US3086187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical heating element
Assignee: American Radiator and Standard Sanitary Corp
•
Filing: 1960-05-20
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Granted: 1963-04-16
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Expires: 1980-05-20
Abstract
No abstract record available.
Inventors
- 👤 Duggan Robert Beaman
- 👤 Klapheke August Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:33
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/54; H05B3/56; F; F24; F24D; F24D19/00; F24D19/02; F24D19/04; F24H; F24H3/00; F24H3/002; H05B3/10; H05B3/12; H05B3/14; H05B3/565
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN AN AIR HEATING DEVICE, A STRIP OF ELECTRIC RESISTANCE SHEET MATERIAL, A PAIR OF U-SHAPED ELECTRIC CONDUCTORS STRADDLING THE LONGITUDINAL EDGES OF THE SHEET MATERIAL AND EXTENDING LENGTHWISE OF SAID MATERIAL AND IN ELECTRIC CONDUCTING CONTACT THEREWITH THROUGHOUT THE LENGTH OF SAID MATERIAL, SAID MATERIAL BEING SO CONSTITUTED THAT IT MAY BE READILY AND EASILY SEVERED TRANSVERSE TO THE LENGTH OF SAID CONDUCTORS AND IN ACCORDANCE WITH DESIRED HEAT OUTPUT, SAID MATERIAL AND CONDUCTORS BEING FOLDED TRANSVERSE TO THE LENGTH THEREOF TO FORM OPPOSED LOOPS, SAID
Claim 2
Dependent Claim
87 words
IN AN AIR HEATING DEVICE, A STRIP OF ELECTRIC RESISTANCE SHEET MATERIAL, A PAIR OF U-SHAPED ELECTRIC CONDUCTORS STRADDLING THE LONGITUDINAL EDGES OF THE SHEET MATERIAL AND EXTENDING LENGTHWISE OF SAID MATERIAL AND IN ELECTRIC CONDUCTING CONTACT THEREWITH THROUGHOUT THE LENGTH OF SAID MATERIAL, SAID MATERIAL BEING SO CONSTITUTED THAT IT MAY BE READILY AND EASILY SEVERED TRANSVERSE TO THE LENGTH OF SAID CONDUCTORS AND IN ACCORDANCE WITH DESIRED HEAT OUTPUT, SAID MATERIAL AND CONDUCTORS BEING FOLDED TRANSVERSE TO THE LENGTH THEREOF TO FORM OPPOSED LOOPS, SAID
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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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |