Patent US4659598A successfully refreshed from Google Patents.
US4659598A
Expired / Lapsed
US
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Radome structure
Assignee: Saint Gobain Performance Plastics Corp
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Filing: 1985-08-05
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Granted: 1987-04-21
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Expires: 2005-08-05
Abstract
Abstract A radome being a unitary structure comprised of a fiber reinforced plastic is produced with a large percentage of the fibers being randomly oriented in a plane parallel to the inner surface of the radome. The radome is produced by packing a layer of fiber filled powder around a mandrel having its outer contour resemble the inner contour of the radome. The mandrel and packed powder are then subjected to isostatic pressing to properly orient the fibers. The radome is finished by sintering the powder and removing the finished form from the mandrel.
Inventors
- 👤 G. Robert Traut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:06
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/42; B; B29; B29C; B29C43/00; B29C43/02; B29C43/10; B29C43/12; B29C67/00; B29C67/02; B29C67/04; B29C2793/00; B29C2793/009; B29K; B29K2027/00; B29K2027/12; B29K2027/18; B29K2105/00; B29K2105/06; B29K2105/12; B29K2105/14; B29K2105/25; B29K2105/251; B29L; B29L2031/00; B29L2031/34; B29L2031/3456; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/1352; Y10T428/1372; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
105 words
A unitary structure, said structure having an axis and comprising: a tip portion, said tip portion being symmetrical with respect to the axis of the unitary structure and being continuous; a tubular portion extending from and being integral with said tip portion, said tubular portion being coaxial with said tip portion and terminating at an annular surface having an external diameter greater than the maximum diameter of said tip portion; and said tip and tubular portions being comprised of a fiber filled polymeric composite, the majority of said fibers being randomly oriented in a plane parallel to the nearest interior surface of the unitary structure.
Claim 2
Dependent Claim
105 words
A unitary structure, said structure having an axis and comprising: a tip portion, said tip portion being symmetrical with respect to the axis of the unitary structure and being continuous; a tubular portion extending from and being integral with said tip portion, said tubular portion being coaxial with said tip portion and terminating at an annular surface having an external diameter greater than the maximum diameter of said tip portion; and said tip and tubular portions being comprised of a fiber filled polymeric composite, the majority of said fibers being randomly oriented in a plane parallel to the nearest interior surface of the unitary structure.
Claim 3
Dependent Claim
19 words
The article of claim 1 wherein the fibers comprise from 5 to 40 parts by weight of the composite.
Claim 4
Dependent Claim
13 words
The article of claim 1 wherein: said polymeric composite comprises a fluoropolymeric composite.
Claim 5
Dependent Claim
12 words
The art of claim 1 wherein: said unitary structure comprises a radome.
Claim 6
Dependent Claim
12 words
The art of claim 4 including: a supporting liner within said radome.
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 |