US4697359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Footwear structure incorporating a heating device particularly for ski boots
Assignee: Nordica SpA
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Filing: 1986-05-09
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Granted: 1987-10-06
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Expires: 2006-05-09
Abstract
Abstract The footwear structure comprises a shell, including a sole portion and having a quarter connected thereto. The sole portion incorporates an electrical resistance heating circuit, electrically connected to terminals and at least one rechargeable storage battery. The structure further comprises a housing, positioned at a rear portion of the quarter, protruding rearwardly, and being adapted for removably receiving the rechargeable storage battery, and a switch for selectively electrically connecting the battery to the electrical resistance heating circuit.
Inventors
- 👤 Renzo Balbinot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:57
CPC Classifications
A; A43; A43B; A43B3/00; A43B3/34; A43B3/35
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
192 words
A footwear structure including a composite heating device particularly for ski boots, the footwear structure comprising a shell, leg portions and sole defining portions, an open seat formation in one of said leg portions, said seat formation having an opening at a perimeter surface thereof and mating internal surface portions, the composite heating device comprising electrically powered heating means at least in part arranged in said sole defining portions and electrical energy source means received in said seat formation and circuit means electrically connecting said electrical energy source means and said electrically powered heating means, wherein said composite heating device further comprises a self contained removable receptacle member enclosing therein said elctrical energy source means and having outwardy exposed electrical terminal means and mating perimetral surface portions for removable mating engagement with said mating internal surface portions provided in said seat formation and closing said opening thereof, said seat formation having mating electric terminal means contained therein and removably connectable with said outwardly exposed electric terminal means, said mating terminal means being a component part of said circuit means electrically connecting said electrical energy source means and said electrically powered heating means.
Claim 2
Dependent Claim
192 words
A footwear structure including a composite heating device particularly for ski boots, the footwear structure comprising a shell, leg portions and sole defining portions, an open seat formation in one of said leg portions, said seat formation having an opening at a perimeter surface thereof and mating internal surface portions, the composite heating device comprising electrically powered heating means at least in part arranged in said sole defining portions and electrical energy source means received in said seat formation and circuit means electrically connecting said electrical energy source means and said electrically powered heating means, wherein said composite heating device further comprises a self contained removable receptacle member enclosing therein said elctrical energy source means and having outwardy exposed electrical terminal means and mating perimetral surface portions for removable mating engagement with said mating internal surface portions provided in said seat formation and closing said opening thereof, said seat formation having mating electric terminal means contained therein and removably connectable with said outwardly exposed electric terminal means, said mating terminal means being a component part of said circuit means electrically connecting said electrical energy source means and said electrically powered heating means.
Claim 3
Dependent Claim
63 words
A footwear structure according to claim 1, wherein said leg portions comprises a rear quarter and wherein said seat formation is in the form of a housing formation integral with said rear quarter and is formed on the rear surface thereof substantially like a hollow prallelepiped body portion having a lateral outside opening for the insertion therein of said self contained receptacle member.
Claim 4
Dependent Claim
64 words
A footwear structure according to claim 1, wherein said leg portions further comprise a front quarter connected to said shell and wherein said seat formation is integral with said front quarter and is formed on the front surface thereof substantially like a hollow parllelpiped body portion having an outside opening at the top thereof for the insertion therein of said self contained receptacle member.
Claim 5
Dependent Claim
46 words
A footwear structure according to claim 1, wherein said seat formation is in the form of a recess provided on the inner surface of said rear quarter, an open side of said recess facing inwardly for inserting therein from the inside said self contained receptacle member.
Claim 6
Dependent Claim
28 words
A footwear structure according to claim 1, wherein said circuit means include a switch having an actuation member thereof projection from an outside surface of said reseptacle member.
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) | 1990-10-05 | 1991-04-06 | 1991-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-05 | 1995-04-06 | 1995-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-05 | 1999-04-06 | 1999-10-06 | $7700.00 | Window Closed / Lapsed |