US4686141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pellicular laminate means for shielding structures from electromagnetic radiation
Assignee: Brunswick Corp
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Filing: 1984-05-11
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Granted: 1987-08-11
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Expires: 2004-05-11
Abstract
Abstract A pellicular laminate comprising: a web of polypropylene film, on at least one surface of which is a layer of polyurethane; a metal, preferably a ductile metal such as gold, which has been deposited on that surface of the polyurethane layer farthest away from said web, by sputtering; a layer of adhesive on the exposed metal surface; and a release liner in the form of a film of polyester or the like covering, but separable from, said adhesive layer. With the web and the release liner removed, the remaining pellicular laminate is useful in shielding structures from electromagnetic radiation by applying the laminate to the surface of the structure to be shielded with the adhesive side towards the structure.
Inventors
- 👤 Richard L. Burns
- 👤 Robert J. Petcavich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:43
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0073; H05K9/0081; H05K9/0084; C; C23; C23C; C23C28/00; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/28; Y10T428/2804; Y10T428/31504; Y10T428/31551; Y10T428/31605
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
94 words
Strips or sheets of pellicular laminate for covering the surface of, and shielding, an aircraft, and instrument containers therein, from electromagnetic radiation, and adapted to expand and contract with the expansion and contraction of the surface of said aircraft and said instrument containers without separating therefrom as the aircraft moves through the atmosphere and is subjected to mechanical, aerodynamic, and temperature variations, said laminate being composed of a pellicule of polyurethane which has a coating consisting essentially of ductile metal sputter-deposited thereon, and a coating of pressure-sensitive adhesive on the surface of said metal.
Claim 2
Dependent Claim
94 words
Strips or sheets of pellicular laminate for covering the surface of, and shielding, an aircraft, and instrument containers therein, from electromagnetic radiation, and adapted to expand and contract with the expansion and contraction of the surface of said aircraft and said instrument containers without separating therefrom as the aircraft moves through the atmosphere and is subjected to mechanical, aerodynamic, and temperature variations, said laminate being composed of a pellicule of polyurethane which has a coating consisting essentially of ductile metal sputter-deposited thereon, and a coating of pressure-sensitive adhesive on the surface of said metal.
Claim 3
Dependent Claim
11 words
The pellicular laminate of claim 1 wherein said metal is gold.
Claim 4
Dependent Claim
22 words
An aircraft characterized in that the outer surfaces thereof are covered with a continuous layer of the pellicular laminate of claim 1.
Claim 5
Independent Claim
92 words
A method of shielding aircraft from electromagnetic radiation which comprises applying to the surfaces of said aircraft strips or sheets of a pellicular laminate adapted to expand and contrast with the expansion and contraction of the surfaces of said aircraft without separating therefrom as the aircraft moves through the atmosphere and is thereby subjected to mechanical, aerodynamic, and temperature variations, said laminate being composed of a pellicule of polyurethane having a coating consisting essentially of a ductile metal sputter-deposited thereon, and a coating of pressure-sensitive adhesive covering the surface of said metal.
Claim 6
Independent Claim
92 words
A method of shielding aircraft from electromagnetic radiation which comprises applying to the surfaces of said aircraft strips or sheets of a pellicular laminate adapted to expand and contrast with the expansion and contraction of the surfaces of said aircraft without separating therefrom as the aircraft moves through the atmosphere and is thereby subjected to mechanical, aerodynamic, and temperature variations, said laminate being composed of a pellicule of polyurethane having a coating consisting essentially of a ductile metal sputter-deposited thereon, and a coating of pressure-sensitive adhesive covering the surface of said metal.
Claim 7
Independent Claim
51 words
A method of shielding an instrument container in an aircraft from electromagnetic radiation which comprises applying to the surfaces of said container a pellicular laminate composed of a film of polyurethane having coating consisting of a ductile metal sputter-deposited thereon and an adhesive covering said metal-coated surface of said polyurethane film.
Claim 8
Independent Claim
51 words
A method of shielding an instrument container in an aircraft from electromagnetic radiation which comprises applying to the surfaces of said container a pellicular laminate composed of a film of polyurethane having coating consisting of a ductile metal sputter-deposited thereon and an adhesive covering said metal-coated surface of said polyurethane film.
Claim 9
Dependent Claim
10 words
The method of claim 4 wherein said metal is gold.
Claim 10
Dependent Claim
10 words
The method of claim 5 wherein said metal is gold.
Claim 11
Dependent Claim
20 words
The article of claim 1 wherein the pellicular laminate has a surface resistivity of less than 5 ohms per square.
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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) | 1990-08-10 | 1991-02-09 | 1991-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-10 | 1995-02-09 | 1995-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-10 | 1999-02-09 | 1999-08-11 | $7700.00 | Window Closed / Lapsed |