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US3745583A Expired / Lapsed US ⏱️ 0.0 years remaining

Omni-directional transmitting & receiving antenna

Assignee: VORTA SYST Inc
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Filing: 1971-11-26
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Granted: 1973-07-10
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Expires: 1991-11-26
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Abstract

Abstract There is disclosed an omni-directional transmitting and receiving antenna which, in the preferred embodiment, is particularly suitable for use on the ship to shore marine frequencies. The antenna comprises a non-conductive hollow outer shell; a first substantially circularly shaped conductive element located within the outer shell and wherein the first conductive element contains a discontinuity; a second circularly shaped continuous conductive element located within the outer shell adjacent to and coaxially with the first conductive element; and a first means for electrically connecting the first conductive element to the second conductive element.

Inventors

  • 👤 L Herbert

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 16:08
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/40; H01Q21/00; H01Q21/06; H01Q7/00; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/26; H01Q9/265

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 224 words
An omni-directional marine band transmitting and receiving antenna comprising: a non-conductive hollow outer shell; a first substantially circularly shaped tubular conductive element located within said outer shell and wherein said first conductive element contains a discontinuity therein; a second continuous circularly shaped tubular conductive element located within said outer shell adjacent to and coaxial with said first conductive element, wherein the radius of said second conductive element is equal to the radius of said first conductive element, wherein said first conductive element and said second conductive element comprise the same material and wherein said second conductive element is in closer proximity to the opening in said hollow shell than said first conductive element; a rigid means for electrically connecting said first conductive element to said second conductive element wherein said rigid means is connected to said first conductive element adjacent to said discontinuity; a coaxial lead wire for connecting said antenna to a utilization device, wherein the center cable of said lead wire is electrically connected to said first conductive element and wherein the shield of said lead wire is electrically connected to said second conductive element; a polyurethane substance placed within said hollow shell whereby said first and second elements are immobilized; and a non-conductive cover means for sealing the opening of said hollow shell thereby making said antenna impervious to corrosive elements.
Claim 2
Dependent Claim 224 words
An omni-directional marine band transmitting and receiving antenna comprising: a non-conductive hollow outer shell; a first substantially circularly shaped tubular conductive element located within said outer shell and wherein said first conductive element contains a discontinuity therein; a second continuous circularly shaped tubular conductive element located within said outer shell adjacent to and coaxial with said first conductive element, wherein the radius of said second conductive element is equal to the radius of said first conductive element, wherein said first conductive element and said second conductive element comprise the same material and wherein said second conductive element is in closer proximity to the opening in said hollow shell than said first conductive element; a rigid means for electrically connecting said first conductive element to said second conductive element wherein said rigid means is connected to said first conductive element adjacent to said discontinuity; a coaxial lead wire for connecting said antenna to a utilization device, wherein the center cable of said lead wire is electrically connected to said first conductive element and wherein the shield of said lead wire is electrically connected to said second conductive element; a polyurethane substance placed within said hollow shell whereby said first and second elements are immobilized; and a non-conductive cover means for sealing the opening of said hollow shell thereby making said antenna impervious to corrosive elements.
Claim 3
Dependent Claim 48 words
The antenna of claim 1 wherein said first conductive element comprises a 19 3/8 inch tubular aluminum conductor, wherein said second conductive element comprises a 19 1/2 inch tubular aluminum conductor, and wherein said second aluminum conductor is spaced 3/16 of an inch from said first aluminum conductor.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-07-09 1977-01-08 1977-07-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-07-09 1981-01-08 1981-07-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-07-09 1985-01-08 1985-07-10 $7700.00 Window Closed / Lapsed

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