Patent US3696431A successfully refreshed from Google Patents.
US3696431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low silhouette antenna
Assignee: Individual
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Filing: 1970-11-05
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Granted: 1972-10-03
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Expires: 1990-11-05
Abstract
Abstract A low silhouette antenna for mounting on an electrically conductive plate, such as a camper top, and including a radiator spaced from such plate. The radiator is formed to define a ring which is open on one side and terminates in ends that form extremities spaced apart a distance sufficient to minimize production of electrical capacitance therebetween. A distance adjusting means is provided for adjusting the frequency of the radiator whereby such antenna may be mounted on a camper and the distance adjusting means adjusted to adjust such radiator to its resonant frequency without the necessity of installing a capacitor.
Inventors
- 👤 James F Holland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:08
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/26; H01Q9/265; H01Q1/00; H01Q1/27; H01Q1/32; H01Q1/325; H01Q1/3275
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
144 words
A low silhouette antenna for a selected frequency and comprising: electrically conductive base means; an elongated radiator having a length greater than a capacity tuned radiator for said selected frequency and formed to define a generally ring shape and terminating in ends spaced apart a distance sufficient to substantially eliminate capacitance therebetween; mounting means for mounting said radiator spaced a sufficient distance from said base means to provide a series tuned capacity effect between said radiator and said base means; and distance adjusting means including means mounted on one of said spaced ends for adjusting the length of said radiator and means mounting said radiator to said base for adjustment to selected spacings therefrom whereby said antenna may be mounted on a mobile vehicle and said frequency adjusting means adjusted to the resonant frequency of said radiator without the necessity of installing a capacitor.
Claim 2
Dependent Claim
144 words
A low silhouette antenna for a selected frequency and comprising: electrically conductive base means; an elongated radiator having a length greater than a capacity tuned radiator for said selected frequency and formed to define a generally ring shape and terminating in ends spaced apart a distance sufficient to substantially eliminate capacitance therebetween; mounting means for mounting said radiator spaced a sufficient distance from said base means to provide a series tuned capacity effect between said radiator and said base means; and distance adjusting means including means mounted on one of said spaced ends for adjusting the length of said radiator and means mounting said radiator to said base for adjustment to selected spacings therefrom whereby said antenna may be mounted on a mobile vehicle and said frequency adjusting means adjusted to the resonant frequency of said radiator without the necessity of installing a capacitor.
Claim 3
Dependent Claim
60 words
A low silhouette antenna as set forth in claim 1 wherein: said distance adjusting means includes a plurality of upright posts supported from plate means having their upper extremities formed with respective upwardly opening threaded bores, springs interposed between the upper ends of said posts and said radiator and screws extending downwardly through said radiator and engaging said threaded bores.
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |