Patent US3210526A successfully refreshed from Google Patents.
US3210526A
Expired / Lapsed
US
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Electric immersion heater
Assignee: Electro Therm Inc
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Filing: 1964-03-23
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Granted: 1965-10-05
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Expires: 1984-03-23
Abstract
No abstract record available.
Inventors
- 👤 Nicholas J Burger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:42
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/02; H05B3/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
AN ELECTRIC IMMERSION HEATER COMPRISING AN ELONGATED ELECTRIC HEATING ELEMENT INCLUDING A TUBULAR SHEATH OF NON-FERROUS METAL, A PLATE-LIKE FLANGE HAVING AN OPENING THERETHROUGH, SAID HEATING ELEMENT HAVING ONE END MOUNTED IN SAID OPENING, SAID HEATING ELEMENT EXTENDING IN CANTILEVER FASHION FROM ONE SIDE OF SAID FLANGE, AND A NON-FERROUS SHEET METAL COVER ELEMENT POSITIONED IN COVERING RELATION TO AT LEAST A SUBSTANTIAL PORTION OF SAID ONE SIDE OF SAI FLANGE, SAID COVER ELEMENT HAVING A PORTION POSITIONED BETWEEN THE FLANGE AND THE SHEATH, THE METAL OF THE FLANGE BEING DEFORMED INWARDLY AGAINST THE SHEATH AND SAID PORTION OF THE COVER ELEMENT CONTINUOUSLY AROUND THE SHEATH TO FORM A LIQUID TIGHT AND MECHANICALLY RIGID JOINT THEREBETWEEN.
Claim 2
Dependent Claim
116 words
AN ELECTRIC IMMERSION HEATER COMPRISING AN ELONGATED ELECTRIC HEATING ELEMENT INCLUDING A TUBULAR SHEATH OF NON-FERROUS METAL, A PLATE-LIKE FLANGE HAVING AN OPENING THERETHROUGH, SAID HEATING ELEMENT HAVING ONE END MOUNTED IN SAID OPENING, SAID HEATING ELEMENT EXTENDING IN CANTILEVER FASHION FROM ONE SIDE OF SAID FLANGE, AND A NON-FERROUS SHEET METAL COVER ELEMENT POSITIONED IN COVERING RELATION TO AT LEAST A SUBSTANTIAL PORTION OF SAID ONE SIDE OF SAI FLANGE, SAID COVER ELEMENT HAVING A PORTION POSITIONED BETWEEN THE FLANGE AND THE SHEATH, THE METAL OF THE FLANGE BEING DEFORMED INWARDLY AGAINST THE SHEATH AND SAID PORTION OF THE COVER ELEMENT CONTINUOUSLY AROUND THE SHEATH TO FORM A LIQUID TIGHT AND MECHANICALLY RIGID JOINT THEREBETWEEN.
References Cited (Backward Citations)
US2423184A
Cited
US2810815A
Cited
US3111572A
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US3116401A
Cited
US3116402A
Cited
US3134889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |