Patent US2273667A successfully refreshed from Google Patents.
Patent US4760401A successfully refreshed from Google Patents.
US4760401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable rod antenna
Assignee: General Research of Electronics Inc
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Filing: 1986-01-28
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Granted: 1988-07-26
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Expires: 2006-01-28
Abstract
Abstract A removable rod antenna comprises a first fitting for rigidly coupling to a radio body; an elongate rod-like antenna body; a second fitting of complementary configuration for engaging the first fitting, and a retaining arrangement for holding the second fitting in captive relation on the antenna. Respective mating fastener portions are defined respectively on the first and second fittings for removably engaging each other in electrically conductive contact to thereby removably mount the antenna body to the radio body in electrically conductive contact with the first fitting thereon.
Inventors
- 👤 Kazuyoshi Imazeki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:52
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/242; H01Q1/08; H01Q1/088
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
320 words
a removable rod antenna comprising: first fitting means for rigidly mounting to a radio body; elongate antenna body means; second fitting means of complementary configuration to the configuration of said first fitting means for removably engaging said first fitting means; a retaining means for holding said second fitting means in captive relation on said antenna body means, such that the antenna is completely removed from the radio body both mechanically and electrically upon disengagement of the second fitting means from the first fitting means; and mating coupling means defined respectively on said first and second fitting means for casing the first and second fitting means to be engaged in electrically conductive contact with each other so as to thereby removably mount said antenna body means to said radio body and in conductive contact with said first fitting means which first fitting means is rigidly mounted to the radio body; a terminal comprising a generally annular member having a radially outwardly extending connector portion; and terminal mounting means comprising a first threaded fastener portion formed on said first fitting means and a threaded fastener of complementary form to, and for mating with, said first threaded fastener portion; one of said first threaded fastener portion and said threaded fastener comprising an externally threaded member of complementary outer diameter to, and for receiving, said annular member closely fitted therearound and, for engaging said annular member in electrically conductive contact with at least said threaded fastener and for rigidly coupling said first fitting means to the radio body; wherein said antenna body means comprises an elongate cylindrical body; wherein said second fitting means has a generally cylindrical, depending, slotted skirt for frictionally engaging and slideably receiving said elongate cylindrical body therethrough; and wherein said retaining means includes respective increased diameter portions at axially spaced locations on said antenna body means of diameter greater than that of said depending skirt of said second fitting means.
Claim 2
Dependent Claim
320 words
a removable rod antenna comprising: first fitting means for rigidly mounting to a radio body; elongate antenna body means; second fitting means of complementary configuration to the configuration of said first fitting means for removably engaging said first fitting means; a retaining means for holding said second fitting means in captive relation on said antenna body means, such that the antenna is completely removed from the radio body both mechanically and electrically upon disengagement of the second fitting means from the first fitting means; and mating coupling means defined respectively on said first and second fitting means for casing the first and second fitting means to be engaged in electrically conductive contact with each other so as to thereby removably mount said antenna body means to said radio body and in conductive contact with said first fitting means which first fitting means is rigidly mounted to the radio body; a terminal comprising a generally annular member having a radially outwardly extending connector portion; and terminal mounting means comprising a first threaded fastener portion formed on said first fitting means and a threaded fastener of complementary form to, and for mating with, said first threaded fastener portion; one of said first threaded fastener portion and said threaded fastener comprising an externally threaded member of complementary outer diameter to, and for receiving, said annular member closely fitted therearound and, for engaging said annular member in electrically conductive contact with at least said threaded fastener and for rigidly coupling said first fitting means to the radio body; wherein said antenna body means comprises an elongate cylindrical body; wherein said second fitting means has a generally cylindrical, depending, slotted skirt for frictionally engaging and slideably receiving said elongate cylindrical body therethrough; and wherein said retaining means includes respective increased diameter portions at axially spaced locations on said antenna body means of diameter greater than that of said depending skirt of said second fitting means.
Claim 3
Dependent Claim
42 words
An antenna according to claim 1 wherein said mating coupling means comprises a threaded portion on said first fitting means and a mating threaded portion on said second fitting means for threaded engagement with the threaded portion on said first fitting means.
Claim 4
Dependent Claim
33 words
An antenna according to claim 1 wherein said antenna body means comprises a plurality of telescopically engaged antenna sections, said second fitting means being slideably engaged about an outermost one of said sections.
Claim 5
Dependent Claim
68 words
An antenna according to claim 1 wherein said first and second fitting means have complementary engageable threads thereon comprising said mating coupling means and wherein said second fitting means further includes a shoulder portion for engaging the first fitting means as the second fitting means is advanced relative to the first fitting means, thereby defining maximum advancement of said second fitting means relative to said first fitting means.
Claim 6
Dependent Claim
55 words
An antenna according to claim 1 wherein said first and second fitting means have coaxially alignable through openings, said through opening of said second fitting means extending interiorly of said radio body, said antenna body means being slideable with respect to said aligned through openings for at least partial retraction thereof within said radio body.
Claim 7
Dependent Claim
40 words
An antenna according to claim 1, wherein said second fitting means includes manually graspable means accessible to an operator for engagement and disengagement thereof with said first fitting means manually and without the need for any tool or the like.
Claim 8
Dependent Claim
26 words
An antenna according to claim 4 wherein said second fitting means is externally threaded and has a shoulder portion extending radially outwardly of said external thread.
Claim 9
Dependent Claim
50 words
An antenna according to claim 5 wherein said retaining means comprises respective increased diameter portions at one axial end of said antenna body means and at a location thereon axially spaced from said one axial end, and of greater diameter than the diameter of said second fitting means through opening.
References Cited (Backward Citations)
US2524534A
Cited
US2878303A
Cited
US3142721A
Cited
US3408652A
Cited
US3798651A
Cited
US3876277A
Cited
US3944722A
Cited
US3984076A
Cited
US3969728A
Cited
US4021809A
Cited
JPS58162104A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-26 | 1992-01-25 | 1992-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-26 | 1996-01-25 | 1996-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-26 | 2000-01-25 | 2000-07-26 | $7700.00 | Window Closed / Lapsed |