CA1097064A - Shoe sole construction - Google Patents
Shoe sole constructionInfo
- Publication number
- CA1097064A CA1097064A CA315,733A CA315733A CA1097064A CA 1097064 A CA1097064 A CA 1097064A CA 315733 A CA315733 A CA 315733A CA 1097064 A CA1097064 A CA 1097064A
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- sole
- outwardly
- tread members
- shoe
- lugs
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Abstract
SHOE SOLE CONSTRUCTION
ABSTRACT
A shoe sole having a tread defining a longitudinally orientated concavity with the lower extremities of the sole embodied in downwardly and outwardly disposed flex-ible lugs to cushion the foot against impact loads. An imaginary plane containing the lowermost points of inner and outer lugs, adjacent each side of the sole, inter-sects a projection of the sole edge at an acute angle.
Accordingly, the lugs may readily flex relative to other sole components for cushioning purposes. Rows of lugs spaced inwardly from the sole edges are of a lesser vertical dimension than the outermost lugs and serve to supplement cushioning. A web extends between some of the outer lugs to reinforce same against load deflection.
Further, the outer lugs may be of non-uniform lateral dimension at the heel portion of the sole.
ABSTRACT
A shoe sole having a tread defining a longitudinally orientated concavity with the lower extremities of the sole embodied in downwardly and outwardly disposed flex-ible lugs to cushion the foot against impact loads. An imaginary plane containing the lowermost points of inner and outer lugs, adjacent each side of the sole, inter-sects a projection of the sole edge at an acute angle.
Accordingly, the lugs may readily flex relative to other sole components for cushioning purposes. Rows of lugs spaced inwardly from the sole edges are of a lesser vertical dimension than the outermost lugs and serve to supplement cushioning. A web extends between some of the outer lugs to reinforce same against load deflection.
Further, the outer lugs may be of non-uniform lateral dimension at the heel portion of the sole.
Description
1097~64 SPECIFIC.ATION
rrhe present invention relates genexally to shoes anld specifically to shoe sole constructionO The increased popularity of competitive and recreational running, witnessed in the last few years, has resulted in the introduction of a wide variety of athletic shoe designs wherein shoe upper and sole construction have embodied changes directed toward specific objectives. For example, in the prior art is shoe sole construction hav-ing ~flared~ ~ide edges extending continuously about theheel portion ostensibly for supplementing heel stability, and sole constructions with tread designs directed toward minimizing impact loads on the foot and leg.
To the extent the prior art is known, efforts have been made to provide soles for athletic shoes with the sole having cupped tread surfaces with the outer tread surfaces being continuous in order to affect a momentary seal between the sole and floor for traction purposes.
The present invention is embodiad in sole construc-tion wherein sole components are intended to provide,among other objectives, desired cushioning of the wearer's foot and leg regardless of the surface xun on to r~duce impact loads and the chance of ~oot or leg injuries to the wearer.
The present sole construction benefits from a lengthwise orientated concave shape exténding along the shoe sole with the composite surfaces of the sole tread defining the concavity. m e lower extremities o the tread are adapted to flex upwardly and outwardly rela-tive to the shoe upper upon ground contact. Accordingly,a central portion of the outer sole directly below the foot i~ supported in cantilever fashion by the tread and resiliently cushions the ~oot as the shoe comes into maximum ground contact. As greater impact loads are encountered by the heel portion of the shoe, this feature is particularly important when embodied within the heel.
The forward portion of the sole underlying the forefoot and ball of the foot, while not subjected to as great impact foxces, doe~ bear greater overall loads during runniny, which loads are resiliently supported by the forward tread portion of the present sole while import-antly pro~iding the sole flexLbility desired.
While the present invention is shown and describad in conjunction with an athletic shoe, such is not intended to imply limited use of same but rather the present sole con~truction may be further utilized in other footwear as later elaborated upon.
The present invention is embodied within shoe sole con~tructisn ~ncluding an outer serie~ of resilient tread components spaced about the sole margin each having downwaxdly converging walls terminatin~ in a lowermost extxemity, an inner series of resilient tread components offset inwardly from the sole margin and each being of a lesser hei~ht than those components of said outer ~erie9 an~d each having a lowermost extremity offset up-ward and ilnwardly rom an adjacent outer tread component extremLty, said lowermost extremities of adjacent outer and inner tread components on one side of the 901e axis being with:Ln an outwardly and downwardly inclined plane, said plane intersectin~ an upright plane containing the 3Q ~ole edge to define an acute included angle, certain outer tread components contactible firstly with a ground .
11~97064 surface and deformable to cushion impact loads, certain inner tread components subsequently contactible with the ground surface to supplement the cushioning action of t:he outer tread components, and said outer tread compon-ents when in foot biased contact with the ground being displaced outwardly past said upright plane.
In the accompanying drawing:
Figure 1 is a side elevational view of a shoe embodying the p.resent sole improvementQ;
Figure 2 is a bottom plan view of Figure l;
Figures 3 and 4 are sectional views taken along lines 3-3 and 4-4 of Figure 1 showing the transverse ; configurations of heel and forefoot sole portion~;
Figures S and 6 cQrrespond to Figures 3 and 4 and show the sole heel and forefoot sole portions in ground contact Figure 7 is a sectional view of modified sole con-struction;
Figure 8 is another sectional view of a further form of modified sole construction;
Figure 9 is a sectional ~iew of still another form o~ modified ~ole construction;
Figure 10 is a plan view of a distinct shoe sole an~ heel embodying the present invention Figure 11 is a ~ottom plan view of shoe sole con-struction embodying the pxesent invention, and Figure 12 i8 a sectional view taken along line 12-12 o~ Figure 11 rotated through ninety degrees.
With continuing attention to the drawing, the ref-eren~e numeral 1 indicates the upper of an athleticshoe customarily fabricated ~rom stitched fabric or ~(~97064 leather pieces. The upper forms no part of the present invention and, accordingly, further details of same are superfluous.
The present sole construction is indicated generally at 2 and includes a tread or that portion of the sole coming into ground con~act. Customarily, athletie shoes of the type shvwn have sole including an insole 3, a mid-sole 4, a resilient heel wedge 5 and an outer sole 6.
The upper 1 and mid-sole 4 are typically bonded to one another by an adhesive. In athletic shoes it is further typical to form the heel portion of outer sole 6 integral with the ~orefoot portion of the sole with the combined portions constituting the shoe sole tread.
With attention first to the heel portion of the sole, approximately the left hand half of the sole as viewed in Figure 2, said heel portion, as typically shown in Figure 3, includes an outer series of resilient compon-ents or lugs 7 each having outwardly and downwardly inclined walls (relative the sole major axis) at 10 and .
11 terminating at a lower extremity or edge 12. Wall 11 constitutes a lug bottom wall. An inner series of resil-ient components or lugs 13 is ofset from the sole edge and staggered relative the outer ~eries of components and is of les~er vertical dimension with each including ~downwardly inclined walls at 14 and 15 terminating at a lower extre~ity or edge 16. A plane at Pl contains lower edges 12 and 16 of the inner and outer lugs of Figure 3 and intersects a second plane P2 common to the outer wall 10 of an outer lug 7 and an inclined side 5A
of heel wedge 5. While the ter~ "planel~ is used in the foregoing description, it will ~e understood that wall surface 10 ~ay be other than planar as may inclined walls 11 and 14, 15 of lugs 7 and 13. The intersection of Pl and P2 defines an acute included angle at x~
With attention now to Figure ~, mid-sole 4 is shown sui*ably secured to the underside of upper 1 as by an adhesive and serves to receive the forefoot portion (the right hand half of Figure 2) of outer sole 6~ Outer sole 6 is provided with an outer row or series of tread com-ponents or lugs 17 each having an outer wall 18 and a bottom wall 20 converging at a lowexmost extremity or edge 21. Inner rows or series of tread components or lugs are indicated at 22 and 23 with the lugs of each row having wall surfaces generally corresponding to those wall surfaces of outer lugs 17 but of a lesser vertical distance resulting in lugs 22-23 being of lesser overall height. Lugs 22 and 2~ terminate downwardly in lowermost extremities 24 and 25 within a plane P3 which plane intersects a plane P4 containing outer lug wall 18, at an acute angle at y. While plane P4 is shown as being vertical, the same is preferably outwardly inclined from the side 4A of mid-sole 4.
Now with attention to Figure 5, showing heel pOrtiQn of the present sole construction i~ foot biased contact with a ground surface S, the lugs 7 are shown displaced ou~wardly and compressed from their unbiased position of Fi~ure 3. Subsequently, inner series of lugs 13 are also compressed under foot pressure, deforming upon con-tact with the ground surface. Importantly, lower edges 12 initially contact the ground surface and flex to cushion initial ground contact with their compression and outward displacement contributing to the cushioning ~097064 ef~ect. Supplementin~ the action of lugs 7, and after dlisplacement of same, inner lugs 13 also yield under heel pressure to provide a second stage of shocX or impact absorption.
The ground engagement and lateral displacemen~ of outer lugs 7 also contributes toward heel stability.
Further, non~uniform displacement and compression of the sole lugs accommodates asymmetrical sole loading as occurs when the runner executes a change of direction.
The reduced section side areas of resilient heel wedge 5 and mid-sole 4 will also be, of course, subjected to some degree of compression during ground contact.
In a similar manner, outer lugs 17 of the forefoot portion of the sole are initially displaced upon contact with ground surface S per Figure 6. Subsequent to initial displacement of outer lugs 17, the inner series of lugs 22 and 23 come into progressive (in a lateral direction) contact with the ground to pro~ide supplementary or secondary cushioning to the forefoot beyond t~at already provided by the flexing of outer lugs 17. -`
Forefoot lugs 17, 22 and 23, in addition to cushion-ing against jarring impact, serve to provide a tread pattern highly adaptable to flexibly encompass rocks, projections and other small obstructions on the ground surace without significantly effecting foot-to-ground relationship or signi~icantly diminishing tread traction~
Further, the lugs provide excellent traction and permit independent degrees of lug 1exing and compression, advantageous during execution of changes of direction by the wearer.
Figures 7, 8 and 9 show sectional views of modified sole con~tructions correcponding to the typical heel portion sectional vlew of Figur~ 3 of the first de~cribed form of the inv~ntion. In Figure 7, an outer ~ole i8 indicated at 26 affixed in a suitable ~anner to a heel wedge 27 with a ~id-sole ind~cated at 28. me heel wedge has outwardly and aownwardly sloped sidos 27A for greater resiliency. Outer 801e co~pononts or lugs are indicated at 30 with laterally ~paced series of inner lugs indicated at 31 and 32 ~ach with vertical sldewalla.
Lo~ormost oxtremities of thH lug~ 30A, 31A and 32A are with~n a plane P5 which inters~cts a plan~ P6 containing an inclined side of the heel to form an acute includ~d angle w. It w$11 be ~een that the lug~ 30-32 progre~s$ve-ly cu~hion against ground i~pact much $n the sa~e manner as the first described sole by rea~on of outer lugs 30 initially contacting the ground w~th luga 31 and 32 ~ubsequently ongaglng and deorming upon aurface contact.
Thq lateral extremlties o~ heel wodge 27, being of redu~ed ~ection, wlll also compre~s and doform upwardly relativo to the ~hoe upper to ~urther cushion the foot.
In Flgure 8, an outer aolo 35 is a~fixed to a mid-JOle 36 on an upper 1. Mid-Jol~ 36 has outwardly and downwasdly inclinod aldos 36A.1 Outer so1e lugs are lndlcated at 38 wl~h Joriss o~ inner lugJ at 40 and 41.
A pla~o P7 contain~ tho lowormost extremitios or lug~ 38 a~d 40 along one Jld~ o~ tho ~ole~ Plano P7 lntoraoct~
a aecond plane P8 com~on to mld~sole side surfaco 36A
ana d~lne~ an acut~ lnclu~d anglo 2. ThO ~ushioning actions of 1UgJ 38, 40 and 41 of ths he~l portion ~ho~n ~n Fi0ure 8 aro boliev~d obvlous in viaw of the fore-golng description of the o~rlier aesoribed cushion~ng ~097064 actions.
In Figure 9, the mid-sole is dispensed with and an outer sole 42 is provided with inclined sidewalls as at 42A extending downwardly and outwardly from a shoe upper 1. The concave lowermost or tread surface 44 of the outer sole is shown without lu~s. An arc shown as a line Ll defines the tread surface and intersects a second line L2 projected from outer sole sidewall 42A
to define an acute lncluded angle q. Ac~oxdingly, the lower side edge of outer sole 42 is of a sectional con-figuration as to be highly flexible to cushion against impact loads.
In the forms of the invention viewed in Figures 7, 8 and 9 only the heel portion of the sole is illustrated.
When applying the modified forms of the invention to the forefoot portion of the sole, it will be appreciated that the forefoot sole width will be somewhat greater as will be the tran~verse spacing of the lugs thereon as generally shown in Figure 4.
In Fi~ure 10, I show the present invention applied to a conventional shoe or boot sole wherein a separate rais~d heel at 46 is provided with a row of outer lugs 47 and inner lugs ~8 similar to the heel portion lugs 7 and 13 shown in Figure 3. In continuing similarity to that form of the invention shown in ~igures 3 through 6, the forefoot sole portion of the sole of Figure 10 include~ multiple rows of outer and inner lugs at 50 and 51 respectively.
With attention now to Figures 11 and 12 wherein -modified shoe sole construction is indicated at 2'~
parts of the modified shoe sole construction corresponding to parts earlier described in the first form of the inven-tion are identified with prime ref~r~nce nu~erals. The sole 2~ is of a shoe for ~he right ~oot.
The heel portion of the modified sole is approxi-mately the left hand half of the outer sole 6' viewed in Figure 11 and includes an outer series of resilient components or lugs 7~ each having outwardly and do~-wardly inclined walls (relative the sole major axis A) at 10~ and 11' terminating at a lowermost extremity 12'.
An inner series of resilient components or lugs 13' is offset from the sole edge and may be staggered relative to the outer series of lugs and are of lesser vertical dimension with each including downwardly inclined walls at 14~ and lS' terminating at a lower ext~emity 16~. A
plane Pl' contains lower edges 12' and 16' of the inner and outer lugs and intersects a second plane P2' common to the outer wall 10' of an outer lug 7' and an inclined side SA' of a heel wedge 5' at an acute included angle x'. A mid-sole at 4' also has downwardly and outwardly diverging sidewalls at 4A'. The heel wedge S' and mid-sole 4' accordingly have side areas of reduced section which contribute to wedge and mid-sole compressibility.
With attention specifically to Figure 12 the inside of the wearer's right foot will be associated with the left`~ha~d~-side of the Figure. Reinforcing means at 55 is shown as a web extending intermediate some of said outer lugs and serves to reinforce same against severe distortion during maximum loading. The web 55 extends about the curved heel portion of tha shoe sole construc-tion and forwardly along the inside edge thereof termin-ating forwardly approx~mately at the instep of the shoe.
~097()64 Left loot sole construction would be a mirror image o~
Figure 11.
With attention to Figure 12, it will be seen that the outer lugs 7~ are not necessaxily of uniEorm lateral dimension upon comparison of the two lu~s illustra~ed having different leng~hs indicated respectively at Dl and D~. The length of the outer lug 7~ is greater to provide additional support ~o the inside of the wearer~s foot during heel impact with a ground ~surface and hence reduce the tendency of the ankle to pronate.
~ he shoe sole material may be a ~uitable synthetic such as polyurethane, which lends itself to low cost molding operations yet provides the desirable sole ~ualities of durability and flexibility. A somewhat more costly~sole may be of rubber.
. . . -. '- ', : ' . . .
rrhe present invention relates genexally to shoes anld specifically to shoe sole constructionO The increased popularity of competitive and recreational running, witnessed in the last few years, has resulted in the introduction of a wide variety of athletic shoe designs wherein shoe upper and sole construction have embodied changes directed toward specific objectives. For example, in the prior art is shoe sole construction hav-ing ~flared~ ~ide edges extending continuously about theheel portion ostensibly for supplementing heel stability, and sole constructions with tread designs directed toward minimizing impact loads on the foot and leg.
To the extent the prior art is known, efforts have been made to provide soles for athletic shoes with the sole having cupped tread surfaces with the outer tread surfaces being continuous in order to affect a momentary seal between the sole and floor for traction purposes.
The present invention is embodiad in sole construc-tion wherein sole components are intended to provide,among other objectives, desired cushioning of the wearer's foot and leg regardless of the surface xun on to r~duce impact loads and the chance of ~oot or leg injuries to the wearer.
The present sole construction benefits from a lengthwise orientated concave shape exténding along the shoe sole with the composite surfaces of the sole tread defining the concavity. m e lower extremities o the tread are adapted to flex upwardly and outwardly rela-tive to the shoe upper upon ground contact. Accordingly,a central portion of the outer sole directly below the foot i~ supported in cantilever fashion by the tread and resiliently cushions the ~oot as the shoe comes into maximum ground contact. As greater impact loads are encountered by the heel portion of the shoe, this feature is particularly important when embodied within the heel.
The forward portion of the sole underlying the forefoot and ball of the foot, while not subjected to as great impact foxces, doe~ bear greater overall loads during runniny, which loads are resiliently supported by the forward tread portion of the present sole while import-antly pro~iding the sole flexLbility desired.
While the present invention is shown and describad in conjunction with an athletic shoe, such is not intended to imply limited use of same but rather the present sole con~truction may be further utilized in other footwear as later elaborated upon.
The present invention is embodied within shoe sole con~tructisn ~ncluding an outer serie~ of resilient tread components spaced about the sole margin each having downwaxdly converging walls terminatin~ in a lowermost extxemity, an inner series of resilient tread components offset inwardly from the sole margin and each being of a lesser hei~ht than those components of said outer ~erie9 an~d each having a lowermost extremity offset up-ward and ilnwardly rom an adjacent outer tread component extremLty, said lowermost extremities of adjacent outer and inner tread components on one side of the 901e axis being with:Ln an outwardly and downwardly inclined plane, said plane intersectin~ an upright plane containing the 3Q ~ole edge to define an acute included angle, certain outer tread components contactible firstly with a ground .
11~97064 surface and deformable to cushion impact loads, certain inner tread components subsequently contactible with the ground surface to supplement the cushioning action of t:he outer tread components, and said outer tread compon-ents when in foot biased contact with the ground being displaced outwardly past said upright plane.
In the accompanying drawing:
Figure 1 is a side elevational view of a shoe embodying the p.resent sole improvementQ;
Figure 2 is a bottom plan view of Figure l;
Figures 3 and 4 are sectional views taken along lines 3-3 and 4-4 of Figure 1 showing the transverse ; configurations of heel and forefoot sole portion~;
Figures S and 6 cQrrespond to Figures 3 and 4 and show the sole heel and forefoot sole portions in ground contact Figure 7 is a sectional view of modified sole con-struction;
Figure 8 is another sectional view of a further form of modified sole construction;
Figure 9 is a sectional ~iew of still another form o~ modified ~ole construction;
Figure 10 is a plan view of a distinct shoe sole an~ heel embodying the present invention Figure 11 is a ~ottom plan view of shoe sole con-struction embodying the pxesent invention, and Figure 12 i8 a sectional view taken along line 12-12 o~ Figure 11 rotated through ninety degrees.
With continuing attention to the drawing, the ref-eren~e numeral 1 indicates the upper of an athleticshoe customarily fabricated ~rom stitched fabric or ~(~97064 leather pieces. The upper forms no part of the present invention and, accordingly, further details of same are superfluous.
The present sole construction is indicated generally at 2 and includes a tread or that portion of the sole coming into ground con~act. Customarily, athletie shoes of the type shvwn have sole including an insole 3, a mid-sole 4, a resilient heel wedge 5 and an outer sole 6.
The upper 1 and mid-sole 4 are typically bonded to one another by an adhesive. In athletic shoes it is further typical to form the heel portion of outer sole 6 integral with the ~orefoot portion of the sole with the combined portions constituting the shoe sole tread.
With attention first to the heel portion of the sole, approximately the left hand half of the sole as viewed in Figure 2, said heel portion, as typically shown in Figure 3, includes an outer series of resilient compon-ents or lugs 7 each having outwardly and downwardly inclined walls (relative the sole major axis) at 10 and .
11 terminating at a lower extremity or edge 12. Wall 11 constitutes a lug bottom wall. An inner series of resil-ient components or lugs 13 is ofset from the sole edge and staggered relative the outer ~eries of components and is of les~er vertical dimension with each including ~downwardly inclined walls at 14 and 15 terminating at a lower extre~ity or edge 16. A plane at Pl contains lower edges 12 and 16 of the inner and outer lugs of Figure 3 and intersects a second plane P2 common to the outer wall 10 of an outer lug 7 and an inclined side 5A
of heel wedge 5. While the ter~ "planel~ is used in the foregoing description, it will ~e understood that wall surface 10 ~ay be other than planar as may inclined walls 11 and 14, 15 of lugs 7 and 13. The intersection of Pl and P2 defines an acute included angle at x~
With attention now to Figure ~, mid-sole 4 is shown sui*ably secured to the underside of upper 1 as by an adhesive and serves to receive the forefoot portion (the right hand half of Figure 2) of outer sole 6~ Outer sole 6 is provided with an outer row or series of tread com-ponents or lugs 17 each having an outer wall 18 and a bottom wall 20 converging at a lowexmost extremity or edge 21. Inner rows or series of tread components or lugs are indicated at 22 and 23 with the lugs of each row having wall surfaces generally corresponding to those wall surfaces of outer lugs 17 but of a lesser vertical distance resulting in lugs 22-23 being of lesser overall height. Lugs 22 and 2~ terminate downwardly in lowermost extremities 24 and 25 within a plane P3 which plane intersects a plane P4 containing outer lug wall 18, at an acute angle at y. While plane P4 is shown as being vertical, the same is preferably outwardly inclined from the side 4A of mid-sole 4.
Now with attention to Figure 5, showing heel pOrtiQn of the present sole construction i~ foot biased contact with a ground surface S, the lugs 7 are shown displaced ou~wardly and compressed from their unbiased position of Fi~ure 3. Subsequently, inner series of lugs 13 are also compressed under foot pressure, deforming upon con-tact with the ground surface. Importantly, lower edges 12 initially contact the ground surface and flex to cushion initial ground contact with their compression and outward displacement contributing to the cushioning ~097064 ef~ect. Supplementin~ the action of lugs 7, and after dlisplacement of same, inner lugs 13 also yield under heel pressure to provide a second stage of shocX or impact absorption.
The ground engagement and lateral displacemen~ of outer lugs 7 also contributes toward heel stability.
Further, non~uniform displacement and compression of the sole lugs accommodates asymmetrical sole loading as occurs when the runner executes a change of direction.
The reduced section side areas of resilient heel wedge 5 and mid-sole 4 will also be, of course, subjected to some degree of compression during ground contact.
In a similar manner, outer lugs 17 of the forefoot portion of the sole are initially displaced upon contact with ground surface S per Figure 6. Subsequent to initial displacement of outer lugs 17, the inner series of lugs 22 and 23 come into progressive (in a lateral direction) contact with the ground to pro~ide supplementary or secondary cushioning to the forefoot beyond t~at already provided by the flexing of outer lugs 17. -`
Forefoot lugs 17, 22 and 23, in addition to cushion-ing against jarring impact, serve to provide a tread pattern highly adaptable to flexibly encompass rocks, projections and other small obstructions on the ground surace without significantly effecting foot-to-ground relationship or signi~icantly diminishing tread traction~
Further, the lugs provide excellent traction and permit independent degrees of lug 1exing and compression, advantageous during execution of changes of direction by the wearer.
Figures 7, 8 and 9 show sectional views of modified sole con~tructions correcponding to the typical heel portion sectional vlew of Figur~ 3 of the first de~cribed form of the inv~ntion. In Figure 7, an outer ~ole i8 indicated at 26 affixed in a suitable ~anner to a heel wedge 27 with a ~id-sole ind~cated at 28. me heel wedge has outwardly and aownwardly sloped sidos 27A for greater resiliency. Outer 801e co~pononts or lugs are indicated at 30 with laterally ~paced series of inner lugs indicated at 31 and 32 ~ach with vertical sldewalla.
Lo~ormost oxtremities of thH lug~ 30A, 31A and 32A are with~n a plane P5 which inters~cts a plan~ P6 containing an inclined side of the heel to form an acute includ~d angle w. It w$11 be ~een that the lug~ 30-32 progre~s$ve-ly cu~hion against ground i~pact much $n the sa~e manner as the first described sole by rea~on of outer lugs 30 initially contacting the ground w~th luga 31 and 32 ~ubsequently ongaglng and deorming upon aurface contact.
Thq lateral extremlties o~ heel wodge 27, being of redu~ed ~ection, wlll also compre~s and doform upwardly relativo to the ~hoe upper to ~urther cushion the foot.
In Flgure 8, an outer aolo 35 is a~fixed to a mid-JOle 36 on an upper 1. Mid-Jol~ 36 has outwardly and downwasdly inclinod aldos 36A.1 Outer so1e lugs are lndlcated at 38 wl~h Joriss o~ inner lugJ at 40 and 41.
A pla~o P7 contain~ tho lowormost extremitios or lug~ 38 a~d 40 along one Jld~ o~ tho ~ole~ Plano P7 lntoraoct~
a aecond plane P8 com~on to mld~sole side surfaco 36A
ana d~lne~ an acut~ lnclu~d anglo 2. ThO ~ushioning actions of 1UgJ 38, 40 and 41 of ths he~l portion ~ho~n ~n Fi0ure 8 aro boliev~d obvlous in viaw of the fore-golng description of the o~rlier aesoribed cushion~ng ~097064 actions.
In Figure 9, the mid-sole is dispensed with and an outer sole 42 is provided with inclined sidewalls as at 42A extending downwardly and outwardly from a shoe upper 1. The concave lowermost or tread surface 44 of the outer sole is shown without lu~s. An arc shown as a line Ll defines the tread surface and intersects a second line L2 projected from outer sole sidewall 42A
to define an acute lncluded angle q. Ac~oxdingly, the lower side edge of outer sole 42 is of a sectional con-figuration as to be highly flexible to cushion against impact loads.
In the forms of the invention viewed in Figures 7, 8 and 9 only the heel portion of the sole is illustrated.
When applying the modified forms of the invention to the forefoot portion of the sole, it will be appreciated that the forefoot sole width will be somewhat greater as will be the tran~verse spacing of the lugs thereon as generally shown in Figure 4.
In Fi~ure 10, I show the present invention applied to a conventional shoe or boot sole wherein a separate rais~d heel at 46 is provided with a row of outer lugs 47 and inner lugs ~8 similar to the heel portion lugs 7 and 13 shown in Figure 3. In continuing similarity to that form of the invention shown in ~igures 3 through 6, the forefoot sole portion of the sole of Figure 10 include~ multiple rows of outer and inner lugs at 50 and 51 respectively.
With attention now to Figures 11 and 12 wherein -modified shoe sole construction is indicated at 2'~
parts of the modified shoe sole construction corresponding to parts earlier described in the first form of the inven-tion are identified with prime ref~r~nce nu~erals. The sole 2~ is of a shoe for ~he right ~oot.
The heel portion of the modified sole is approxi-mately the left hand half of the outer sole 6' viewed in Figure 11 and includes an outer series of resilient components or lugs 7~ each having outwardly and do~-wardly inclined walls (relative the sole major axis A) at 10~ and 11' terminating at a lowermost extremity 12'.
An inner series of resilient components or lugs 13' is offset from the sole edge and may be staggered relative to the outer series of lugs and are of lesser vertical dimension with each including downwardly inclined walls at 14~ and lS' terminating at a lower ext~emity 16~. A
plane Pl' contains lower edges 12' and 16' of the inner and outer lugs and intersects a second plane P2' common to the outer wall 10' of an outer lug 7' and an inclined side SA' of a heel wedge 5' at an acute included angle x'. A mid-sole at 4' also has downwardly and outwardly diverging sidewalls at 4A'. The heel wedge S' and mid-sole 4' accordingly have side areas of reduced section which contribute to wedge and mid-sole compressibility.
With attention specifically to Figure 12 the inside of the wearer's right foot will be associated with the left`~ha~d~-side of the Figure. Reinforcing means at 55 is shown as a web extending intermediate some of said outer lugs and serves to reinforce same against severe distortion during maximum loading. The web 55 extends about the curved heel portion of tha shoe sole construc-tion and forwardly along the inside edge thereof termin-ating forwardly approx~mately at the instep of the shoe.
~097()64 Left loot sole construction would be a mirror image o~
Figure 11.
With attention to Figure 12, it will be seen that the outer lugs 7~ are not necessaxily of uniEorm lateral dimension upon comparison of the two lu~s illustra~ed having different leng~hs indicated respectively at Dl and D~. The length of the outer lug 7~ is greater to provide additional support ~o the inside of the wearer~s foot during heel impact with a ground ~surface and hence reduce the tendency of the ankle to pronate.
~ he shoe sole material may be a ~uitable synthetic such as polyurethane, which lends itself to low cost molding operations yet provides the desirable sole ~ualities of durability and flexibility. A somewhat more costly~sole may be of rubber.
. . . -. '- ', : ' . . .
Claims (17)
1. A shoe sole, which comprises:
a lower surface having a central portion and a peripheral portion;
a plurality of tread members disposed about said peripheral portion of said lower surface and inclined down-wardly and outwardly from said peripheral portion of said lower surface, said tread members (a) being such that at least their lower extremities are urged resiliently laterally outwardly with respect to said central portion upon foot induced impact with the ground and (b) extending integrally from said lower surface for supporting said lower surface in a cantilever fashion, and (c) each including a lower wall extending downwardly and outwardly from a first position on said lower surface located inwardly of an outer edge of said lower surface and a side wall extending downwardly and outwardly from a second position on said lower surface closer to said outer edge than said first position to converge toward said lower wall at an area that is resi-liently urged laterally outwardly upon foot induced impact with the ground.
a lower surface having a central portion and a peripheral portion;
a plurality of tread members disposed about said peripheral portion of said lower surface and inclined down-wardly and outwardly from said peripheral portion of said lower surface, said tread members (a) being such that at least their lower extremities are urged resiliently laterally outwardly with respect to said central portion upon foot induced impact with the ground and (b) extending integrally from said lower surface for supporting said lower surface in a cantilever fashion, and (c) each including a lower wall extending downwardly and outwardly from a first position on said lower surface located inwardly of an outer edge of said lower surface and a side wall extending downwardly and outwardly from a second position on said lower surface closer to said outer edge than said first position to converge toward said lower wall at an area that is resi-liently urged laterally outwardly upon foot induced impact with the ground.
2. A shoe sole according to claim 1 wherein said second position is located approximately at said outer edge of said lower surface.
3. A shoe sole according to claim 1 wherein said side wall is substantially planar and forms an obtuse angle with that portion of said lower surface from which said side wall extends.
4. A shoe sole according to claim 1, 2 or 3 wherein said tread members have a vertical section approxi-mating an obtuse triangle having a lowermost apex that extends laterally beyond said outer edge of said sole.
5. A shoe sole according to any one of claims 1 to 3 wherein said tread members have a vertical section approximating a triangle having two exposed sides that extend downwardly and outwardly from said lower surface of said sole to an apex that is urged resiliently laterally outwardly upon foot-induced impact with the ground.
6. A shoe sole according to claim 1 further comprising a plurality of lug components extending from said lower surface and being positioned inwardly of said tread members.
7. A shoe sole according to claim 6 wherein each of said lug components converges downwardly to lower ex-tremities adapted to be urged resiliently laterally out-wardly upon foot induced impact with the ground.
8. A shoe sole according to claim 6 or 7 where said lug components are integral with said lower surface and have a height less than that of said tread members.
9. A shoe sole according to claim 6 or 7 com-prising a plurality of further lug components extending from said lower surface in the forefoot region thereof, said further lug components being positioned inwardly of the first mentioned lug components.
10. A shoe sole according to claim 1, wherein said lower surface includes a heel area having an inside portion and an outside portion, the lateral dimensions of said tread members at said inside and outside portions being non-uniform for reducing ankle pronation.
11. A shoe sole according to claim 10 wherein the lateral dimension of said tread members on said inside portionof said heel area is greater than the lateral dimen-sion of said tread members on said outside portion of said heel area.
12. A shoe sole according to any one of claims 1 to 3 wherein said lower surface includes a heel area having a web on said peripheral portion extending between said tread members for reducing ankle pronation.
13. A shoe, which comprises:
an upper;
a resilient midsole connected to said upper; and a sole positioned below and fastened to said midsole, said sole comprising a lower surface having a central portion and a peripheral portion; and a plurality of tread members disposed about said peripheral portion of said lower surface and inclined downwardly and outwardly from said peripheral portion of said lower surface, said tread members (a) being such that at least their lower extremities are urged resiliently laterally outwardly with respect to said central portion upon foot induced impact with the ground, and (b) extending integrally from said lower surface for supporting said lower surface in a cantilever fashion, and (c) each including a lower wall extending downwardly and outwardly from a first position on said lower surface located inwardly of an outer edge of said lower surface and a side wall extending down-wardly and outwardly from a second position on said lower surface closer to said outer edge than said first position to converge toward said lower wall at an area that is resiliently urged laterally outwardly upon foot induced impact with the ground.
an upper;
a resilient midsole connected to said upper; and a sole positioned below and fastened to said midsole, said sole comprising a lower surface having a central portion and a peripheral portion; and a plurality of tread members disposed about said peripheral portion of said lower surface and inclined downwardly and outwardly from said peripheral portion of said lower surface, said tread members (a) being such that at least their lower extremities are urged resiliently laterally outwardly with respect to said central portion upon foot induced impact with the ground, and (b) extending integrally from said lower surface for supporting said lower surface in a cantilever fashion, and (c) each including a lower wall extending downwardly and outwardly from a first position on said lower surface located inwardly of an outer edge of said lower surface and a side wall extending down-wardly and outwardly from a second position on said lower surface closer to said outer edge than said first position to converge toward said lower wall at an area that is resiliently urged laterally outwardly upon foot induced impact with the ground.
14. A shoe according to claim 13 wherein said midsole includes a reduced section side area positioned above said tread members which is compressed upon ground impact for providing additional resiliency and shock-absor-ption.
15. A shoe according to claim 13 further compris-ing a resilient heel wedge positioned in the area of the heel portions of said midsole and said sole, said heel wedge having a reduced section side area positioned above said tread members which is compressed upon ground impact for providing additional resiliency and shock-absorption.
16. A shoe according to claim 13, wherein said midsole has a downwardly and outwardly inclined outer wall, said tread members each including a side wall extending downwardly and outwardly from an outer edge of the sole so as to be substantially colinear with said inclined outer wall of said midsole.
17. A shoe according to claim 13 wherein said midsole has a downwardly and outwardly inclined outer wall, said tread members each including a side wall extending downwardly and outwardly from an outer edge of the sole so as to be substantially colinear with said inclined outer wall of said midsole and wherein said heel wedge also has a downwardly and outwardly inclined outer wall which is substantially colinear with said inclined outer wall of said midsole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000372211A CA1147145A (en) | 1977-11-21 | 1981-03-03 | Shoe sole construction |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US85348277A | 1977-11-21 | 1977-11-21 | |
| US853,482 | 1977-11-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1097064A true CA1097064A (en) | 1981-03-10 |
Family
ID=25316145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA315,733A Expired CA1097064A (en) | 1977-11-21 | 1978-11-02 | Shoe sole construction |
Country Status (2)
| Country | Link |
|---|---|
| AU (2) | AU522689B2 (en) |
| CA (1) | CA1097064A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1982003315A1 (en) * | 1981-04-03 | 1982-10-14 | Jerry D Stubblefield | Basketball shoe sole |
| US4404759A (en) * | 1980-08-27 | 1983-09-20 | Puma-Sportschuhfabriken Rudolf Dassler Kg | Athletic shoe, especially jogging shoe |
| US4546556A (en) * | 1981-04-03 | 1985-10-15 | Pensa, Inc. | Basketball shoe sole |
| CN103260451A (en) * | 2010-10-07 | 2013-08-21 | 格莱登制锁股份公司 | Outsole |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3810930A1 (en) * | 1987-05-27 | 1988-12-08 | Cohen Elie | Shoe sole arrangement with a midsole which has compressible bridging elements and elements preventing a deflection |
-
1978
- 1978-11-02 CA CA315,733A patent/CA1097064A/en not_active Expired
- 1978-11-21 AU AU41774/78A patent/AU522689B2/en not_active Expired
-
1985
- 1985-03-12 AU AU39777/85A patent/AU3977785A/en not_active Abandoned
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4404759A (en) * | 1980-08-27 | 1983-09-20 | Puma-Sportschuhfabriken Rudolf Dassler Kg | Athletic shoe, especially jogging shoe |
| WO1982003315A1 (en) * | 1981-04-03 | 1982-10-14 | Jerry D Stubblefield | Basketball shoe sole |
| US4449307A (en) * | 1981-04-03 | 1984-05-22 | Pensa, Inc. | Basketball shoe sole |
| US4546556A (en) * | 1981-04-03 | 1985-10-15 | Pensa, Inc. | Basketball shoe sole |
| EP0206439A2 (en) * | 1981-04-03 | 1986-12-30 | STUBBLEFIELD, Jerry D. | An outer sole for a basketball or like shoe |
| EP0206439A3 (en) * | 1981-04-03 | 1988-08-31 | STUBBLEFIELD, Jerry D. | An outer sole for a basketball or like shoe |
| CN103260451A (en) * | 2010-10-07 | 2013-08-21 | 格莱登制锁股份公司 | Outsole |
| US9439474B2 (en) | 2010-10-07 | 2016-09-13 | Glide'n Lock Ag | Outsole |
Also Published As
| Publication number | Publication date |
|---|---|
| AU3977785A (en) | 1985-09-12 |
| AU4177478A (en) | 1979-05-31 |
| AU522689B2 (en) | 1982-05-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |