising a central layer comprising a composite fabric of heat resistant fibers and metal wire, an outer layer bonded to said fabric comprising solids which are substantially absorptive to said radiation, and an inner layer bonded to said central layer comprising a continuous metallic sheet, said wire and metallic sheet providing conductive paths for radiation absorbed by said material.
Claim 2
Dependent Claim
63 words
A radiation barrier material comprising a central layer comprising a composite fabric of heat resistant fibers and metal wire, an outer layer bonded to said fabric comprising solids which are substantially absorptive to said radiation, and an inner layer bonded to said central layer comprising a continuous metallic sheet, said wire and metallic sheet providing conductive paths for radiation absorbed by said material.
Claim 3
Dependent Claim
26 words
The radiation barrier material of claim 1 comprising a pair of said barrier fabrics bonded together with the inner layers of said fabric facing each other.
Claim 4
Dependent Claim
30 words
The radiation barrier material of claim 1 wherein the heat resistant fibers of said composite fabric are wrapped around said metal wire in the form of a wire inserted yarn.
Claim 5
Dependent Claim
20 words
The radiation barrier material of claim 1 wherein said solids are disposed in said outer layer in a polymeric matrix.
Claim 6
Dependent Claim
13 words
The radiation barrier material of claim 1 wherein said metallic sheet is aluminum.
Claim 7
Dependent Claim
16 words
The radiation barrier material of claim 1 wherein said solids comprise metal oxides, carbonates and sulfates.
Claim 8
Dependent Claim
13 words
The radiation barrier material of claim 1 wherein said solids comprise metal flakes.
Claim 9
Dependent Claim
15 words
The radiation barrier material of claim 1 wherein said heat resistant fibers comprise glass fibers.
References Cited (Backward Citations)
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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) | 1993-12-24 | 1994-06-25 | 1994-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-24 | 1998-06-25 | 1998-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-24 | 2002-06-25 | 2002-12-25 | $7700.00 | Window Closed / Lapsed |