EP0302596A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electromagnetically-transparent laminate
Assignee: W.L. Gore and Associates Inc
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Filing: 1988-07-04
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Granted: —
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Expires: 2008-07-04
Abstract
Abstract An electromagnetically-transparent structure, which is weather-, moisture-, and gas-resistant, for enclosing and protecting a radio antenna including a layer of laminate, comprising adhered layers of polytetrafluoroethylene (PTFE) membrane (2), thermoplastic polymer (3), a second layer of PTFE membrane (2), and a backing fabric (4) comprising woven fibres of PTFE.
Inventors
- 👤 Robert L. Sassa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 10:47
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/02; H01Q1/42; H01Q1/422
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
49 words
An electromagnetically-transparent structure, which is weather, moisture, and gas-resistant, for enclosing and protecting a radio antenna including a layer of laminate, characterised in that it comprises adhered layers of polytetrafluoroethylene (PTFE) membrane, thermoplastic polymer, a second layer of PTFE membrane, and a backing fabric comprising woven fibres of PTFE.
Claim 2
Dependent Claim
49 words
An electromagnetically-transparent structure, which is weather, moisture, and gas-resistant, for enclosing and protecting a radio antenna including a layer of laminate, characterised in that it comprises adhered layers of polytetrafluoroethylene (PTFE) membrane, thermoplastic polymer, a second layer of PTFE membrane, and a backing fabric comprising woven fibres of PTFE.
Claim 3
Dependent Claim
18 words
A structure according to claim 1, characterised in that the first and second layers of PTFE are porous.
Claim 4
Dependent Claim
21 words
A structure according to claim 2, characterised in that the first and second layers of PTFE are porous expanded PTFE (EPTFE).
Claim 5
Dependent Claim
14 words
A structure according to claim 3, characterised in that the backing fabric is EPTFE.
Claim 6
Dependent Claim
19 words
A structure according to claim 4, characterised in that the thermoplastic polymer is a fluorinated ethylene- propylene co-polymer (FEP).
Claim 7
Dependent Claim
42 words
A structure according to claim 5, characterised in that the thermoplastic polymer is perfluoroalkoxytetrafluoroethylene (FPA), an ethylenetetrafluoroethylene copolymer, a copolymer of vinylidene fluoride and chlorotrifluoroethylene, a copolymer of vinylidene fluoride and hexafluoropropylene, polychlorotrifluoroethylene, a copolymer of hexafluoropropylene and tetrafluoroethylene, polyethylene, or polypropylene.
References Cited (Backward Citations)
US3953566A
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