US4507877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater device, particularly for ski boots
Assignee: Nordica SpA
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Filing: 1983-01-17
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Granted: 1985-04-02
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Expires: 2003-01-17
Abstract
Abstract A heater device particularly for ski boots, which comprises, located on the inner shoe of a ski boot, an electric resistance heater positioned at the user's foot sole and connected to a storage battery accommodated inside said inner shoe. The storage battery is connected to a recharge socket located at the top portion of said shoe and is connected to the resistance heater through a switch. Also provided is a voltage limiter adapted to prevent the storage battery from being discharged to below a preset voltage level.
Inventors
- 👤 Franco Vaccari
- 👤 Renzo Balbinot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:11
CPC Classifications
A; A43; A43D; A43D999/00; A43B; A43B3/00; A43B3/34; A43B3/35
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
A heater device for ski boots comprising: an electric resistance heater located on an inner shoe of a ski boot and positioned at a user's foot; at least one storage battery accomodated in a seat defined in said inner shoe; said storage battery is electrically connected with said electric resistance heater; an electric storage battery recharging socket located at the top portion of said inner shoe; said electric storage battery recharging socket is connected to said storage battery; an electric switch provided between said storage battery and said electric resistance heater; a foil to radiate the heat toward the interior of said inner shoe and to provide thermal insulation to prevent heat loss from therein; a lower portion of said electric resistance heater arranged to contact with said foil; an insole associated with an uppers of said inner shoe and supporting said foil.
Claim 2
Dependent Claim
143 words
A heater device for ski boots comprising: an electric resistance heater located on an inner shoe of a ski boot and positioned at a user's foot; at least one storage battery accomodated in a seat defined in said inner shoe; said storage battery is electrically connected with said electric resistance heater; an electric storage battery recharging socket located at the top portion of said inner shoe; said electric storage battery recharging socket is connected to said storage battery; an electric switch provided between said storage battery and said electric resistance heater; a foil to radiate the heat toward the interior of said inner shoe and to provide thermal insulation to prevent heat loss from therein; a lower portion of said electric resistance heater arranged to contact with said foil; an insole associated with an uppers of said inner shoe and supporting said foil.
Claim 3
Dependent Claim
39 words
A heater device particularly for ski boots according to claim 1, characterized in that said electric recharging socket connected to said storage battery is located at either the front or side or rear upper portion of said inner shoe.
Claim 4
Dependent Claim
23 words
A heater device particularly for ski boots according to claim 1, characterized in that said electric switch is located beside said recharging socket.
Claim 5
Dependent Claim
171 words
A heater device for ski boots comprising an electric resistance heater located on an inner shoe of a ski boot and positioned at a user's foot; at least one storage battery accomodated in a seat defined in said inner shoe; said storage battery is electrically connected with said electric resistance heater; an electric storage battery recharging socket located at the top portion of said inner shoe; said electric storage battery recharging socket is connected to said storage battery; an electric switch provided between said storage battery and said electric resistance heater; a foil to radiate the heat toward the interior of said inner shoe and to provide thermal insulation to prevent heat loss from therein; a lower portion of said electric resistance heater arranged to contact with said foil; an insole associated with an uppers of said inner shoe and supporting said foil; a voltage limiter adapted to cut off the electric supply to said resistance heater upon reaching a threshold voltage level preset for said at least one storage battery.
Claim 6
Dependent Claim
171 words
A heater device for ski boots comprising an electric resistance heater located on an inner shoe of a ski boot and positioned at a user's foot; at least one storage battery accomodated in a seat defined in said inner shoe; said storage battery is electrically connected with said electric resistance heater; an electric storage battery recharging socket located at the top portion of said inner shoe; said electric storage battery recharging socket is connected to said storage battery; an electric switch provided between said storage battery and said electric resistance heater; a foil to radiate the heat toward the interior of said inner shoe and to provide thermal insulation to prevent heat loss from therein; a lower portion of said electric resistance heater arranged to contact with said foil; an insole associated with an uppers of said inner shoe and supporting said foil; a voltage limiter adapted to cut off the electric supply to said resistance heater upon reaching a threshold voltage level preset for said at least one storage battery.
Claim 7
Dependent Claim
32 words
A heater device particularly for ski boots according to claim 4, characterized in that said voltage limiter is arranged in the electric path between said electric resistance heater and said storage battery.
Claim 8
Dependent Claim
33 words
A heater device particularly for ski boots according to claim 4, characterized in that said voltage limiter has input terminals connected to terminals of said storage battery to monitor the voltage level thereof.
References Cited (Backward Citations)
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Cited
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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) | 1988-04-01 | 1988-10-01 | 1989-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-01 | 1992-10-01 | 1993-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-01 | 1996-10-01 | 1997-04-02 | $7700.00 | Window Closed / Lapsed |