US4097867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helical antenna encased in fiberglass body
Assignee: Individual
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Filing: 1975-09-23
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Granted: 1978-06-27
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Expires: 1995-09-23
Abstract
Abstract A method of forming a top-loaded waveguide for radio antennas and the structure of said waveguide comprising the steps of helically winding a wire around a removable mandrel, encasing said mandrel and wire with impregnated fiberglass, encasing said mandrel, wire, and fiberglass with a sheath, liquefying the fiberglass by heating such that the wire is encapsulated by the fiberglass, and removing the mandrel. Top and bottom ferrules are provided for electrically connecting the ends of the wire.
Inventors
- 👤 James Joseph Eroncig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:33
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/40; H01Q1/36; H01Q1/362; H01Q9/00; H01Q9/04; H01Q9/06; H01Q9/14; H01Q9/145
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
190 words
A wave guide antenna comprising a hollow fiberglass antenna body encapsulating and totally surrounding a coiled electrically conductive top-loaded wire, said coiled wire being tightly would in helical coils at the top end of said antenna body and increasing in spacing distance between the helical coils as the coils approach the bottom end of said antenna body to provide for interception of ultra short waves, said encapsulated helical wires serving to provide strength to said fiberglass antenna body, a cellophane sheath surrounding and merged into the exterior surface of said fiberglass antenna body, said sheath providing a smooth exterior surface to said antenna, a base ferrule secured to the bottom end of said antenna and electrically connected to the end of wire proximate thereto, a top ferrule secured to the top end of said antenna body and electrically connected to the other end of wire proximate thereto, said top ferrule being provided with a locking mechanism adapted to secure a tuning shaft in an optimum position, said tuning shaft being slideably adjustable along the central axis of said antenna body and being in direct electrical contact with said top ferrule.
Claim 2
Dependent Claim
190 words
A wave guide antenna comprising a hollow fiberglass antenna body encapsulating and totally surrounding a coiled electrically conductive top-loaded wire, said coiled wire being tightly would in helical coils at the top end of said antenna body and increasing in spacing distance between the helical coils as the coils approach the bottom end of said antenna body to provide for interception of ultra short waves, said encapsulated helical wires serving to provide strength to said fiberglass antenna body, a cellophane sheath surrounding and merged into the exterior surface of said fiberglass antenna body, said sheath providing a smooth exterior surface to said antenna, a base ferrule secured to the bottom end of said antenna and electrically connected to the end of wire proximate thereto, a top ferrule secured to the top end of said antenna body and electrically connected to the other end of wire proximate thereto, said top ferrule being provided with a locking mechanism adapted to secure a tuning shaft in an optimum position, said tuning shaft being slideably adjustable along the central axis of said antenna body and being in direct electrical contact with said top ferrule.
Claim 3
Dependent Claim
229 words
A waveguide antenna comprising a hollow fiberglass antenna body completely surrounding a coiled metal wire helically wound and totally contained within said antenna body, said coiled metal wire being tightly wound at the top end of said antenna body and increasing in spacing distance between the helical coils as said coils approach the bottom end of said antenna body, said coiled metal wire providing a metal structure for the interception of transmitted ultra short waves, said helical wires providing strength and rigidity to said fiberglass body, said fiberglass body providing strength and flexibility to said coiled metal wire, a cellophane sheath surrounding said fiberglass body and merged therewith, said sheath providing a smooth exterior surface to said antenna body, a base ferrule secured to the bottom end of said antenna body, said base ferrule providing a central aperture for allowing the bottom end of said wire to pass therethrough, and an electrically conductive top ferrule secured to the top end of said antenna body being electrically connected to the top end of said metal wire, said top ferrule being further provided with a slideably adjustable electrically conductive tuning shaft, said tuning shaft being slideable with a centrally aligned aperture of said top ferrule, said tuning shaft being in electrical contact with said top ferrule and a locking screw which serves to lock said shaft in an optimum tuned position.
Claim 4
Dependent Claim
229 words
A waveguide antenna comprising a hollow fiberglass antenna body completely surrounding a coiled metal wire helically wound and totally contained within said antenna body, said coiled metal wire being tightly wound at the top end of said antenna body and increasing in spacing distance between the helical coils as said coils approach the bottom end of said antenna body, said coiled metal wire providing a metal structure for the interception of transmitted ultra short waves, said helical wires providing strength and rigidity to said fiberglass body, said fiberglass body providing strength and flexibility to said coiled metal wire, a cellophane sheath surrounding said fiberglass body and merged therewith, said sheath providing a smooth exterior surface to said antenna body, a base ferrule secured to the bottom end of said antenna body, said base ferrule providing a central aperture for allowing the bottom end of said wire to pass therethrough, and an electrically conductive top ferrule secured to the top end of said antenna body being electrically connected to the top end of said metal wire, said top ferrule being further provided with a slideably adjustable electrically conductive tuning shaft, said tuning shaft being slideable with a centrally aligned aperture of said top ferrule, said tuning shaft being in electrical contact with said top ferrule and a locking screw which serves to lock said shaft in an optimum tuned position.
References Cited (Backward Citations)
US2763003A
Cited
US2966679A
Cited
US3082134A
Cited
US3172109A
Cited
US3400403A
Cited
US3543275A
Cited
US3828353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-26 | 1981-12-26 | 1982-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-26 | 1985-12-26 | 1986-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-26 | 1989-12-26 | 1990-06-27 | $7700.00 | Window Closed / Lapsed |