US3790752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heatable laminated windshield construction
Assignee: Ford Motor Co
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Filing: 1973-03-26
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Granted: 1974-02-05
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Expires: 1993-03-26
Abstract
Abstract A heatable, laminated windshield construction is disclosed in which an electrical connection is made to a transparent interlayer which has a conductive coating thereon. When power is supplied to the conductive coating, the result is a heating of the windshield. The connection to the conductive coating is completely sealed so that the moisture is unable to penetrate the laminated construction.
Inventors
- 👤 P Boaz
- 👤 R Surowiex
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:12
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10761; B32B17/10009; B32B17/10036; B32B17/10165; B32B17/10174; B32B2367/00; H; H05; H05B; H05B3/00; H05B3/02; H05B3/06; H05B3/84; H05B3/86; H05B2203/00; H05B2203/013
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
173 words
A heatable, laminated windshield construction which comprises: a transparent interlayer having a pair of principal faces with a conductive coating on at least one of said faces, said conductive coating being one which produces heat when an electrical current is applied thereto, said transparent interlayer having a notched out portion, first and second laminating transparent interlayers positioned adjacent both principal faces of said transparent interlayer, first and second transparent glass sheets positioned adjacent and bonded to said laminating interlayers; a circuit board including a non-conductive base with conductive paths thereon, said circuit board extending at least in part into said notch of said transparent interlayer; electrical circuit path means in part on said conductive coating of said transparent interlayer and in part on said conductive paths of said circuit board for electrically connecting said conductive paths of said circuit board to said conductive coating; and sealing means for filling in the free volume about said notch of said transparent interlayer when said windshield is subjected to heat and pressure in a laminating operation.
Claim 2
Dependent Claim
173 words
A heatable, laminated windshield construction which comprises: a transparent interlayer having a pair of principal faces with a conductive coating on at least one of said faces, said conductive coating being one which produces heat when an electrical current is applied thereto, said transparent interlayer having a notched out portion, first and second laminating transparent interlayers positioned adjacent both principal faces of said transparent interlayer, first and second transparent glass sheets positioned adjacent and bonded to said laminating interlayers; a circuit board including a non-conductive base with conductive paths thereon, said circuit board extending at least in part into said notch of said transparent interlayer; electrical circuit path means in part on said conductive coating of said transparent interlayer and in part on said conductive paths of said circuit board for electrically connecting said conductive paths of said circuit board to said conductive coating; and sealing means for filling in the free volume about said notch of said transparent interlayer when said windshield is subjected to heat and pressure in a laminating operation.
Claim 3
Dependent Claim
20 words
The windshield construction of claim 1 wherein: said sealing means is formed of the same material as said laminating interlayers.
Claim 4
Dependent Claim
76 words
The windshield construction of claim 2 wherein: said sealing means is a U-shaped piece of material in which each of the legs thereof in part overlays a juxtaposed portion of both a side of said circuit board and a portion of said notched out portion of said transparent interlayer, and in which the connecting portion of said U-shaped piece of material overlies the juxtaposed portion of the front of said circuit board and said transparent interlayer.
Claim 5
Dependent Claim
20 words
The windshield construction of claim 3 wherein: said electric circuit path means are formed by thin paths of copper foil.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |