Patent US3418223A successfully refreshed from Google Patents.
Patent US4460896A successfully refreshed from Google Patents.
US4460896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna with tunable helical resonator
Assignee: Individual
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Filing: 1982-05-17
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Granted: 1984-07-17
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Expires: 2002-05-17
Abstract
Abstract An antenna suitable for use in the high frequency (HF) ranges includes a resonator tunable over a predetermined frequency band. The resonator consists of an insulated wire wound over a dielectric rod. Tuning is effected by sliding a metallic sleeve disposed in frictional contact over the wire. A multiplicity of these resonator units may be mounted on a single collar at different angles. Each of the resonator units will respond to a particular frequency. The remaining devices operate as a load on the antenna assembly. The antenna assembly may also be mounted on a conventional mobile antenna by means of an adaptor unit.
Inventors
- 👤 Clarence F. Shmitka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:00
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/30; H01Q5/00; H01Q5/40; H01Q9/00; H01Q9/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
99 words
A mechanical coupling assembly permitting sliding frictional engagement comprising: a. elongated core means; b. an insulated wire wound over said core means; c. a sleeve encircling said core means and wire and slideable thereover; and d. A flexible cylindrical sheath disposed over said sleeve, said sheath extending over the ends of said sleeve to provide frictional contact between said core means and wire and sleeve while permitting said sleeve to slide over said core means and wire; e. whereby the portions of said sheath extending over the ends of said sleeve releasably interlock with the core means and wire.
Claim 2
Dependent Claim
99 words
A mechanical coupling assembly permitting sliding frictional engagement comprising: a. elongated core means; b. an insulated wire wound over said core means; c. a sleeve encircling said core means and wire and slideable thereover; and d. A flexible cylindrical sheath disposed over said sleeve, said sheath extending over the ends of said sleeve to provide frictional contact between said core means and wire and sleeve while permitting said sleeve to slide over said core means and wire; e. whereby the portions of said sheath extending over the ends of said sleeve releasably interlock with the core means and wire.
Claim 3
Dependent Claim
20 words
A coupling assembly as defined in claim 1 wherein an additional plastic sheath is disposed over said core means wire.
Claim 4
Dependent Claim
26 words
A coupling assembly as defined in claim 2 wherein said core means includes a portion mode of a dielectric material and said sleeve is of metal.
Claim 5
Dependent Claim
92 words
A mechanical coupling permitting sliding frictional engagement comprising: a. a rod; b. a sleeve encircling said rod and slidable thereover; and c. a plastic sheath disposed over said sleeve, said sheath extending over the ends of said sleeve to provide frictional engagement between said rod and sleeve while permitting said sleeve to slide over said rod; d. wherein an additional plastic sheath is disposed over said rod, e. wherein said rod is of a dielectric material and said sleeve is of metal, f. wherein an insulated wire is wound over said rod.
Claim 6
Dependent Claim
92 words
A mechanical coupling permitting sliding frictional engagement comprising: a. a rod; b. a sleeve encircling said rod and slidable thereover; and c. a plastic sheath disposed over said sleeve, said sheath extending over the ends of said sleeve to provide frictional engagement between said rod and sleeve while permitting said sleeve to slide over said rod; d. wherein an additional plastic sheath is disposed over said rod, e. wherein said rod is of a dielectric material and said sleeve is of metal, f. wherein an insulated wire is wound over said rod.
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) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |