EP0396622A1 - High heeled shoe design. - Google Patents
High heeled shoe design.Info
- Publication number
- EP0396622A1 EP0396622A1 EP89902140A EP89902140A EP0396622A1 EP 0396622 A1 EP0396622 A1 EP 0396622A1 EP 89902140 A EP89902140 A EP 89902140A EP 89902140 A EP89902140 A EP 89902140A EP 0396622 A1 EP0396622 A1 EP 0396622A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- degrees
- approximately
- angle
- high heeled
- heel
- 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
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B21/00—Heels; Top-pieces or top-lifts
- A43B21/24—Heels; Top-pieces or top-lifts characterised by the constructive form
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
Definitions
- This invention relates to a new and improved design for high heeled pump or fashion shoes.
- the invention is particularly, though not exclusively, applicable to such shoes having heels in the height of at least one and three-quarter inches preferably in the range of one and three-quarters to two inches or more.
- Patent 2,465,817 in which, in the toe portion of the shoe, a concave depression 22 is arranged to receive the ball portion of the wearer's foot and a convex mound portion 24 is provided forward of that concave portion whereby the weight of the wearer is supported mainly, if not entirely, by the ball portion of the foot and by the heel of the foot with the wearer's weight mainly on the ball portion of the foot.
- Such an arrangement is said to permit very high heels, as high as four inches, without discomfort to the wearer as the ball portion of the foot is received n the concave depression of the shoe thereby preventing the foot from sliding forward in the shoe.
- the heel seat proposed in the construction disclosed is at a very substan ial angle to the ground plane, that angle being of the order of 45 degrees.
- very little of the wearer's weight will actually be supported by the heel seat with the wearer's weight, as stated above, being carried mainly on the ball portion of the foot.
- this design wi ll result in substantial discomfort and a reduction in foot flexibi lity.
- Other examDles of prior art wi ll be found in U.S.
- a comfortable high-heeled pump or fashion shoe capable of beirig used for extended periods without discomfort.
- a high heeled shoe defining ground plane and having a heel seat disposed at an angle of from approximately 0 degrees relative to said ground plane to an inclination upwardly and rearwardly of approximately 3 degrees relative to said ground plane.
- Figure 1 is a diagrammatic cross sectional view of a high heeled shoe according to the present invention.
- Figure 2 is a diagrammatic representation showing a comparison of relevant angles to the ground plane of a shoe according to the present invention such as that shown in Figure 1 and current high heeled shoes having similar heel heights.
- FIG. 1 With reference to Figure 1 there is shown in ghost the bone structure of a foot.
- This structure comprises the tarsus 1, the metatarsus 2 and the phalanges 3.
- the tarsus 1 is supported by the heel seat 4 whi le the metatarsus extends over the shank 5 to the ball of the foot 6 where the metatarsus joins the base of the phalanges 3.
- the ball of the foot underlying the heads of the metatarsals, forming the metatarsus, and the phalanges are supported by the toe region 7 of the shoe.
- the shoe illustrated in Figure 1 has a heel height of from approximately one and three-quarter inches to approximately two inches or more.
- the particular shoe i llustrated is based on a U.S. standard ladies' shoe size 7.
- the shoe is shown on a ground plane 8 from which the heel height to the heel seat 4 is measured.
- the heel seat 4 may be parallel with the ground plane or nclined uDwardly and rearwardly of the shoe at an angle of UD to approxi ately 3 degrees relative to the ground plane and is preferably at an upward and rearward inclination of approxi ately 2 degrees. This angle is referenced X in Figures 1 and 2.
- the metatarsus is angled downwardly and forwardly of the shoe from the heel seat with the first metatarsal at an angle of approximately 30 degrees plus/minus 3 degrees relative to the ground plane, preferably at an angle of approximately 30 degrees plus/minus 1 1/2 degrees and more preferably at an angle of approxi ately 30 degrees.
- This angle is reference Y in Figures 1 and 2.
- the great toe is inclined upwardly and forwardly by the upward and forward inclination of the toe region at an angle of approximately 5 1/2 degrees plus/minus 1 degree relative to the ground plane.
- This angle is reference Z in Figures 1 and 2.
- the line in ghost i llustrates the heel seat 4 angle X, the inclination Y of the first metatarsal 2 and the great toe spring Z in the toe region 7 relative to the ground plane 8.
- Dimension U represents the heel height.
- the solid line in Figure 2 represent the corresponding set of angles and inclination for currently avai lable high heeled shoes having similar heel heights to that proposed for the present invention.
- the foot is capable of functioning in two separate mechanical fashions so as to support the body above. Primarily, the foot functions as a beam and supports the body by bending strain. This mechanism of supoort is effective when the force in acting on the arch (arch flattening force) is relatively low. This occurs at such times in the step when the center of body weight falls posterior (behind) the ankle joint. As the center of weight passes ahead of the ankle joint, as occurs in a normal step forward, the forces present begin to cause arch flattening.
- the foot is capable of initiating a basic change in the mechanism of support to a truss form of support and is then capable of supporting via compression strain. Since the bones of the foot have been shown to be extremely strong in terms of compression strength, the greater the compression strain, the better the arch support abi lity. In order for the foot to achieve this change in support mechanism, the metatarsals must be buttressed by the bending of the toes. This buttress effect prevents the metatarsals from sliding forward and thus permits the switch from bending to compression supoort.
- Increasing the angle of bending (extension) of the toes in the shoes can be accomplished in one of two ways, the tip of the shoes may be lifted upwards creating a "genie" type shoe. Although this would be effective, it would not be particularly stylish.
- a more effective mechanism entails increasing the angle at which the metatarsals themselves approach the sole of the shoe. This has the effect of increasing the bending of the toes without creating a "genie" type shoe. This increase in the angle of the metatarsals relative to the ground plane is accomplished by the change in the rear construction of the shoe (specifically the angle of the heal seat 4).
- the heel seat is maintained essentially level (up to 3 ⁇ with respect to the ground irrespective of the heel height.
- the present invention creates a shoe with the relationship of the heel of the shoe parallel to the support surface.
- the metatarsal angle (corresponding to the shank of the shoe ) increases porporti ona I ly to the heel height, e.g. the higher the heel, the greater the metatarsal angle to the floor.
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
Une chaussure à talon haut possède une partie (4) sur laquelle s'appuie le talon, d'une hauteur d'environ 1, 75 pouce et inclinée vers le haut et vers l'arrière à 1,5 degré plus/moins 1,5, une région (7) de support de la pointe du pied, inclinée vers le haut et vers l'avant à 5,5 degrés plus/moins 1 degré et un cambrillon (5) qui fait l'union entre la partie (4) de support du talon et la partie (7) de support de la pointe, permettant ainsi une déclinaison du premier métatarsien de l'utilisateur de 30 degrés pour créer un effet d'arc-boutement des métatarses vers les phalanges de manière à éviter de coincer et serrer la pointe du pied.A shoe with a high heel has a part (4) on which the heel rests, a height of about 1.75 inches and inclined up and back at 1.5 degrees plus / minus 1, 5, a region (7) of support of the tip of the foot, inclined upward and forward at 5.5 degrees plus / minus 1 degree and a cambrillon (5) which makes the union between the part (4 ) of the heel support and the part (7) of the toe support, thus allowing a variation of the first metatarsal of the user by 30 degrees to create an effect of bracing of the metatarsals towards the phalanges so as to avoid wedge and tighten the tip of the foot.
Description
HIGH HEELED SHOE DESIGN
This invention relates to a new and improved design for high heeled pump or fashion shoes. The invention is particularly, though not exclusively, applicable to such shoes having heels in the height of at least one and three-quarter inches preferably in the range of one and three-quarters to two inches or more.
Prior art high heeled shoes in current use have a reputation of being extremely uncomfortable and there is survey information indicating that as many as 20% of the users of such shoes experience foot pain related to the shoes immediately and the majority of users experience such pain after as little as four hours of use. This discomfort results from the wearer's foot sliding forwards in the shoe with the consequence that the wearer's toes are jammed in the toe portion of the shoe. One attempt at reducing the discomfort resulting from the wearing of high heeled shoes is found in U.S. Patent 2,465,817 in which, in the toe portion of the shoe, a concave depression 22 is arranged to receive the ball portion of the wearer's foot and a convex mound portion 24 is provided forward of that concave portion whereby the weight of the wearer is supported mainly, if not entirely, by the ball portion of the foot and by the heel of the foot with the wearer's weight mainly on the ball portion of the foot. Such an arrangement is said to permit very high heels, as high as four inches, without discomfort to the wearer as the ball portion of the foot is received n the concave depression of the shoe thereby preventing the foot from sliding forward in the shoe. As will be seen from this patent, the heel seat proposed in the construction disclosed is at a very substan ial angle to the ground plane, that angle being of the order of 45 degrees. As a consequence, very
little of the wearer's weight will actually be supported by the heel seat with the wearer's weight, as stated above, being carried mainly on the ball portion of the foot. This results in excessive weight being borne by the metatarsal with the likelihood that there wi ll be excessive pressure on the head of the metatarsal resulting in metarta rsa lagia . In any event this design wi ll result in substantial discomfort and a reduction in foot flexibi lity. Other examDles of prior art wi ll be found in U.S.
Patents 1,693,398, 2,254,353, 2,370,789, 2,641,066,
2,852,865, 4,631,841 and RE 18,237.
It is an object of the present invention to provide a comfortable high-heeled pump or fashion shoe capable of beirig used for extended periods without discomfort. According to the invention there is provided a high heeled shoe defining ground plane and having a heel seat disposed at an angle of from approximately 0 degrees relative to said ground plane to an inclination upwardly and rearwardly of approximately 3 degrees relative to said ground plane.
The invention wi ll now be described, by way of examDle, with reference to the accompanying drawings, in wh i ch : Figure 1 is a diagrammatic cross sectional view of a high heeled shoe according to the present invention; and
Figure 2 is a diagrammatic representation showing a comparison of relevant angles to the ground plane of a shoe according to the present invention such as that shown in Figure 1 and current high heeled shoes having similar heel heights.
With reference to Figure 1 there is shown in ghost the bone structure of a foot. This structure comprises the tarsus 1, the metatarsus 2 and the phalanges 3. The
tarsus 1 is supported by the heel seat 4 whi le the metatarsus extends over the shank 5 to the ball of the foot 6 where the metatarsus joins the base of the phalanges 3. The ball of the foot underlying the heads of the metatarsals, forming the metatarsus, and the phalanges are supported by the toe region 7 of the shoe.
The shoe illustrated in Figure 1 has a heel height of from approximately one and three-quarter inches to approximately two inches or more. The particular shoe i llustrated is based on a U.S. standard ladies' shoe size 7. The shoe is shown on a ground plane 8 from which the heel height to the heel seat 4 is measured. The heel seat 4 may be parallel with the ground plane or nclined uDwardly and rearwardly of the shoe at an angle of UD to approxi ately 3 degrees relative to the ground plane and is preferably at an upward and rearward inclination of approxi ately 2 degrees. This angle is referenced X in Figures 1 and 2. The metatarsus is angled downwardly and forwardly of the shoe from the heel seat with the first metatarsal at an angle of approximately 30 degrees plus/minus 3 degrees relative to the ground plane, preferably at an angle of approximately 30 degrees plus/minus 1 1/2 degrees and more preferably at an angle of approxi ately 30 degrees. This angle is reference Y in Figures 1 and 2. In the toe region of the shoe the great toe is inclined upwardly and forwardly by the upward and forward inclination of the toe region at an angle of approximately 5 1/2 degrees plus/minus 1 degree relative to the ground plane. This angle is reference Z in Figures 1 and 2.
In Figure 2 the line in ghost i llustrates the heel seat 4 angle X, the inclination Y of the first metatarsal 2 and the great toe spring Z in the toe region 7 relative to the ground plane 8. Dimension U
represents the heel height. The solid line in Figure 2 represent the corresponding set of angles and inclination for currently avai lable high heeled shoes having similar heel heights to that proposed for the present invention. In these current shoes the inclination of the heel seat is uDward and backwards towards the rear of the shoe at an angle L of aDproximately 8 degrees, the inclination of the first metatarsal downwardly and forward is at an angle M of less than 27 degrees and the great toe is inclined upwardly and forwardly at an angle N of approximately 1 1/2 degrees. These angles L, M and N are also relative to the ground plane 8 and relate to a shoe of simi lar size, namely U.S. standard ladies' size 7.
The ranges of angles specified above in the present inventive shoe result in an included angle between the toe support region 7 of the shoe and the center line of the first metatarsal of from aDprox mately 140 1/2 degrees to approximately 148 1/2 degrees.
It is believed that a brief explanation of the mechanics of the foot is appropriate to faci litate an understanding of the function of the shoe of the present invention. The foot is capable of functioning in two separate mechanical fashions so as to support the body above. Primarily, the foot functions as a beam and supports the body by bending strain. This mechanism of supoort is effective when the force in acting on the arch (arch flattening force) is relatively low. This occurs at such times in the step when the center of body weight falls posterior (behind) the ankle joint. As the center of weight passes ahead of the ankle joint, as occurs in a normal step forward, the forces present begin to cause arch flattening. To counter this, the foot is capable of initiating a basic change in the mechanism of support to a truss form of support and is
then capable of supporting via compression strain. Since the bones of the foot have been shown to be extremely strong in terms of compression strength, the greater the compression strain, the better the arch support abi lity. In order for the foot to achieve this change in support mechanism, the metatarsals must be buttressed by the bending of the toes. This buttress effect prevents the metatarsals from sliding forward and thus permits the switch from bending to compression supoort.
It s this effect which is taken advantage in the shoe design of the present invention. By creating a particular platform surface for the foot, a buttress effect is initiated in a more effective fashion oreventing the forward sliding of the metatarsal bones and, as a result, eliminating the subsequent jamming of the toes into the pointed front of the shoes.
Increasing the angle of bending (extension) of the toes in the shoes can be accomplished in one of two ways, the tip of the shoes may be lifted upwards creating a "genie" type shoe. Although this would be effective, it would not be particularly stylish. A more effective mechanism entails increasing the angle at which the metatarsals themselves approach the sole of the shoe. This has the effect of increasing the bending of the toes without creating a "genie" type shoe. This increase in the angle of the metatarsals relative to the ground plane is accomplished by the change in the rear construction of the shoe (specifically the angle of the heal seat 4). Since the foot is jointed in a variety of locations, the plane that the heel bone (calcaneous) takes with the ground wi ll be compensated for by the pitch of the metatarsals as they approach the ball of the foot. This angular relationship is inversely proport onal. The closer the calcaneous comes to
parallel with the ground (provided there is adequate heel height present), the closer the metatarsals approach a perpend cular attitude. Thus by providing a heel seat with a low slope to increase the descent angle of the metatarsal, the desired buttressing effect is achi eved.
In the present invention, which is directed to shoes having a heel height above about 1 3/4 inches, the heel seat is maintained essentially level (up to 3 ^ with respect to the ground irrespective of the heel height.
In all previous shoe designs, the higher the heel of the shoe, the greater the inclination toward the ground. This inclination angle increase created an inclined platform of the foot toward the floor. This increased angle forced the foot to slide forward and be pinched in the toe portion of the shoes. The present invention creates a shoe with the relationship of the heel of the shoe parallel to the support surface. The metatarsal angle (corresponding to the shank of the shoe) increases porporti ona I ly to the heel height, e.g. the higher the heel, the greater the metatarsal angle to the floor. In a shoe with a heel height over 1 3/4 inches, the advantage is not of increased metatarsal inclination, but rather the resulting b o echani ca I change in metatarsal inclination due to the maintenance of heel parallel with the support surface.
This effect is emphasized when the toe region is angled as specified above in order to increase the spring angle of the toes. As a consequence of this particular design, the load distribution between the foot and the shoe is effected whereby when the wearer is at rest a greater proportion of the weight of the wearer is borne by the heel seat rather than being transferred by the sloping surface of the prior art shoes to the ball of the foot with consequent problems as referred to
above. By the design of the present invention, toe jamming is prevented and comfort assured.
While the description above has been made with respect to a U.S. standard ladies' shoe size 7, the invention is applicable to the whole usual range of U.S. standard ladies' shoe sizes and particularly to those in the range from size 5 to size 10. With different shoe sizes the metatarsal inclination wi ll vary within the range specified with this inclination being close to 33 degrees for a shoe size 5 and nearer to 27 degrees with a shoe size 10. The range of angles for the heel seat and the toe suoport region given with respect to a size 7 shoe are applicable to shoes in the sizes ranging from 5 to 10.
Claims
1. A high heeled shoe defining a ground plane and having a heel seat which is about 1 3/4 inches or more in height above the ground plane, said heal seat being disposed at an angle of from approximately 0 degrees relative to said ground plane to an inclination upwardly and rearwardly of approximately 3 degrees relative to said ground plane.
2. A high heeled shoe according to claim 1 having a shank extending forwardly and downwardly from said heel seat to a toe support region extending forward of the shank, the downward extension of the shank permitting the first metatarsal of a person wearing the shoe to be inclined downwardly and forwardly at an angle of from approxi ately 27 degrees to approximately 33 degrees relative to the ground plane.
3. A high heeled shoe according to claim 2 wherein the toe support region is inclined upwardly and forwardly at an angle of from approximately 4 1/2 degrees to approximately 6 1/2 degrees whereby the included angle between said first metatarsal and the toe support region is from aporoximate ly 140 1/2 degrees to aoo roxi mate ly 148 1/2 degrees.
4. A high heeled shoe according to claim 3 wherein the heel height is from approxi ately 1 3/4 inches to approximately 2 inches.
5. A high heeled shoe according to claim 4 wherein the heel seat is inclined upwardly and rearwardly an an angle of approximately 2 degrees relative to the ground plane.
6. A high heeled shoe according to claim 5 wherein said first metatarsal is inclined downwardly and forwardly at an angle of approximately 30 degrees relative to the ground plane and the toe support region is inclined upwardly and forwardly at an angle of aporoximately 5 1/2 degrees relative to the ground plane.
7. A high heeled shoe having a heel of approxi ately 1 3/4 inches high and greater, a heel seat topping said heel, a shank extending forwardly from the heel seat to a toe support region, the heel seat being at an angle to cause the first metatarsal of a person wearing the shoe to extend downwardly and forwardly at a declination sufficient for the metatarsus of that person to be buttressed by the phalanges of that person to prevent forward sliding of the foot of that person relative to the shoe.
8. A high heeled shoe according to claim 7 wherein the toe support region has an inclination upwardly and forwardly to augment the amount by which the metatarsus s buttressed by the phalanges.
9. A high heeled shoe according to claim 7 wherein said angle of the heel seat is an upward rearward inclination of approximately 1 1/2 degrees plus/minus
1 1/2 degrees .
10. A high heeled shoe according to claim 9 wherein declination is approximately 30 degrees plus/minus 3 deg rees .
11. A high heeled shoe according to claim 8 wherein said inclination is approximately 5 1/2 degrees plus/minus 1 degree.
12. A high heeled shoe according to claim 11 wherein said angle of the heel seat is an upward rearward inclination of approximately 1 1/2 degrees plus/minus 1 1/2 degrees and wherein declination is approximately 30 degrees plus/minus 3 degrees.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14633888A | 1988-01-21 | 1988-01-21 | |
| US146338 | 1988-01-21 | ||
| PCT/US1989/000222 WO1989006502A1 (en) | 1988-01-21 | 1989-01-20 | High heeled shoe design |
| CA000589946A CA1340728C (en) | 1988-01-21 | 1989-02-02 | High heeled shoe design |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0396622A1 true EP0396622A1 (en) | 1990-11-14 |
| EP0396622A4 EP0396622A4 (en) | 1991-10-30 |
| EP0396622B1 EP0396622B1 (en) | 1994-11-02 |
Family
ID=33565663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89902140A Expired - Lifetime EP0396622B1 (en) | 1988-01-21 | 1989-01-20 | High heeled shoe design |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0396622B1 (en) |
| JP (1) | JPH03502415A (en) |
| CA (1) | CA1340728C (en) |
| DE (1) | DE68919212T2 (en) |
| WO (1) | WO1989006502A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU732593B2 (en) * | 1996-10-02 | 2001-04-26 | Hbn Shoe, Llc | Shoe and method of making same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0044086A1 (en) * | 1980-07-15 | 1982-01-20 | Israel Melcer | Sole of rigid material, especially wood, and shoes and boots equipped therewith |
| DE3201446A1 (en) * | 1981-01-27 | 1982-08-19 | Karl Heinz Kapstadt Zeppel | Shoe with rigid moulded sole |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA674597A (en) * | 1963-11-19 | Fortier Gaston | Shoemaker's lasts | |
| US2309775A (en) * | 1942-07-24 | 1943-02-02 | Nathan V Levitt | Shoe last |
| US2394780A (en) * | 1943-06-30 | 1946-02-12 | Iredale John Arnold | Manufacture of graded shoe lasts |
| US2931110A (en) * | 1957-02-26 | 1960-04-05 | Pietrocola Roberto | Sole and heel unit for shoes and the like |
| US4196485A (en) * | 1976-07-14 | 1980-04-08 | Wilkinson Horace A | Joint and method of joining |
| ES489711A0 (en) * | 1980-03-18 | 1982-06-16 | PROCEDURE FOR THE STANDARD MANUFACTURE OF FOOTWEAR | |
| CA1145541A (en) * | 1980-01-29 | 1983-05-03 | Horace A. Wilkinson | Shoe construction |
| ES267684Y (en) * | 1982-10-07 | 1984-02-01 | PERFECTED LAST WITH REPLACABLE POINTER. | |
| US4670996A (en) * | 1986-07-28 | 1987-06-09 | Dill Mary J | Women's shoes with flexible spring steel shanks for use with replaceable heels of different height |
-
1989
- 1989-01-20 JP JP1501992A patent/JPH03502415A/en active Pending
- 1989-01-20 DE DE68919212T patent/DE68919212T2/en not_active Expired - Fee Related
- 1989-01-20 EP EP89902140A patent/EP0396622B1/en not_active Expired - Lifetime
- 1989-01-20 WO PCT/US1989/000222 patent/WO1989006502A1/en active IP Right Grant
- 1989-02-02 CA CA000589946A patent/CA1340728C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0044086A1 (en) * | 1980-07-15 | 1982-01-20 | Israel Melcer | Sole of rigid material, especially wood, and shoes and boots equipped therewith |
| DE3201446A1 (en) * | 1981-01-27 | 1982-08-19 | Karl Heinz Kapstadt Zeppel | Shoe with rigid moulded sole |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO8906502A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03502415A (en) | 1991-06-06 |
| WO1989006502A1 (en) | 1989-07-27 |
| DE68919212T2 (en) | 1995-05-24 |
| EP0396622A4 (en) | 1991-10-30 |
| EP0396622B1 (en) | 1994-11-02 |
| CA1340728C (en) | 1999-09-07 |
| DE68919212D1 (en) | 1994-12-08 |
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