CA2167047C

CA2167047C - Footwear system

Info

Publication number: CA2167047C
Application number: CA002167047A
Authority: CA
Inventors: James G. Mclelland; Victor J. Gallenstein; Leon E. Kelley; Douglas H. Richie
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-07-23
Filing date: 1994-05-09
Publication date: 2004-03-30
Anticipated expiration: 2014-05-09
Also published as: BR9407094A; WO1995002974A1; ES2108470T3; EP0710078A1; DE69405759T2; AU7137594A; DE69405759D1; EP0710078B1; JPH09501079A; CA2167047A1

Abstract

A footwear system for providing enhanced protection and comfort to the foot of a wearer by reducing impact and shearing forces normally received by the foot. The footwear system has a knit sock and a shoe. The knit sock overlies and contacts the shoe and includes a ball portion, a heel portion, and an arch portion disposed between the ball and heel portions.
Each of the ball and heel portions is formed of thicker knit fabric than the arch portion thereby providing a greater amount of protection and cushioning to the ball and heel of the foot of the wearer than to the arch portion. The shoe includes a sole having a ball portion, a heel portion, and a raised arch portion for contacting and interfacing with the respective overlying portions of the sock. The raised arch portion of the sole preferably corresponds substantially to the lengthwise extent of the thinner fabric arch portion of the sock when positioned on the foot of a wearer so as to provide a substantially mating interfacing relationship for added protection and comfort to the wearer thereof.

Description

FOOTWEAR SYSTEM
Field of the Invention This invention relates to footwear and, more particularly, to a footwear system having a sock and a shoe for interfacing with the sock.
Hackaround of the Invention Various shoes have been developed over the years which have attempted to emulate the sole of the foot of the wearer to thereby provide a degree of comfort when walking, running, or the like. These shoes typically anticipated the wearer to use a conventional thin knit sock with the shoe so that the innersole of the shoe substantially corresponds to the sole of the foot. Examples of such shoes may be seen in the French Published Application (FR-A-2661805) by Roger titled "Podologic Orthosis"; U.S. Patent 3,470,880 by Pagliano titled "Foot Shank Pad"; the Swiss Patent (CFi-A-256494) titled "Hygienic Footwear With Supportive Insole"; U.S. Patent 4,831,750 by Miiller titled "Shoe- Construction, Shoe-Construction Product, and Method Of Fabricating The Products"; and U.S. Patent 4,305,212 by Coomer titled "Orthotically Dynamic Footwear."
The common assignee of the present invention, however, recognized that when wearing shoes, the major wear and tear on the foot occurs in the ball and heel regions of the foot because a major portion of the person's weight is distributed in these regions when standing, walking, or running. Therefore, the common AMENDED SHEET

~.~ ~7D47 assignee developed a knit sock having an increased density of knit fabric in the ball and heel portions of the sock to provide added comfort to the wearer and reduce the damage to these regions of the foot. An AMENDED SHEET

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described herein by the provision of more comfortable footwear for a wearer's foot having thicker fabric ball and heel portions of a sock when positioned on the foot of a wearer matingly interfacing with the sole of a shoe so that wear and tear to the ball and heel portions of the foot of the wearer are reduced during use. The thicker fabric portions of a knit sock when positioned on the foot of a wearer, preferably the ball and heel portions thereof, matingly interface in male/female interlocking fashion with the contours of the sole of the shoe so as to provide internal multi-directional movement in the thicker fabric portions interfacing with the foot of the wearer thereby reducing friction shearing forces and without requiring a larger shoe size. The sole of the shoe has a ball portion, a heel portion, and a raised arch portion for contacting and interfacing with the respective overlying portions of the sock. The raised arch portion of the sole of the shoe preferably corresponds substantially to the lengthwise extent of the thinner fabric arch portion of the sock and also matingly interfaces therewith so that the male/female cooperation between the sock and the sole of the shoe is further enhanced.
More particularly, the footwear system has a knit sock and a shoe. The knit sock overlies and contacts the shoe and includes a ball portion, a heel portion, and an arch portion disposed between the ball and heel portions. Each of the ball and heel portions of the sock is formed of thicker knit fabric than the arch portion of the sock. The thicker knit fabric preferably is formed of a predetermined density of raised terry loops thereby providing a greater amount of protection and cushioning to the ball and heel of the foot of the wearer. The shoe has a sole including a ball portion, a heel portion, and a raised arch portion for contacting and interfacing with the ..

respective overlying portions of the sock. The sole of the shoe, according to the invention, preferably includes an innersole and an outersole. The raised arch portion of the innersole preferably corresponds substantially to the lengthwise extent of the thinner fabric arch portion of the sock when positioned on the foot of the wearer so as to provide a substantially mating interfacing relationship for added protection and comfort to the wearer. According to another embodiment of the invention, the arch portions of the knit sock and the innersole of the shoe each have a shorter lengthwise extent than either the ball or heel portion sof the sock or innersole and also matingly interface so that a male/female mating relationship is provided. The matingly interface relationship of the sock with the innersole of the shoe according to the embodiments of the invention thereby provides a male/female cooperation type of approach to foot protection which protects against the shearing and impact forces normally received by the foot during activity thereof.
Also, the innersole of the shoe is preferably a multiple layer innersole having a ball portion, a heel portion, and a raised arch portion therebetween.
The-raised arch portion preferably has a hump, a substantially flat plateau portion adjacent peripheries of the hump, and oppositely inclined fore and aft portions for providing a smooth transition with the ball portion and major areas of the heel portion. The hump extends widthwise from the instep of the innersole to medial portions of the raised arch portion, has a greater thickness along the instep, decreasing thickness toward the medial portions, and substantially the same contour as major portions of the arch of a foot of a wearer. The innersole may be secured to the outersole, or an intermediate layer therebetween, or may also be advantageously used as an insert and ., .y ..
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;....."'.:~,~ ~ ° f~~.~ ~'..7. C's~'ltz ~, view of a shoe of a footwear system according to the present invention with the foot of a wearer in phantom lines;
Figure 10 is a vertical cross-sectional view of a shoe of a footwear system according to the present invention taken along line 10-10 of Figure 7;
Figure 11 is a fragmentary cross-sectional view of a shoe of a footwear system according to the present invention illustrating the raised arch portion of the innersole of the shoe;
Figure 12 is a perspective view of an innersole of a shoe of a footwear system according to a first embodiment of the present invention;
Figure 13 is a perspective view of an innersole of a shoe of a footwear system according to a second embodiment of the present invention with phantom lines illustrating the innersole in a position of partial removal from the shoe;
Figure 14 is a vertical cross-sectional view of an innersole of a shoe of a footwear system according to the present invention taken along line 14-14 of Figure 12;
Figure 15 is a fragmentary vertical cross-sectional view of an innersole of a shoe of a footwear system according to the present invention taken along line 15-15 of Figure 12;
Figure 16 is an exploded perspective view of an innersole of a shoe according to a first embodiment of a footwear system of the present invention;
Figure 17 is an exploded perspective view of an innersole of a shoe according to a second embodiment of a footwear system of the present invention;
Figure 18 is a vertical cross-sectional view of another embodiment of a footwear system according to the present invention;
Figure 19 is a horizontal cross-sectional view of another embodiment of a footwear system ~~6'~~4~
according to the present invention taken along line 19-19 of Figure 18;
Figure 20 is a horizontal cross-sectional view of another embodiment of a footwear system according to the present invention taken along line 20-20 of Figure 18;
Figure 21 is a horizontal cross-sectional view of another embodiment of a footwear system according to the present invention taken along line 21-21 of Figure 18;
Figure 22 is a top plan view of an innersole of another embodiment of a footwear system illustrated in Figure 18; and Figure 23 is a side elevational view of an innersole of another embodiment of a footwear system illustrated in Figures 18 and 22.
Detailed Description Of A Preferred Embodiment The present invention now will be described more fully hereinafter with reference to the accompanying drawings in which illustrated embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those skilled in the art. Like numbers refer to like elements throughout.
The footwear system, according to the present invention, broadly designated at 20, has a knit sock 30 overlying and contacting a shoe 50 as best shown in Figures 7 and 9. Figures 1-3 show the knit sock 30 of the footwear system 20 including a view of the knit sock on the foot of a wearer with phantom lines illustrating the bones of the foot for clarity. The sock 30 is illustrated as an athletic sock. The sock 30, however, can be knit for use as a dress sock or ..h_ .J fib. o~LJi.~.'"~ .t.n ';~~.3!Jt.',....'.>i..i~'r:y~~ ~;'i"~'~
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_g_ ball or heel portions 33, 34 of the sock 30 such as in its relaxed position as illustrated in Figures 1 and 2 or may have a lengthwise extent shorter than the ball portion 33 and approximately equal to the lengthwise extent of the ball portion 34 such as in its stretched position on the foot of a wearer as illustrated in Figure 3.
Also, as illustrated in Figures 1 and 2, the instep portion 32 of the sock 30 preferably has opposite side edges or peripheries forming lengthwise extending, opposing side panels 37, 38 which are knit without raised terry loops. The other opposing side panel 38 is not shown but is preferably a mirror image of the opposing side panel 37 shown in Figures 1 and 2.
The side panels 37, 38 preferably extend lengthwise from the toe portion 36 to the upper cuff 31 and extend widthwise from a lower sole, formed by the ball, heel, and arch portions 33, 34, 35, several Wales (i.e., preferably 4 to 14 Wales) into the instep portion 32.
The shoe 50, as best shown in Figure 4-6, 8, 10-11, and 18, has a shoe upper 51 and a sole shown as an innersole 60 and an outersole 80. The shoe 50 illustrated is a casual walking shoe, but other various shoes, including athletic shoes, dress shoes, and sandal-type shoes, may also be used as will be apparent to those skilled in the art. The innersole 60 of the shoe 50 overlies the outersole 80 and has a ball portion 62, a heel portion 61, and a raised arch portion 63, as best shown by the bracketed portion in Figures 6 and 8, for contacting and interfacing with the respective overlying portions of the knit sock 30.
The ball portion 62 extends lengthwise fore of the raised arch portion 63 and preferably includes the portion underlying the toe portion of an overlying sock or toes of the foot of the wearer thereof. The heel portion 61 extends lengthwise aft of the raised arch portion 63 as illustrated and preferably extends to 21 fi704 7 include the heel portion of an overlying sock or the heel of the foot of a wearer thereof. As illustrated in the embodiment of Figures 1-17 of the present patent application, the raised arch portion 63 of the innersole 60 may have a lengthwise extent that is substantially shorter than the ball portion 61 and approximately equal to or slightly greater than the lengthwise extent of the heel portion 61, as best shown in Figures 7-9, so that the lengthwise extent of the raised arch portion 63 of the innersole 60 corresponds substantially to the lengthwise extent of the thinner fabric arch portion 35 of the knit sock 30 when worn on the foot of a wearer so as to provide a substantially mating interfacing relationship for added protection and comfort to the wearer. According to another embodiment of a footwear system according to the present invention, the raised arch portion 63" of the innersole 60" may also have a substantially shorter lengthwise extent than either the ball portion 62" or the heel portion 61", as best illustrated in Figures 18-23 with double prime (") notation corresponding to like elements of the first embodiment of the invention as described herein. The shorter lengthwise extent of the raised arch portion 63" preferably has a range from about 20% to 28% of the overall lengthwise extent of the innersole 60" for all sizes of a shoe 50". The raised arch portion 63 according to the embodiments of the invention also generally extends across the entire width of the innersole 60.
The matingly interface relationship of the sock 30 with the sole of the shoe 50, as best shown in Figures 7, 9, and 18, thereby provides internal multi-directional movement in the thicker fabric portions of the sock 30 interfacing with the foot of the wearer so as to reduce impact and friction shearing forces received by the foot of the wearer. The matingly interface relationship is preferably a male/female cooperation type of approach that protects the foot during activity thereof such as walking, jogging, and participating in various sports. The footwear system according to the invention also provides a shoe 50 that comfortably receives a sock, such as the knit sock 30, having thicker fabric in the ball and heel portions thereof than in the arch without requiring a larger shoe size for the wearer of the sock.
The innersole 60 of the shoe 50, as best shown in Figures 6, 12-17, and 22-23, is preferably formed of multiple layers including a backing layer 57 and an integrally molded foam layer 70 overlying the backing layer 57. The backing layer 57 (as shown in a first embodiment in Figures 12 and 16) preferably has a substantially uniform thickness throughout and may be integrally formed of a relatively stiff and flexible material, such as compressed paperboard, so as to impart relatively stiff support to the integrally molded foam layer 70. The backing layer 57' (as shown in a second embodiment in Figures 13 and 17) may also be bifurcated into first and second portions 57a', 57b' and secured along common and overlapping edges 57c', 57d'. The first portion 57a' of the backing layer 57' extends substantially the length of the ball portion 62', and the second portion 57b' extends substantially the length of the arch portion 63' and substantially the length of the heel portion 61'. The second portion 57b' is formed of a stiffer material than the first portion 57a' so that the stiffer second portion 57b' reduces lateral and bending movement of the heel and the arch of the wearer of the shoe 50, and yet the first portion 57a' still provides flexible bending in and around the ball and toes of the foot of the wearer.
The material forming the first portion 57a' is preferably formed of compressed paperboard and the material forming the second portion 57b' is preferably formed of a more densely compressed paperboard.

Also in the second embodiment of the innersole 60, the first portion 57a is relatively thinner than the second portion 57b', and the two portions 57a', 57b' have adjoining inclined edges 57c', 57d' which are secured together in the arch portion 63' of the innersole 60' or in an area forming a transition between the ball portion 62' and the arch portion 63'.
The backing layer 57 is illustrated in Figures 16 and 17 as a single layer, but may also comprise composite or multiple layers. As shown, the molded foam layer 70 and the backing layer 57 have substantially the same overall configuration.
An intermediate lower layer 59, preferably formed of a material such as PORON (a polyurethane material) manufactured by Rogers Corporation of Connecticut, having substantially the same overall configuration as the backing layer 57 and the molded foam layer 70 is preferably positioned between the backing layer 57 and the molded foam layer 70 as best illustrated in Figures 16 and 17. The intermediate lower layer 59 provides additional backing as described above in reference to the backing layer 57 and provides additional overall thickness to the molded foam layer 70 of the innersole 60. The intermediate lower layer 59 may be cut and laminated to the compressed paperboard, and the overlying molded foam layer 70 then secured thereon. It will be apparent to those skilled in the art that the molded foam layer 70 may be molded so as to provide a thicker lower portion and a similarly dimensioned upper portion and still generally have the ball portion 72, heel portion 71, and raised arch portion 73 as described above and thereby eliminate the intermediate lower layer 59. Since the intermediate lower layer 59 of the innersole 60 is preferably included in the construction of the innersole 60, an innersole 60" not having the intermediate lower layer 59, i.e., only having the w.r.w i::%kt':,'%C:i.i;:~:3 .~.c~:~'Fw'a=' ..~s~~9r, ~'~?V <'z.~,<vC. ~.":~:
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30. The raised arch portion 73 of the molded foam layer preferably includes a hump 77 extending widthwise from the instep of the innersole 60 to medial portions of the raised arch portion 73. The hump 77 preferably has a greater thickness along the instep, decreasing thickness toward medial portions of the raised arch portion 73 as illustrated, and substantially the same contour as major portions of the arch of the foot of the wearer. The raised arch portion 73 also preferably includes a relatively flat plateau 78 adjacent peripheries of the hump 77. The plateau 78 is raised with respect to the ball portion 72 and major areas of the heel portion 71 of the molded foam layer 70 of the innersole 60 so that corresponding areas of the arch portion 35 of the knit sock on the foot of a wearer matingly interface therewith.
The ball portion 61 and major areas of the heel portion 71 of the molded foam layer 70 of the innersole 60 are relatively thin and of substantially the same thickness. The plateau 78 of the raised arch portion 73 of the molded foam layer 70 is preferably about 0.32 cm (1/8th inch) thicker than either the ball portion 72 or the major areas of the heel portion 71.
Preferably, the ball portion 72 and the major areas of the heel portion 71 of the molded foam layer 70 each have a thickness of about 0.16 cm (1/l6th inch), and the plateau 78 of the arch portion 73 of the molded foam layer 70 has a thickness of at least twice that of either the ball portion 72 or the heel portion 71, such as 0.48 cm (3/16 inch).
Additionally, the molded foam layer 70 of the innersole 60 further preferably has a thickened outer peripheral edge surrounding the major areas of the heel portion 71 and defining a raised heel ridge 76 so as to provide additional support for side heel areas of the wearer thereby providing added comfort to the wearer.
The raised heel ridge 76 of the molded foam layer 70 AMENDED SHEET

preferably terminates at a lower height than the raised arch portion 73 of the molded foam layer 70.
The raised arch portion 73 of the molded foam layer 70 further preferably has a peripheral instep edge defining an upstanding arch ridge 79, as best illustrated in Figure 14, which uninterruptedly joins the raised heel ridge 76. The upstanding arch ridge 79 extends higher than the raised heel ridge 76 for enhancing support of the instep arch portion of the wearer. The raised arch portion 73 of the molded foam layer 70, as best shown in Figures 12-15, preferably extends across the entire width of the innersole 60 from the arch ridge 79 toward the outstep of the innersole 60. It will also be apparent that the raised arch portion 73 of the molded foam layer 70 has a general decreasing thickness in cross-section so as to more closely conform to the incline of the arch portion of the foot having the thinner fabric arch portion 35 of the knit sock 30 positioned thereon.
The raised arch portion 73 of the molded foam layer 70 also has oppositely inclined fore and aft portions 74, 75, of decreasing thickness for providing a smooth transition with the thinner ball portion 72 and the major areas of the heel portion 71. The fore and aft portions 74, 75 of the raised arch portion 73 are preferably substantially parallel in a transverse direction for a more effective mating interfacing relationship with the thinner fabric arch portion 35 and the respective thicker fabric ball and heel portions 33, 34 of the knit sock 30. It will be understood by those skilled in the art that angled variations of the fore and aft portions 74, 75 in a transverse direction may also be used.
Also, the innersole 60 of the present invention may be secured to the outersole 80, or an intermediate layer sole therebetween, or may be used as an insert such as for an orthotic insert for other shoes not having the innersole to provide the mating interfacing relationship with the sock 30. If the innersole 60 is used as an insert, it would preferably have the backing layer configuration as shown in Figures 12 and 16.
In an embodiment of the footwear system wherein the innersole 60 is used as an insert, the shoe 50 preferably would be an extra-depth shoe adaptable for receiving the innersole 60 as well as other types of orthotic inserts when the innersole 60 is removed therefrom. The extra-depth shoe has a sole and a shoe upper 51. The sole as illustrated preferably includes a multilayer innersole 60 and an outersole 80. The extra-depth shoe preferably has an added depth of about 0.64 cm (1/4th inch) more than conventional shoes, and the combined thickness of the multilayer innersole 60 has a thickness of about 0.64 cm (1/4th inch) in the ball portion 72 and major areas of the heel portion 71.
For example, the conventional shoe may have a depth adapted to receive the foot of a wearer of about 5.4 cm (2-1/8th inches) from the upper surface of major areas of the heel portion to slightly below the ankle in the shoe upper, i.e., low-top shoe. An extra-depth shoe, on the other hand, has a depth in this position of about 6.04 cm (2-3/8ths inches) from the upper surface of major areas of the heel portion to slightly below the ankle in the shoe upper. It will be understood by those skilled in the art that the dimensions of this depth of the shoe, according to the present invention, may vary depending on the style of shoe and the thickness of the insert desired. The extra-depth shoe embodiment of the footwear system preferably also substantially conforms to the illustrated drawings, but having the innersole 60 as illustrated being adaptable for ease of insertion and removal from the shoe.
As set forth above, the innersole 60 as an insert would preferably have the backing layer M,~~NDED SHEET

configuration as shown in Figures 12 and 16. The shoe 50 would then preferably have a bifurcated intermediate backing layer 57', as best shown in Figure 17, overlying the outersole 80 on the inside of the shoe 50. The first portion 57a' of the intermediate backing layer 57' extends substantially the length of the ball portion 62', and the second portion 57b' extends substantially the length of the arch portion 63' and substantially the length of the heel portion 61'. The second portion 57b' is formed of a stiffer material than the first portion 57a' so that the stiffer second portion 57b' reduces lateral and bending movement of the heel and the arch of the wearer of the shoe 50, and yet the first portion 57a' still provides flexible bending in and around the ball and toes of the foot of the wearer. The material forming the first portion 57a' is preferably formed of compressed paperboard and the material forming the second portion 57b' is preferably formed of a more densely compressed paperboard. A lining layer 90 substantially the same as the lining layer 90 as described with the innersole 60 overlies the intermediate backing layer 57' to provide ease of removal and insertion of the innersole 60 insert as shown in Figures 12 and 16. It will be understood by those skilled in the art that other types of extra-depth shoes or other shoes as needed can also be adaptable to receive the innersole 60 insert according to the present invention.
The outersole 80 of the shoe 50 according to the embodiments of the present invention, as best shown in Figures 5 and 8, is formed of an integrally molded foam material such as a Vibram° outersole manufactured by Quabaug Corporation of North Brookfield, Massachusetts. The outersole 80 preferably has a roughened outer surface shown in the form of a plurality of ribs 81 for providing increased frictional contact with the ground or surface upon which the ~ .~ 6 '~ ~ 4 '~
wearer walks. The plurality of ribs 81 preferably extend across the entire widthwise extent of the outersole 80 and generally are parallel to each other in a transverse direction. It also will be apparent to those skilled in the art that the outersole 80, although illustrated as a single molded foam layer in Figures 8-9, may comprise various other types or styles, including two composite layers 82" and 83" as illustrated in Figure 18, more than two composite layers, or a fabricated unit outersole which is fabricated and not molded.
In the drawings and specification, there has been disclosed typical preferred embodiments of the invention and, although specific terms are employed, they are used in a generic and descriptive sense only and not for the purposes of limitation. The invention has been described in considerable detail with specific reference to various preferred embodiments. It will be apparent, however, that various modifications and changes can be made within the spirit and scope of the invention as described in the foregoing specification and defined in the appended claims.

Claims

THAT WHICH IS CLAIMED IS:

1. A footwear system (20) for providing enhanced protection and comfort to the foot of a wearer by reducing impact and shearing forces normally received by the foot, said footwear system (20) comprising a knit sock (30) and a shoe (50) receiving the knit sock positioned on the foot of a wearer, said knit sock (30) comprising a ball portion (33), a heel portion (34), and an arch portion (35) disposed between said ball (33) and heel (34) portions, each of said ball (33) and heel (34) portions being formed of thicker knit fabric than said arch portion (35) thereby providing a greater amount of protection and cushioning to ball and heel portions of the foot of a wearer than to an arch portion of the foot, said shoe (50) comprising a sole characterized by:
having a ball portion (62), a heel portion (61), and a raised arch portion (63), upper parts of each of said sole portions (61, 62, 63) being positioned and arranged to receive respective overlying portions of said knit sock (30) and to abuttingly contact the same, the lengthwise extent of upper parts of each portion of said sole corresponding substantially to the lengthwise extent of the respective overlying portions of said knit sock (30) when positioned on the foot of a wearer so as to provide a substantially mating interfacing relationship for added protection and comfort to the wearer.

2. A footwear system (20) according to Claim 1, wherein said sole comprises an innersole (60) and an outersole (80) and wherein said innersole (60) further comprises multiple layers including a backing layer (57) of substantially uniform thickness throughout and a molded foam layer (70) overlying said backing layer (57) and being secured thereto, said molded foam layer (70) and said backing layer (57) having substantially the same overall configuration, and said molded foam layer (70) having a thicker medial portion defining said raised arch portion of said sole.

3. A footwear system (20) according to Claim 2, wherein said multiple layer innersole (60) further comprises a lining layer (90) overlying said molded foam layer (70) and being secured thereto, said lining layer (90) having substantially the same overall configuration as said molded foam layer (70) and said backing layer (57).

4. A footwear system (20) according to Claim 2 or 3, wherein said backing layer (57) is integrally formed of a material being flexible enough to bend and being rigid enough to impart support to the molded foam layer (70).

5. A footwear system (20) according to Claim 2 or 3, wherein said backing layer (57) of said multiple layer innersole (60) has a first portion (57a') and a second portion (57b'), said first portion (57a') extending substantially the length of said ball portion (62) and into said raised arch portion (63) and being secured to said second portion (57b'), said second portion (57b') extending lengthwise from said raised arch portion (62) and substantially the length of said heel portion (61), said first (57a') and second (57b') portions being formed of a flexible material, said second portion (57b') being less flexible than said first portion (57a') so that said less flexible second portion (57b') reduces lateral movement of the heel of the wearer of the shoe (50).

6. A footwear system (20) according to Claim 2, 3, 4, or 5, wherein said ball portion (72) and major areas of said heel portion (71) of said molded foam layer (70) of said innersole (60) have substantially the same thickness and wherein said raised arch portion (73) of said molded foam layer (70) includes a hump (77) extending widthwise from the instep of said innersole (60) to medial portions of said raised arch portion (73) and having a greater thickness along the instep, decreasing thickness toward said medial portions of said raised arch portion (73), and substantially the same contour as major portions of the arch of the foot of a wearer and a plateau (78) extending outwardly from inwardly extending peripheries of said hump (77) and being about 0.32 cm (1/8th inch) thicker than either said ball portion (73) or said major areas of said heel portion (71) of said molded foam layer (70).

7. A footwear system (20) according to Claim 2, 3, 4, 5, or 6, wherein said heel portion (71) of said molded foam layer (70) of said innersole (60) further comprises a thickened outer peripheral edge defining a raised heel ridge (76) so as to provide additional support for side heel areas of the wearer thereby providing added comfort to the wearer.

8. A footwear system (20) according to Claim 7, wherein said raised heel ridge (76) of said molded foam layer (70) terminates at a lower height than said raised arch portion (73) of said molded foam layer (70).

9. A footwear system (20) according to Claim 8, wherein said raised arch portion (73) of said molded foam layer (70) has a peripheral instep edge defining an upstanding arch ridge (79) which uninterruptedly joins said raised heel ridge (76) and wherein said upstanding arch ridge (79) extends higher than said raised heel ridge (76) for enhancing support of the instep arch portion of the wearer.

10. A footwear system (20) according to Claim 2, 3, 4, 5, 6, 7, 8, or 9, wherein said raised arch portion (73) of said molded foam layer (70) has oppositely inclined fore (74) and aft (75) portions of decreasing thickness for providing a smooth transition with said thinner ball (72) and said major areas of said heel portion (71).

11. A footwear system (20) according to Claim 10, wherein said fore (74) and aft (75) portions of said raised arch portion (73) are substantially parallel in a transverse direction for a more effective matingly interfacing relationship with said thinner fabric arch portion (35) of said sock (30).

12. A footwear system (20) according to Claim 2, 3, 4, 5, 6, 7, 8, 9, 10, or 11, wherein said ball portion (72) and said heel portion (71) of said molded foam layer (70) each has a thickness of about 0.16 cm (1/16th inch), and said arch portion (73) of said molded foam layer (70) has a thickness of at least twice that of either said ball (72) or heel (71) portion to compensate for a relative height differential between the thicker fabric ball (33) and heel (34) portions and the thinner fabric arch portion (35) extending downwardly from the overlying knit sock (30) to matingly interface with upper parts of said sole of said shoe (50).

13. A footwear system (20) according to Claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12, wherein said thinner fabric arch portion (35) of said knit sock (30) has a substantially shorter lengthwise extent than either said ball (33) or heel (34) portions thereof and wherein said arch portion (35) of said sole of said shoe (50) has a substantially shorter lengthwise extent than either said ball portion (33) or said heel portion (34) of said sole so that the lengthwise extent of said raised arch portion (63) of said sole corresponds substantially to the lengthwise extent of said thinner fabric arch portion (35) of said sock (30).

14. A footwear system (20) according to Claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, or 13, wherein said thicker knit fabric of said sock (30) comprises a predetermined density of raised terry loops on the inside thereof.

15. A shoe (50) for providing enhanced comfort to the foot of a wearer, the shoe (50) comprising a multiple layer innersole (60) and an outersole (80), said multiple layer innersole (60) having a ball portion (62), a heel portion (61), and a raised arch portion (63) extending upwardly from said ball (62) and heel (61) portions so that said ball (62) and heel (61) portions are positioned at a relatively lower height than said raised arch portion (63), upper parts of said innersole (60) being adapted for interfacing with respective overlying portions of a knit sock (30) having ball (33) and heel (34) portions thereof being formed of thicker knit fabric than an arch portion (35) thereof thereby providing a greater amount of protection and cushioning to ball and heel portions of the foot of a wearer than to an arch portion of the foot, said raised arch portion (63) of said innersole (60) characterized by:
having a hump (77) for comfortably supporting the arch of the foot of the wearer, a substantial flat plateau portion (78) extending outwardly from inwardly extending peripheries of said hump (77), and oppositely inclined fore (74) and aft (75) portions adjacent said plateau portion (78) for providing a smooth transition with said ball portion (62) and major areas of said heel portions (61), said plateau portion (78) being arranged to compensate for a relative height differential between thicker fabric ball (33) and heel (34) portions and a thinner fabric arch portion (35) extending downwardly from an overlying knit sock (30) and thereby be adapted to provide a substantially mating interfacing relationship with a worn knit sock (30) for added protection and comfort to the wearer.

16. A shoe (50) according to Claim 15, wherein said multiple layer innersole (60) includes a backing layer (57) of substantially uniform thickness throughout and a molded foam layer (70) overlying said backing layer (57) and being secured thereto, said molded foam layer (70) and said backing layer (57) having substantially the same overall configuration, and said molded foam layer (70) having a thicker medial portion defining said raised arch portion (73) of said innersole (60).

17. A shoe (50) according to Claim 16, wherein said multiple layer innersole (60) further comprises a lining layer (90) overlying said molded foam layer (70) and being secured thereto, said lining layer (90) having substantially the same overall configuration as said molded foam layer (70) and said backing layer (57).

18. A shoe (50) according to Claim 16 or 17, wherein said backing layer (57) is integrally formed of a material being flexible enough to bend and being rigid enough so as to impart rigid support to the molded foam layer (70).

19. A shoe (50) according to Claim 16 or 17, wherein said backing layer (57) of said multiple layer innersole (60) has a first portion (57a') and a second portion (57b'), said first portion (57a') extending substantially the length of said ball portion (62) and into said raised arch portion (63) and being secured to said second portion (57b'), said second portion (57b') extending lengthwise from said raised arch portion (63) and substantially the length of said heel portion (61), said first (57a') and second (57b') portions being formed of a flexible material, said second portion (57b') being less flexible than said first portion (57a') so that said less flexible second portion (57b') reduces lateral movement of the heel of the wearer of the shoe (50).

20. A shoe (50) according to Claim 16, 17, 18, or 19, wherein said ball portion (72) and major areas of said heel portion (71) of said molded foam layer (70) of said innersole (60) have substantially the same thickness and wherein said plateau (78) of said raised arch portion (73) of said molded foam layer (70) is about 0.32 cm (1/8th inch) thicker than either said ball portion (72) or said major areas of said heel portion (71) of said molded foam layer (70).

21. A shoe (50) according to Claim 16, 17, 18, 19, or 20, wherein said heel portion (71) of said molded foam layer (70) of said innersole (60) further comprises a thickened outer peripheral edge defining a raised heel ridge (76) so as to provide additional support for side heel areas of the wearer thereby providing added comfort to the wearer.

22. A shoe (50) according to Claim 21, wherein said raised heel ridge (76) of said molded foam layer (70) terminates at a lower height than said raised arch portion (73) of said molded foam layer (70) and wherein said hump (77) of said raised arch portion (73) extends widthwise from the instep of said innersole (60) to medial portions of said raised arch portion (73) and has a greater thickness along the step, decreasing thickness toward said medial portions of said raised arch portion (73), and substantially the same contour as major portions of the arch of the foot of a wearer.

23. A shoe (50) according to Claim 22, wherein said raised arch portion (73) of said molded foam layer (70) has a peripheral instep edge defining an upstanding arch ridge (79) which uninterruptedly joins said raised heel ridge (76) and wherein said upstanding arch ridge (79) extends higher than said raised heel ridge (76) for enhancing support of the instep arch portion of the wearer.

24. A shoe (50) according to Claim 15, 16, 17, 18, 19, 20, 21, 22, or 23, wherein said fore (74) and aft (75) portions of said raised arch portion (73) are substantially parallel in a transverse direction.

25. A shoe (50) according to Claim 16, 17, 18, 19, 20, 21, 22, 23, or 24, wherein said ball portion (72) and said heel portion (71) of said molded foam layer (70) each have a thickness of about 0.16 cm (1/16th inch), and said plateau (78) of said raised arch portion (73) of said molded foam layer (70) has a thickness of at least twice that of either said ball (72) or heel (71) portion.

26. A shoe (50) according to Claim 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, or 25, wherein said arch portion (63) of said multilayer innersole (60) has a substantially shorter lengthwise extent than either said ball portion (62) or said heel portion (61) of said innersole (60).

27. An innersole (60) adapted to insert into a shoe (50), the innersole (60) comprising a ball portion (62), a heel portion (61), and a raised arch portion (63) extending upwardly from said ball (62) and heel (61) portions so that said ball (62) and heel (61) portions are positioned at a relatively lower height than said raised arch portion (63), upper parts of the innersole (60) being adapted for interfacing with respective overlying portions of a knit sock (30) having ball (33) and heel (34) portions thereof being formed of thicker knit fabric than an arch portion (35) thereof thereby providing a greater amount of protection and cushioning to ball and heel portions of the foot of a wearer than to an arch portion of the foot, said raised arch portion (63) of the innersole (60) characterized by:
having a hump (77) for comfortably supporting the arch of the foot of the wearer, a substantial flat plateau portion (78) extending outwardly from inwardly extending peripheries of said hump (77), and oppositely inclined fore (74) and aft (75) portions adjacent said plateau portion (78) for providing a smooth transition with said ball portion (62) and major areas of said heel portions (61), said plateau portion (78) being arranged to compensate for a relative height differential between thicker fabric ball (33) and heel (34) portions and a thinner fabric arch portion (35) extending downwardly from an overlying sock (30) and thereby be adapted to provide a substantially mating interfacing relationship with a worn knit sock (30) for added protection and comfort to the wearer thereof.

28. An innersole (60) according to Claim 27, wherein said innersole (60) further comprises multiple layers including a backing layer (57) of substantially uniform thickness throughout and a molded foam layer (70) overlying said backing layer (57) and being secured thereto, said molded foam layer (70) and said backing layer (57) having substantially the same overall configuration, and said molded foam layer (70) having a thicker medial portion defining said raised arch portion (73) of said innersole (60).

29. An innersole (60) according to Claim 28, wherein said multiple layer innersole (60) further comprises a lining layer (90) overlying said molded foam layer (70) and being secured thereto, said lining layer (90) having substantially the same overall configuration as said molded foam layer (70) and said backing layer (57).

30. An innersole according to Claim 28 or 29, wherein said backing layer (57) is formed of a material being flexible enough to bend and being rigid enough so as to impart rigid support to the molded foam layer (70).

31. An innersole according to Claim 28 or 29, wherein said backing layer (57) of said multiple layer innersole (60) has a first portion (57a') and a second portion (57b'), said first portion (57a') extending substantially the length of said ball portion (62) and into said raised arch portion (63) and being secured to said second portion (57b'), said second portion (57b') extending lengthwise from said raised arch portion (63) and substantially the length of said heel portion (61), said first (57a') and second (57b') portions being formed of a flexible material, said second portion (57b') being less flexible than said first portion (57a') so that said less flexible second portion (57b') reduces lateral movement of the heel of the wearer thereof.

32. An innersole (60) according to Claim 28, 29, 30, or 31, wherein said ball portion (72) and major areas of said heel portion (71) of said molded foam layer (70) of said innersole (60) have substantially the same thickness and wherein said plateau (78) of said raised arch portion (73) of said molded foam layer (70) is about 0.32 cm (1/8th inch) thicker than either said ball portion (72) or said major areas of said heel portion (71) of said molded foam layer (70).

33. An innersole (60) according to Claim 28, 29, 30, 31, or 32, wherein said heel portion (71) of said molded foam layer (70) of said innersole (60) further comprises a thickened outer peripheral edge defining a raised heel ridge (76) so as to provide additional support for side heel areas of the wearer thereby providing added comfort to the wearer.

34. An innersole (60) according to Claim 33, wherein said raised heel ridge (76) of said molded foam layer (70) terminates at a lower height than said raised arch portion (73) of said molded foam layer (70) and wherein said hump (77) of said raised arch portion (73) extends widthwise from the instep of said innersole (60) to medial portions of said raised arch portion (73) and has a greater thickness along the instep, decreasing thickness toward said medial portions of said raised arch portion (73), and substantially the same contour as major portions of the arch of the foot of a wearer.

35. An innersole (60) according to Claim 34, wherein said raised arch portion (73) of said molded foam layer (70) has a peripheral instep edge defining an upstanding arch ridge (79) which uninterruptedly, joins said raised heel ridge (76) and wherein said upstanding arch ridge (79) extends higher than said raised heel ridge (76) for enhancing support of the instep arch portion of the wearer.

36. An innersole (60) according to Claim 27, 28, 29, 30, 31, 32, 33, 34, or 35, wherein said fore (74) and aft (75) portions of said raised arch portion (73) are substantially parallel in a transverse direction.

37. An innersole (60) according to Claim 28, 29, 30, 31, 32, 33, 34, 35, or 36, wherein said ball portion (72) and said heel portion (71) of said molded foam layer (70) each have a thickness of about 0.16 cm (1/16th inch), and said plateau (78) of said raised arch portion (73) of said molded foam layer (70) has a thickness of at least twice that of either said ball (72) or heel (71) portion.

38. An innersole (60) according to Claim 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, or 37, wherein said arch portion (63) of said innersole (60) has a substantially shorter lengthwise extent than either said ball portion (62) or said heel portion (61) of said innersole (60).