US5757336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna unit
Assignee: SMK Corp
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Filing: 1995-10-06
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Granted: 1998-05-26
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Expires: 2015-10-06
Abstract
Abstract An antenna unit having an antenna casing secured to a signal transmitting and receiving circuit. An antenna cover is slidably coupled to the antenna casing. An antenna element is provided inside the antenna cover. A coiled spring portion connects the antenna element to the signal transmitting and receiving circuit. The antenna element and the coiled spring portion are provided as one integral coil of wire. A clip is secured to the antenna cover and is engaged with a border between the antenna element and the coiled spring portion so as to keep the antenna element stationary relative to the antenna cover, thereby keeping the electrical characteristics of the antenna element constant, even when the antenna cover is slid relative to the antenna casing. The antenna element remains connected to the signal transmitting and receiving circuit at all times.
Inventors
- 👤 Manabu Matsuoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:17
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/36; H01Q1/362; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/242; H01Q1/243; H01Q1/244
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
149 words
An antenna unit for a signal transmitting and receiving circuit in a body, said antenna unit comprising: an antenna casing adapted to be secured to said body; an antenna cover slidably coupled to said antenna casing, a pair of windows are formed in a side surface of said antenna cover through which the inside and outside of said antenna cover communicate with each other; a one-piece coiled wire including an integral antenna element provided inside said antenna cover, and an integral circuit connecting means for connecting said antenna element to said signal transmitting and receiving circuit; and locking means secured to said antenna cover and engaged with a boundary between said antenna element and said circuit connecting means, said locking means includes a clip at least partially inserted into said antenna cover through said windows to engage with said boundary between said antenna element and said circuit connecting means.
Claim 2
Dependent Claim
149 words
An antenna unit for a signal transmitting and receiving circuit in a body, said antenna unit comprising: an antenna casing adapted to be secured to said body; an antenna cover slidably coupled to said antenna casing, a pair of windows are formed in a side surface of said antenna cover through which the inside and outside of said antenna cover communicate with each other; a one-piece coiled wire including an integral antenna element provided inside said antenna cover, and an integral circuit connecting means for connecting said antenna element to said signal transmitting and receiving circuit; and locking means secured to said antenna cover and engaged with a boundary between said antenna element and said circuit connecting means, said locking means includes a clip at least partially inserted into said antenna cover through said windows to engage with said boundary between said antenna element and said circuit connecting means.
Claim 3
Dependent Claim
36 words
An antenna unit as claimed in claim 1, wherein: said clip is U-shaped and has a pair of legs defining an opening therebetween, and said clip includes protrusions extending inwardly into said opening from said legs.
Claim 4
Dependent Claim
50 words
An antenna unit as claimed in claim 1, wherein: said clip has a protrusion on an outer periphery thereof; said protrusion is protruded over an outer cylindrical surface of said antenna cover; and engaging holes are formed in the side surface of said antenna casing for elastically receiving said protrusion.
Claim 5
Dependent Claim
35 words
An antenna unit as claimed in claim 3, wherein: said antenna cover is made of an elastic material; and said clip is made of a lubricative material harder than said material of said antenna cover.
Claim 6
Dependent Claim
28 words
An antenna unit as claimed in claim 4, wherein said locking means prohibits an elastic deformation of said circuit connecting means from being transmitted to said antenna element.
Claim 7
Dependent Claim
116 words
An antenna unit for a signal transmitting and receiving circuit in a body, said antenna unit comprising: an antenna casing adapted to be secured to said body; an antenna cover slidably coupled to said antenna casing to define a hollow internal core in cooperation with said antenna casing; a one-piece coiled wire installed in said hollow internal core and electrically connected to said signal transmitting and receiving circuit; and a clip fitted transversely with respect to said antenna cover and engaged with said one-piece coiled wire for making a portion of said one-piece coiled wire stationary with respect to said antenna cover while permitting an elastic deformation of the other portion of said one-piece coiled wire.
Claim 8
Dependent Claim
116 words
An antenna unit for a signal transmitting and receiving circuit in a body, said antenna unit comprising: an antenna casing adapted to be secured to said body; an antenna cover slidably coupled to said antenna casing to define a hollow internal core in cooperation with said antenna casing; a one-piece coiled wire installed in said hollow internal core and electrically connected to said signal transmitting and receiving circuit; and a clip fitted transversely with respect to said antenna cover and engaged with said one-piece coiled wire for making a portion of said one-piece coiled wire stationary with respect to said antenna cover while permitting an elastic deformation of the other portion of said one-piece coiled wire.
Claim 9
Dependent Claim
44 words
An antenna unit as claimed in claim 6, further comprising: a groove formed in said antenna cover for receiving said clip therein, said groove being formed into a U-shape as viewed in a plane orthogonal to a longitudinal axis of said hollow internal core.
Claim 10
Dependent Claim
41 words
An antenna unit as claimed in claim 6, further comprising: a protrusion provided on said clip and radially outwardly protruded with respect to said antenna cover; a plurality of engaging holes formed through said antenna casing for engagement with said protrusion.
Claim 11
Dependent Claim
46 words
An antenna unit as claimed in claim 8, wherein said engaging holes includes a pair of holes each formed through a mold spring provided on said antenna casing by a U-shaped cut, and an elongated hole located between and in alignment with said pair of holes.
Claim 12
Dependent Claim
63 words
An antenna unit as claimed in claim 6, wherein said one-piece coiled wire has an integral large diameter portion having a first effective diameter and corresponding to the stationary portion of said one-piece coiled wire, and an integral small diameter portion having a second effective diameter smaller than said first effective diameter and corresponding to the deformable portion of said one-piece coiled wire.
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) | 2001-05-25 | 2001-11-24 | 2002-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-25 | 2005-11-24 | 2006-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-25 | 2009-11-24 | 2010-05-26 | $7700.00 | Window Closed / Lapsed |