Patent US3971029A successfully refreshed from Google Patents.
US3971029A
Expired / Lapsed
US
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Window antenna device for use in motor vehicle
Assignee: Toyota Motor Corp
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Filing: 1974-10-03
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Granted: 1976-07-20
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Expires: 1994-10-03
Abstract
Abstract A radio antenna device having an antenna wire and a gain increasing antenna secured to the rear window of motor vehicle in the same manner as is used for a moisture preventive heat wire. An antenna wire is secured to the rear window of a motor vehicle in an attempt to reduce such disturbance in receiving a radio wave, which accrues from an engine, electric generator and electric motor mounted on a motor vehicle or for the purpose of eliminating a space for mounting an antenna, while a gain increasing antenna is provided for compensating for the reduction in radio-wave receiving level, which is caused by shielding action of a moisture preventive heat wire which is secured to the rear window or a portion of a vehicle body, which extends along the periphery of the rear window.
Inventors
- 👤 Taketsugu Torii
- 👤 Minoru Nishio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:06
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/1271; H01Q1/1278
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
79 words
A window antenna device for use in a motor vehicle, comprising an antenna wire secured to the rear window of a motor vehicle in the same manner as is used for a moisture preventive heater wire, a moisture preventive heater wire, being provided on the rear window and a gain increasing antenna wire which is permanently electrically isolated on the window so as to be electrically floating extending substantially in parallel with said antenna wire on said rear window.
Claim 2
Dependent Claim
79 words
A window antenna device for use in a motor vehicle, comprising an antenna wire secured to the rear window of a motor vehicle in the same manner as is used for a moisture preventive heater wire, a moisture preventive heater wire, being provided on the rear window and a gain increasing antenna wire which is permanently electrically isolated on the window so as to be electrically floating extending substantially in parallel with said antenna wire on said rear window.
Claim 3
Dependent Claim
43 words
A window antenna device for use in a motor vehicle as set forth in claim 1, wherein said antenna wire and said gain increasing antenna wire are provided on the rear window of said vehicle in parallel with said moisture preventive heater wire.
Claim 4
Dependent Claim
68 words
A window antenna device, comprising an elongated antenna wire fixed to a window, coupling means for electrically connecting said antenna wire to a receiver remote from said window, and auxiliary means for increasing the gain of said antenna wire including an electrically isolated elongated wire spaced from said antenna wire and fixed to said window substantially in parallel with said antenna wire, and isolated wire being electrically floating.
Claim 5
Dependent Claim
68 words
A window antenna device, comprising an elongated antenna wire fixed to a window, coupling means for electrically connecting said antenna wire to a receiver remote from said window, and auxiliary means for increasing the gain of said antenna wire including an electrically isolated elongated wire spaced from said antenna wire and fixed to said window substantially in parallel with said antenna wire, and isolated wire being electrically floating.
Claim 6
Dependent Claim
28 words
A window antenna device as set forth in claim 3, further comprising conductor means fixed to said window for heating said window to prevent accumulation of moisture thereon.
Claim 7
Dependent Claim
24 words
A window antenna device as set forth in claim 4, wherein said conductor means includes a heater wire substantially parallel to said antenna 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) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |