US4221954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heated muff
Assignee: Individual
•
Filing: 1978-04-17
•
Granted: 1980-09-09
•
Expires: 1998-04-17
Abstract
Abstract A hand warmer, particularly for simple therapeutic treatment or pain alleviation for the hands of arthritics, the warmer having the general configuration of a muff accommodating both hands of the user, the muff having a heated core which can be gently or firmly grasped by the user, inside an outer envelope of soft cloth or fur-like material which retains the heat, the core also having a covering of soft thermal material over a safety sheath and heat-distributive padding to prevent accidental contact with wiring or hot spots in the core.
Inventors
- 👤 Florence Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:07
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/007; H; H05; H05B; H05B3/00; A61F2007/0001
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
148 words
Structure with a hand-graspable heated core, comprising: (a) an elongated envelope of thermal material with hand access openings at opposite ends of the envelope, leading to the interior thereof; (b) a cylindrical core longitudinally slidably insertable into the interior of said envelope, and dimensioned and configured to be grasped by one or both hands of the user, at the user's option simultaneously, within said interior; (c) means in said core to heat said core; (d) whereby the core may be grasped gently for moderate warming or tightly for enhanced direct transfer of heat to the hand resulting in the user feeling a greatly increased heating effect; (e) said core having a centrally elongated member fixed therein, a resistance element wound thereon, heat distributive padding of incombustible insulative material surrounding solid resistance element, and a safety sheath over said padding, said sheath being of material electrically non-conductive and moisture-proof.
Claim 2
Dependent Claim
148 words
Structure with a hand-graspable heated core, comprising: (a) an elongated envelope of thermal material with hand access openings at opposite ends of the envelope, leading to the interior thereof; (b) a cylindrical core longitudinally slidably insertable into the interior of said envelope, and dimensioned and configured to be grasped by one or both hands of the user, at the user's option simultaneously, within said interior; (c) means in said core to heat said core; (d) whereby the core may be grasped gently for moderate warming or tightly for enhanced direct transfer of heat to the hand resulting in the user feeling a greatly increased heating effect; (e) said core having a centrally elongated member fixed therein, a resistance element wound thereon, heat distributive padding of incombustible insulative material surrounding solid resistance element, and a safety sheath over said padding, said sheath being of material electrically non-conductive and moisture-proof.
Claim 3
Dependent Claim
41 words
Structure according to claim 1 wherein said cylindrical core is easily separable from said envelope and is only slightly less in length than said envelope, and said thermal material is soft flexible fabric to conform with the hands of the user.
Claim 4
Dependent Claim
40 words
Structure according to claim 1 wherein said core has a tubular, separable, launderable covering and said envelope is also launderable so that both portions likely to be soiled in use, namely said covering and said envelope, can be easily cleaned.
References Cited (Backward Citations)
GB436503A
Cited
US2727241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-09 | 1984-03-10 | 1984-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-09 | 1988-03-10 | 1988-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-09 | 1992-03-10 | 1992-09-09 | $7700.00 | Window Closed / Lapsed |