Patent US752481A successfully refreshed from Google Patents.
US4135078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically heated window
Assignee: Saint Gobain Industries SA
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Filing: 1976-06-25
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Granted: 1979-01-16
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Expires: 1996-06-25
Abstract
Abstract An electrically heated window for a vehicle includes a transparent sheet, a plurality of electrical resistance strips disposed on the sheet, and at least two closely spaced electrodes disposed on a surface of the sheet for detection of humidity on the surface of the sheet between them. The electrodes extend along the maximum slope of the window, and may extend downwardly unequal distances.
Inventors
- 👤 Siegfried Kuiff
- 👤 Heinz Ueberwolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:41
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/84; G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/048; H05B1/00; H05B1/02; H05B1/0227; H05B1/023; H05B1/0236; H05B3/20; H05B2203/00; H05B2203/002; H05B2203/006; H05B2203/035
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
129 words
A thermal window comprising a smooth surfaced transparent sheet which is inclined from the horizontal when installed for use, a plurality of spaced electric resistance heating conductors on the sheet extending generally horizontally, terminal means for connecting said heating conductors in circuit with a source of electrical power, and a humidity detector including at least two conductors closely spaced from each other affixed to and standing in relief from the inside surface of the sheet, said conductors of the humidity detector extending substantially perpendicular to said heating conductors so as to extend in a direction of maximum slope of said sheet when installed for use with one of the conductors extending below the lower terminus of the other of the conductors and closely approaching one of said heating conductors.
Claim 2
Dependent Claim
129 words
A thermal window comprising a smooth surfaced transparent sheet which is inclined from the horizontal when installed for use, a plurality of spaced electric resistance heating conductors on the sheet extending generally horizontally, terminal means for connecting said heating conductors in circuit with a source of electrical power, and a humidity detector including at least two conductors closely spaced from each other affixed to and standing in relief from the inside surface of the sheet, said conductors of the humidity detector extending substantially perpendicular to said heating conductors so as to extend in a direction of maximum slope of said sheet when installed for use with one of the conductors extending below the lower terminus of the other of the conductors and closely approaching one of said heating conductors.
Claim 3
Dependent Claim
22 words
A thermal window according to claim 1 in which the lower extremity of said one conductor of the humidity detector is pointed.
Claim 4
Dependent Claim
27 words
A thermal window according to claim 1 in which said conductors of the humidity detector are positioned above and closely adjacent the uppermost of said heating conductors.
Claim 5
Dependent Claim
54 words
A thermal window according to claim 1 including strip means on the inside surface of said sheet above said conductors of said humidity detector and extending thereover, said strip standing in relief from the inside surface to a height sufficient to divert water droplets from the area between said conductors of the humidity detector.
References Cited (Backward Citations)
US2407215A
Cited
US3555289A
Cited
US3649898A
Cited
US3832527A
Cited
US3794847A
Cited
US3934111A
Cited
US3983527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-15 | 1982-07-17 | 1983-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-15 | 1986-07-17 | 1987-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-15 | 1990-07-17 | 1991-01-16 | $7700.00 | Window Closed / Lapsed |