US3310657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric immersion heater assembly
Assignee: —
•
Filing: —
•
Granted: 1967-03-21
•
Expires: 1984-03-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:39
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/78; H05B3/80; H05B3/40; H05B3/42; H05B3/44; H05B3/48; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6606
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A HEATER ASSEMBLY, COMPRISING AN ELONGATED METAL TUBE ADAPTED TO BE INSERTED INTO A CONTAINER TO HEAT THE CONTENTS THEREOF, AN ELONGATED METAL SLUG WITHIN SAID TUBE, SAID SLUG HAVING SIDE-BY-SIDE LONGITUDINALLY EXTENDINGY RECESSES, AN ELECTRIC HEATING ELEMENT WITHIN ONE OF SAID RECESSES AND A TEMPERATURE RESPONSIVE DEVICE WITHIN THE OTHER RECESS, SAID ELEMENT AND DEVICE HAVING TERMINALS FOR THE PURPOSE OF PLACING THEM IN ELECTRIC CIRCUIT WITH A SOURCE OF ELECTRICAL ENERGY, SAID SLUG BEING COEXTENSIVE WITH AT LEAST THE ACTIVE HEATING PORTION OF THE HEATING ELEMENT AND THE ACTIVE THERMAL RESPONSIVE PORTION OF SAID TEMPERATURE RESPONSIVE DEVICE, SAID SLUG HAVING AN OUTER SURFACE IN CLOSELY FITTING ENGAGEMENT WITH THE INNER SURFACE OF SAID TUBE, AND MEANS ON AT LEAST ONE OF THE INNER SURFACE OF THE TUBE AND THE OUTER SURFACE OF SAID SLUG FOR
Claim 2
Dependent Claim
137 words
A HEATER ASSEMBLY, COMPRISING AN ELONGATED METAL TUBE ADAPTED TO BE INSERTED INTO A CONTAINER TO HEAT THE CONTENTS THEREOF, AN ELONGATED METAL SLUG WITHIN SAID TUBE, SAID SLUG HAVING SIDE-BY-SIDE LONGITUDINALLY EXTENDINGY RECESSES, AN ELECTRIC HEATING ELEMENT WITHIN ONE OF SAID RECESSES AND A TEMPERATURE RESPONSIVE DEVICE WITHIN THE OTHER RECESS, SAID ELEMENT AND DEVICE HAVING TERMINALS FOR THE PURPOSE OF PLACING THEM IN ELECTRIC CIRCUIT WITH A SOURCE OF ELECTRICAL ENERGY, SAID SLUG BEING COEXTENSIVE WITH AT LEAST THE ACTIVE HEATING PORTION OF THE HEATING ELEMENT AND THE ACTIVE THERMAL RESPONSIVE PORTION OF SAID TEMPERATURE RESPONSIVE DEVICE, SAID SLUG HAVING AN OUTER SURFACE IN CLOSELY FITTING ENGAGEMENT WITH THE INNER SURFACE OF SAID TUBE, AND MEANS ON AT LEAST ONE OF THE INNER SURFACE OF THE TUBE AND THE OUTER SURFACE OF SAID SLUG FOR
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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) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |