US3138698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container and electrical heater means
Assignee: Individual
•
Filing: 1963-09-17
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Granted: 1964-06-23
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Expires: 1983-09-17
Abstract
No abstract record available.
Inventors
- 👤 Alton R Wells
- 👤 Robert M Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:54
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
IN COMBINATION IN A PORTABLE ELECTRIC APPLIANCE, A PLASTIC CONTAINER HAVING A BOTTOM WITH AN APERTURE THEREIN, AN ELECTRICAL HEATER MEANS, A METAL PLATE OF GREATER SIZE THAN SAID APERTURE, INTERCONNECTED VERTICALLY EXTENDING TONGUE AND GROOVE MEANS FORMED ON A PERIPHERAL PORTION OF SAID METAL PLATE AND ON SAID CONTAINER BOTTOM ADJACENT SAID APERTURE FOR PROVIDING A SEALED CONNECTION THEREBETWEEN TO FORM A LIQUID RECEIVING CHAMBER, SAID TONGUE AND GROOVE MEANS COMPRISING TONGUE MEANS ON ONE OF SAID CONTAINER AND SAID METAL PLATE AND GROOVE MEANS ON THE OTHER OF SAID CONTAINER AND SAID METAL PLATE, SAID HEATER MEANS BEING OPERATIVELY ASSOCIATED WITH A CENTRAL PORTION OF SAID METAL PLATE IN SEALED RELATION THEREWITH, SAID TONGUE AND GROOVE MEANS BEING RADIALLY SPACED FROM SAID HEATER MEANS BY A CONTINUOUS PORTION OF SAID METAL PLATE, SAID HEATER MEANS BEING POSITIONED WITHIN BUT SPACIALLY AND THERMALLY INSULATED FROM SAID PLASTIC CONTAINER BY SAID CONTINUOUS PORTION OF SAID METAL PLATE, SAID CONTINUOUS PORTION BEING OF AN AREA CORRELATED WITH THE WATTAGE OF SAID HEATER MEANS, THE SIZE OF SAID METAL PLATE AND THE MATERIAL FROM WHICH IT IS MADE,
Claim 2
Dependent Claim
186 words
IN COMBINATION IN A PORTABLE ELECTRIC APPLIANCE, A PLASTIC CONTAINER HAVING A BOTTOM WITH AN APERTURE THEREIN, AN ELECTRICAL HEATER MEANS, A METAL PLATE OF GREATER SIZE THAN SAID APERTURE, INTERCONNECTED VERTICALLY EXTENDING TONGUE AND GROOVE MEANS FORMED ON A PERIPHERAL PORTION OF SAID METAL PLATE AND ON SAID CONTAINER BOTTOM ADJACENT SAID APERTURE FOR PROVIDING A SEALED CONNECTION THEREBETWEEN TO FORM A LIQUID RECEIVING CHAMBER, SAID TONGUE AND GROOVE MEANS COMPRISING TONGUE MEANS ON ONE OF SAID CONTAINER AND SAID METAL PLATE AND GROOVE MEANS ON THE OTHER OF SAID CONTAINER AND SAID METAL PLATE, SAID HEATER MEANS BEING OPERATIVELY ASSOCIATED WITH A CENTRAL PORTION OF SAID METAL PLATE IN SEALED RELATION THEREWITH, SAID TONGUE AND GROOVE MEANS BEING RADIALLY SPACED FROM SAID HEATER MEANS BY A CONTINUOUS PORTION OF SAID METAL PLATE, SAID HEATER MEANS BEING POSITIONED WITHIN BUT SPACIALLY AND THERMALLY INSULATED FROM SAID PLASTIC CONTAINER BY SAID CONTINUOUS PORTION OF SAID METAL PLATE, SAID CONTINUOUS PORTION BEING OF AN AREA CORRELATED WITH THE WATTAGE OF SAID HEATER MEANS, THE SIZE OF SAID METAL PLATE AND THE MATERIAL FROM WHICH IT IS MADE,
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |