Patent US9221028B2 successfully refreshed from Google Patents.
US4455764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mountable warming cap for a shoe or boot
Assignee: Individual
•
Filing: 1982-06-08
•
Granted: 1984-06-26
•
Expires: 2002-06-08
Abstract
Abstract A warming cap mountable on the toe of a boot. A flexible, heat conductive inner core can be shaped to conform the cap to the shape of the boot and an upper receptacle holds a heat source for generating heat.
Inventors
- 👤 Harold E. Rock
- 👤 Stephen E. Palen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:20
CPC Classifications
A; A43; A43B; A43B7/00; A43B7/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
139 words
A warming cap mountable on the toe of a shoe or boot, said cap comprising a main body portion having an inner core of flexible, heat conductive material capable of being conformed to the shape of the toe of the boot on which it is mounted, a receptacle mounted on a upper surface of the main body portion for retaining a heat source, the receptacle comprising an elongated body portion having respective side walls and end walls extending upwardly from the main body portion of the device, and including a cover hinged on the receptacle to retain a heat source therein and to permit access to the interior thereof to replace such heat source as needed, and the heat source provided for heating the inner core of the device and thereby warming the boot and the foot contained therein.
Claim 2
Dependent Claim
139 words
A warming cap mountable on the toe of a shoe or boot, said cap comprising a main body portion having an inner core of flexible, heat conductive material capable of being conformed to the shape of the toe of the boot on which it is mounted, a receptacle mounted on a upper surface of the main body portion for retaining a heat source, the receptacle comprising an elongated body portion having respective side walls and end walls extending upwardly from the main body portion of the device, and including a cover hinged on the receptacle to retain a heat source therein and to permit access to the interior thereof to replace such heat source as needed, and the heat source provided for heating the inner core of the device and thereby warming the boot and the foot contained therein.
Claim 3
Dependent Claim
38 words
A warming device as claimed in claim 1 wherein an outer surface of the main body portion is covered with an insulating material to keep the heat generated by the heat source from dissipating to the outside air.
Claim 4
Dependent Claim
32 words
A warming device as claimed in claim 2 wherein an inner surface of the main body portion is covered with insulation to slow the radiation rate of heat to the boot below.
Claim 5
Dependent Claim
23 words
A warming device as claimed in claim 1 or 2 wherein the inner core is comprised of copper sheeting, an excellent heat-conductive material.
Claim 6
Dependent Claim
42 words
A warming device as claimed in claim 1 or 2 wherein a plurality of openings are provided in the inner core to control the flow of heat therefrom and a plurality of openings are provided in the receptacale to provide ventilation therethrough.
Claim 7
Dependent Claim
20 words
A warming device as claimed in claim 1 or 2 including a strap to secure the device to the boot.
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) | 1987-06-26 | 1987-12-26 | 1988-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-26 | 1991-12-26 | 1992-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-26 | 1995-12-26 | 1996-06-26 | $7700.00 | Window Closed / Lapsed |