US4155896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic coatings and paints having unique electrical properties
Assignee: Boeing North American Inc
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Filing: 1977-07-27
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Granted: 1979-05-22
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Expires: 1997-07-27
Abstract
Abstract Coatings with unique electrical properties, particularly for aluminum surfaces of aircraft structures, comprised of metallic fibers such as aluminum fibers, dispersed in an organic coating such as polyurethanes and epoxy primers. The metal fibers are sufficiently small in diameter and mass so as not to interfere with the required organic properties of the coating, but are of sufficient density to provide the required electrical conductivity.
Inventors
- 👤 Delmar J. Rennier
- 👤 Harry Z. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:19
CPC Classifications
C; C09; C09D; C09D175/00; C09D175/04; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/06; C09D163/00; C09D183/00; C09D183/04; C09D5/00; C09D5/24
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
84 words
A lightning protection or anti-static coating composition comprising an organic coating material having dispersed therein metallic fibers, said fibers being of sufficiently small diameter and mass as not to adversely affect the properties of said coating material, but being present in an amount such as to substantially increase the electrical conductivity and the electrical dispersion properties of the coating material, or substantially reduce the dielectric strength thereof when applied to a substrate, the diameter of said fibers ranging from about 0.00001" to about 0.002".
Claim 2
Dependent Claim
84 words
A lightning protection or anti-static coating composition comprising an organic coating material having dispersed therein metallic fibers, said fibers being of sufficiently small diameter and mass as not to adversely affect the properties of said coating material, but being present in an amount such as to substantially increase the electrical conductivity and the electrical dispersion properties of the coating material, or substantially reduce the dielectric strength thereof when applied to a substrate, the diameter of said fibers ranging from about 0.00001" to about 0.002".
Claim 3
Dependent Claim
35 words
The coating composition as defined in claim 1, the length of said fibers ranging from about 0.002" to about 0.02", the length to diameter ratio of said fibers ranging from about 10 to about 500.
Claim 4
Dependent Claim
31 words
The coating composition as defined in claim 1, said fibers being present in an amount ranging from about 0.001 to about 2 parts, per 60 parts of resin solids, by weight.
Claim 5
Dependent Claim
31 words
The coating composition as defined in claim 2, said fibers being present in an amount ranging from about 0.001 to about 2 parts, per 60 parts of resin solids, by weight.
Claim 6
Dependent Claim
21 words
The coating composition as defined in claim 1, said fibers being metal fibers, plated metal fibers or metal coated non-metallic fibers.
Claim 7
Dependent Claim
38 words
The coating composition as defined in claim 1, said fibers being selected from the group consisting of aluminum and aluminum alloys, nickel, steel, tin plated steel, copper plated steel, nickel plated glass fibers and copper plated glass fibers.
Claim 8
Dependent Claim
21 words
The coating composition as defined in claim 4, said fibers being metal fibers, plated metal fibers or metal coated non-metallic fibers.
Claim 9
Dependent Claim
39 words
The coating composition as defined in claim 1, said organic coating material including a polymer selected from the group consisting of polyurethane, epoxy, vinyl, and acrylic polymers, vinyl-acrylic copolymers, fluoroelastomers, butadiene copolymers and homopolymers, silicone, melamine and phenolic resins.
Claim 10
Dependent Claim
36 words
The coating composition as defined in claim 8, the length of said fibers ranging from about 0.002" to about 0.02", and the length to diameter ratio of said fibers ranging from about 10 to about 500.
Claim 11
Dependent Claim
21 words
The coating composition as defined in claim 9, said fibers being metal fibers, plated metal fibers or metal coated non-metallic fibers.
Claim 12
Dependent Claim
38 words
The coating composition as defined in claim 9, said fibers being selected from the group consisting of aluminum, and aluminum alloys, nickel, steel, tin plated steel, copper plated steel, nickel plated glass fibers and copper plated glass fibers.
Claim 13
Dependent Claim
21 words
The coating composition as defined in claim 1, said fibers being metal fibers, plated metal fibers or metal coated non-metallic fibers.
Claim 14
Dependent Claim
84 words
A lightning protection or anti-static coating composition comprising an organic coating material having dispersed therein metallic fibers, said fibers being of sufficiently small diameter and mass as not to adversely affect the properties of said coating material, but being present in an amount such as to substantially increase the electrical conductivity and the electrical dispersion properties of the coating material, or substantially reduce the dielectric strength thereof when applied to a substrate, the length of said fibers ranging from about 0.002" to about 0.02".
Claim 15
Dependent Claim
84 words
A lightning protection or anti-static coating composition comprising an organic coating material having dispersed therein metallic fibers, said fibers being of sufficiently small diameter and mass as not to adversely affect the properties of said coating material, but being present in an amount such as to substantially increase the electrical conductivity and the electrical dispersion properties of the coating material, or substantially reduce the dielectric strength thereof when applied to a substrate, the length of said fibers ranging from about 0.002" to about 0.02".
Claim 16
Dependent Claim
23 words
The coating composition as defined in claim 13, the length to diameter ratio of said fibers ranging from about 10 to about 500.
Claim 17
Dependent Claim
30 words
The coating composition as defined claim 14, said fibers being present in an amount ranging from about 0.001 to about 2 parts, per 60 parts of resin solids, by weight.
Claim 18
Dependent Claim
21 words
The coating composition as defined in claim 13, said fibers being metal fibers, plated metal fibers or metal coated non-metallic fibers.
Claim 19
Dependent Claim
38 words
The coating composition as defined in claim 15, said fibers being selected from the group consisting of aluminum and aluminum alloys, nickel, steel, tin plated steel, copper plated steel, nickel plated glass fibers and copper plated glass fibers.
Claim 20
Dependent Claim
39 words
The coating composition as defined in claim 17, said organic coating material including a polymer selected from the group consisting of polyurethane, epoxy, vinyl, and acrylic polymers, vinyl-acrylic copolymers, fluoroelastomers, butadiene copolymers and homopolymers, silicone, melamine and phenolic resins.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-21 | 1982-11-20 | 1983-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-21 | 1986-11-20 | 1987-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-21 | 1990-11-20 | 1991-05-22 | $7700.00 | Window Closed / Lapsed |