US3360633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable electrical foot heating apparatus
Assignee: Individual
•
Filing: 1965-04-20
•
Granted: 1967-12-26
•
Expires: 1985-04-20
Abstract
No abstract record available.
Inventors
- 👤 Weisberger David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:34
CPC Classifications
A; A43; A43B; A43B3/00; A43B3/34; A43B3/35; A61; A61F; A61F7/00; A61F7/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
APPARATUS FOR PROVIDING A CONTROLLED QUANTITY OF AVAILABLE THERMAL ENERGY FOR APPLICATION TO THE PEDIS PORTIONS OF THE WEARER, COMPRISING, IN COMBINATION: A SOLE PORTION AND A HEEL PORTION; SAID SOLE AND HEEL PORTIONS BEING FABRICATED OF AN ELECTRICALLY NON-CONDUCTIVE MATERIAL COMPRISING: A SURFACE HAVING A RECESS THEREIN; A HEATING FILM OF ELECTRICALLY RESISTIVE MATERIAL POSITIONED WITHIN SAID RECESS FOR PRESENTING A CONTROLLED QUANTITY OF AVAILABLE THERMAL ENERGY THAT CAN UNIFORMLY AND COMFORTABLY BE APPLIED TO THE PEDIS PORTIONS OF A WEARER; SAID HEEL PORTION COMPRISING: AN ENERGY CHAMBER; A SOURCE OF ELECTRICAL ENERGY POSITIONED WITHIN SAID ENERGY CHAMBER; AND ELECTRICAL CONDUCTORS CONNECTING THE HEATING FILM TO THE SOURCE OF ENERGY.
Claim 2
Dependent Claim
111 words
APPARATUS FOR PROVIDING A CONTROLLED QUANTITY OF AVAILABLE THERMAL ENERGY FOR APPLICATION TO THE PEDIS PORTIONS OF THE WEARER, COMPRISING, IN COMBINATION: A SOLE PORTION AND A HEEL PORTION; SAID SOLE AND HEEL PORTIONS BEING FABRICATED OF AN ELECTRICALLY NON-CONDUCTIVE MATERIAL COMPRISING: A SURFACE HAVING A RECESS THEREIN; A HEATING FILM OF ELECTRICALLY RESISTIVE MATERIAL POSITIONED WITHIN SAID RECESS FOR PRESENTING A CONTROLLED QUANTITY OF AVAILABLE THERMAL ENERGY THAT CAN UNIFORMLY AND COMFORTABLY BE APPLIED TO THE PEDIS PORTIONS OF A WEARER; SAID HEEL PORTION COMPRISING: AN ENERGY CHAMBER; A SOURCE OF ELECTRICAL ENERGY POSITIONED WITHIN SAID ENERGY CHAMBER; AND ELECTRICAL CONDUCTORS CONNECTING THE HEATING FILM TO THE SOURCE OF ENERGY.
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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) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |