US3728732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window glass antenna
Assignee: AGC Inc
•
Filing: 1970-12-02
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Granted: 1973-04-17
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Expires: 1990-12-02
Abstract
Abstract A window glass antenna having separate antenna elements for AM and FM radio reception. The antenna elements are connected to a radio receiver through a selector switch, permitting either the FM or AM antenna to be coupled to the radio receiver.
Inventors
- 👤 T Igarashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:33
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/1271; B; B60; B60J; B60J1/00; B60J1/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
176 words
A window glass antenna particularly suitable for use with automotive vehicles comprising: a first antenna element designed to receive only FM radio broadcasts, a second antenna element separate from said first antenna element and designed to receive only AM radio broadcasts, said first and second antenna elements formed into different respective shapes and placed on a glass sheet adapted to be mounted to an automotive vehicle body, said first and second antenna elements positioned on said glass sheet so as to minimize the capacitive effect of said automotive vehicle body on said antenna elements, one of said first and second antenna elements including a pair of symmetrical arms which extend substantially parallel to a lower edge of said glass sheet, each of said symmetrical arms including an upturned end portion; and the other of said first and second antenna elements positioned substantially at the center of said glass sheet and extending from said lower edge thereof toward an upper edge thereof terminating in a pair of symmetrical arms which extend substantially parallel to said upper edge.
Claim 2
Dependent Claim
176 words
A window glass antenna particularly suitable for use with automotive vehicles comprising: a first antenna element designed to receive only FM radio broadcasts, a second antenna element separate from said first antenna element and designed to receive only AM radio broadcasts, said first and second antenna elements formed into different respective shapes and placed on a glass sheet adapted to be mounted to an automotive vehicle body, said first and second antenna elements positioned on said glass sheet so as to minimize the capacitive effect of said automotive vehicle body on said antenna elements, one of said first and second antenna elements including a pair of symmetrical arms which extend substantially parallel to a lower edge of said glass sheet, each of said symmetrical arms including an upturned end portion; and the other of said first and second antenna elements positioned substantially at the center of said glass sheet and extending from said lower edge thereof toward an upper edge thereof terminating in a pair of symmetrical arms which extend substantially parallel to said upper edge.
Claim 3
Dependent Claim
75 words
A window glass antenna as in claim 1, further comprising: means coupled to said first and second antenna elements for connecting said elements to a radio receiver, said means including a first lead wire coupled to said first antenna element, a second lead wire coupled to said second antenna element, and, a selector switch coupled to said first and second lead wires for selectively interconnecting said first or second antenna element to said radio receiver.
Claim 4
Dependent Claim
34 words
A window glass antenna as in claim 1, in which said first and second antenna elements are comprised of printed conductive lines consisting of an electroconductive composition including a metal and a metal oxide.
Claim 5
Dependent Claim
24 words
A window glass antenna as in claim 1, in which said antenna elements are comprised of a conductive line consisting of an electroconductive solder.
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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |