Patent US3623162A successfully refreshed from Google Patents.
US3623162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folded slot antenna
Assignee: Lockheed Martin Corp
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Filing: 1970-07-24
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Granted: 1971-11-23
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Expires: 1990-07-24
Abstract
Abstract A folded slot antenna comprising a sheet of conductive material folded upon itself and having a bow tie shaped slot arranged symmetrically about the bend of the fold on the surface of the sheet. This antenna structure can be flush mounted, for example, in the leading edge of the horizontal stabilizer or of the dorsal fin of an aircraft.
Inventors
- 👤 Arthur R Whitty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:50
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/28; H01Q1/286; H01Q1/287; H01Q13/00; H01Q13/10; H01Q13/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
33 words
An antenna comprising a sheet of conductive material folded upon itself and having a bow tie shaped endless slot arranged symmetrically about the bend of the fold on the surface of the sheet.
Claim 2
Dependent Claim
33 words
An antenna comprising a sheet of conductive material folded upon itself and having a bow tie shaped endless slot arranged symmetrically about the bend of the fold on the surface of the sheet.
Claim 3
Dependent Claim
13 words
The invention according to claim 1 wherein said slot has a uniform width.
Claim 4
Dependent Claim
16 words
The invention according to claim 2 wherein said conductive sheet is a sheet of metallic material.
Claim 5
Dependent Claim
32 words
The invention according to claim 3 wherein said sheet of metallic material is affixed to a sheet of rigid electromagnetically transparent material which has the same folded contour as the metallic sheet.
References Cited (Backward Citations)
GB803723A
Cited
US3475555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |