US4922260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable watchband with embedded antenna
Assignee: Seiko Epson Corp
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Filing: 1989-01-18
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Granted: 1990-05-01
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Expires: 2009-01-18
Abstract
Abstract The present invention provides a means of maintaining a constant tuned frequency as a wrist band antenna is lengthened and shortened. As a wrist band antenna is lengthened, the inductance of the antenna is generally increased. The present invention provides a wrist band the length of the antenna. As the wrist band is lengthened the inductance increases and the capacitance decreases thereby maintaining the tuned frequency substantially constant.
Inventors
- 👤 Garold B. Gaskill
- 👤 Michael Miles
- 👤 Clifford B. Schrock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:34
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/273
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
105 words
A radio receiver comprising, in combination: a dielectric strip which forms a portion of a wristband; a plurality of capacitor plates disposed on both sides of said dielectric strip to form discrete capacitors, said capacitors being connected to one another in series; to form a wristband loop antenna having predetermined inductance; means connecting one end of said discrete capacitors to said radio receiver, the particular capacitor connected to said receiver being selectable; whereby more discrete capacitors can be included in said wristband loop antenna to form a longer wristband with more inductance and less series capacitance, thereby no changing the tuned frequency of said antenna.
Claim 2
Dependent Claim
105 words
A radio receiver comprising, in combination: a dielectric strip which forms a portion of a wristband; a plurality of capacitor plates disposed on both sides of said dielectric strip to form discrete capacitors, said capacitors being connected to one another in series; to form a wristband loop antenna having predetermined inductance; means connecting one end of said discrete capacitors to said radio receiver, the particular capacitor connected to said receiver being selectable; whereby more discrete capacitors can be included in said wristband loop antenna to form a longer wristband with more inductance and less series capacitance, thereby no changing the tuned frequency of said antenna.
Claim 3
Dependent Claim
133 words
An adjustable length band structure having an antenna embedded therein comprising: (a) a flexible, longitudinal, electrically non-conducting base having an upper major surface and a lower major surface; (b) a first plurality of spaced apart, electrically conductive pads disposed on the upper surface of said base; and (c) a second plurality of spaced apart, electrically conductive pads disposed on the lower surface of said base in operative relationship to said first plurality of pads and correspondingly offset therefrom, so that at least one of said first plurality of pads overlaps a portion of two corresponding pads in said second plurality of pads and at least one of said second plurality of pads overlaps a portion of two corresponding pads in said first plurality of pads, forming an antenna with a predetermined tuning frequency.
Claim 4
Dependent Claim
133 words
An adjustable length band structure having an antenna embedded therein comprising: (a) a flexible, longitudinal, electrically non-conducting base having an upper major surface and a lower major surface; (b) a first plurality of spaced apart, electrically conductive pads disposed on the upper surface of said base; and (c) a second plurality of spaced apart, electrically conductive pads disposed on the lower surface of said base in operative relationship to said first plurality of pads and correspondingly offset therefrom, so that at least one of said first plurality of pads overlaps a portion of two corresponding pads in said second plurality of pads and at least one of said second plurality of pads overlaps a portion of two corresponding pads in said first plurality of pads, forming an antenna with a predetermined tuning frequency.
Claim 5
Dependent Claim
38 words
The adjustable length band structure in accordance with claim 2, further comprising: (d) a first electrically non-conducting shell associated with each of said first plurality of pads and adapted to mount thereon in order to cover said pads.
Claim 6
Dependent Claim
52 words
The adjustable length band structure in accordance with claim 2 wherein the length of said band can be shortened by removing one of said first plurality of pads and corresponding overlapped portions of two of said second plurality of pads, said pad removals having substantially no effect on said antenna tuning frequency.
Claim 7
Dependent Claim
67 words
In an adjustable length longitudinal watchband comprising a dielectric substrate having an upper major surface and a lower major surface, an antenna having a predetermined tuning frequency comprising: (a) upper electrical conductive means disposed on the upper major surface of said substrate and forming one capacitor plate; and (b) lower electrical conductive means disposed on the lower major surface of said substrate and forming another capacitor plate.
Claim 8
Dependent Claim
67 words
In an adjustable length longitudinal watchband comprising a dielectric substrate having an upper major surface and a lower major surface, an antenna having a predetermined tuning frequency comprising: (a) upper electrical conductive means disposed on the upper major surface of said substrate and forming one capacitor plate; and (b) lower electrical conductive means disposed on the lower major surface of said substrate and forming another capacitor plate.
Claim 9
Dependent Claim
33 words
The antenna having a predetermined tuning frequency in accordance with claim 5 wherein a portion of said watchband can be removed without affecting said predetermined antenna tuning frequency of the remaining watchband portion.
Claim 10
Dependent Claim
27 words
The antenna having a predetermined tuning frequency in accordance with claim 6 wherein said electrical conductive means have uniform cross sections along the length of said watchband.
Claim 11
Dependent Claim
27 words
The antenna having a predetermined tuning frequency in accordance with claim 6 wherein said electrical conductive means have non-uniform cross sections along the length of said watchband.
Claim 12
Dependent Claim
41 words
The antenna having a predetermined tuning frequency in accordance with claim 6 wherein said electrical conductive means are disposed on said substrate forming a predetermined shape so that said predetermined tuning frequency is unaffected by removing any portion of said watchband.
Claim 13
Dependent Claim
75 words
In a watchband comprising a dielectric substrate having an upper major surface and a lower major surface, a loop antenna having a predetermined inductance and tuning frequency, the improvement comprising a trapezoidally shaped electrical conductor disposed on the upper major surface of said dielectric substrate to form a first capacitor plate and an identically shaped electrical conductor disposed on the lower major surface of said dielectric substrate in one-to-one correspondence with said first capacitor plate.
Claim 14
Dependent Claim
75 words
In a watchband comprising a dielectric substrate having an upper major surface and a lower major surface, a loop antenna having a predetermined inductance and tuning frequency, the improvement comprising a trapezoidally shaped electrical conductor disposed on the upper major surface of said dielectric substrate to form a first capacitor plate and an identically shaped electrical conductor disposed on the lower major surface of said dielectric substrate in one-to-one correspondence with said first capacitor plate.
Claim 15
Dependent Claim
75 words
In a watchband comprising a dielectric substrate having an upper major surface and a lower major surface, a loop antenna having a predetermined inductance and tuning frequency, the improvement comprising a parallelogram shaped electrical conductor disposed on the upper major surface of said dielectric substrate to form a first capacitor plate and an identically shaped electrical conductor disposed on the lower major surface of said dielectric substrate in one-to-one correspondence with said first capacitor plate.
Claim 16
Dependent Claim
75 words
In a watchband comprising a dielectric substrate having an upper major surface and a lower major surface, a loop antenna having a predetermined inductance and tuning frequency, the improvement comprising a parallelogram shaped electrical conductor disposed on the upper major surface of said dielectric substrate to form a first capacitor plate and an identically shaped electrical conductor disposed on the lower major surface of said dielectric substrate in one-to-one correspondence with said first capacitor plate.
Claim 17
Dependent Claim
85 words
In a watchband comprising a dielectric substrate having an upper major surface and a lower major surface, a loop antenna having a predetermined inductance and tuning frequency, the improvement comprising an electrical conductor having a plurality of windows, said electrical conductor being disposed on the upper major surface of said dielectric substrate to form a first capacitor plate and an identically shaped electrical conductor having a plurality of windows, said identically shaped electrical conductor being disposed on the lower major surface said first capacitor plate.
Claim 18
Dependent Claim
85 words
In a watchband comprising a dielectric substrate having an upper major surface and a lower major surface, a loop antenna having a predetermined inductance and tuning frequency, the improvement comprising an electrical conductor having a plurality of windows, said electrical conductor being disposed on the upper major surface of said dielectric substrate to form a first capacitor plate and an identically shaped electrical conductor having a plurality of windows, said identically shaped electrical conductor being disposed on the lower major surface said first capacitor plate.
References Cited (Backward Citations)
US4769656A
Cited
US4754285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-30 | 1993-10-30 | 1994-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-30 | 1997-10-30 | 1998-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-30 | 2001-10-30 | 2002-05-01 | $7700.00 | Window Closed / Lapsed |