Patent US4659602A successfully refreshed from Google Patents.
US4659602A
Expired / Lapsed
US
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Broad spectrum camouflage mat
Assignee: Individual
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Filing: 1985-11-12
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Granted: 1987-04-21
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Expires: 2005-11-12
Abstract
Abstract A multispectral three-dimensional camouflage mat has a base or substrate layer into which are woven strands of yarn of varying length and color to simulate terrain or landscape, or alternatively to serve as a decoy by simulating a target. Desired reflection and absorption of visible light as well as infrared, ultraviolet, and microwave frequencies is provided by materials integrally contained within the yarn strands, and by supplemental materials on the base layer.
Inventors
- 👤 Jorgen Birch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:59
CPC Classifications
F; F41; F41H; F41H3/00; Y; Y10; Y10S; Y10S428/00; Y10S428/919; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23929; Y10T428/23936; Y10T428/23979; Y10T428/23993
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
53 words
A camouflage mat, comprising a backing layer, a body of tufted yarn strands secured to the backing layer, the strands being formed of extended plastic fibers which integrally embody selected camouflage properties responsive to electromagnetic wavelengths outside the visible spectrum, and an infrared-blocking sheet secured to a target-facing undersurface of the backing layer.
Claim 2
Dependent Claim
53 words
A camouflage mat, comprising a backing layer, a body of tufted yarn strands secured to the backing layer, the strands being formed of extended plastic fibers which integrally embody selected camouflage properties responsive to electromagnetic wavelengths outside the visible spectrum, and an infrared-blocking sheet secured to a target-facing undersurface of the backing layer.
Claim 3
Dependent Claim
23 words
The mat defined in claim 1 wherein the fibers are extruded from a plastic material containing an additive which embodies said camouflage properties.
Claim 4
Dependent Claim
18 words
The mat defined in claim 2 wherein the strands are formed by air entanglement of multiple bulk-continuous-filament fibers.
Claim 5
Dependent Claim
20 words
The mat defined in claim 3 wherein the plastic material is selected from the group consisting of polypropylene and nylon.
Claim 6
Dependent Claim
28 words
The mat defined in claim 1 wherein individual strands are formed of multiple fibers of at least two different formulations to impart different camouflage properties to the strand.
Claim 7
Dependent Claim
20 words
The mat defined in claim 1 wherein the extended fibers embody additives imparting camouflage properties with respect to radar energy.
Claim 8
Dependent Claim
22 words
The mat defined in claim 1 wherein the extended fibers embody additives imparting camouflage properties with respect to infrared and ultraviolet energy.
Claim 9
Dependent Claim
19 words
The mat defined in claim 1 wherein the backing layer is polypropylene plastic, and the sheet is polyurethane plastic.
Claim 10
Dependent Claim
39 words
The mat defined in claim 1 wherein the tufted yarn strands have different coloration and are arranged at different height levels above the backing layer, the colorations and levels being selected to provide visual simulation of a natural terrain.
Claim 11
Dependent Claim
43 words
The mat defined in claim 9 wherein the yarn strands are uncut loops extending from the backing layer, the longer strands in a higher level above the backing layer at least partially concealing shorter strands in a lower level above the backing layer.
Claim 12
Dependent Claim
22 words
The mat defined in claim 10 wherein the strands are arranged in at least three different height levels above the backing sheet.
Claim 13
Dependent Claim
22 words
The mat defined in claim 10 wherein the strand fibers are extruded from plastic containing an additive which embodies said camouflage properties.
Claim 14
Dependent Claim
19 words
The mat defined in claim 12 wherein the plastic is selected from the group consisting of polypropylene and nylon.
Claim 15
Dependent Claim
20 words
The mat defined in claim 12, and further comprising a moisture-absorbing material on an outer surface of the backing layer.
Claim 16
Dependent Claim
15 words
The mat defined in claim 12 wherein the backing layer is substantially impervious to liquid.
Claim 17
Dependent Claim
81 words
A camouflage mat comprising a backing layer, and a body of tufted yarn strands secured to the backing layer to extend from an upper surface thereof, the strands of the body being of at least several different lengths whereby at least some shorter strands are concealed from visual observation by longer overhanging strands, the shorter and longer strands having different signatures to interrogating wavelengths, the strands being colored and arranged to provide an accurate and detailed simulation of a desired scene.
Claim 18
Dependent Claim
81 words
A camouflage mat comprising a backing layer, and a body of tufted yarn strands secured to the backing layer to extend from an upper surface thereof, the strands of the body being of at least several different lengths whereby at least some shorter strands are concealed from visual observation by longer overhanging strands, the shorter and longer strands having different signatures to interrogating wavelengths, the strands being colored and arranged to provide an accurate and detailed simulation of a desired scene.
Claim 19
Dependent Claim
25 words
The mat defined in claim 16 wherein the simulation is maintained for interrogating wavelengths outside the visual range by response characteristics integrated into the strands.
Claim 20
Dependent Claim
25 words
The mat in claim 17, and further comprising a material on an undersurface of the backing layer which provides a desired response to nonvisual wavelengths.
Claim 21
Dependent Claim
26 words
The mat defined in claim 18, and further comprising a protective sheet underlying the material and backing layer, and secured thereto to form a laminated sandwich.
Claim 22
Dependent Claim
12 words
The mat defined in claim 19 wherein the sheet is polyurethane plastic.
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) | 1990-04-20 | 1990-10-20 | 1991-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-20 | 1994-10-20 | 1995-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-20 | 1998-10-20 | 1999-04-21 | $7700.00 | Window Closed / Lapsed |