US5488766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weather-resistant electromagnetic interference shielding for electronic equipment enclosures
Assignee: W.L. Gore and Associates Inc
•
Filing: 1994-10-07
•
Granted: 1996-02-06
•
Expires: 2014-10-07
Abstract
Abstract Weather-resistant electromagnetic radiation shielding materials and structures for electromagnetic interference attenuation for electronic equipment situated in unshielded outdoor housings are described.
Inventors
- 👤 Michael Gerry
- 👤 David Z. Kelly
- 👤 Michael G. Ryan
- 👤 Thomas E. Dykes
- 👤 Robert Sassa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:21
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/02; B32B27/00; B32B27/18; B32B27/20; B32B27/205; B32B27/06; B32B27/08; B32B27/12; B32B27/32; B32B27/322; B32B5/00; B32B5/02; B32B5/022; B32B5/024; B32B7/04; B32B7/12; B32B7/14; H; H01; H01B; H01B1/00; H01B1/20; H01B1/22; H01B1/24; H01Q; H01Q17/00; H05; H05K; H05K9/00; H05K9/0073; H05K9/0081; H05K9/0083; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2307/00; B32B2307/20; B32B2307/202; B32B2307/212; B32B2307/70; B32B2307/712; B32B2327/00; B32B2327/12; B32B2327/18; B32B2457/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/109; Y10T442/116; Y10T442/30; Y10T442/3065; Y10T442/3089; Y10T442/3106; Y10T442/3382; Y10T442/3407; Y10T442/3854; Y10T442/3878
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
57 words
A process for attenuation of electromagnetic radiation for electronic equipment situated in unshielded outdoor housings comprising the steps of fashioning, erecting, and fixing in place a construction of panels of electromagnetic radiation shielding weather-resistant laminated composite material comprising a flexible layer of electrically-conductive material having at least one layer of porous polytetrafluoroethylene material adhered to each side.
Claim 2
Dependent Claim
57 words
A process for attenuation of electromagnetic radiation for electronic equipment situated in unshielded outdoor housings comprising the steps of fashioning, erecting, and fixing in place a construction of panels of electromagnetic radiation shielding weather-resistant laminated composite material comprising a flexible layer of electrically-conductive material having at least one layer of porous polytetrafluoroethylene material adhered to each side.
Claim 3
Dependent Claim
25 words
The process as recited in claim 1, wherein the enclosing construction is free-standing, supported by framework independent of the electronic equipment housing which it encloses.
Claim 4
Dependent Claim
27 words
The process as recited in claim 1, wherein the layered porous polytetrafluoroethylene material is selected from (a) woven fabric of polytetrafluoroethylene fibers or (b) porous expanded polytetrafluoroethylene.
Claim 5
Dependent Claim
17 words
The process as recited in claim 1, wherein the layer of electrically-conductive material is metallized porous polytetrafluoroethylene.
Claim 6
Dependent Claim
22 words
The process as recited in claim 1, wherein the layer of electrically-conductive material is a fabric having a surface coated with metal.
Claim 7
Dependent Claim
17 words
The process as recited in claim 1, wherein the layer of electrically-conductive material is metal wire mesh.
Claim 8
Dependent Claim
20 words
The process as recited in claim 1, wherein the layer of electrically-conductive material is porous polytetrafluoroethylene containing electrically-conductive filler particles.
Claim 9
Dependent Claim
15 words
The process as recited in claim 7, wherein the electrically-conductive filler particles are carbon black.
Claim 10
Dependent Claim
88 words
A process for attenuation of electromagnetic radiation for electronic equipment situated in unshielded outdoor housings comprising the steps of fashioning, erecting, and fixing in place a construction of panels of electromagnetic radiation shielding weather-resistant laminated composite material comprising (a) at least one layer comprising polytetrafluoroethylene fibers; (b) at least one layer of porous membrane; (c) at least one layer of thermoplastic polymer; and (d) at least one layer of electrically-conductive material; said composite material panels including means to electrically ground them so as to provide electromagnetic radiation shielding.
Claim 11
Dependent Claim
88 words
A process for attenuation of electromagnetic radiation for electronic equipment situated in unshielded outdoor housings comprising the steps of fashioning, erecting, and fixing in place a construction of panels of electromagnetic radiation shielding weather-resistant laminated composite material comprising (a) at least one layer comprising polytetrafluoroethylene fibers; (b) at least one layer of porous membrane; (c) at least one layer of thermoplastic polymer; and (d) at least one layer of electrically-conductive material; said composite material panels including means to electrically ground them so as to provide electromagnetic radiation shielding.
Claim 12
Dependent Claim
21 words
The process as recited in claims 9, wherein said at least one layer of thermoplastic polymer is a non-porous continuous film.
Claim 13
Dependent Claim
22 words
The process as recited in claim 10, wherein said at least one layer of thermoplastic polymer is fluorinated ethylene propylene (FEP) copolymer.
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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) | 1999-02-05 | 1999-08-07 | 2000-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-02-05 | 2003-08-07 | 2004-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-02-05 | 2007-08-07 | 2008-02-06 | $7700.00 | Window Closed / Lapsed |