Patent US3969731A successfully refreshed from Google Patents.
US3969731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mesh articles particularly for use as reflectors of radio waves
Assignee: Raytheon Co
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Filing: 1974-02-19
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Granted: 1976-07-13
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Expires: 1994-02-19
Abstract
Abstract A mesh article, such as a reflector for radio frequencies, comprises glassy base fibers of high tensile strength, low elongation properties and low coefficient of expansion, the fibers being coated with a thin layer of metal. In a typical embodiment, the fibers are quartz coated with aluminum. The fibers are not interwoven and are bonded together at their intersections and to a peripheral ring support. These articles are lightweight, flexible and foldable and possess a "shape memory."
Inventors
- 👤 Robert K. Jenkins
- 👤 Leon B. Keller
- 👤 John H. Cover, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:50
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/14; H01Q15/141; H01Q15/142; H01Q15/16; H01Q15/161; H01Q1/00; H01Q1/27; H01Q1/28; H01Q1/288
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
58 words
A folded antenna for radio waves comprising a peripheral ring support, a flexible non-woven preformed mesh member having dimensional stability secured to said support, said mesh member comprising criss-crossing flexible fibers of negligible extensibility having a modulus of elasticity and yield strength sufficient for providing the negligible extensibility, each of said fibers integrally bonded to said ring support.
Claim 2
Dependent Claim
58 words
A folded antenna for radio waves comprising a peripheral ring support, a flexible non-woven preformed mesh member having dimensional stability secured to said support, said mesh member comprising criss-crossing flexible fibers of negligible extensibility having a modulus of elasticity and yield strength sufficient for providing the negligible extensibility, each of said fibers integrally bonded to said ring support.
Claim 3
Dependent Claim
13 words
An antenna as in claim 1 wherein said mesh member is electrically conductive.
Claim 4
Dependent Claim
13 words
An antenna as in claim 1 wherein said fibers are metal-coated glassy fibers.
Claim 5
Dependent Claim
12 words
An antenna as in claim 3 wherein said glassy fibers are quartz.
Claim 6
Dependent Claim
97 words
A folded antenna for radio waves comprising a peripheral ring support, a flexible preformed antenna mesh member secured to said support, said mesh member comprising intersecting fibers having a modulus of elasticity exceeding 10 × 10 6 psi and a yield strength exceeding 32 × 10 3 psi sufficient for maintaining negligible extensibility of the fibers, with fibers extending in a common direction lying in a common surface touching and lying parallel with the surface in which fibers extending in directions other than said common direction lie, each of said fibers integrally bonded to said ring support.
Claim 7
Dependent Claim
97 words
A folded antenna for radio waves comprising a peripheral ring support, a flexible preformed antenna mesh member secured to said support, said mesh member comprising intersecting fibers having a modulus of elasticity exceeding 10 × 10 6 psi and a yield strength exceeding 32 × 10 3 psi sufficient for maintaining negligible extensibility of the fibers, with fibers extending in a common direction lying in a common surface touching and lying parallel with the surface in which fibers extending in directions other than said common direction lie, each of said fibers integrally bonded to said ring support.
Claim 8
Dependent Claim
11 words
The invention according to claim 5 wherein said fibers are quartz.
Claim 9
Dependent Claim
17 words
The invention according to claim 5 wherein intersecting fibers are bonded to each other at their intersections.
Claim 10
Dependent Claim
15 words
A folded antenna as in claim 5 wherein said fibers are formed of non-woven fibers.
Claim 11
Dependent Claim
17 words
The invention according to claim 5 wherein said fibers comprise a metal aluminum coating fibers of quartz.
Claim 12
Dependent Claim
19 words
A folded antenna as in claim 5 wherein said preformed unitary flexible mesh member is shaped as a parabola.
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) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |