CA1064251A - Shock absorbing athletic shoe with air cooled insole - Google Patents
Shock absorbing athletic shoe with air cooled insoleInfo
- Publication number
- CA1064251A CA1064251A CA309,399A CA309399A CA1064251A CA 1064251 A CA1064251 A CA 1064251A CA 309399 A CA309399 A CA 309399A CA 1064251 A CA1064251 A CA 1064251A
- Authority
- CA
- Canada
- Prior art keywords
- sole
- insole
- canals
- shoe
- canal
- 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.)
- Expired
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- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Disclosed herein is a shoe construction, especially well suited for athletic footwear, comprising a one-piece molded sole having a bottom tread surface and an upper "fully orthopedic" foot supporting surface, a plurality of primary canals formed at the upper surface of the sole extending from the peripheral edges thereof inwardly in predetermined patterns, a foot supporting insole mounted upon the upper surface of the sole and cooperating with the primary canals to define venti-lating air conduits, ventilating ports defined by the insole means and disposed in registry with the conduits, whereby ventilating air is free to communicated from exterior portions of the sole at peripheral portions thereof to the ??posed internal surface of said insole, and a foot enclosing upper secured to said sole. Advantageously, the body of the sole between the canals is provided with cells or cavities which extend inwardly from the upper surface of the sole for the major portion of the thickness of said sole, whereby the cavities, in conjunctions with the canals and the insole, provide the sole with an effective lightweight, strong, flexible and re-silient honeycomb structure.
Disclosed herein is a shoe construction, especially well suited for athletic footwear, comprising a one-piece molded sole having a bottom tread surface and an upper "fully orthopedic" foot supporting surface, a plurality of primary canals formed at the upper surface of the sole extending from the peripheral edges thereof inwardly in predetermined patterns, a foot supporting insole mounted upon the upper surface of the sole and cooperating with the primary canals to define venti-lating air conduits, ventilating ports defined by the insole means and disposed in registry with the conduits, whereby ventilating air is free to communicated from exterior portions of the sole at peripheral portions thereof to the ??posed internal surface of said insole, and a foot enclosing upper secured to said sole. Advantageously, the body of the sole between the canals is provided with cells or cavities which extend inwardly from the upper surface of the sole for the major portion of the thickness of said sole, whereby the cavities, in conjunctions with the canals and the insole, provide the sole with an effective lightweight, strong, flexible and re-silient honeycomb structure.
Description
~ ~ 4~ S ~
A plethora of shoe con~tructions having various cushioning, traction, shock absorption, and air cooling arrange-ments are known to the art. Representative of these arrangements are those shown in U.S. Patents Nos. 2,725,645; 2,627,676;
1,606,529; 1,653,059; 1,711,302; 2,114,421; 3,043,025; 3,237,322;
3,316,662; 3,555,697; 3,803,731; and 3,849,915. The present invention represents a contribution to and an advance in the existing state of the art and provides a new and improved shoe construction, especially well suited for athletic shoes.
In accordance with the principles of the present invention, a new and improved unit sole having unique shock absorbing, traction, and cooling elements is molded from a resilient rubberlike material, such as "Kraton" thermoplastic rubber, a springy, styrene-butadiene `
block copolymer, produced by Shell Chemical Company. "Kraton" is a -registered trademark of the Shell Chemical Company. The new unit ~-sole has a foot conforming or so-called "orthopedlc" upper surface, which is provided with a network of air canals which directly communi- ~ - -cate with the ambient atmosphere outside of the sole to permit air to flow into the sole structure and pass through the insole to cool - 20 the bottom of the feet of the wearer of the new athletic shoe. The insole, as will be understood, may be provided with a series of perforations or air ports in registry ~ith the canals to allow air flo~ing through the canals to circulate within the shoe. Air cir-culation is enhanced by the natural pumping action occasioned by the compression and expansion of the resilient sole unit itself during the use thereof.
As a further important feature of the sole of the present invention, a new and improved tread configuration is provided at the lower surface of the sole to provide enhanced traction, shock absorption and propulsion characteristics to athletic soles of this general type. Specifically, the lower sur-face of the shoe is provided with a perlpheral rim which ,~k~
lie~ in the lower plane of the sole. The remainder of the , 1CNj4'~ 5 1 traction surface, representing a mlnor portion of the entire foot - profile, is comprised of cylîndrical shock absorbers, the lower surfaces of which lie in the plane of the peripheral rim. The top portion of the sole is upwardly canted and elevated with respect to the remainder of the sole, while the rearwardmost portion is slightly beveled.
Each of the cylindrical shock absorbers are of suffi-cient depth so as to be compressible and laterally flexible in a manner whereby to provide substantial shock absorption. In addition, the configuration and array of the shock absorbers is such as to provide extraordinary and universal traction on a wide variety of athletic surfaces ranging from natural and synthetic turf and comparable soft surfaces to hard surfaces~ both synthetic and natural. Moreover, the construction and recessing of the traction elements with respect to the lowermost plane of the sole tends to protect sensitive surfaces from undue damage.
For a more compiete understanding of the present invention and a better appreciation of its attendant advantages, reference should be made to the following detailed description of an illustrative embodiment thereof taken in con~unction with the accompanying drawings.
Fig. 1 is a side elevational view of a new and improved athletic shoe embodying the principleæ of the invention;
Fig. 2 is a plan view of the insole of the pres~ent invention with parts broken away to show details of construction of the new athletic shoe;
Fig. 3 is a fragmentary, cross-sectional view taken along line 3-3 of Fig. 2;
Fig. 4 is a bottom plan view of the unit sole of the new athletic shoe; and Fig. 5 is an enlarged fragmentary, cross-sectional view of the sole taken along line 5-5 of Fig. 4 to show details of construction thereof.
~* ~ . ~ '' ? -- - ~
iC~j4'~ 5 1 Referring now to Fig, 1, the athletic shoe of the present invention co~prises an upper 10 of any generally well known configuration which may be made of leather, textile, synthetic, or like upper material or any combination thereof, which is adhered to a new and improved natural or synthetic rubber, for example, "Kraton", unit sole bottom 11, by suit-able adhesives and/or w lcanization or other conventional techniques for bonding uppers to lowers. (See, for example, U.S. Patents Nos. 3,477,148 and 3,501,855.) Advantageously, the upper may be of the "oxford" type and includes a tongue 8, ~ -eyelets 9, a reinforced heel support 19, a cushioned collar 12, suitable ventilating ports 13 and a box toe 14, all of - -which details are, of course, well known to the art and form no part of the present invention.
As is conventional with athletic shoes of this type, the upper has a circumscribing flange or lower edge portion 15 (Fig. 2) which is adhered by adhesive 16 to the top surface 17 of the unit sole bottom 11. An insole 18 of leather, textile or ~ -appropriate sheet material is superimposed over the flange 15 and is adhered at 15l the$eto andtQ~ to the top surface 17 of the bottom member 11 by the adhesive 16' to form a foot supporting surface.
The new unit sole 11 has a circumscribing upper rim ~-20 into which i8 nested the flange or lower edge portions 15 of .~ .
the upper 10, as shown in Fig. 2. The contour of the upper surface 17 of the unit sole 11 i8 foot conforming or so-called "orthopedic". That is to say, the arch portion 21 (Fig. 1) is elevated and specifically contoured to support the arch at the instep of the wearer's foot, and the remainder of the sole i8 similarly contoured to conform to the anatomy of a foot bottom.
Thus, as shown in Fig. 3, ball supporting portions of the upper surface 17 of the sole are generally concave, as are the heel D .,~ '.
~!
,' ~ '. , .~' .
~ .o64z5~
supporting portions of the sole 11. More speclfically, an~
in accordance with the principles of the invention, a network of air canals 30 is formed at the upper surfaces 17 of the unit sole 11. The network 30 includes a canal 31 extending from the rear edge of the sole to the ball portion thereof, and a series of chevron-shaped canals 32 intersecting the ma~or canal 31 and extending completely across the upper surface of the soles. Each of the canals 31, 32 terminates in an air port 33 at the side edge of the sole. In accordance with the invention, cooling air is pumped through the port into ant out of the network 30 by the expansion and contraction of the sole during walking. More specifically, the network additionally : includes chevron-shaped tributary canals 34 in the center of the sole, which canals 34 terminate inwardly of the rim 20 circumscribing the sole. As shown in Fig. 3, air is free to ~; -enter ports 33 and travel through the canals 31, 32 through the sole body and up through perforations 36, formed in the .
- insole 18 to cool the bottom surfaces of the foot of a wearer, : `
~ as will be appreciated.
i 20 In order to enhance the resilience of the unit sole 11, as well as to generally reduce its overall weight and to provide it with a general internal honeycomb structure, a series of cells or voids 35 are formed in the regions between the canals 31, 32 forming the network 30. ln the embodiment of the sole i;; shown in Fig. 2, the voids are generally circular in cross section, generating an irregular, ceIlular honeycomb structure in the sole, however, it i8 to be understood that the walls of - the honeycomb may be uniform and the individual cells in the --I honeycomb may be any shape desired or found necessary, Tt wlll be appreciated, of course, that the honeycomb structure enhances, by mechanical means, the inherent resillence of the particular rubber composition used in the molding of the unit sole 11.
The running, walking and~or other treading character-, 4 .,,~ : ', , ~ ; ' "
: ~,.: . -.
1C~j4'~ 5 ~
istics of the new athletic shoe are further enhanced, along with the shock absorbing characteristics of the new shoe, by the configuration of the lower surfaces of the unit sole 11, as well as its overall contour. Specifically, the forward portions from the ball of the foot to the toe are elevated with ; respect to the major remaining portions of the sole at an angle of elevation A of approximately 15-20 degrees. Similarly, the rearwardmost portion is elevated with respect to the horizontal major portions of the sole by an angle B of approximately 15-20 degrees.
Referring now to Figs. 4 and 5, the tread 50 at the bottom of the new unit sole is especially formed and ; arranged to maximize traction and shock absorption.
Circumscribing the sole 11 is a rim or bead 51, the flat lowermost surfaces 52 of which are definitive of a primary bottom plane A-A of the sole. Recessed and tertiary bottom surfaces 53, 54 in secondary bottom planes B-B and C-C, respectively, are digposed parallel to the primary plane A, Extending downwardly from plane C-C are major or primary cylindrical shock absorb~ng elements 55, each ~aving ; a bottom surface 56 dlsposed in plane A-A and being separated from the remainder of the sole by an annular recess 60, These elements 55 are arrayed about the periphery o the sole bottom as weIl as throughout the central area of the sole bottom 11, as shown in Fig. 4~ Enhanced shock`absorption and traction a~e ; obta~ned by providing each of the major shock absorbers 55 with a mini-shock absorber 57 of cylindrical shape and formed in the lowe D st portions of the absorber elements 55 by annular recesses 58 concentric therewith. Advantageously, still further enhancement ; 30 of the traction and shock absorption of the sole is provided by surrounding each of the shock absorbers 55 adjacent the rim 51 with a shallow ring tread 59 extending from plane B-B to plane A-A, as shown in Fig. 5.
1(~}~1 In accordance with the invention, the aforementioned array of tread elements 50-60 are free, owing to their size and configuration, to be displaced by flexion and compression in the X, Y and Z axes upon impact of the sole. Thus, they provide extraordinary shock absorption and traction on a wide variety of surfaces (hard, soft, smooth, rough, turf-like, cinder, etc.). Moreover, individual areas of the sole may bend, along the canals, relative to and independently of one another in use, by virtue of their shape and location and the slope of the forwardmost and rearwardmost sole por-tions.
It should be understood that the new sole, fabricated from an elastomeric material, such as natural or synthetic rubber (advantageously, "Kraton" thermoplastic rubber, a styrene-butadiene block polymer described in more detail at pp. 114 and 116 of the 1973-1974 Modern Plastic Encyclopedia), is extraordinarily resilient and comfortable due to the lnherent : characteristics of the rubber mate~ial from which it is fo~med in combination with the physical characteristics imparted thereto by the honeycomb internal structuse and special external tread structure and, therefore, the new sole is especialiy well æuited for shoes of all types to be used by people during athletic endeavors, walking, standing, or working. Accordingly, while the construction of the shoe of the present invention is such that it is eminently well suited for athletic shoe use, its extreme comfort, traction, and shock absorption characteristics, and air cooling make it an ideal construction for use in other types of shoes, boots, and footwear.
Thus, in its broadest aspects, the invention contem-plates a shoe construction comprising a one-piece molded sole of resilient elastomeric material having a bottom tread surface and an upper foot supporting surface; a plurality of canal means formed at the upper surface of said sole extending from the ,~ .
1C~j4~ ~ 1 peripheral edges thereof inwardly in predetermined patterns;
foot supporting insole means mounted upon the upper surface of said sole and cooperating with said primary canal means to define ventilating air conduits; and foot enclosing upper means secured to said sole.
, :- .
:
~ .
. .
.. .. .
. .
A plethora of shoe con~tructions having various cushioning, traction, shock absorption, and air cooling arrange-ments are known to the art. Representative of these arrangements are those shown in U.S. Patents Nos. 2,725,645; 2,627,676;
1,606,529; 1,653,059; 1,711,302; 2,114,421; 3,043,025; 3,237,322;
3,316,662; 3,555,697; 3,803,731; and 3,849,915. The present invention represents a contribution to and an advance in the existing state of the art and provides a new and improved shoe construction, especially well suited for athletic shoes.
In accordance with the principles of the present invention, a new and improved unit sole having unique shock absorbing, traction, and cooling elements is molded from a resilient rubberlike material, such as "Kraton" thermoplastic rubber, a springy, styrene-butadiene `
block copolymer, produced by Shell Chemical Company. "Kraton" is a -registered trademark of the Shell Chemical Company. The new unit ~-sole has a foot conforming or so-called "orthopedlc" upper surface, which is provided with a network of air canals which directly communi- ~ - -cate with the ambient atmosphere outside of the sole to permit air to flow into the sole structure and pass through the insole to cool - 20 the bottom of the feet of the wearer of the new athletic shoe. The insole, as will be understood, may be provided with a series of perforations or air ports in registry ~ith the canals to allow air flo~ing through the canals to circulate within the shoe. Air cir-culation is enhanced by the natural pumping action occasioned by the compression and expansion of the resilient sole unit itself during the use thereof.
As a further important feature of the sole of the present invention, a new and improved tread configuration is provided at the lower surface of the sole to provide enhanced traction, shock absorption and propulsion characteristics to athletic soles of this general type. Specifically, the lower sur-face of the shoe is provided with a perlpheral rim which ,~k~
lie~ in the lower plane of the sole. The remainder of the , 1CNj4'~ 5 1 traction surface, representing a mlnor portion of the entire foot - profile, is comprised of cylîndrical shock absorbers, the lower surfaces of which lie in the plane of the peripheral rim. The top portion of the sole is upwardly canted and elevated with respect to the remainder of the sole, while the rearwardmost portion is slightly beveled.
Each of the cylindrical shock absorbers are of suffi-cient depth so as to be compressible and laterally flexible in a manner whereby to provide substantial shock absorption. In addition, the configuration and array of the shock absorbers is such as to provide extraordinary and universal traction on a wide variety of athletic surfaces ranging from natural and synthetic turf and comparable soft surfaces to hard surfaces~ both synthetic and natural. Moreover, the construction and recessing of the traction elements with respect to the lowermost plane of the sole tends to protect sensitive surfaces from undue damage.
For a more compiete understanding of the present invention and a better appreciation of its attendant advantages, reference should be made to the following detailed description of an illustrative embodiment thereof taken in con~unction with the accompanying drawings.
Fig. 1 is a side elevational view of a new and improved athletic shoe embodying the principleæ of the invention;
Fig. 2 is a plan view of the insole of the pres~ent invention with parts broken away to show details of construction of the new athletic shoe;
Fig. 3 is a fragmentary, cross-sectional view taken along line 3-3 of Fig. 2;
Fig. 4 is a bottom plan view of the unit sole of the new athletic shoe; and Fig. 5 is an enlarged fragmentary, cross-sectional view of the sole taken along line 5-5 of Fig. 4 to show details of construction thereof.
~* ~ . ~ '' ? -- - ~
iC~j4'~ 5 1 Referring now to Fig, 1, the athletic shoe of the present invention co~prises an upper 10 of any generally well known configuration which may be made of leather, textile, synthetic, or like upper material or any combination thereof, which is adhered to a new and improved natural or synthetic rubber, for example, "Kraton", unit sole bottom 11, by suit-able adhesives and/or w lcanization or other conventional techniques for bonding uppers to lowers. (See, for example, U.S. Patents Nos. 3,477,148 and 3,501,855.) Advantageously, the upper may be of the "oxford" type and includes a tongue 8, ~ -eyelets 9, a reinforced heel support 19, a cushioned collar 12, suitable ventilating ports 13 and a box toe 14, all of - -which details are, of course, well known to the art and form no part of the present invention.
As is conventional with athletic shoes of this type, the upper has a circumscribing flange or lower edge portion 15 (Fig. 2) which is adhered by adhesive 16 to the top surface 17 of the unit sole bottom 11. An insole 18 of leather, textile or ~ -appropriate sheet material is superimposed over the flange 15 and is adhered at 15l the$eto andtQ~ to the top surface 17 of the bottom member 11 by the adhesive 16' to form a foot supporting surface.
The new unit sole 11 has a circumscribing upper rim ~-20 into which i8 nested the flange or lower edge portions 15 of .~ .
the upper 10, as shown in Fig. 2. The contour of the upper surface 17 of the unit sole 11 i8 foot conforming or so-called "orthopedic". That is to say, the arch portion 21 (Fig. 1) is elevated and specifically contoured to support the arch at the instep of the wearer's foot, and the remainder of the sole i8 similarly contoured to conform to the anatomy of a foot bottom.
Thus, as shown in Fig. 3, ball supporting portions of the upper surface 17 of the sole are generally concave, as are the heel D .,~ '.
~!
,' ~ '. , .~' .
~ .o64z5~
supporting portions of the sole 11. More speclfically, an~
in accordance with the principles of the invention, a network of air canals 30 is formed at the upper surfaces 17 of the unit sole 11. The network 30 includes a canal 31 extending from the rear edge of the sole to the ball portion thereof, and a series of chevron-shaped canals 32 intersecting the ma~or canal 31 and extending completely across the upper surface of the soles. Each of the canals 31, 32 terminates in an air port 33 at the side edge of the sole. In accordance with the invention, cooling air is pumped through the port into ant out of the network 30 by the expansion and contraction of the sole during walking. More specifically, the network additionally : includes chevron-shaped tributary canals 34 in the center of the sole, which canals 34 terminate inwardly of the rim 20 circumscribing the sole. As shown in Fig. 3, air is free to ~; -enter ports 33 and travel through the canals 31, 32 through the sole body and up through perforations 36, formed in the .
- insole 18 to cool the bottom surfaces of the foot of a wearer, : `
~ as will be appreciated.
i 20 In order to enhance the resilience of the unit sole 11, as well as to generally reduce its overall weight and to provide it with a general internal honeycomb structure, a series of cells or voids 35 are formed in the regions between the canals 31, 32 forming the network 30. ln the embodiment of the sole i;; shown in Fig. 2, the voids are generally circular in cross section, generating an irregular, ceIlular honeycomb structure in the sole, however, it i8 to be understood that the walls of - the honeycomb may be uniform and the individual cells in the --I honeycomb may be any shape desired or found necessary, Tt wlll be appreciated, of course, that the honeycomb structure enhances, by mechanical means, the inherent resillence of the particular rubber composition used in the molding of the unit sole 11.
The running, walking and~or other treading character-, 4 .,,~ : ', , ~ ; ' "
: ~,.: . -.
1C~j4'~ 5 ~
istics of the new athletic shoe are further enhanced, along with the shock absorbing characteristics of the new shoe, by the configuration of the lower surfaces of the unit sole 11, as well as its overall contour. Specifically, the forward portions from the ball of the foot to the toe are elevated with ; respect to the major remaining portions of the sole at an angle of elevation A of approximately 15-20 degrees. Similarly, the rearwardmost portion is elevated with respect to the horizontal major portions of the sole by an angle B of approximately 15-20 degrees.
Referring now to Figs. 4 and 5, the tread 50 at the bottom of the new unit sole is especially formed and ; arranged to maximize traction and shock absorption.
Circumscribing the sole 11 is a rim or bead 51, the flat lowermost surfaces 52 of which are definitive of a primary bottom plane A-A of the sole. Recessed and tertiary bottom surfaces 53, 54 in secondary bottom planes B-B and C-C, respectively, are digposed parallel to the primary plane A, Extending downwardly from plane C-C are major or primary cylindrical shock absorb~ng elements 55, each ~aving ; a bottom surface 56 dlsposed in plane A-A and being separated from the remainder of the sole by an annular recess 60, These elements 55 are arrayed about the periphery o the sole bottom as weIl as throughout the central area of the sole bottom 11, as shown in Fig. 4~ Enhanced shock`absorption and traction a~e ; obta~ned by providing each of the major shock absorbers 55 with a mini-shock absorber 57 of cylindrical shape and formed in the lowe D st portions of the absorber elements 55 by annular recesses 58 concentric therewith. Advantageously, still further enhancement ; 30 of the traction and shock absorption of the sole is provided by surrounding each of the shock absorbers 55 adjacent the rim 51 with a shallow ring tread 59 extending from plane B-B to plane A-A, as shown in Fig. 5.
1(~}~1 In accordance with the invention, the aforementioned array of tread elements 50-60 are free, owing to their size and configuration, to be displaced by flexion and compression in the X, Y and Z axes upon impact of the sole. Thus, they provide extraordinary shock absorption and traction on a wide variety of surfaces (hard, soft, smooth, rough, turf-like, cinder, etc.). Moreover, individual areas of the sole may bend, along the canals, relative to and independently of one another in use, by virtue of their shape and location and the slope of the forwardmost and rearwardmost sole por-tions.
It should be understood that the new sole, fabricated from an elastomeric material, such as natural or synthetic rubber (advantageously, "Kraton" thermoplastic rubber, a styrene-butadiene block polymer described in more detail at pp. 114 and 116 of the 1973-1974 Modern Plastic Encyclopedia), is extraordinarily resilient and comfortable due to the lnherent : characteristics of the rubber mate~ial from which it is fo~med in combination with the physical characteristics imparted thereto by the honeycomb internal structuse and special external tread structure and, therefore, the new sole is especialiy well æuited for shoes of all types to be used by people during athletic endeavors, walking, standing, or working. Accordingly, while the construction of the shoe of the present invention is such that it is eminently well suited for athletic shoe use, its extreme comfort, traction, and shock absorption characteristics, and air cooling make it an ideal construction for use in other types of shoes, boots, and footwear.
Thus, in its broadest aspects, the invention contem-plates a shoe construction comprising a one-piece molded sole of resilient elastomeric material having a bottom tread surface and an upper foot supporting surface; a plurality of canal means formed at the upper surface of said sole extending from the ,~ .
1C~j4~ ~ 1 peripheral edges thereof inwardly in predetermined patterns;
foot supporting insole means mounted upon the upper surface of said sole and cooperating with said primary canal means to define ventilating air conduits; and foot enclosing upper means secured to said sole.
, :- .
:
~ .
. .
.. .. .
. .
Claims (4)
1. A shoe construction comprising (8) a one-piece molded sole of resilient elastomeric material having a bottom tread surface and an upper surface; (b) a plurality of canal means formed in the upper surface of said sole extending from the peripheral edges thereof inwardly in predetermined patterns;
(c) foot supporting insole means mounted upon the upper surface of said sole and confronting the open side of said canal means to define ventilating air conduits; (d) ventilating ports defined by said insole means and disposed in registry with said conduits, whereby ventilating air is free to communicate from exterior portions of said sole at peripheral portions thereof to the ex-posed internal surface of said insole; (e) said upper surface of said sole being provided with an orthopedic contour whereby said upper surface is generally conformed to the anatomical contours of the sole of a human foot; (f) said canal means being arrayed in a configuration which includes a major canal extending longi-tudinally from the rear edge of said sole to the toe portion thereof and a series of transverse canals intersecting therewith and extending outwardly therefrom; (g) said outwardly extending canals being generally chevron-shaped and diverging outwardly and forwardly of said shoe; (h) the forward ones of said canals forming axes facilitating the flexion of said sole thereabout;
and (i) foot enclosing upper means secured to said sole.
(c) foot supporting insole means mounted upon the upper surface of said sole and confronting the open side of said canal means to define ventilating air conduits; (d) ventilating ports defined by said insole means and disposed in registry with said conduits, whereby ventilating air is free to communicate from exterior portions of said sole at peripheral portions thereof to the ex-posed internal surface of said insole; (e) said upper surface of said sole being provided with an orthopedic contour whereby said upper surface is generally conformed to the anatomical contours of the sole of a human foot; (f) said canal means being arrayed in a configuration which includes a major canal extending longi-tudinally from the rear edge of said sole to the toe portion thereof and a series of transverse canals intersecting therewith and extending outwardly therefrom; (g) said outwardly extending canals being generally chevron-shaped and diverging outwardly and forwardly of said shoe; (h) the forward ones of said canals forming axes facilitating the flexion of said sole thereabout;
and (i) foot enclosing upper means secured to said sole.
2. The shoe of claim 1, further characterized in that the body of said sole between said canal means is provided with cavities which extend downwardly from the upper surface of said sole for the major portion of the thickness of said sole whereby said cavities, in conjunction with said canal means and said insole, provide said sole with an effective lightweight, strong, flexible and resilient honeycomb structure.
3. The shoe of claim 1, in which the rearwardmost heel portion of said sole is beveled and the forward portions of said sole from the toe to the commencement of the arch are disposed at an angle to the horizontal lower surface of the remainder of the sole.
4. The shoe of claim 3, further characterized in that (a) the bottom surfaces of said forward portions are dis-posed at an angle of 20° with respect to the horizontal surface of the remainder of the sole; (b) said lower surface of said beveled heel portion is disposed at an angle of 20° with respect to the horizontal base portion of the remainder of said sole,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA309,399A CA1064251A (en) | 1975-04-22 | 1978-08-15 | Shock absorbing athletic shoe with air cooled insole |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/570,438 US4000566A (en) | 1975-04-22 | 1975-04-22 | Shock absorbing athletic shoe with air cooled insole |
| CA250,203A CA1060646A (en) | 1975-04-22 | 1976-04-13 | Shock absorbing athletic shoe with air cooled insole |
| CA309,399A CA1064251A (en) | 1975-04-22 | 1978-08-15 | Shock absorbing athletic shoe with air cooled insole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1064251A true CA1064251A (en) | 1979-10-16 |
Family
ID=27164420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA309,399A Expired CA1064251A (en) | 1975-04-22 | 1978-08-15 | Shock absorbing athletic shoe with air cooled insole |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1064251A (en) |
-
1978
- 1978-08-15 CA CA309,399A patent/CA1064251A/en not_active Expired
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