Title of the Invention

Shoe

Field of the Invention

Engineering relating to shoe

Background of the Invention

Shoes having replaceable heels have been disclosed before. However, for such shoes, there remains an issue in adjusting the form of shoe sole to be consistent with the changed height of the replaced heel. In the prior works, flexible soles were selectively used so that their physical forms can be changed. Nevertheless, this approach relies on the weight provided on the soles or, in other words, the weight of the person W'earing the shoes for changing the physical form of shoe sole. This causes inconsistencies due to the varied forces affecting shoe sole and also the instability when wearing the shoes. Such shoes are therefore primarily considered as secondary shoes and are used when necessary such as during a trip. Most of the persons who use such shoes may also not be sufficiently confident for using the shoes for formal events or have a concern when there is a need for a fast movement or a move in a inconvenient or unstable area. Therefore, there is a need to invent and develop a shoe having replaceable heels that is sufficiently stable and safe thereby comforting users when changing the heel height.

Summary of the Invention

One of the objectives of this invention is to solve the aforementioned issue and create a stability for wearing shoes and enhancing the confidence o f the users. A shoe disclosed herein comprising shoe sole (101) which provides a support to a foot shoe heel (103) connected to a part of shoe shole in a removable manner characterized in that such shoe sole further comprises three rotation axes arranged across the width of shoe sole and dividing an area of shoe sole into four different subareas comprising the first subarea (201) between the end of the shoe (201) and the first axis (301) which is positioned next to the end of the shoe, the second subarea (203) between the first axis (301) and the second axis (303) which is positioned next to the first axis, the third subarea (205) between the second axis (303) and the third axis (305) which is positioned next to the second axis, the forth subarea (207) which is positioned next to the third axis toward the tip of the shoe and wherein the shoe sole further comprises the first gear (401) and the second gear (403) connected to each other in the first subarea and supporting means (405) connected to at least a part of the second gear and positioned in the second subarea which allows driving force from the first gear to pass through the second gear and farther to the said supporting means and wherein a part of the heel connecting to shoe sole comprises at least one extrusion (501) at the predefined position which is configured to be inserted in the predefined cavity of the shoe sole and connected to the first gear installed on the shoe sole and twisted for a predefined distance toward to the predefined location thereby driving and moving all the corresponding components.

In one aspect, the shoe can comprise a pressing gear (407) connected between the second gear (407) and the supporting means (405).

In the other aspect, the pressing gear (407) further comprises the second pressing gear (409).

In the other aspect, the supporting means (405) further comprises the third gear (411) and the fourth gear (413) which are partially connected, and one end of the pressing gear (407) is connected to the third gear (411) thereby rotating the third gear and the fourth gear in the same direction.

In the other aspect, the degrees of the rotation of the second and the third axes are varied based on the degree of rota tion of the first axis according to the following equ ations .

Y(A) = 8X +1 Y(B) = 14X +2

Y(C) = 4X +12 when X is the height of a heel and Y is the degree of the slope between the subarea and the horizontal plane in which

Y(A) is the d egree of the slope between the first subarea and the horizontal pl ane.

Y(B) is the degree of the slope between the second subarea and the horizontal plane.

Y(C) is the degree of the slope between the third subarea and the horizontal plane.

In the other aspect, the insertion of a heel into a shoe sole comprises a subsequent twist based on the predefined criteria comprising a predefined distance and position and the predefined degree of free rotation.

In the other aspect, the extrusion comprises the locking extrusion (503) at the predefined position and a shoe sole comprises the stopper (505) which defines the distances which end the rotation for different heel heights and is installed inside the cavity of the sole shoe at the predefined position corresponding to the rotation relating to the locking extrusion.

In the other aspect, the stoppers are arranged in the positions to end the rotation at the different degree of rota tion for each heel height and the difference is 0.7 degree apart for each level having the initial height of one inch and the highest height of four inches.

Tn the other aspect, the relationship between the height of heel and the degree of rotation in relation to the twist of the heel is the relationship according to the equation

Y = 0.7X-1E-15 when X is the height of heel and y is the degree of rotation in relation to the twist of heel and the relationship between the degree of free rotation and the degree of rotation for driving the first gear is the relationship according to the equation y = 20x+2 for the first subarea y = 11.429x +1 for the second subarea y = 5.7143x+12 for the third subarea when x is the degree of the twist and y is the degree of the slope of subarea when compared to the horizontal plane. hr the other aspect, the degree of free rotation is 0-89.3 degrees and the degree of rotation for driving the first gear is between 89.3-90 degrees for the heel having the height of one inch or 0- 88.6 degrees and the degree of rotation for driving the first gear is between 88.6-90 degrees for the heel having the height of two inches or 0-87.9 degrees and the degree of rotation for driving the first gear is between 87.9-90 degrees for the heel having the height of three inches or 0-87.2 degrees and the degree of rotation for driving the first gear is between 87.2—90 degrees for the heel having the height of four inches.

Brief Descriptions of the Drawings

Figure 1 show's the side view of the shoe according to this invention and the axes of the said shoe.

Figure 2 shows gear locking: mechanisms according to this invention.

Figure 3 shows gear locking mechanisms for a shoe heel according to this invention.

Figure 4 shows a shoe heel according to this invention.

Detailed Descriptions of the Preferred Embodiments

The descriptions in more detail of this invention will be pro vided by way of example with the referenced drawings in order to make the descriptions clearer. Parts that are the same in these drawings will be identified by the same referenced number. The said descriptions in more detail, however; are provided without any limitation to the scope of the invention. In this regard, this invention can be implemented or applied in various manners. This disclosure will present the different examples as references for implementations or applications having the same characteristics. Nevertheless, as mentioned above, these are provided without any limitation to the scope of the invention.

A shoe disclosed herein comprising shoe sole (101) which provides a support to a foot shoe heel (103) connected to a part of shoe shole in a removable manner characterized in that such shoe sole further comprises three rotation axes arranged across the width of shoe sole and di viding an area of shoe sole into four different subareas comprising the first subarea (201) between the end of the shoe (201) and the first axis (301) which is positioned next to the end of the shoe, the second subarea (203) between the first axis (301) and the second axis (303) which is positioned next to the first axis, the third subarea (205) between the second axis (303) and the third axis (305) which is positioned next to the second axis, the forth subarea (207) which is positioned next to the third axis toward the tip of the shoe and wherein the shoe sole further comprises the first gear (401 ) and the second gear (403) connected to each other in the first subarea and supporting means (405) connected to at least a part of the second gear and positioned in the second subarea which allows driving force from the first gear to pass through the second gear and further to the said supporting means and wherein apart of the heel connecting to shoe sole comprises at least one extrusion (501 ) at the predefined position which is configured to be inserted in the predefined cavity of the shoe sole and connected to the first gear installed on the shoe sole and twisted for a predefined distance toward to the predefined location thereby driving and moving all the corresponding components.

As shown in Figure 1 , as the first axis (301), the second axis (303) and the third axis (305) are arranged in order from the end of shoe sole toward to tip of the shoe respecti vely, these, after installed, divide an area of shoe sole into subareas. There is a lock between the second axis (203) and the third axis (205) which locks the third axis and holds the second subarea (203) and the third subarea (205) at the predefined level. In the possible embodiments, such lock can comprise a gear and the gear supporting means which supports the gear teeth thereby locking the position of the gear. Also, in the possible embodiment, the number of gear supporting means is not less than three. When moving gear to the different corresponding positions of the gear supporting means, this will also create at least three different patterns of the connected planes between the second subarea and the third subarea. Additionally, in a possible embodiment, the supporting means is configured in the form of an additional set of connected gear.

In the actual use, a user can select the desired heel height and the degree of rotation of each axis will correspond to the said selected height. For ease of use, written description can be provided on the lock in order to indicate the levels that can be selected. As an example, there can be four different levels of height namely one inch, two inches, three inches, and four inches.

In any case, the degrees of rotation of the second and third axes are varied according to the degree of rotation of the first axis and the relationship is shown in the following equation.

Y (B) - {[ 14Y(A)- 14]/8 } +2 and Y(C) == {[4Y(B>8]/14} +12 where in Y(A) is the degree of rotation of the third axis when compared to the horizontal plane, Y(B) is the degree of rotation for the second axis when compared to the horizontal axis and Y(C) is the degree of rotation for the first axis when compared to horizontal plane. During the usage, the heights of the heels should be clearly specified and the said heights direct tire degree of rotation of the three axes according to the equation X = [Y(A)-1 ]/8 = Y (B)-2]/14 - [Y(C)~ 12J/4 and X in this regard is the heel height measured from the base to the heel top.

With regard to the replaceable heel ( 103), one of the possible embodiments includes the arrangement of shoe sole to include attaching means extruded underneath and the shoe heel may also include the corresponding attaching means in order to further secure the connection between the shoe heel and shoe sole. Such arrangements can be implemented in various manners. Among which, the additional cavity can be provided so that the connected attaching means can be additional twisted wdthin the said cavity to the predefined location thereby locking the components together and securing the connection. In the other implementations, additional extrusions and the corresponding cavity can be used. These include the use of a small circular extrusion on the heel and the corresponding cavity on the surface of the sole in order to further secure the connection.

Figure 2 shows the gear locking mechanism according to this invention. In this example, the locking system using gears installed to the shoe sole is demonstrated. The said system comprises multiple components. In this regard, the main components are the first gear (401) and the second gear (403) which are connected together. The rotation of the first gear (401) will drive the second gear (403). The first gear (40) is dri ven by the installation of the shoe heel to the shoe sole through the insertion and twisting of the heel to the defined location which is connected to the mechanism for rotating the first gear.

For the twist, certain degree for free rotation can be specified. When the heel is inserted to the shoe sole, the heel can be twisted until the end of the specified degree for free rotation. Thereafter, the twist will drive the first gear and cause the same to rotate. The degree of the said twist will correspond to the predefined degree of rotation of the gear and the shoe sole will comprise the stopper which stop the rotation of the first gear at the different positions for each heel height.

In the possible embodiment, the connecting means of the shoe heel (501) comprises the first locking extrusion (502) and the cavity of the shoe sole provided for the insertion of the heel comprises the main cavity (701) and the secondary cavity (702). The secondary cavity is used for limiting the movement of the first locking extrusion after the twist in which the distance limiting the twist corresponds to the degree of free rotation specified for each heel height.

Additionally, the first gear may comprise the second locking extrusion (503). The said second locking extrusion is installed on the outer rim of the first gear at the predefined location . The said second locking extrusion will stop the movement in the position relative to the wall (505).

Driving the first gear will also drive the second gear as explained above. For the possible embodiments, the second gear will be connected to the pressing gears. In the suggested manner, the two pressing gears will be connected on each opposi te side of the second gear. One of the pressing gear's will be connected to the third gear (411) which is installed on the second subarea.

When there is a force transmission to the third gear which is installed on the second subarea, the planes between each subarea of the shoe sole will be adjusted to the predefined position and level.

In the possible embodiments, the third gear (411) is arranged to connect with the fourth gear (413) and transmit the driving force to the fourth gear (413) so that the direction of rotation will be the same.

In the event that the difference of height between the available heels is 1 inch, the degree of free rotation of the connecting means of the shoe heel and the degree of rotation of the first gear are defined as follows:

0-89.3 degrees and the degree of rotation for driving the first gear is between 89.3-90 degrees for the heel having the height o f one inch.

0-88.6 degrees and the degree of rotation fordriving the first gear is between 88.6-90 degrees for the heel having the heigh t of two inches.

0-87.9 degrees and the degree of rotation for driving the first gear is between 87.9-90 degrees for the heel having the height of three inches.

0-87.2 degrees and the degree of rotation for driving the first gear is between 87.2-90 degrees for the heel having the height of four inches.

Although this invention is described in detail using the drawings as examples, it will be understood that this invention are intended to cover any modification or solutions provided by the persons skilled in the arts. The scope of this invention is based on the claims and also cover any characteristics of the invention that may not be specifically covered in the claims, but still cause the same effects as those of this invention. Best Mode of the Invention

As disclosed in the Disclosure of the Invention.