Patent US5220338A successfully refreshed from Google Patents.
US5220338A
Expired / Lapsed
US
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Antenna element
Assignee: CREATIC JAPAN Inc A CORP OF JAPAN
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Filing: 1991-04-23
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Granted: 1993-06-15
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Expires: 2011-04-23
Abstract
Abstract An antenna element comprising a hollow pipe made of a magnetic material said hollow pipe having an axial bore extending therethrough; a solid or hollow metal bar made of at least one metal selected from the group consisting of aluminum, titanium, copper and alloys thereof, said metal bar being inserted into the axial bore; an insulating material existing between the hollow pipe and the metal bar; and an electrically conductive wire being wound on at least a part of an outer surface of the hollow pipe, said electrically conductive wire having been coated with an insulating material.
Inventors
- 👤 Atsushi Matsushita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:09
CPC Classifications
H; H01; H01Q; H01Q7/00; H01Q7/06; H01Q7/08
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
105 words
An antenna element to receive signals of VHF and UHF comprising a hollow pipe made of an amorphous magnetic metal, said hollow pipe having an axial bore extending therethrough; a metal bar made of at least one metal selected from the group consisting of aluminum, titanium, copper and alloys thereof, said metal bar being inserted into the axial bore, an insulating material located between the hollow pipe and the metal bar, and an electrically conductive wire being wound on at least a part of an outer surface of the hollow pipe, said electrically conductive wire having been coated with an insulating material prior to winding.
Claim 2
Dependent Claim
105 words
An antenna element to receive signals of VHF and UHF comprising a hollow pipe made of an amorphous magnetic metal, said hollow pipe having an axial bore extending therethrough; a metal bar made of at least one metal selected from the group consisting of aluminum, titanium, copper and alloys thereof, said metal bar being inserted into the axial bore, an insulating material located between the hollow pipe and the metal bar, and an electrically conductive wire being wound on at least a part of an outer surface of the hollow pipe, said electrically conductive wire having been coated with an insulating material prior to winding.
Claim 3
Dependent Claim
19 words
An antenna element according to claim 1, wherein the hollow pipe is formed from a sheet shaped amorphous metal.
Claim 4
Dependent Claim
27 words
An antenna element according to claim 1, wherein the hollow pipe is formed by multiple numbers selected from the group consisting of fiber-, bar- or strip-shaped materials.
Claim 5
Dependent Claim
35 words
An antenna element according to claim 3, wherein the hollow pipe is formed by rolling an insulating film on which the multiple numbers of fiber-, bar- or strip-shaped amorphous materials have been laid in parallel.
Claim 6
Dependent Claim
25 words
An antenna element according to claim 1, wherein the amorphous metal has a property of maximum magnetic permeability of greater than 100,000 μ max .
Claim 7
Dependent Claim
37 words
An antenna element according to claim 1, wherein the metal bar is sized by 10 to 2,000 mm in length, and the hollow pipe is not shorter than 10 mm and not longer than the metal bar.
Claim 8
Dependent Claim
31 words
An antenna element according to claim 1, wherein the metal bar is sized 200 to 500 mm in length, and the hollow pipe is sized 50 to 200 mm in length.
Claim 9
Dependent Claim
15 words
An antenna element according to claim 1, wherein the metal bar is an aluminum bar.
Claim 10
Dependent Claim
40 words
An antenna element according to claim 1, wherein the insulating material located between the hollow pipe and the metal bar is an insulating film made of a member selected from the group consisting of organic polymer compounds and metal oxides.
Claim 11
Dependent Claim
27 words
An antenna element according to claim 1, wherein one end of the electrically conductive wire is connected with a receiving unit and another end is kept open.
Claim 12
Dependent Claim
27 words
An antenna element according to claim 1, wherein one edge of the hollow pipe and the corresponding edge of the metal bar are at the same level.
Claim 13
Dependent Claim
51 words
An antenna element according to claim 11, wherein one end of the electrically conductive wire corresponding to said edge of said hollow pipe and said edge of said metal bar which are at the same level is connected with a receiving unit and another end of said wire is kept open.
Claim 14
Dependent Claim
15 words
An antenna element according to claim 1, wherein the metal bar is a solid one.
Claim 15
Dependent Claim
15 words
An antenna element according to claim 1, wherein the metal bar is a hollow one.
References Cited (Backward Citations)
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Cited
US4205318A
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US4375642A
Cited
US4442438A
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US4458248A
Cited
US5081469A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-06-14 | 1996-12-14 | 1997-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-14 | 2000-12-14 | 2001-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-14 | 2004-12-14 | 2005-06-15 | $7700.00 | Window Closed / Lapsed |