Patent US3958245A successfully refreshed from Google Patents.
US3958245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna windshield
Assignee: PPG Industries Inc
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Filing: 1974-03-27
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Granted: 1976-05-18
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Expires: 1994-03-27
Abstract
Abstract A laminated bilayer antenna windshield having an outer glass sheet laminated to an inner sheet of polyvinyl butyral carring an elongated conductive element, such as a wire, in close relation to the interfacial surface with the outer glass sheet. The bilayer antenna windshield has a higher Q-value than similar bilayer laminated antenna windshields provided with a layer of polyvinyl butyral carrying the elongated electroconductive element in spaced relation to said interfacial surface or than the Q-value of conventional trilayer windshields having two glass sheets laminated to opposite sides of a layer of polyvinyl butyral carrying the elongated electroconductive element.
Inventors
- 👤 Joseph P. Cherenko
- 👤 Hugh E. Shaw, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:49
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10761; B32B17/10009; B32B17/10018; B32B17/10036; B32B17/10165; B32B17/10376; H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/1271; B32B2327/00; B32B2327/12; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
A transparent laminated antenna windshield comprising a single sheet of glass, a layer of polyvinyl butyral having elongated wire of electroconductive material embedded in said layer in close juxtaposition to but spaced from one surface thereof, said layer and wire laminated to said glass sheet with said one surface bonded to the interior surface of said sheet of glass, said wire being adapted for coupling to a radio for use as an antenna circuit element when said windshield is installed in a vehicle, the circuit formed on said coupling having a higher Q-value than a similar circuit formed on a windshield similarly installed but also comprising a second sheet of glass laminated to said opposite surface of said layer of polyvinyl butyral.
Claim 2
Dependent Claim
122 words
A transparent laminated antenna windshield comprising a single sheet of glass, a layer of polyvinyl butyral having elongated wire of electroconductive material embedded in said layer in close juxtaposition to but spaced from one surface thereof, said layer and wire laminated to said glass sheet with said one surface bonded to the interior surface of said sheet of glass, said wire being adapted for coupling to a radio for use as an antenna circuit element when said windshield is installed in a vehicle, the circuit formed on said coupling having a higher Q-value than a similar circuit formed on a windshield similarly installed but also comprising a second sheet of glass laminated to said opposite surface of said layer of polyvinyl butyral.
Claim 3
Dependent Claim
45 words
An antenna windshield as in claim 1, wherein said outer glass sheet is curved to have an outward facing surface of convex configuration facing away from said layer of polyvinyl butyral and said opposite surface of said layer of polyvinyl butyral has a concave configuration.
Claim 4
Dependent Claim
47 words
An antenna windshield as in claim 2, wherein said outer glass sheet has a thickness of approximately 50 to 250 mils, said layer of polyvinyl butyral has thickness of approximately 5 to 60 mils and said wire has a thickness of approximately 0.1 mil to 5 mils.
Claim 5
Dependent Claim
78 words
An antenna windshield as in claim 3, further including a thin layer of a protective film bonded to said opposite surface and taken from the class of materials consisting of polyvinyl fluoride, polyurethane, cellulose acetate-butyrate, unplasticized polyvinyl butyral, polyvinylidene chloride, polyvinylidene fluoride, polyisobutylene, polyvinyl chloride, a copolymer of vinylidene chloride and vinyl chloride, a polyolefin such as polypropylene, a polyamide, a polyester, an ethylenic ionomer and a polyallomar, and ranging from approximately 0.5 mils to 2 mils thick.
Claim 6
Dependent Claim
16 words
An antenna windshield as in claim 4, wherein said protective film consists essentially of polyvinyl fluoride.
Claim 7
Dependent Claim
22 words
An antenna windshield as in claim 2, further including a thin layer of polyvinyl fluoride bonded to said surface of concave configuration.
Claim 8
Dependent Claim
20 words
An antenna windshield as in claim 1, further including a thin layer of polyvinyl fluoride bonded to said opposite surface.
References Cited (Backward Citations)
US3810180A
Cited
US3845489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-18 | 1979-11-17 | 1980-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-18 | 1983-11-17 | 1984-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-18 | 1987-11-17 | 1988-05-18 | $7700.00 | Window Closed / Lapsed |