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WO2014030014A1 - Boot heater - Google Patents

Boot heater Download PDF

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Publication number
WO2014030014A1
WO2014030014A1 PCT/GB2013/052233 GB2013052233W WO2014030014A1 WO 2014030014 A1 WO2014030014 A1 WO 2014030014A1 GB 2013052233 W GB2013052233 W GB 2013052233W WO 2014030014 A1 WO2014030014 A1 WO 2014030014A1
Authority
WO
WIPO (PCT)
Prior art keywords
boot
heating element
heater
tongue
liner
Prior art date
Application number
PCT/GB2013/052233
Other languages
French (fr)
Inventor
Dion Steward
Original Assignee
Dion Steward
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dion Steward filed Critical Dion Steward
Publication of WO2014030014A1 publication Critical patent/WO2014030014A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/007—Heating or cooling appliances for medical or therapeutic treatment of the human body characterised by electric heating
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/26—Tongues for shoes
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B3/00—Footwear characterised by the shape or the use
    • A43B3/34—Footwear characterised by the shape or the use with electrical or electronic arrangements
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B3/00—Footwear characterised by the shape or the use
    • A43B3/34—Footwear characterised by the shape or the use with electrical or electronic arrangements
    • A43B3/35—Footwear characterised by the shape or the use with electrical or electronic arrangements with electric heating arrangements
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B3/00—Footwear characterised by the shape or the use
    • A43B3/34—Footwear characterised by the shape or the use with electrical or electronic arrangements
    • A43B3/35—Footwear characterised by the shape or the use with electrical or electronic arrangements with electric heating arrangements
    • A43B3/355—Footwear characterised by the shape or the use with electrical or electronic arrangements with electric heating arrangements heated by an electric current from an external source, e.g. car batteries

Definitions

  • the present invention relates to a heater for a boot and/or a boot insert.
  • boot insert means both:
  • ⁇ a tongue insert extending behind a boot tongue, where it is inserted, to extend to the top of the boot and/or its tongue or possibly above the boot and tongue as in a shin protector.
  • heating elements are not ideally positioned.
  • the object of the present invention is to provide an improved boot heater.
  • a boot heater comprising a boot or boot insert having a heating element in a tongue region of the boot or boot insert.
  • the tongue of a conventional boot is a strip of material extending from close to the toes up the front of the boot to its top, so arranged to cover internally the gap between two laced together sides of the boot.
  • tongues of boots have gussets connecting the tongue to sides of the boots.
  • the "tongue region” is the region of the boot in which the tongue extends.
  • the tongue region of a boot liner is the region of the liner underlying the tongue region of the lined boot.
  • a heating element in the tongue region will have the advantage of heating blood flowing in the user's foot in that arteries leading blood to the foot run down the frontal region of the lower leg, ankle and foot and spread out from the frontal region to the individual parts of the foot, namely the toes for instance.
  • the heating element can be provided in the tongue of the boot per se or the tongue region of a boot liner or indeed in the tongue area of a sock or a tongue insert to be worn in a boot.
  • the heating element can be in a tongue of the boot liner or another tongue region where the liner does not have a discrete tongue, for instance where the two sides of the liner can be wrapped one across the other in front of the user's leg or foot. Insofar as such an arrangement actually has two wrapped pieces underlying the tongue of the boot in use, it has two tongue regions.
  • the heating element can be provided in either. In a sock, the heating element is likely to be in a specific tongue region.
  • the heating element can be an ohmic element, of either laminar resistive material or woven resistive material.
  • an element comprised of elastomeric polymer material embedded with carbon particles, manufactured as a flexible sheet, extending underneath and between edge conductors is employed.
  • the element can be provided in combination with a thermostatic device to enable switching current to the element on when area in which the device is installed is below a certain temperature.
  • the heating element may itself be a substantially self-regulating heating element, the element having positive temperature coefficient characteristics, its resistance rising with temperature and typically obviating the need for a separate thermostat.
  • the boot or boot insert will be provided with a connector for powering from an external battery or other source of electricity.
  • the connector has a thermostatic device contact for providing temperature data to an external switching circuit.
  • the heating element can be employed. It is also envisaged that the tongue region heating element can be augmented by at least one heating element positioned elsewhere in the boot or boot insert.
  • Figure 1 is a perspective view of a boot liner in accordance with the invention
  • Figure 2 is a scrap cross-sectional view on the line II- II through a tongue of the liner
  • Figure 3 a scrap cross-sectional view at a larger scale on the line III- III through the tongue at a temperature detecting thermistor
  • FIG 4 is a circuit diagram of the heating element, thermistor and jack of the tongue of the boot liner of Figure 1.
  • a ski boot liner 1 has a tongue 2 (without gussets) in which an ohmic heating element 4 is provided.
  • This is comprised of a layer 41 of polymeric material with embedded granular carbon content enclosed in a waterproof and vapour proof envelope 42 formed by applying an impermeable waterproof coating.
  • Suitable coating materials are polyurethane, silicone or acrylic elastomers or more preferably a laminate such as a foil laminate, however other materials may be used.
  • Conductors 45,46 are provided along edges of the layer of polymeric material with embedded carbon content in contact with the layer. Contacts to the conductors are provided at respective opposite corners and at one end. Suitable laminar heating elements of this form are available from Inditherm pic - w ,indi therm.com .
  • the liner is fabricated throughout of an outer wearing layer 5, a central insulation layer 6 and an inner layer 7 textured for a comfortable feel and in particular moisture wicking.
  • the heating element is arranged between inner layer and the insulation layer, along the length of the tongue only. It is envisaged that the heating element will assist body heat in wicking moisture away. Since stitching through the element is liable to damage it, the element will not normally extend beyond the tongue proper towards the toes.
  • a jack connector 11 is provided at the top of the tongue, with one wire 12 connected from one jack contact 121 to one upper end contact 14 of the heating element conductor 45 and another wire 15 connected from another jack contact 151 to the upper end contact 16 of the other element conductor 46.
  • a thermistor 17 is included in the heating element on the side of the polymeric material with embedded carbon content, which is innermost in use, for measuring the temperature at heating element's surface.
  • One wire 19 of the thermistor is connected to the wire 15 connected to the edge conductor 46 of the element, connecting one side of the element and one side of the thermistor in common to the jack contact 151 and the other thermistor wire 20 is connected to a third jack contact 201.
  • a non-shown battery pack and control circuit provides power via a cable plugged into the jack connector.
  • the battery pack and control circuit can be worn around the user's waist and the control circuit can use pulse width modulation to heat the tongue, bringing the temperature at the liner to one which is comfortable for the user.
  • An alternative battery pack position is on the outsides of the boots or on top of the lacing/clamping region. Again the batteries can be accommodated in a cuff around the top of the boot.
  • An optional further heating element 21 is arranged in the heel and ankle of the boot liner. Its size and shape can be varied. It is provided with its own jack 22 at the top and back of the liner and its own thermistor 23. It can be controlled from a second circuit in the battery pack and control circuit or it could be provided with its own battery pack and control circuit.
  • mains power supplies and control circuits can be provided for heating the liner to a temperature - detected by the thermistors - for drying of the liner and heating the liner to a softening temperature for moulding the liner to the shape of the users foot, ankle and lower leg inside a ski boot.
  • the thermistor wire 19 could be continued to the jack 11, with this being with a fourth contact for it.
  • the heating element could be self-regulating whose resistance rises with temperature, obviating the need for a separate thermostat.
  • a PTC positive temperature coefficient of resistance
  • thermistor each of low resistance (say 1/3 ohm) below a predetermined temperature) in series with the heating element. More than one such thermistor can be used in parallel with each other and each having a progressively higher critical temperature, whereby current is progressively reduced with temperature to obviate overheating.
  • the heating element can be incorporated in a sock, which is removable from the boot in the normal way. Again, it is envisaged that the heating element will assist body heat in wicking moisture away. It is further envisaged that the heating element will augment wicking and evaporation of moisture away from the body achieved by conventional moisture control features such as capillaries and/or air channels already provided in socks and/or boots.
  • a tongue insert in accordance with my invention.
  • the insert being narrow as inserted in a boot behind a boot tongue and possibly wider in the region of the wearer's shin where the tongue insert could extend above the boot. It can be provided with a strap to pass behind the user's leg or under and/or behind the ankle, to obviate the tongue insert migrating up the user's leg and out of the boot.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

A ski boot liner (1) has a tongue (2) in which an ohmic heating element (4) is provided. A jack connector (11) is provided at the top of the tongue, with one wire (12) connected from one jack contact (121) to one upper end contact (14) of the heating element conductor (45) and another wire (15) connected from another jack contact (151) to the upper end contact (16) of the other element conductor (46). A thermistor (17) is included in the heating element. One wire (19) of the thermistor is connected to the wire (15) connected to the edge conductor (46) of the element, connecting one side of the element and one side of the thermistor in common to the jack contact (151) and the other thermistor wire (20) is connected to a third jack contact (201). In use a non-shown battery pack and control circuit provides power via a cable plugged into the jack connector. The battery pack and control circuit can be worn around the user's waist and the control circuit can use pulse width modulation to heat the tongue, bringing the temperature at the liner to one which is comfortable for the user.

Description

BOOT HEATER
The present invention relates to a heater for a boot and/or a boot insert. As used herein, the term "boot insert" means both:
• a boot liner which whilst separate from a boot as such will normally be within the boot before a user places his foot in the boot and
• a sock which will normally be on a user's foot before he places it within the boot and
· a tongue insert extending behind a boot tongue, where it is inserted, to extend to the top of the boot and/or its tongue or possibly above the boot and tongue as in a shin protector.
It is known to ohmically heat boots and boot liners for the comfort of wearers in use and to enable boots and liners to be moulded to the user's anatomy.
For the former use, heating elements are not ideally positioned.
The object of the present invention is to provide an improved boot heater.
According to the invention there is provided a boot heater comprising a boot or boot insert having a heating element in a tongue region of the boot or boot insert.
The tongue of a conventional boot is a strip of material extending from close to the toes up the front of the boot to its top, so arranged to cover internally the gap between two laced together sides of the boot. Usually tongues of boots have gussets connecting the tongue to sides of the boots. As used herein the "tongue region" is the region of the boot in which the tongue extends. The tongue region of a boot liner is the region of the liner underlying the tongue region of the lined boot.
It is believed that provision of a heating element in the tongue region will have the advantage of heating blood flowing in the user's foot in that arteries leading blood to the foot run down the frontal region of the lower leg, ankle and foot and spread out from the frontal region to the individual parts of the foot, namely the toes for instance.
The heating element can be provided in the tongue of the boot per se or the tongue region of a boot liner or indeed in the tongue area of a sock or a tongue insert to be worn in a boot. In a boot liner, the heating element can be in a tongue of the boot liner or another tongue region where the liner does not have a discrete tongue, for instance where the two sides of the liner can be wrapped one across the other in front of the user's leg or foot. Insofar as such an arrangement actually has two wrapped pieces underlying the tongue of the boot in use, it has two tongue regions. The heating element can be provided in either. In a sock, the heating element is likely to be in a specific tongue region.
The heating element can be an ohmic element, of either laminar resistive material or woven resistive material. In the preferred embodiment, an element comprised of elastomeric polymer material embedded with carbon particles, manufactured as a flexible sheet, extending underneath and between edge conductors is employed. The element can be provided in combination with a thermostatic device to enable switching current to the element on when area in which the device is installed is below a certain temperature. Alternatively, the heating element may itself be a substantially self-regulating heating element, the element having positive temperature coefficient characteristics, its resistance rising with temperature and typically obviating the need for a separate thermostat. Whilst provision of at least one battery or at least a battery holder within the boot or boot insert can be envisaged, normally the boot or boot insert will be provided with a connector for powering from an external battery or other source of electricity. Conveniently, the connector has a thermostatic device contact for providing temperature data to an external switching circuit.
Again, whilst electrical power is preferred for the heating element, chemical heating elements can be employed. It is also envisaged that the tongue region heating element can be augmented by at least one heating element positioned elsewhere in the boot or boot insert.
To help understanding of the invention, a specific embodiment thereof will now be described by way of example and with reference to the accompanying drawings, in which:
Figure 1 is a perspective view of a boot liner in accordance with the invention; Figure 2 is a scrap cross-sectional view on the line II- II through a tongue of the liner;
Figure 3 a scrap cross-sectional view at a larger scale on the line III- III through the tongue at a temperature detecting thermistor; and
Figure 4 is a circuit diagram of the heating element, thermistor and jack of the tongue of the boot liner of Figure 1. Referring to the drawings, a ski boot liner 1 has a tongue 2 (without gussets) in which an ohmic heating element 4 is provided. This is comprised of a layer 41 of polymeric material with embedded granular carbon content enclosed in a waterproof and vapour proof envelope 42 formed by applying an impermeable waterproof coating. Suitable coating materials are polyurethane, silicone or acrylic elastomers or more preferably a laminate such as a foil laminate, however other materials may be used. Conductors 45,46 are provided along edges of the layer of polymeric material with embedded carbon content in contact with the layer. Contacts to the conductors are provided at respective opposite corners and at one end. Suitable laminar heating elements of this form are available from Inditherm pic - w ,indi therm.com .
The liner is fabricated throughout of an outer wearing layer 5, a central insulation layer 6 and an inner layer 7 textured for a comfortable feel and in particular moisture wicking. The heating element is arranged between inner layer and the insulation layer, along the length of the tongue only. It is envisaged that the heating element will assist body heat in wicking moisture away. Since stitching through the element is liable to damage it, the element will not normally extend beyond the tongue proper towards the toes. A jack connector 11 is provided at the top of the tongue, with one wire 12 connected from one jack contact 121 to one upper end contact 14 of the heating element conductor 45 and another wire 15 connected from another jack contact 151 to the upper end contact 16 of the other element conductor 46.
A thermistor 17 is included in the heating element on the side of the polymeric material with embedded carbon content, which is innermost in use, for measuring the temperature at heating element's surface. One wire 19 of the thermistor is connected to the wire 15 connected to the edge conductor 46 of the element, connecting one side of the element and one side of the thermistor in common to the jack contact 151 and the other thermistor wire 20 is connected to a third jack contact 201.
In use a non-shown battery pack and control circuit provides power via a cable plugged into the jack connector. The battery pack and control circuit can be worn around the user's waist and the control circuit can use pulse width modulation to heat the tongue, bringing the temperature at the liner to one which is comfortable for the user. An alternative battery pack position is on the outsides of the boots or on top of the lacing/clamping region. Again the batteries can be accommodated in a cuff around the top of the boot.
An optional further heating element 21 is arranged in the heel and ankle of the boot liner. Its size and shape can be varied. It is provided with its own jack 22 at the top and back of the liner and its own thermistor 23. It can be controlled from a second circuit in the battery pack and control circuit or it could be provided with its own battery pack and control circuit.
Alternative, mains power supplies and control circuits can be provided for heating the liner to a temperature - detected by the thermistors - for drying of the liner and heating the liner to a softening temperature for moulding the liner to the shape of the users foot, ankle and lower leg inside a ski boot.
The invention is not intended to be restricted to the details of the above described embodiment. For instance, the thermistor wire 19 could be continued to the jack 11, with this being with a fourth contact for it. Further, I envisage that the heating element could be self-regulating whose resistance rises with temperature, obviating the need for a separate thermostat. Alternatively, I envisage using as an overlay to the heating surface a PTC (positive temperature coefficient of resistance) thermistor (each of low resistance (say 1/3 ohm) below a predetermined temperature) in series with the heating element. More than one such thermistor can be used in parallel with each other and each having a progressively higher critical temperature, whereby current is progressively reduced with temperature to obviate overheating.
As mentioned above the heating element can be incorporated in a sock, which is removable from the boot in the normal way. Again, it is envisaged that the heating element will assist body heat in wicking moisture away. It is further envisaged that the heating element will augment wicking and evaporation of moisture away from the body achieved by conventional moisture control features such as capillaries and/or air channels already provided in socks and/or boots.
Again, I can envisage a tongue insert in accordance with my invention. The insert being narrow as inserted in a boot behind a boot tongue and possibly wider in the region of the wearer's shin where the tongue insert could extend above the boot. It can be provided with a strap to pass behind the user's leg or under and/or behind the ankle, to obviate the tongue insert migrating up the user's leg and out of the boot.

Claims

CLAIMS:
1. A boot heater comprising a boot or boot insert having a heating element in a tongue region of the boot or boot insert.
2. A boot heater as claimed in claim 1, wherein the heating element is incorporated in a tongue of a boot.
3. A boot heater as claimed in claim 1, wherein the heating element is incorporated in a boot liner or boot sock or tongue insert underlying the tongue region of the boot in use.
4. A boot heater as claimed in claim 3, wherein:
· the liner is fabricated of an outer wearing layer, a central insulation layer and an inner layer textured for comfortable feel and/or wicking and
• the heating element is arranged between inner layer and the insulation layer, along the length of the tongue.
5. A boot heater as claimed in claim 3 or claim 4, wherein the heating element is incorporated in a tongue of the boot liner or one side piece of the liner adapted to be wrapped over or under another such side piece in front of the user's leg or foot.
6. A boot heater as claimed in any preceding claim, wherein the heating element is an ohmic element, of either laminar resistive material or woven resistive material.
7. A boot heater as claimed in any preceding claim, wherein the heating element is a substantially self-regulating heating element.
8. A boot heater as claimed in claim 6 or claim 7, wherein the heating element is of elastomeric polymer material embedded with carbon particles, extending underneath and between edge conductors.
9. A boot heater as claimed in claim 6, claim 7 or claim 8, including a thermostatic device, preferably a thermistor, to enable on switching of current to the element when the tongue region is below a certain temperature.
10. A boot heater as claimed in claim 6, claim 7 or claim 8, including one or more positive temperature coefficient thermistor(s) in series with the heating element to restrict current on temperature rise.
11. A boot heater as claimed in any one of claims 6 to 10, including at least one battery or at least a battery holder within the boot or boot insert.
12. A boot heater as claimed in any one of claims 6 to 10, including a connector for powering from an external battery or other source of electricity.
13. A boot heater as claimed in claim 12, wherein the connector has a thermostatic device contact for providing temperature data to an external switching circuit.
14. A boot heater as claimed in any one of claims 1 to 5, wherein the heating element is a chemical heating element.
15. A boot heater as claimed in any preceding claim, wherein the heating element in the tongue region is augmented by at least one other heating element positioned elsewhere in the boot or boot insert.
16. A boot heater as claimed in claim 15, wherein the other heating element is arranged in the heel and ankle region of the boot or liner.
PCT/GB2013/052233 2012-08-24 2013-08-23 Boot heater WO2014030014A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1215268.2 2012-08-24
GBGB1215268.2A GB201215268D0 (en) 2012-08-24 2012-08-24 Boot heater

Publications (1)

Publication Number Publication Date
WO2014030014A1 true WO2014030014A1 (en) 2014-02-27

Family

ID=47045479

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2013/052233 WO2014030014A1 (en) 2012-08-24 2013-08-23 Boot heater

Country Status (2)

Country Link
GB (1) GB201215268D0 (en)
WO (1) WO2014030014A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3581053A1 (en) 2018-06-13 2019-12-18 Sarl Sp Removable tongue for injected liner, associated liner and shoe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2298299A (en) * 1941-12-31 1942-10-13 Colvinex Corp Electrically heated boot
EP0824874A2 (en) * 1996-08-09 1998-02-25 Fancyform Design Engineering Entwicklungs- und Vertriebs GmbH Innerboot, in particular for skibooth or mountainboots
US20050189344A1 (en) * 2004-03-01 2005-09-01 Chris Bachman Boot/ski boot softener and warmer
CN201005135Y (en) * 2007-01-17 2008-01-16 杨忠宇 Multifunctional electric heating shoes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2298299A (en) * 1941-12-31 1942-10-13 Colvinex Corp Electrically heated boot
EP0824874A2 (en) * 1996-08-09 1998-02-25 Fancyform Design Engineering Entwicklungs- und Vertriebs GmbH Innerboot, in particular for skibooth or mountainboots
US20050189344A1 (en) * 2004-03-01 2005-09-01 Chris Bachman Boot/ski boot softener and warmer
CN201005135Y (en) * 2007-01-17 2008-01-16 杨忠宇 Multifunctional electric heating shoes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3581053A1 (en) 2018-06-13 2019-12-18 Sarl Sp Removable tongue for injected liner, associated liner and shoe
FR3082400A1 (en) * 2018-06-13 2019-12-20 Sarl Sp REMOVABLE TONGUE FOR INJECTED BOOT, ASSOCIATED BOOT AND SHOE

Also Published As

Publication number Publication date
GB201215268D0 (en) 2012-10-10

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