US5227230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal control materials
Assignee: WL Gore and Associates UK Ltd
•
Filing: 1991-09-19
•
Granted: 1993-07-13
•
Expires: 2011-09-19
Abstract
Abstract A thermal control material which is flexible and highly conformable comprises a thin substrate of porous expanded polytetrafluoroethylene which has been metallized on one of its surfaces by vacuum deposition to provide a thin metal film (usually aluminum). A multi-layer construction is made up by joining together a plurality of metallized layers at intervals over the areal extent of the construction, e.g. by discontinuous stitching or by adhesive spots. The material is light, strong and has excellent drape characteristics, together with good thermal insulation properties.
Inventors
- 👤 Gordon J. A. McGlade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:37
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/08; B32B7/09; B32B5/00; B32B5/18; B32B5/22; B32B5/32; B32B7/05; B32B7/12; B32B7/14; F; F16; F16L; F16L59/00; F16L59/02; F16L59/028; F16L59/08; B32B2255/00; B32B2255/10; B32B2255/102; B32B2255/20; B32B2255/205; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/025; B32B2305/00; B32B2305/02; B32B2305/022; B32B2307/00; B32B2307/30; B32B2307/304; B32B2311/00; B32B2311/24; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B2001/7691; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/24996; Y10T428/249981; Y10T428/249987; Y10T428/24999; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
82 words
A thermal control material which is a layered construction consisting essentially of at least two layers; each said layer being made of porous expanded polytetrafluoroethylene which has been metallized on one of its surfaces to provide a thin metal film on its porous surface; said layers being arranged such that the metallized surface of each said layer is adjacent to the untreated surface of the adjacent layer, and said layers being joined together at intervals over the areal extent of the construction.
Claim 2
Dependent Claim
82 words
A thermal control material which is a layered construction consisting essentially of at least two layers; each said layer being made of porous expanded polytetrafluoroethylene which has been metallized on one of its surfaces to provide a thin metal film on its porous surface; said layers being arranged such that the metallized surface of each said layer is adjacent to the untreated surface of the adjacent layer, and said layers being joined together at intervals over the areal extent of the construction.
Claim 3
Dependent Claim
27 words
A thermal control material as claimed in claim 1, wherein the layers are joined together at intervals over the areal extent of the construction by discontinuous stitching.
Claim 4
Dependent Claim
50 words
A thermal control material as claimed in claim 1, wherein the layers are joined together at intervals over the areal extend of the construction by an electrically conductive material so that the respective metal films of the construction are electrically interconnected at intervals over the areal extent of the construction.
Claim 5
Dependent Claim
26 words
A thermal control material as claimed in claim 1, wherein the layers are joined together at intervals over the areal extent of the construction by adhesive.
Claim 6
Dependent Claim
24 words
A thermal control material as claimed in claim 1, wherein the thin metal film is aluminium having a thickness of at least 1000 Angstroms.
References Cited (Backward Citations)
US2786792A
Cited
US4096227A
Cited
US4230057A
Cited
US4232620A
Cited
US4508776A
Cited
US4557957A
Cited
US4576861A
Cited
US4640866A
Cited
US4547424A
Cited
EP0160439A2
Cited
US4857381A
Cited
US4781969A
Cited
US4911771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-12 | 1997-01-11 | 1997-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-12 | 2001-01-11 | 2001-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-12 | 2005-01-11 | 2005-07-13 | $7700.00 | Window Closed / Lapsed |