US20110179670A1 - Multipurpose boot - Google Patents
Multipurpose boot Download PDFInfo
- Publication number
- US20110179670A1 US20110179670A1 US13/061,375 US200913061375A US2011179670A1 US 20110179670 A1 US20110179670 A1 US 20110179670A1 US 200913061375 A US200913061375 A US 200913061375A US 2011179670 A1 US2011179670 A1 US 2011179670A1
- Authority
- US
- United States
- Prior art keywords
- base
- footwear
- foot
- regions
- fitting portion
- 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.)
- Abandoned
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B21/00—Heels; Top-pieces or top-lifts
- A43B21/36—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means
- A43B21/39—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means by rib groove
- A43B21/40—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means by rib groove by dovetail
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B21/00—Heels; Top-pieces or top-lifts
- A43B21/02—Heels; Top-pieces or top-lifts characterised by the material
- A43B21/20—Heels; Top-pieces or top-lifts characterised by the material plastics
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B21/00—Heels; Top-pieces or top-lifts
- A43B21/36—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means
- A43B21/42—Heels with replaceable or adjustable parts, e.g. top lift
Definitions
- the present invention relates to the field of footwear. More precisely, footwear of the invention possesses means for receiving either a plurality of interchangeable heels, or else a member for rehabilitation purposes.
- footwear In the field of footwear, there exists a demand to be able to change the appearance of a piece of footwear, in particular women's footwear, with the possibility of changing the shape or the material or the color of the heel of the footwear while retaining the same foot-fitting portion. Furthermore, certain kinds of footwear may constitute instruments for training or rehabilitation by providing the user's heel with different kinds of bearing on the ground, depending on whether it is necessary to work on balance, ankle strength, bearing of the foot on the ground, . . . .
- the present invention seeks to satisfy appropriately the need for an interchangeable heel by providing a structure for the heel and the footwear that receives it that is suitable for withstanding the high forces to which the heel is subjected while the footwear is being worn.
- the present invention provides footwear comprising a foot-fitting portion with a rear portion, a base fitted under the rear portion of the foot-fitting portion, a rear bearing member of the footwear for bearing on the ground that is releasably fastened to the base by close-fitting assembly means, and means for automatic locking and manual unlocking of said assembly means, the footwear being characterized in that the base is a thin plate of plastics material having at least three tapped metal inserts (nuts) for receiving three fastener screws for fastening the base under the rear portion of the foot-fitting portion of the footwear.
- the inserts are as far apart from one another as possible and they are received in regions of extra thickness of the base, outside the assembly means.
- the heel includes recesses for housing said regions of extra thickness on being assembled with the base.
- the assembly means are constituted by a male dovetail projecting from the base and a female dovetail formed in the heel.
- the regions of extra thickness having the nuts embedded therein are located outside the male dovetail, and the heel includes corresponding recesses for receiving these regions of extra thickness during mutual engagement and assembly of the two dovetails.
- the visible peripheral portion of the base can thus continue to be fine.
- FIG. 1 is a perspective view from beneath of the rear portion of a piece of footwear of the invention.
- FIG. 2 is a section view on plane II-II of FIG. 1 , with the heel and the base assembled together.
- the piece of footwear of the invention comprises a foot-fitting portion 1 with the rear portion 1 a thereof being shown.
- this foot-fitting portion comprises, in known manner: an insole; a welt; a filler having a shank mounted thereon; and a sole.
- a base 2 is fitted on the bottom and is used as a removable assembly part for a heel 3 .
- the base is a thin plate of synthetic material (e.g. thermoplastic material) and along its longitudinal axis XX, corresponding to the long direction of the footwear, it possesses a tenon 4 in the form of a male dovetail projecting from the free surface 2 a of the thin plate.
- a resilient tongue 5 integrally molded with the tenon is suitable for being resiliently retracted into a housing 6 in the tenon by pushing one end 5 a of the tongue down towards the sole, which end 5 a projects beyond the tenon towards the toe of the footwear.
- the visible surface 5 b of the tongue 5 lies in the same plane as the visible surface 4 a of the dovetail 4 .
- This surface carries a stud 7 , which thus projects from the plane when the tongue is at rest and which is retracted beneath the plane when the tongue 5 is pushed down into the housing 6 by acting on the pusher 5 a.
- the thin plate includes regions of extra thickness 8 , 9 , and 10 , the first two being situated at the front of the base (front relative to the front of the footwear), on either side of the tenon 4 , while the third is situated at the back of the tenon, on the axis thereof.
- Each region of extra thickness constitutes a block overmolded on a metal insert 11 , 12 , or 13 that is constituted by a nut and that is suitable for receiving a screw such as the screws 14 and 15 in FIG. 2 .
- the heel 3 of the footwear possesses assembly means complementary to those of the base 2 . They are constituted by a female dovetail 16 , by a recess 17 formed in the base of the dovetail 16 , and by recesses 18 , 19 , and 20 situated outside the female dovetail 16 , in a relative layout identical to that of the regions of extra thickness and the tenon of the base 2 .
- the base is fitted to the foot-fitting portion of the footwear by means of screws 14 and 15 passing through the bottom of the rear portion 1 a of the footwear, as shown in FIG. 2 .
- This fastening is particularly stable since the three nuts 11 , 12 , and 13 are spaced apart from one another.
- the base is fastened permanently to the footwear.
- the heel is then slid onto the base along arrow F in FIG. 1 .
- the dovetails engage one in the other until the stud 7 comes into contact with the front edge of the heel.
- the stud advantageously possesses a slope that serves to avoid blocking the engagement movement, so the movement continues by causing the tongue 5 to be deflected into the inside of the housing 6 .
- the stud 7 is received in the recess 17 of the heel by the resilient return of the tongue to its rest position.
- the heel is then locked on the base.
- the fastening is a tight-fit because of compression stress that exists on the heel between the sloping flanks of the female dovetail and the top surface 3 a of the heel, with the dimensions thereof and the dimensions of the base being arranged to ensure that this assembly prestress occurs.
- the regions of extra thickness are of dimensions that are smaller than the dimensions of the housings that receive them so that there is no interference between them and the active assembly means.
- the above description relates to a town shoe, but the invention is not limited to that kind of shoe.
- the invention also applies to footwear for performing technical functions such as orthopedic footwear or footwear for sports or medical use.
- the foot-fitting portion of such footwear is adapted to holding the foot to the function or the exercise for which the footwear is intended, while the rear portion of the foot-fitting portion, fitted with the base as described above, can be fitted with a member that is adapted to the nature of the support that it is desired to obtain (point support by means of a sphere, off-centered support, . . . ).
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
Footwear comprising a foot-fitting portion with a rear portion (1 a), a base (2) fitted under the rear portion of the foot-fitting portion, a heel (3) that is releasably fastened to the base (2) by close-fitting assembly means (4, 16, 2 a, 3 a), and means (5, 7, 17) for automatic locking and manual unlocking of said assembly means, wherein the base (2) is a thin plate of plastics material having at least three tapped metal inserts (nuts) (11, 12) for receiving three fastener screws (14, 15) for fastening the base (2) under the rear portion (1 a) of the foot-fitting portion of the footwear.
Description
- The present invention relates to the field of footwear. More precisely, footwear of the invention possesses means for receiving either a plurality of interchangeable heels, or else a member for rehabilitation purposes.
- In the field of footwear, there exists a demand to be able to change the appearance of a piece of footwear, in particular women's footwear, with the possibility of changing the shape or the material or the color of the heel of the footwear while retaining the same foot-fitting portion. Furthermore, certain kinds of footwear may constitute instruments for training or rehabilitation by providing the user's heel with different kinds of bearing on the ground, depending on whether it is necessary to work on balance, ankle strength, bearing of the foot on the ground, . . . .
- Proposals have already been made for many years for a removable heel to provide an interchangeability option, but without that culminating in a commercially satisfactory solution. The means that make interchangeability possible have always been complicated, and implementing them often requires recourse to tooling that the user does not master thoroughly. When the heel can be assembled and removed by hand, the quality of the connection is not sufficient to ensure that the footwear can be used safely. Finally, under other circumstances, the materials used do not present sufficient strength to enable prolonged use of the footwear.
- Those known means are also unsatisfactory concerning footwear that has a technical function and that is stressed in a manner that is even more severe than ordinary footwear.
- The present invention seeks to satisfy appropriately the need for an interchangeable heel by providing a structure for the heel and the footwear that receives it that is suitable for withstanding the high forces to which the heel is subjected while the footwear is being worn.
- The present invention provides footwear comprising a foot-fitting portion with a rear portion, a base fitted under the rear portion of the foot-fitting portion, a rear bearing member of the footwear for bearing on the ground that is releasably fastened to the base by close-fitting assembly means, and means for automatic locking and manual unlocking of said assembly means, the footwear being characterized in that the base is a thin plate of plastics material having at least three tapped metal inserts (nuts) for receiving three fastener screws for fastening the base under the rear portion of the foot-fitting portion of the footwear.
- It has been found during thorough testing of the strength of such footwear that breakage occurs at the location where the base is fastened to the foot-fitting portion. The prior art proposes ordinary fastening by means of through screws that are found not to be strong enough, given the small thickness of the base that receives them. This small thickness is required for reasons of the appearance of the footwear so that there is no too-visible discontinuity between the heel and the footwear.
- In preferred manner, the inserts are as far apart from one another as possible and they are received in regions of extra thickness of the base, outside the assembly means.
- The heel includes recesses for housing said regions of extra thickness on being assembled with the base.
- The assembly means are constituted by a male dovetail projecting from the base and a female dovetail formed in the heel. The regions of extra thickness having the nuts embedded therein are located outside the male dovetail, and the heel includes corresponding recesses for receiving these regions of extra thickness during mutual engagement and assembly of the two dovetails. The visible peripheral portion of the base can thus continue to be fine.
- Other characteristics and advantages of the invention appear from the description given below of an embodiment of the invention.
- Reference is made to the accompanying drawing, in which:
-
FIG. 1 is a perspective view from beneath of the rear portion of a piece of footwear of the invention; and -
FIG. 2 is a section view on plane II-II ofFIG. 1 , with the heel and the base assembled together. - In the figures, the piece of footwear of the invention comprises a foot-fitting
portion 1 with therear portion 1 a thereof being shown. At its bottom, this foot-fitting portion comprises, in known manner: an insole; a welt; a filler having a shank mounted thereon; and a sole. - A
base 2 is fitted on the bottom and is used as a removable assembly part for a heel 3. At its periphery, the base is a thin plate of synthetic material (e.g. thermoplastic material) and along its longitudinal axis XX, corresponding to the long direction of the footwear, it possesses atenon 4 in the form of a male dovetail projecting from thefree surface 2 a of the thin plate. In the center of the tenon, a resilient tongue 5 integrally molded with the tenon is suitable for being resiliently retracted into ahousing 6 in the tenon by pushing oneend 5 a of the tongue down towards the sole, which end 5 a projects beyond the tenon towards the toe of the footwear. In its rest position, thevisible surface 5 b of the tongue 5 lies in the same plane as thevisible surface 4 a of thedovetail 4. This surface carries astud 7, which thus projects from the plane when the tongue is at rest and which is retracted beneath the plane when the tongue 5 is pushed down into thehousing 6 by acting on thepusher 5 a. - Outside the
tenon 4, the thin plate includes regions ofextra thickness tenon 4, while the third is situated at the back of the tenon, on the axis thereof. - Each region of extra thickness constitutes a block overmolded on a
metal insert screws FIG. 2 . - The heel 3 of the footwear possesses assembly means complementary to those of the
base 2. They are constituted by afemale dovetail 16, by arecess 17 formed in the base of thedovetail 16, and byrecesses female dovetail 16, in a relative layout identical to that of the regions of extra thickness and the tenon of thebase 2. - The base is fitted to the foot-fitting portion of the footwear by means of
screws rear portion 1 a of the footwear, as shown inFIG. 2 . This fastening is particularly stable since the threenuts FIG. 1 . The dovetails engage one in the other until thestud 7 comes into contact with the front edge of the heel. The stud advantageously possesses a slope that serves to avoid blocking the engagement movement, so the movement continues by causing the tongue 5 to be deflected into the inside of thehousing 6. At the end of engagement, thestud 7 is received in therecess 17 of the heel by the resilient return of the tongue to its rest position. The heel is then locked on the base. The fastening is a tight-fit because of compression stress that exists on the heel between the sloping flanks of the female dovetail and thetop surface 3 a of the heel, with the dimensions thereof and the dimensions of the base being arranged to ensure that this assembly prestress occurs. The regions of extra thickness are of dimensions that are smaller than the dimensions of the housings that receive them so that there is no interference between them and the active assembly means. - The above description relates to a town shoe, but the invention is not limited to that kind of shoe. The invention also applies to footwear for performing technical functions such as orthopedic footwear or footwear for sports or medical use. The foot-fitting portion of such footwear is adapted to holding the foot to the function or the exercise for which the footwear is intended, while the rear portion of the foot-fitting portion, fitted with the base as described above, can be fitted with a member that is adapted to the nature of the support that it is desired to obtain (point support by means of a sphere, off-centered support, . . . ).
Claims (5)
1. Footwear (1) comprising a foot-fitting portion with a rear portion (1 a), a base (2) fitted under the rear portion of the foot-fitting portion, a rear bearing member (3) of the footwear for bearing on the ground that is releasably fastened to the base (2) by close-fitting assembly means (4, 16, 2 a, 3 a), and means (5, 5 a, 7, 17) for automatic locking and manual unlocking of said assembly means, wherein the base (2) is a thin plate of plastics material having at least three tapped metal inserts (nuts) (11, 12, 13) for receiving three fastener screws (14, 15) for fastening the base (2) under the rear portion (1 a) of the foot-fitting portion of the footwear.
2. Footwear according to claim 1 , wherein the inserts (11, 12, 13) are as far apart from one another as possible and they are received in regions of extra thickness (8, 9, 10) of the base (2), outside the assembly means (4).
3. Footwear according to claim 2 , wherein the bearing member (3) includes recesses (18, 19, 20) for housing said regions of extra thickness when assembled with the base (2).
4. Footwear according to claim 3 , wherein the assembly means are constituted by a tenon (4) in the form of a male dovetail projecting from the base (2) and a female dovetail (16) formed in the bearing member (3).
5. Footwear according to claim 4 , wherein the regions of extra thickness (8, 9, 10) in which the nuts (11, 12, 13) are embedded are disposed outside the male dovetail (4), while the bearing member (3) includes corresponding recesses (18, 19, 20) for receiving said regions of extra thickness when the two dovetails (4, 16) are mutually engaged and assembled together.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0804724A FR2935231B1 (en) | 2008-08-27 | 2008-08-27 | MULTI-PURPOSE SHOE |
FR0804724 | 2008-08-27 | ||
PCT/FR2009/001030 WO2010023380A2 (en) | 2008-08-27 | 2009-08-25 | Multipurpose boot |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110179670A1 true US20110179670A1 (en) | 2011-07-28 |
Family
ID=40524586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/061,375 Abandoned US20110179670A1 (en) | 2008-08-27 | 2009-08-25 | Multipurpose boot |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110179670A1 (en) |
EP (1) | EP2348911A2 (en) |
BR (1) | BRPI0917718A2 (en) |
FR (1) | FR2935231B1 (en) |
WO (1) | WO2010023380A2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140259777A1 (en) * | 2013-03-15 | 2014-09-18 | Kimberly Morris Thill | Shoes with interchangeable heels |
US20190116931A1 (en) * | 2012-08-03 | 2019-04-25 | Flexheel Gmbh | Sole part |
US10426217B1 (en) * | 2015-12-09 | 2019-10-01 | Domenick Mainolfi | Footwear with interchangeable sections |
US20200268102A1 (en) * | 2019-02-26 | 2020-08-27 | Mona Carter | Convertible Shoe Assembly |
US11737517B2 (en) | 2019-05-28 | 2023-08-29 | Alice G. Alviani | Shoe having an interchangeable heel |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105581437A (en) * | 2016-01-29 | 2016-05-18 | 太仓卡斯特姆新材料有限公司 | Portable shoe with replaceable shoe heel |
CN105942669B (en) * | 2016-07-07 | 2018-04-20 | 曾水有 | The heel harness of convenient dismounting |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2008784A (en) * | 1931-11-17 | 1935-07-23 | Joseph W Comiskey | Heel attachment |
US2195324A (en) * | 1939-05-03 | 1940-03-26 | Elmer H Brunmark | Shoe with detachable heel |
US4805320A (en) * | 1987-10-26 | 1989-02-21 | Goldenberg Tzvika Y | Shoe with exchangeable heel |
US5025574A (en) * | 1989-10-24 | 1991-06-25 | Lasher Iii William W | Replaceable shoe heel assembly |
US5058290A (en) * | 1989-08-28 | 1991-10-22 | Timothy Koehl | Shoe construction with self seating removable heel |
US5456026A (en) * | 1993-11-22 | 1995-10-10 | Lewis International Importing/Exporting, Inc. | Shoe with interchangeable heels |
US5519950A (en) * | 1995-04-17 | 1996-05-28 | Wang; Chia-Chin | Structure for engaging a heel to a shoe |
US5692322A (en) * | 1996-10-03 | 1997-12-02 | Lombardino; Thomas D. | Combination athletic shoes and plometric training device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB176854A (en) * | 1920-12-03 | 1922-03-03 | Joseph Macquinn | Improvements in heel pads for boots and shoes |
GB534404A (en) * | 1939-12-27 | 1941-03-06 | Joseph Coggans | Improvements in or relating to rubber or other heels for foot-wear |
FR1032179A (en) * | 1950-02-09 | 1953-06-30 | Removable heel enhancements for shoes | |
FR2907318B1 (en) * | 2006-10-24 | 2009-04-17 | Chantal Lespour | INTERCHANGEABLE HEEL SYSTEM, METHOD FOR MANUFACTURING THE HEEL, AND ASSOCIATED SHOE. |
-
2008
- 2008-08-27 FR FR0804724A patent/FR2935231B1/en not_active Expired - Fee Related
-
2009
- 2009-08-25 WO PCT/FR2009/001030 patent/WO2010023380A2/en active Application Filing
- 2009-08-25 EP EP09736250A patent/EP2348911A2/en not_active Withdrawn
- 2009-08-25 BR BRPI0917718A patent/BRPI0917718A2/en not_active IP Right Cessation
- 2009-08-25 US US13/061,375 patent/US20110179670A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2008784A (en) * | 1931-11-17 | 1935-07-23 | Joseph W Comiskey | Heel attachment |
US2195324A (en) * | 1939-05-03 | 1940-03-26 | Elmer H Brunmark | Shoe with detachable heel |
US4805320A (en) * | 1987-10-26 | 1989-02-21 | Goldenberg Tzvika Y | Shoe with exchangeable heel |
US5058290A (en) * | 1989-08-28 | 1991-10-22 | Timothy Koehl | Shoe construction with self seating removable heel |
US5025574A (en) * | 1989-10-24 | 1991-06-25 | Lasher Iii William W | Replaceable shoe heel assembly |
US5456026A (en) * | 1993-11-22 | 1995-10-10 | Lewis International Importing/Exporting, Inc. | Shoe with interchangeable heels |
US5519950A (en) * | 1995-04-17 | 1996-05-28 | Wang; Chia-Chin | Structure for engaging a heel to a shoe |
US5692322A (en) * | 1996-10-03 | 1997-12-02 | Lombardino; Thomas D. | Combination athletic shoes and plometric training device |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190116931A1 (en) * | 2012-08-03 | 2019-04-25 | Flexheel Gmbh | Sole part |
US10952500B2 (en) * | 2012-08-03 | 2021-03-23 | Flexheel Gmbh | Sole part |
US20140259777A1 (en) * | 2013-03-15 | 2014-09-18 | Kimberly Morris Thill | Shoes with interchangeable heels |
US9486032B2 (en) * | 2013-03-15 | 2016-11-08 | Kimberly Morris Thill | Shoes with interchangeable heels |
US10426217B1 (en) * | 2015-12-09 | 2019-10-01 | Domenick Mainolfi | Footwear with interchangeable sections |
US20200268102A1 (en) * | 2019-02-26 | 2020-08-27 | Mona Carter | Convertible Shoe Assembly |
US11737517B2 (en) | 2019-05-28 | 2023-08-29 | Alice G. Alviani | Shoe having an interchangeable heel |
Also Published As
Publication number | Publication date |
---|---|
FR2935231A1 (en) | 2010-03-05 |
EP2348911A2 (en) | 2011-08-03 |
WO2010023380A2 (en) | 2010-03-04 |
FR2935231B1 (en) | 2010-09-24 |
BRPI0917718A2 (en) | 2016-05-31 |
WO2010023380A3 (en) | 2010-04-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |