US4451833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radome formed of segmented rings of fiber-PTFE composite
Assignee: Saint Gobain Performance Plastics Corp
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Filing: 1982-01-18
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Granted: 1984-05-29
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Expires: 2002-01-18
Abstract
Abstract A radome and the method of manufacture thereof are presented wherein the radome is constructed from a series of rings of fiber reinforced polytetrafluoroethylene.
Inventors
- 👤 G. Robert Traut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:01
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/42; B; B29; B29C; B29C43/00; B29C43/006; B29C69/00; B29D; B29D22/00; B29C48/00; B29C48/001; B29C48/0011; B29C48/03; B29C48/04; B29C48/09; B29C48/13; B29K; B29K2105/00; B29K2105/06; B29K2105/25; B29K2105/251
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
146 words
A radome blank comprising: a tip portion, said tip portion being symmetrical with respect to the radome axis and being continuous, said tip portion being formed with an annular planar surface area, said planar surface area defining a frustoconical shape; and a tubular portion extending from and integral with said tip portion, said tubular portion being coaxial with said tip portion and terminating at an annular surface having a radius greater than said tip portion annular surface area, said tubular portion being formed a plurality of ring-shaped segments, said segments each having a different average outer diameter, abutting surfaces of said segments being perpendicular to the radome outer surface, extensions of said abutting surfaces intersecting said axis at an angle of other than 90°; said tip and tubular portions being comprised of a fiber-polytetrafluoroethylene composite and said segments being diffusion bonded to form an integral structure.
Claim 2
Dependent Claim
146 words
A radome blank comprising: a tip portion, said tip portion being symmetrical with respect to the radome axis and being continuous, said tip portion being formed with an annular planar surface area, said planar surface area defining a frustoconical shape; and a tubular portion extending from and integral with said tip portion, said tubular portion being coaxial with said tip portion and terminating at an annular surface having a radius greater than said tip portion annular surface area, said tubular portion being formed a plurality of ring-shaped segments, said segments each having a different average outer diameter, abutting surfaces of said segments being perpendicular to the radome outer surface, extensions of said abutting surfaces intersecting said axis at an angle of other than 90°; said tip and tubular portions being comprised of a fiber-polytetrafluoroethylene composite and said segments being diffusion bonded to form an integral structure.
Claim 3
Dependent Claim
35 words
The article of claim 1 wherein the fibers comprise from 5 to 50 parts by weight of the composite and are nonisotropically oriented in a direction which will minimize the erosion rate of the radome.
References Cited (Backward Citations)
US3470561A
Cited
US3383444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-29 | 1987-11-28 | 1988-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-29 | 1991-11-28 | 1992-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-29 | 1995-11-28 | 1996-05-29 | $7700.00 | Window Closed / Lapsed |