EP0330974A2 - Chaussure en deux parties, en particulier adapté aux terrains enneigés - Google Patents
Chaussure en deux parties, en particulier adapté aux terrains enneigés Download PDFInfo
- Publication number
- EP0330974A2 EP0330974A2 EP89103013A EP89103013A EP0330974A2 EP 0330974 A2 EP0330974 A2 EP 0330974A2 EP 89103013 A EP89103013 A EP 89103013A EP 89103013 A EP89103013 A EP 89103013A EP 0330974 A2 EP0330974 A2 EP 0330974A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sock
- footwear
- shoe
- panels
- bootleg
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 18
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 4
- 239000011810 insulating material Substances 0.000 claims abstract description 3
- 239000004744 fabric Substances 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 239000004753 textile Substances 0.000 claims description 2
- 230000000875 corresponding effect Effects 0.000 claims 2
- 230000006378 damage Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229920001084 poly(chloroprene) Polymers 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000004826 seaming Methods 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- -1 as snow Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920001821 foam rubber Polymers 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B19/00—Shoe-shaped inserts; Inserts covering the instep
Definitions
- the present disclosure concerns footwear,made of two separate parts which can be assembled and disassembled as desired, particularly useful in cold climate and bad weather; more specifically it refers to a footwear to be used on snowy ground, in particular for holiday and/or sport.
- Footwear made of separate pieces have been known since long; apart from overshoes or galoshes to be worn on the normal shoes, which cannot be compared with the subject matter of the present invention, mention can be made of after-ski boots or of some special types of shoes for cross-country ski.
- shoes are formed by an outer body, which will be hereinafter indicated as “shoe” or “bootleg” depending on its height, into which is introduced a separate sock, which can be freely fitted in the body and removed therefrom, and is directly inserted on the user's foot.
- the body has the task of protecting the inner sock and the user's foot against mechanical injuries they may suffer in use and of providing a sole having appropriate flexibility and stiffness characteristics as regards walking, whilst the sole affords adequate features of impermeability and thermal insulation to keep the user's foot dry and warm in spite of the bad atmospheric and environmental conditions.
- foamed polyurethane materials of the close cell injection type are generally used to obtain a single-piece sock.
- the foam is sometimes caused to collapse so as to thicken it and to create an area of greater stiffness with respect to the other parts, in particular at the insole, to give the foot a sufficiently rigid support; however, this method gives rise to a drawback represented by the loss of thermal insulation which takes place at the thicker area.
- these polyurethane materials which - as to impermeability and thermal insulation are quite appropriate - have some defects: in particular they require the use of dangerous materials, as the isocyanates utilized to produce polyurethane, and may create toxicity problems for the user, if the polymerization chemical reaction has not been carried out properly and minimum amounts of non-reacted isocyanate remain in the product;further, they hydrolyze by themselves, so that after some time their mechanical characteristics deteriorate and this degradation is particularly significant if the material comes into contact with water or remains in an ambient at high humidity level; at last they are liable to tear and anyhow scarcely resistant to mechanical damages.
- the problem has been solved by referring the height of the inner sock to that of the outer body and committing to the latter the protection of the inner sock against external damages.
- the outer body is constituted by a boot, as for instance a conventional "trunk" of plastic material, but with a relevant increase in the footwear's weight; on the contrary, for shoes as those especially used for cross-country ski, the inner sock does not extend substantially over the shoe's edge, i.e. remains at the level of the user's malleoli.
- the present invention aims to provide a two-piece footwear, particularly suitable in bad climate and/or on snowy ground, which is formed by a low outer body and of a high, inner removable sock, and is devoid of all the above indicated disadvantages.
- the subject matter of the invention is a footwear which can be divided into two separate parts and is substantially composed of an outer protective shoe made of plastomeric or elastomeric material, having appropriate stiffness and resistance, and of an inner sock made of a soft, impermeable and thermally insulating material,which can be freely introduced and removed with respect to said outer shoe, characterized in that it comprises, in combination with each other : - said outer shoe of substantially reduced height,intended to protect insole, sidewalls, heel and user's instep,and - said inner sock, made of panels of foamed chloroprene polymer joined end-to-end, said panels being provided on both surfaces with a reinforcing fabric firmly secured to the foam layer, the sock comprising a foot corresponding to the outer shoe and a bootleg extending in height externally of the shoe.
- the footwear according to the invention is composed of a low outer body (1), hereinafter called “shoe”, substantially able to protect insole, sidewalls, heel and user's instep, and of an inner sock (2), which can be freely removed and inserted with respect to said body, composed of a portion called “foot”, substantially coincident with the shoe, and of a portion called “bootleg”, extending outside the body over the level of the user's instep towards his knee.
- a low outer body (1) hereinafter called “shoe”
- shoe substantially able to protect insole, sidewalls, heel and user's instep
- an inner sock (2) which can be freely removed and inserted with respect to said body, composed of a portion called “foot”, substantially coincident with the shoe, and of a portion called “bootleg”, extending outside the body over the level of the user's instep towards his knee.
- the body can be made in any whichever manner, for instance by assembling separate parts made of a same or of a different material; however, in a particularly convenient embodiment, it is constituted by a monolithic unit, i.e. a single piece, obtained by moulding from elastomeric materials or plastic resins of the injection type, and comprises a sole portion (11) of appropriate thickness and an uppers portion (12) which is thinner and consequently softer and more flexible.
- the vamp - at the instep - is provided with a cut (13) extending along the toe-heel axial direction so as to provide two skirtings (14) and (15) which might have such a width as to be partially superimposed.
- one of said skirtings is provided on its outer surface with a strap (16) linked to it for instance by a boss or any other suitable means, of such a width as to cover the instep and specifically said cut.
- the strap carries, mounted onto it, a fastening element (17)able to be connected to a corresponding device, as for instance a hook (18) mounted on the facing skirting, so as to obtain the shoe closure and to assure consequently - in use - a firm anchorage of the sock inside the shoe and to prevent the penetration of foreign material, as snow, mud, earth and the like through the cut provided on the shoe.
- a fastening element (17) able to be connected to a corresponding device, as for instance a hook (18) mounted on the facing skirting, so as to obtain the shoe closure and to assure consequently - in use - a firm anchorage of the sock inside the shoe and to prevent the penetration of foreign material, as snow, mud, earth and the like through the cut provided on the shoe.
- Figure 3 represents a straight axial section of the shoe : it can be noted that the sole has on its inner surface some lightening blind recesses (19).
- the inner surface of the sole has a profile able to fit preferably with the corresponding external surface of the sock's sole which is properly stiffened, as explained herebelow.
- the inner sock As regards the inner sock, first of all the material constituting it is a close-cell polychloroprene rubber foam, a convenient example of which is the material commonly known as "Neoprene”, registered Trade Mark of Du Pont; this foam does not hydrolyze, so that it neither shows any degradation of its mechanical characteristics for this reason, nor involves any toxicity problem.
- the semi-finished product used to build up the sock is a slab (21) of the above indicated foam, covered on both faces by a fabric (22), (23) of any suitable textile fiber, but more specifically of nylon, which protects the foam against external mechanical injuries, in particular abrasion, tears, strokes from sharp bodies.
- the sock is formed of any whichever number of panels of proper shape, cut from the slab and joined together end-to-end; an appropriate solution is represented by the set of four panels shown in FIG.4.
- the jointing is performed by any suitable method, in particular by bonding with adhesive agents. This method assures the mechanical resistance of the joining and the impermeability even in the joining area.
- the sock is obtained by joining four different panels : one (24) corresponding to the sole, one (25) joined in tubular form, corresponding to the bootleg and the heel, and two (26), (27) corresponding to the sidewalls and joined together at the instep.
- the panels are seamed along the jointing lines; however, to maintain the impermeability of the panel also at the seaming zone, seams (29) are not passing through, but connect the two panels (21), (28), in FIG.5 joined together, only at the panel's outer surface and at the median portion external with respect to the thickness of the neoprene slab.
- one or more of the joining lines are instead covered with a tape (30) of impermeable fabric, particularly a nylon net thermally welded to the underlying fabric.
- an additional sole (31), made of elastomeric or plastomeric material and sufficiently thin but having appropriate resistance and flexibility characteristics, is bonded on the sock sole. Said sole extends in width as far as to cover the peripheral joining line which connects panel (24) with the other three panels.
- Sole (31) enables the sock to be used separately from the shoe, as an independent footwear, for light uses, for instance driving a car (the driver must have a high sensitiveness on pedals) or walking on a ground free from particular obstacles or sufficiently smooth (streets and pavements, even if snowy or muddy) or indoor.
- the upper part of the bootleg shows - preferably in rear axial position - a cut directed from the edge towards the heel, whose contour is connected to a sheet (32) of impermeable material such as polychloroprene, of substantially triangular shape, which is connected at a vertex to the cut and has the opposite base at said edge, so as to allow an enlargement of the sock opening without in any case affecting the impermeability and thermal insulation characteristics of the same.
- panel (25) forming the bootleg is turned outward and downward and the turn-down is blocked and sewn, for instance circumferentially, about the bootleg's outer surface.
- the above described footwear shows many advantages over the conventional two-piece shoes. First of all, it is quite light and consequently less tiring because the heavier part of the unit, namely the outer body, is a show and not a boot, and is conveniently lightened in its sole.
- the inner sock has very good and permanent impermeability and thermal insulation characteristics : also, the fact of being covered on both faces with an adequate fabric, facilitates the insertion and the removal of the sock, as well as the introduction of the user's foot and the relative unthreading. Moreover, the fabric covering the sock's outer surface protects the part of the sock outside the shoe against any external mechanical injury which may occur in use, as strokes or creeping against sharp or pointed objects which would irreparably damage the polychloroprene slab.
- the sock can be an independent footwear which, when worn, is highly appreciated for its lightness and comfort.
- the sock is built up in a simple and cheap way by assembling separate panels by bonding and seaming, such methods assure the physical integrity of the sock for a long time and do not compromise in any way its impermeability characteristics.
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8820791U IT213709Z2 (it) | 1988-03-04 | 1988-03-04 | Calzatura scomponibile particolarmente adatta perl'impiego su terreni innevati. |
IT2079188U | 1988-03-04 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0330974A2 true EP0330974A2 (fr) | 1989-09-06 |
EP0330974A3 EP0330974A3 (fr) | 1991-03-27 |
EP0330974B1 EP0330974B1 (fr) | 1994-06-29 |
Family
ID=11172118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89103013A Expired - Lifetime EP0330974B1 (fr) | 1988-03-04 | 1989-02-21 | Chaussure en deux parties, en particulier adapté aux terrains enneigés |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0330974B1 (fr) |
AT (1) | ATE107839T1 (fr) |
DE (2) | DE68916448T2 (fr) |
FR (1) | FR2627959B1 (fr) |
IT (1) | IT213709Z2 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2424716A1 (fr) * | 1978-05-03 | 1979-11-30 | Delery Marc | Chaussure de sport |
DE8005418U1 (de) * | 1979-03-02 | 1980-10-02 | Victor Cuoio Shoes S.P.A., Vaccolino, Ferrara (Italien) | Stiefel, insbesondere Apres-Ski-Stiefel |
US4550446A (en) * | 1982-03-31 | 1985-11-05 | Jack Herman | Insert type footwear |
-
1988
- 1988-03-04 IT IT8820791U patent/IT213709Z2/it active
-
1989
- 1989-02-21 EP EP89103013A patent/EP0330974B1/fr not_active Expired - Lifetime
- 1989-02-21 AT AT89103013T patent/ATE107839T1/de not_active IP Right Cessation
- 1989-02-21 DE DE68916448T patent/DE68916448T2/de not_active Expired - Fee Related
- 1989-03-02 DE DE8902511U patent/DE8902511U1/de not_active Expired
- 1989-03-06 FR FR8902899A patent/FR2627959B1/fr not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2424716A1 (fr) * | 1978-05-03 | 1979-11-30 | Delery Marc | Chaussure de sport |
DE8005418U1 (de) * | 1979-03-02 | 1980-10-02 | Victor Cuoio Shoes S.P.A., Vaccolino, Ferrara (Italien) | Stiefel, insbesondere Apres-Ski-Stiefel |
US4550446A (en) * | 1982-03-31 | 1985-11-05 | Jack Herman | Insert type footwear |
Also Published As
Publication number | Publication date |
---|---|
IT8820791V0 (it) | 1988-03-04 |
DE68916448D1 (de) | 1994-08-04 |
DE8902511U1 (de) | 1989-04-27 |
ATE107839T1 (de) | 1994-07-15 |
FR2627959A1 (fr) | 1989-09-08 |
FR2627959B1 (fr) | 1995-05-05 |
DE68916448T2 (de) | 1995-02-09 |
EP0330974B1 (fr) | 1994-06-29 |
EP0330974A3 (fr) | 1991-03-27 |
IT213709Z2 (it) | 1990-01-22 |
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