US3116401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric heaters
Assignee: Edwin L Wiegand Co
•
Filing: 1960-06-22
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Granted: 1963-12-31
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Expires: 1980-06-22
Abstract
No abstract record available.
Inventors
- 👤 Lester D Drugmand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:15
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/42; H05B3/48; H05B3/02; H05B3/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49934; Y10T403/00; Y10T403/47; Y10T403/472; Y10T403/70; Y10T403/7047; Y10T403/7061
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
AN ELECTRIC HEATER ASSEMBLY, COMPRISING A METALLIC MOUNTING MEMBER HAVING A PAIR OF OPENINGS THEREIN, A DIELECTRIC SLEEVE CLOSELY FITTING WITHIN EACH OF SAID OPENINGS, AN ELECTRIC HEATING ELEMENT HAVING A METALLIC SHEATH, PORTIONS OF THE LATTER CLOSELY FITTING WITHIN AND EXTENDING INTO RESPECTIVE ONES OF SAID SLEEVES AND BEING FIRMLY CONNECTED TO SAID MOUNTING MEMBER, MEANS FOR REGULATING FLOW OF ELECTRIC CURRENT BETWEEN SAID SHEATH AND SAID MOUNTING MEMBER AND HAVING A PAIR OF ELECTRICAL CONNECTION LEADS, ONE OF SAID LEADS BEING DISPOSED BETWEEN AND IN CONTACT WITH THE DEFINING WALL OF ONE OF SAID OPENINGS AND THE ADJOINING OUTER SURFACE OF THE CORRESPONDING SLEEVE TO PLACE SAID ONE LEAD IN ELECTRICAL CONTACT WITH SAID DEFINING WALL AND THUS IN ELECTRICAL CONTACT WITH SAID MOUNTING MEMBER, AND THE OTHER OF SAID LEADS BEING DISPOSED BETWEEN AND IN CONTACT WITH THE EXTERIOR SURFACE OF THE SHEATH PORTION AND THE INTERIOR SURFACE OF THE SLEEVE AT THE OTHER OF SAID OPENINGS TO PLACE SAID OTHER LEAD IN ELECTRICAL CONTACT WITH SAID SHEATH.
Claim 2
Dependent Claim
171 words
AN ELECTRIC HEATER ASSEMBLY, COMPRISING A METALLIC MOUNTING MEMBER HAVING A PAIR OF OPENINGS THEREIN, A DIELECTRIC SLEEVE CLOSELY FITTING WITHIN EACH OF SAID OPENINGS, AN ELECTRIC HEATING ELEMENT HAVING A METALLIC SHEATH, PORTIONS OF THE LATTER CLOSELY FITTING WITHIN AND EXTENDING INTO RESPECTIVE ONES OF SAID SLEEVES AND BEING FIRMLY CONNECTED TO SAID MOUNTING MEMBER, MEANS FOR REGULATING FLOW OF ELECTRIC CURRENT BETWEEN SAID SHEATH AND SAID MOUNTING MEMBER AND HAVING A PAIR OF ELECTRICAL CONNECTION LEADS, ONE OF SAID LEADS BEING DISPOSED BETWEEN AND IN CONTACT WITH THE DEFINING WALL OF ONE OF SAID OPENINGS AND THE ADJOINING OUTER SURFACE OF THE CORRESPONDING SLEEVE TO PLACE SAID ONE LEAD IN ELECTRICAL CONTACT WITH SAID DEFINING WALL AND THUS IN ELECTRICAL CONTACT WITH SAID MOUNTING MEMBER, AND THE OTHER OF SAID LEADS BEING DISPOSED BETWEEN AND IN CONTACT WITH THE EXTERIOR SURFACE OF THE SHEATH PORTION AND THE INTERIOR SURFACE OF THE SLEEVE AT THE OTHER OF SAID OPENINGS TO PLACE SAID OTHER LEAD IN ELECTRICAL CONTACT WITH SAID SHEATH.
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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) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |