US4170675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced flexible panels comprising plastic sheeting on opposed sides of a mesh layer and a metal foil layer in association with a plastic sheet layer
Assignee: BARNARDS Ltd SALHOUSE RDNORWICH
•
Filing: 1978-06-09
•
Granted: 1979-10-09
•
Expires: 1998-06-09
Abstract
Abstract A fire-retardant sheet comprising superposed layers including a plastic material with a metal foil on one side and a further plastic sheet or layer laminated thereto with the interposition of a wire mesh.
Inventors
- 👤 Michael Greengrass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:47
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/02; A; A62; A62C; A62C2/00; A62C2/06; B32B15/04; B32B15/08; B32B15/12; B32B15/20; B32B27/00; B32B27/32; E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; E04B1/941; E04B1/942; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2323/00; B32B2323/04; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24091; Y10T428/24099; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/109; Y10T442/11
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
61 words
A fire resistant and environmental containment sheet comprising, in combination: at least four layers including opposed layers of plastic material on opposite sides of a mesh, said mesh having a plurality of openings, the plastic layers being fused together through said openings to encapsulate the mesh, one of said plastic layers also including a metal foil fused to the other side.
Claim 2
Dependent Claim
61 words
A fire resistant and environmental containment sheet comprising, in combination: at least four layers including opposed layers of plastic material on opposite sides of a mesh, said mesh having a plurality of openings, the plastic layers being fused together through said openings to encapsulate the mesh, one of said plastic layers also including a metal foil fused to the other side.
Claim 3
Dependent Claim
14 words
The sheet of claim 1 wherein the mesh is a metal wire support mesh.
Claim 4
Dependent Claim
12 words
The sheet of claim 2 wherein the mesh is of rectangular form.
Claim 5
Dependent Claim
12 words
The sheet of claim 2 wherein the mesh is of diamond form.
Claim 6
Dependent Claim
11 words
The sheet of claim 1 wherein said plastic material is polyethylene.
Claim 7
Dependent Claim
12 words
The sheet of claim 1 wherein said metal foil is aluminum foil.
Claim 8
Dependent Claim
17 words
The sheet of claim 1 including metal foil on the outside of each layer of plastic material.
References Cited (Backward Citations)
US2384771A
Cited
US2742391A
Cited
US3310453A
Cited
US3660138A
Cited
US4013812A
Cited
US4096304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-08 | 1983-04-09 | 1983-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-08 | 1987-04-09 | 1987-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-08 | 1991-04-09 | 1991-10-09 | $7700.00 | Window Closed / Lapsed |