US4975316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-retardant barrier structure
Assignee: Individual
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Filing: 1989-03-16
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Granted: 1990-12-04
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Expires: 2009-03-16
Abstract
Abstract A fire-retardant laminated plastic material which includes a woven barrier layer of high-density polyethylene sandwiched between outer layers of low-density polyethylene material in which a polymer of antimony trioxide is incorporated in the outer layers. Additional outer layers may be laminated to the structure to serve as a carrier of pigments or to increase abrasion resistance of the structure.
Inventors
- 👤 John C. Romanowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:38
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/18; B32B27/20; A; A41; A41D; A41D31/00; A41D31/04; A41D31/08; A41D31/085; B32B27/06; B32B27/08; B32B27/12; B32B27/30; B32B27/32; B32B5/00; B32B5/02; B32B5/024; B32B7/00; B32B7/04; B32B7/12; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2307/70; B32B2307/712; B32B2307/724; B32B2307/7242; B32B2307/726; B32B2307/7265; B32B2323/00; B32B2323/04; B32B2323/043; B32B2323/046; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/164; Y10T442/169
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
61 words
A fire-retardant barrier fabric comprising a first component of polyvinyl/polyvinylidene film which includes outer layers of low-density polyethylene containing fire-retardant material, said first component being laminated to a second component which comprises a layer of scrim woven from high-density polyethylene material sandwiched between two layers of low-density polyethylene material, all said polyethylene material in said second component also containing fire-retardant material.
Claim 2
Dependent Claim
61 words
A fire-retardant barrier fabric comprising a first component of polyvinyl/polyvinylidene film which includes outer layers of low-density polyethylene containing fire-retardant material, said first component being laminated to a second component which comprises a layer of scrim woven from high-density polyethylene material sandwiched between two layers of low-density polyethylene material, all said polyethylene material in said second component also containing fire-retardant material.
Claim 3
Dependent Claim
20 words
A fire-retardant barrier fabric as defined in claim 1 wherein said outer layers of said film include 10-30% fire-retardant material.
Claim 4
Dependent Claim
31 words
A fire-retardant barrier fabric as defined in claim 2 wherein said scrim comprises a substrate woven from tapes of approximately 950 denier and 10×10 count per inch in warp and fill.
Claim 5
Dependent Claim
17 words
A fire-retardant barrier fabric as defined in claim wherein said scrim includes 0.5 to 10% fire-retardant material.
Claim 6
Dependent Claim
27 words
A fire-retardant barrier fabric as defined in claim 1 wherein said fire-retardant material in said low-density polyethylene material is composed of 10% to 30% antimony trioxide polymer.
Claim 7
Dependent Claim
33 words
A fire-retardant barrier fabric as defined in claim 1 wherein said first component is approximately 2-4 mils in thickness and said second component includes a scrim layer of approximately 3.0 mils in thickness.
Claim 8
Dependent Claim
44 words
A fire-retardant barrier fabric as defined in claim 6 and further including a top layer of 0.5 to 2.0 mils thick low-density polyethylene material laminated to the outer layer of said first component to add abrasion resistance and serve as a carrier of pigments.
Claim 9
Dependent Claim
70 words
A fire-retardant barrier fabric comprising a first component which includes a modified multi-layer polyvinyl/polyvinylidene film, the outer layers of said film including 10-30% of antimony trioxide polymer, and a second component laminated to said first component and including a scrim woven from tapes of high-density polyethylene material containing 0.5 to 10% antimony trioxide polymer, said scrim being sandwiched between two layers of low-density polyethylene containing 10-30% of antimony trioxide polymer.
Claim 10
Dependent Claim
70 words
A fire-retardant barrier fabric comprising a first component which includes a modified multi-layer polyvinyl/polyvinylidene film, the outer layers of said film including 10-30% of antimony trioxide polymer, and a second component laminated to said first component and including a scrim woven from tapes of high-density polyethylene material containing 0.5 to 10% antimony trioxide polymer, said scrim being sandwiched between two layers of low-density polyethylene containing 10-30% of antimony trioxide polymer.
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) | 1993-12-03 | 1994-06-04 | 1994-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-03 | 1998-06-04 | 1998-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-03 | 2002-06-04 | 2002-12-04 | $7700.00 | Window Closed / Lapsed |