CA1115950A - Sole for sports shoes, particularly for shoes used for long-distance running on hard tracks - Google Patents
Sole for sports shoes, particularly for shoes used for long-distance running on hard tracksInfo
- Publication number
- CA1115950A CA1115950A CA344,544A CA344544A CA1115950A CA 1115950 A CA1115950 A CA 1115950A CA 344544 A CA344544 A CA 344544A CA 1115950 A CA1115950 A CA 1115950A
- Authority
- CA
- Canada
- Prior art keywords
- sole
- recess
- shoes
- heel
- supporting members
- 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
Links
Abstract
TITLE OF THE INVENTION
SOLE FOR SPORTS SHOES, PARTICULARLY FOR
SHOES USED FOR LONG-DISTANCE RUNNING ON
HARD TRACKS
ABSTRACT OF THE DISCLOSURE
The invention relates to an outsole for sports shoes, particularly for shoes used for long-distance running on hard tracks.
The outsole consists of a soft elastically flexible material, prefer-ably plastics material, and is thickened rearwardly in wedge formation.
In the region of the heel tread surface of the outsole, there is provided a recess which is open towards at least one side edge of the sole and in which a resilient elongate supporting member is insertable.
Preferably a plurality of supporting members are inserted in corres-ponding recesses adjacent one another. The supporting members are replaceable and permit the effective sole flexibility in the region of the heel tread surface to be adapted to the individual require-ments of the runner and the track (Fig. 1).
SOLE FOR SPORTS SHOES, PARTICULARLY FOR
SHOES USED FOR LONG-DISTANCE RUNNING ON
HARD TRACKS
ABSTRACT OF THE DISCLOSURE
The invention relates to an outsole for sports shoes, particularly for shoes used for long-distance running on hard tracks.
The outsole consists of a soft elastically flexible material, prefer-ably plastics material, and is thickened rearwardly in wedge formation.
In the region of the heel tread surface of the outsole, there is provided a recess which is open towards at least one side edge of the sole and in which a resilient elongate supporting member is insertable.
Preferably a plurality of supporting members are inserted in corres-ponding recesses adjacent one another. The supporting members are replaceable and permit the effective sole flexibility in the region of the heel tread surface to be adapted to the individual require-ments of the runner and the track (Fig. 1).
Description
5~
The invention relates to a sole for sports shoes, especially for shoes usea for lon6~distance rr~ning on hard tracks, co~posed of elastically flexible material, prefera~ly ~lastics material, and thickened rearwardly from the shank to fo~n a heel wedge.
~or many years it has been conventional to provide r ~ling shoes and also training shoes for running races wit~ a rounded-off portion at the heel, the roundea-off`portion extending right into the sole to ensure a unifo~m rollin~-off process for the foot and thereby increase the perfor~ance of the runner. ~his rounded-off portion has produced the desired result in contests held on plas-tics tracks, particularly short-distance and medium-clistance races, because in these disciplines the runners make xelatively fax forward contact with the sole surface by extending the ~oo-t with a view -to increasirlg the perfor~ance, so that durin6 the rollin~off process the heel i.s not fully loaded. ~owe~er, it has been found that in long-distance races in which the force of the ~mner does not usua].ly suffice over the full distance so -that the heel does not ~ake contact under full load, the said rounded-off portion has a detximental effect and in an extreme case can even result in overloadin~ of the heel. Such detri-mental effects are particularly evident in long-distc~nce races SUC}l as ~arathon races which lead over relatively long distances and therefore include stretohes along ordinary roads. ~&len there is heel contact with the ro~ded-off portion of the sole, the bard road surface CalSeS the elasticity of the sole to be incompletely utili~ed and the l~nner is subjected to shocks in the regrion of the heel s~ l bone that lead to premature tiring and a marked drop in performance.
Similar considerations apply to running or training shoes used by inexperiencea runners, for example within the scope of slimming exexcises, because such persons generally also fail to have special kno~lledge about the technique of running to t~ke the aforementioned problems into account.
To damp vibrations and shocks occuring d~ring running,particularly on hard tracks, various solutions have already been proposed. ~or example, a sports shoe of the aforementioned kind is known in which an air cushion chamber is formed in the heel region of the sole and closed by a valve. ~his air cushion chamber is suppesed to absorb and damp vibrations and i~p~cts elastically by pressure deformation.
~ne provision of comparatively thick soles of very soft flexible material has the same aim in mind. However, both Icnown constructions haYe a significant disadvantage in that, in order to achieve adequate dc~mping, they are socompressible in thehee] region ~f the sole that the runner has a floating feeling imparted to him and loses the feel of the -track which is necessary to develop his best perfol~ance. Indeed, premature tiring of the r~ mer is likely when using an excessively soft sole which no doubt has a good damping effect for i~pacts.
Thè invention therefore has the object of providing a sports Æhoe sole in which, on the one hand, -there is substantial damping of vibrations and impacts occurring during running particularly on hard tracks and the ~lhealthy effects on the heel are thereby avoided l~ithout thereby affecting the perforrlcq~lce of the ~ner. However, at the same ti~e it should be possible to employ one and the same sole ~,1~, consisting o~ relatively soft material for this purpose or to adapt the sole to different ground conditions, for example forest soil or asphalt.
According to the invention, a sole Eor a sports shoe has a heel wedge of yielding material having at least one recess extending transversely to the longitudinal axis of the sole and substantially parallel to the tread face, the recess being open at least at one side edge of the heel wedge, at least one supporting membex of elastically bendable material being replaceably inserted in said recess, said bend-able material being of greater hardness than said soft yield-ing material of the heel wedge to increase the overall hard-ness of the sole, and securing means for securing the support-ing member in said recess.
The invention is thexefore based on the considera-tion that the selection of appropriate supporting members will make it possible to change the softness of the sole itself. In this way, adaptation to the wishes of the runner is possible without difficulties, regardless whether with respect to his weight or the softness of the sole, in some cases also taking the ground properties into consideration.
If relatively stiff supporting members are used, the outsole seems to be given a comparatively high hardness. On the other hand, when using supporting members which are com-paratively easily resillently deformable, the increase in the apparent sole hardness is not so high. ~or example, - 4a -the sole itself may be of foam material, e.g. polyurethane foam having a comparatively low Shore hardness of, for example, about 35. Depending on the p:roperties of the supporting members that are used, the apparent Shore hard-ness of the sole can then be considerably increased, e.g.
to a maximum of 85. The supporting members can be made of all possible materials. For example, PVC, polye-thylene ~ . _ _ . .
: .
' polyamide and especially nylon are sui-table. ~[owever, it would also be possible to make the supportin~ members of suitable rl~etc~l, e.g.
an appropriate sheet metal. The application of the supportin~ members to the sole is simple because the recess :is laterally open. Genercilly it is only required to insert the supportin~r members appropriately from the side. By selecting a suitable colour, the weight range for which a particular supporting member is intended can then be made vi-sible. It is~for example,conceivable to let th~colour become darker with an increase in weightof the runner for whom they ~re deternined.
It iB favourable to make the supportingr members in the for~
of hollow me~bers of elastically bendable material in order thereby to save materic~l and also facilitate simple adaptation to a particular load.
q'o adapt or change the sprin~ properties, it is also poEsible to shape the hollowmember accordingly, inparticular toprovide thehollow m~mber with slots,ribs orlike elements,~her~by the bendingflexibility is alter~d.
A particularl~ simple but also desirable const~lction for the sole according to the in~ention resides in that the heel wedge is provided with a plurality o$ parallel transverse bores in which substantially tubt~ar supportin~ members a~einsertable. It will be kno~n that, havin~ regard to their wall thickness, tubes possess -the highest relative strength ~nd therefore use the least possible matelial. In adaition, no particular orien-tation o~ the -hlbulc~r supporting membexs is necessary in the recess One adv.~nta$e of usin6 a plur~lity of -tubular supporting m~lbers i3 ~lso that under oertain circumstances the hardness of the ~ole cc~n be differently selected in 5~5~11 the re~ion of different supporting members by insertin~,r ~ifferent tubular supporting members in the bores.
The insertion of the tu'bular supporting rnernbers i.s e~sy when the transverse bores are open at both ends and the tubular 5 supporting members are tran~versely sub divided in-to two parts which are each insertable in -the associated transverse bore from opposite side edges of the sole cmd can be intercoupled near their inner ends in the opera-tive position.
However,the supportin~ members could be differently constructed~ Tllus, 10 the supporting members could be in one piece a~d, as a supporting element, carry at least at one end c~n elastic ring which can be snapped into a circumferential groove in the end portion of the supporting members and at their other end carry a collar or likewise an elastic ring which can be snapped into a circ unferential groove.
15 If transverse bores are provided and the suppor-ting members are to be relatively soft, i~e. the sole is to be used by persons of low weight, it is for example conceivable to use a gpiral supporting menber of plastics mate~ial or metal. ~lch a supporting member cculd then be unifc~ y s¢rewed into the transveræe bore from the side. lilthoucgh 20 a plurali ty of parallel supporting members will preferably ofte~ be provided in the sole, it would be conceivable for certain applicationa to provide only one sui tably ~haped supporting member ~/hich co~ld possibly also be lnserted in a r~ceC~s f`xom the heel end of the ~ole rather than from the side but in that case suitable prcvision muæt be 25 made for securely closing the reoess.
~5~5~
Gther feat~es, details and acive~t~;es of the inverltion will become evident from the follo~ing description of pLeferred exa~ples ith reference to tne drawing, ~ erein:-Fig. 1 is a par-t-section~l plat;l view of a s01~3 accor~inOr to the invention;
~ g. 2 is a side elevation of the l(-`ig. 1 solo;
Fig. ~ shows to a ver.y much enlar~ecl <~cc~ e the inner ends of t~ro tube portions ~rhich fo~ the su~porting me.-.~ber, tne latter being modified compared with that of ~
Eig. 4 is an ~mderplan of ~'ig. };
I~g. 5 is a fr~ ntary side el~va--oll of a Modified construc-tion and ~ ig. ~ is an enl ~ged fra~len-tary vie~r ot a supporting me~lber used in the sole of ~'ig. 5.
'L'he sole shown in ~'igs. 1 and 2 consists of an actual outsole 1 of wear-resistan-t material, e.g. v~cc~ni~ed n1bber, and a portion 3 fo~mirlg the heel wedge 2 of relatively sof-t material, e.g. polyurethane foam with a Yhore hardness ofabout 35. The heel portion 3 i9 securely connected to the outsole 1 by appropriate means, e.g. adhesive. 'rhe outsole 1 in the illustrated example is also provided with studs 4.
In the region beneath the contact surfaoe 5 for the heel, the illustrated sole is provided with three transverse bores 6 extending from one side ed~e 7 of the sole to the other 3ide edge ~, the trans~
ver~e bores 6 each terminating in the vicinity of aepression~ 9 in the side edges 7, a of tha sole. Incidentally, a correspondin~
~ . .
~ ' .
S~
depression 10 is also provided at the re,lL end of the sole, In the illustrated embodiMent5 tubular suppo t;in.,r t~Lembers 11 are inserted in the respective tr~nsverse bores ~ d these consi st of a sui table plastics t~aterial, e.g. P'rC, pol,~eth~ylene, poly~2ide 5 or particularly nylon. I~e use of ~netal as a Illaterial f'or the supporting members 11 is also conceivable.
Each supporting me~nber 11 consists of two hlbe portions 12 and 13 of ~,rhich the outer ends each have a~l annular I~lange 14 abutting the side waLl 7 or 3 of the wedge me~Qber 3 in -the region of the 10 depression 9.
The inner ends of the tube portions 12, 13 are constructed so that they can be intercoupled~ For this purpose the one tube portion 12 has a reduced inner end scction 15 '~Jhi.C:i r~n~ breJ inside the second -tube por-tion 1~;. This re~',uceo er!d -soction 15 is provided 1~ on the outside l1~ith an annular bead 16 ~hich, ~`or locking the tube portions 12, 13, is enæagreable cluring insertion of the reduced end section 15 of` the tube portion 12 into -the lrmer end cf the tube portion 11, with c~nnular g~ooves 17 provided on the inner waLl of the tube portion 11, the annulax bead 16 bein~ eng,c~ed in a suitable 20 annula.r groove 17 depending on the desi ~cd length of' the supporting member 11.
In the tt/o left-hand ~upporti2l,~,r memb~ls 11 ot` I~'ig. L, -the .umul~: be.-ld 1~'; is engaged in the second .~mu] ar ~jroo~re a~ vie~red from tlle inner end of the tube portion L3, t~heleas ror tlle ri~ht-hand 25 supporting member the loc~ g takes place itl tne t'ourth ~nula-r 6~oove wheleby the ri~ht-hand ~upportin~; rnernber as a t~ho]e is considerably ' ,' ' shorter ~rlich corresponds to tne n~rrower ~l~lth of the sole or the ed~;e portion 3 at this poin-t.
'rO insert the suppor-tingllLeillber 11, ti~e tube pOrGions 12 or 13 are introduced in the transverse 'bores u froLrl-the respective ends thexeof and then pressed into each other 90 strongly ;rhile inter-~loclcing the c~nnula~ bead 16 and the appropriate a~ltlUIc~ groove 17 un-til a proper seating of the tube portions 12, 13 ha~ been achieved in the transverse bore G with the annular flanga 14 abutting the side wall 7, ~.
lf the supportin~ members 11 are -to be replaced, the tllbe portions 129 13 must be pulled apar-t and out of the respective trans-verse bore. E'or this purpose, the hlbe portions 12, 13 may be provided with suita~le holding elemen-ts, e.g. apertures or the like which are no-t visible in the drawing. If'-the annul~r f'li--mge 1~ projects suffi-ciently beyond the periphery of the tube por-tions 12,13, the latter can also be g~ripped a-t the a~mular flange 14 itself.
~ppropriate tubular suppor-ting rrl~rrlbers-~ 11 are inserted depend-ing on the wei~rh-t of the user of the ~hoes a~d -the h~(~ess of' the sole desired by hirrl. ~he ~hardness~ of the supportin~r mer~'bers 11, i.e.
-their deformability, can be set by selecting a sui-table material, by varying the wall -thickness and possibly also 'by ilppropliate shaping.
~'or exr~lple, the ~hardness~ can bereduced by applying 310ts, which collld also extend spirc~ . An increase in the ~hardnec3s~ can for exaJrlple be acilieved by mec~n~ of web~, ribs or the like.
l~'igs. 3 and ~ illustrate a different embodiment of' the means fo-r couplirlg the inner ends of the tube portions 12~ or 13~. In the s~
~ s. 3 c~d ~ ernbodilnent, one ~Ibe porl;ivn 12' i- a~c~in reduced at its inner encl 15' so thQt it cc~ be -pushed in-to ~the innel end of the other tube por-tion 13~.
~he coupling mec~ns 'bet~Jeen -the two -tube por-tions 12', 1~' are in the nature of a bayonet couplin~. I'or this pu~pose -the reduced end section 15' of` the -tube portion 12' comprises -two dia-me-txally opposed axi31 slots 1.3 from which radial locki.ng notches 19 ex-tend in the same circumferenticil ciirection. ~lese locking notches 19 ser~e as lockin~ elerlents for a pin 21 which passes transversely through the o-ther tube por-tion 13' neal its inner end 20 and ~hich may be of metal if the tube portion 13' is of plas-tics mate~ic~l.
~ or lockin~ purposes, the inner ends of the tube por-tions 121, 13' in the Fig~. 3 c~nd ~ er~bodiment c~e pushed into each other suf:E`i-ciently far c~d, by turning -the tube portions 1'~, 13' with respect to each other, the pin 21 is then introduced in one ~ the locking notch pairs 19 ~Ihich e~tend laterally from the c~ial slo-ts la, whereby locking is ac~ieved. Since a~ain a plurc~ity of locking notches 19 is provided in different axial positions~ the tube portions 12', 13l can be intercoupled in diff`erent c~xlal positions whereby a compensa-tion in length is likewise possible in the rnanner described inrelation to li'ig~ 1.
In the l~i~s. 3 and (; embodi.~nent, -the tube portions 12', 13~
should be provided a-t their outer ends with suitable engc~ge~nent means ~or turnin~ tools. I'or ex~np].e, the;r outer erld co~d be equipped with a slot for c~pplying~ a screwd.river. Ano-ther possi'bility would be to make -the head at the outer end poly~oncil on the insi~e or outside.
.S~5~
- l:L -In the same way as for the outsole acco:rdingr to ~igs. 1 to 4, three transverse bores f, are provided in the re~ion of the contact surf'ace 5 for the heel in the case of ~L~ . 'j, the bores 6 extending fxom one side edgre 7 of the sole to the ot,her side e~ge. '~he trans-verse bores 6 are disposed ln the vicinity of the depressions 9 ofthe side edges of the sole and te~inate therein.
Tubular supporting members 11' are insertea in the transverse bores 6, one of these being shown in ~g. G~ The supportirlg member 11~ is a length of a plastics tube of corrugated longitudinal section and thus provided over its entire length with circu~ferential grooves.
T~le length of the -tube is such that, after it has been inserted in the transverse bore 6, both its ends 23 or 2~ still project so far from the apertures of the transverse bores ~ that at least one circumferen--tiaL ~rroove 22 is disposed completel,y beyond -the trc~svelse bores ~.
An elastic ring 25a or 2~b of ~ubber or the like is snapped into this circumferentiaL groove 22 so that it is tigntly seated in the base of the groove and is held by the groove 22. ~ig. o illustra-te~; two different embodiments 25a and 25b for the ring cross-section. It will be evident that any desired other fo~s oL elas-tic rings can be selected to fulfil the sa~e purpose. The on:Ly thing that is necessary is that even after snapping in the side f`aces of` the ring 25a, b still project sufficiently far beyond t;he circumferen-tial sl~rface of the tube to achieve arl abutment and thus a suppoxting ei'fect at the lateral edges Or the sc~le.
3efore insertion in the trc~n,sverse bores 6, the tube 11l can be provided with a / aæent such as Vaseline which accumuLates at lubricating 5~
the bottom of at least a few grooves 22. In tlLis .w~y insertion of the tube is VeLy much simplified.
Departures can be made with:in the scope of the inven-tion fro~ the shape of the grooves as well as from -the illustrated oircu-lar cross-section of the tube 11~. lt is also sufficient to provide the groo~es merely in the two end portions 2~ OI` 2~ on which -the rings 25a, b aro placed. l;~rther~ it is possible to provide one end of the tube 11~ with a colla-r projecting beyond the exterior of the rollers 22, for exc~nple by lateral fusion~ so tha-t an elastio ring 10 25a~ b need be snapped only onto one end 23 or 2~i-:, :
The invention relates to a sole for sports shoes, especially for shoes usea for lon6~distance rr~ning on hard tracks, co~posed of elastically flexible material, prefera~ly ~lastics material, and thickened rearwardly from the shank to fo~n a heel wedge.
~or many years it has been conventional to provide r ~ling shoes and also training shoes for running races wit~ a rounded-off portion at the heel, the roundea-off`portion extending right into the sole to ensure a unifo~m rollin~-off process for the foot and thereby increase the perfor~ance of the runner. ~his rounded-off portion has produced the desired result in contests held on plas-tics tracks, particularly short-distance and medium-clistance races, because in these disciplines the runners make xelatively fax forward contact with the sole surface by extending the ~oo-t with a view -to increasirlg the perfor~ance, so that durin6 the rollin~off process the heel i.s not fully loaded. ~owe~er, it has been found that in long-distance races in which the force of the ~mner does not usua].ly suffice over the full distance so -that the heel does not ~ake contact under full load, the said rounded-off portion has a detximental effect and in an extreme case can even result in overloadin~ of the heel. Such detri-mental effects are particularly evident in long-distc~nce races SUC}l as ~arathon races which lead over relatively long distances and therefore include stretohes along ordinary roads. ~&len there is heel contact with the ro~ded-off portion of the sole, the bard road surface CalSeS the elasticity of the sole to be incompletely utili~ed and the l~nner is subjected to shocks in the regrion of the heel s~ l bone that lead to premature tiring and a marked drop in performance.
Similar considerations apply to running or training shoes used by inexperiencea runners, for example within the scope of slimming exexcises, because such persons generally also fail to have special kno~lledge about the technique of running to t~ke the aforementioned problems into account.
To damp vibrations and shocks occuring d~ring running,particularly on hard tracks, various solutions have already been proposed. ~or example, a sports shoe of the aforementioned kind is known in which an air cushion chamber is formed in the heel region of the sole and closed by a valve. ~his air cushion chamber is suppesed to absorb and damp vibrations and i~p~cts elastically by pressure deformation.
~ne provision of comparatively thick soles of very soft flexible material has the same aim in mind. However, both Icnown constructions haYe a significant disadvantage in that, in order to achieve adequate dc~mping, they are socompressible in thehee] region ~f the sole that the runner has a floating feeling imparted to him and loses the feel of the -track which is necessary to develop his best perfol~ance. Indeed, premature tiring of the r~ mer is likely when using an excessively soft sole which no doubt has a good damping effect for i~pacts.
Thè invention therefore has the object of providing a sports Æhoe sole in which, on the one hand, -there is substantial damping of vibrations and impacts occurring during running particularly on hard tracks and the ~lhealthy effects on the heel are thereby avoided l~ithout thereby affecting the perforrlcq~lce of the ~ner. However, at the same ti~e it should be possible to employ one and the same sole ~,1~, consisting o~ relatively soft material for this purpose or to adapt the sole to different ground conditions, for example forest soil or asphalt.
According to the invention, a sole Eor a sports shoe has a heel wedge of yielding material having at least one recess extending transversely to the longitudinal axis of the sole and substantially parallel to the tread face, the recess being open at least at one side edge of the heel wedge, at least one supporting membex of elastically bendable material being replaceably inserted in said recess, said bend-able material being of greater hardness than said soft yield-ing material of the heel wedge to increase the overall hard-ness of the sole, and securing means for securing the support-ing member in said recess.
The invention is thexefore based on the considera-tion that the selection of appropriate supporting members will make it possible to change the softness of the sole itself. In this way, adaptation to the wishes of the runner is possible without difficulties, regardless whether with respect to his weight or the softness of the sole, in some cases also taking the ground properties into consideration.
If relatively stiff supporting members are used, the outsole seems to be given a comparatively high hardness. On the other hand, when using supporting members which are com-paratively easily resillently deformable, the increase in the apparent sole hardness is not so high. ~or example, - 4a -the sole itself may be of foam material, e.g. polyurethane foam having a comparatively low Shore hardness of, for example, about 35. Depending on the p:roperties of the supporting members that are used, the apparent Shore hard-ness of the sole can then be considerably increased, e.g.
to a maximum of 85. The supporting members can be made of all possible materials. For example, PVC, polye-thylene ~ . _ _ . .
: .
' polyamide and especially nylon are sui-table. ~[owever, it would also be possible to make the supportin~ members of suitable rl~etc~l, e.g.
an appropriate sheet metal. The application of the supportin~ members to the sole is simple because the recess :is laterally open. Genercilly it is only required to insert the supportin~r members appropriately from the side. By selecting a suitable colour, the weight range for which a particular supporting member is intended can then be made vi-sible. It is~for example,conceivable to let th~colour become darker with an increase in weightof the runner for whom they ~re deternined.
It iB favourable to make the supportingr members in the for~
of hollow me~bers of elastically bendable material in order thereby to save materic~l and also facilitate simple adaptation to a particular load.
q'o adapt or change the sprin~ properties, it is also poEsible to shape the hollowmember accordingly, inparticular toprovide thehollow m~mber with slots,ribs orlike elements,~her~by the bendingflexibility is alter~d.
A particularl~ simple but also desirable const~lction for the sole according to the in~ention resides in that the heel wedge is provided with a plurality o$ parallel transverse bores in which substantially tubt~ar supportin~ members a~einsertable. It will be kno~n that, havin~ regard to their wall thickness, tubes possess -the highest relative strength ~nd therefore use the least possible matelial. In adaition, no particular orien-tation o~ the -hlbulc~r supporting membexs is necessary in the recess One adv.~nta$e of usin6 a plur~lity of -tubular supporting m~lbers i3 ~lso that under oertain circumstances the hardness of the ~ole cc~n be differently selected in 5~5~11 the re~ion of different supporting members by insertin~,r ~ifferent tubular supporting members in the bores.
The insertion of the tu'bular supporting rnernbers i.s e~sy when the transverse bores are open at both ends and the tubular 5 supporting members are tran~versely sub divided in-to two parts which are each insertable in -the associated transverse bore from opposite side edges of the sole cmd can be intercoupled near their inner ends in the opera-tive position.
However,the supportin~ members could be differently constructed~ Tllus, 10 the supporting members could be in one piece a~d, as a supporting element, carry at least at one end c~n elastic ring which can be snapped into a circumferential groove in the end portion of the supporting members and at their other end carry a collar or likewise an elastic ring which can be snapped into a circ unferential groove.
15 If transverse bores are provided and the suppor-ting members are to be relatively soft, i~e. the sole is to be used by persons of low weight, it is for example conceivable to use a gpiral supporting menber of plastics mate~ial or metal. ~lch a supporting member cculd then be unifc~ y s¢rewed into the transveræe bore from the side. lilthoucgh 20 a plurali ty of parallel supporting members will preferably ofte~ be provided in the sole, it would be conceivable for certain applicationa to provide only one sui tably ~haped supporting member ~/hich co~ld possibly also be lnserted in a r~ceC~s f`xom the heel end of the ~ole rather than from the side but in that case suitable prcvision muæt be 25 made for securely closing the reoess.
~5~5~
Gther feat~es, details and acive~t~;es of the inverltion will become evident from the follo~ing description of pLeferred exa~ples ith reference to tne drawing, ~ erein:-Fig. 1 is a par-t-section~l plat;l view of a s01~3 accor~inOr to the invention;
~ g. 2 is a side elevation of the l(-`ig. 1 solo;
Fig. ~ shows to a ver.y much enlar~ecl <~cc~ e the inner ends of t~ro tube portions ~rhich fo~ the su~porting me.-.~ber, tne latter being modified compared with that of ~
Eig. 4 is an ~mderplan of ~'ig. };
I~g. 5 is a fr~ ntary side el~va--oll of a Modified construc-tion and ~ ig. ~ is an enl ~ged fra~len-tary vie~r ot a supporting me~lber used in the sole of ~'ig. 5.
'L'he sole shown in ~'igs. 1 and 2 consists of an actual outsole 1 of wear-resistan-t material, e.g. v~cc~ni~ed n1bber, and a portion 3 fo~mirlg the heel wedge 2 of relatively sof-t material, e.g. polyurethane foam with a Yhore hardness ofabout 35. The heel portion 3 i9 securely connected to the outsole 1 by appropriate means, e.g. adhesive. 'rhe outsole 1 in the illustrated example is also provided with studs 4.
In the region beneath the contact surfaoe 5 for the heel, the illustrated sole is provided with three transverse bores 6 extending from one side ed~e 7 of the sole to the other 3ide edge ~, the trans~
ver~e bores 6 each terminating in the vicinity of aepression~ 9 in the side edges 7, a of tha sole. Incidentally, a correspondin~
~ . .
~ ' .
S~
depression 10 is also provided at the re,lL end of the sole, In the illustrated embodiMent5 tubular suppo t;in.,r t~Lembers 11 are inserted in the respective tr~nsverse bores ~ d these consi st of a sui table plastics t~aterial, e.g. P'rC, pol,~eth~ylene, poly~2ide 5 or particularly nylon. I~e use of ~netal as a Illaterial f'or the supporting members 11 is also conceivable.
Each supporting me~nber 11 consists of two hlbe portions 12 and 13 of ~,rhich the outer ends each have a~l annular I~lange 14 abutting the side waLl 7 or 3 of the wedge me~Qber 3 in -the region of the 10 depression 9.
The inner ends of the tube portions 12, 13 are constructed so that they can be intercoupled~ For this purpose the one tube portion 12 has a reduced inner end scction 15 '~Jhi.C:i r~n~ breJ inside the second -tube por-tion 1~;. This re~',uceo er!d -soction 15 is provided 1~ on the outside l1~ith an annular bead 16 ~hich, ~`or locking the tube portions 12, 13, is enæagreable cluring insertion of the reduced end section 15 of` the tube portion 12 into -the lrmer end cf the tube portion 11, with c~nnular g~ooves 17 provided on the inner waLl of the tube portion 11, the annulax bead 16 bein~ eng,c~ed in a suitable 20 annula.r groove 17 depending on the desi ~cd length of' the supporting member 11.
In the tt/o left-hand ~upporti2l,~,r memb~ls 11 ot` I~'ig. L, -the .umul~: be.-ld 1~'; is engaged in the second .~mu] ar ~jroo~re a~ vie~red from tlle inner end of the tube portion L3, t~heleas ror tlle ri~ht-hand 25 supporting member the loc~ g takes place itl tne t'ourth ~nula-r 6~oove wheleby the ri~ht-hand ~upportin~; rnernber as a t~ho]e is considerably ' ,' ' shorter ~rlich corresponds to tne n~rrower ~l~lth of the sole or the ed~;e portion 3 at this poin-t.
'rO insert the suppor-tingllLeillber 11, ti~e tube pOrGions 12 or 13 are introduced in the transverse 'bores u froLrl-the respective ends thexeof and then pressed into each other 90 strongly ;rhile inter-~loclcing the c~nnula~ bead 16 and the appropriate a~ltlUIc~ groove 17 un-til a proper seating of the tube portions 12, 13 ha~ been achieved in the transverse bore G with the annular flanga 14 abutting the side wall 7, ~.
lf the supportin~ members 11 are -to be replaced, the tllbe portions 129 13 must be pulled apar-t and out of the respective trans-verse bore. E'or this purpose, the hlbe portions 12, 13 may be provided with suita~le holding elemen-ts, e.g. apertures or the like which are no-t visible in the drawing. If'-the annul~r f'li--mge 1~ projects suffi-ciently beyond the periphery of the tube por-tions 12,13, the latter can also be g~ripped a-t the a~mular flange 14 itself.
~ppropriate tubular suppor-ting rrl~rrlbers-~ 11 are inserted depend-ing on the wei~rh-t of the user of the ~hoes a~d -the h~(~ess of' the sole desired by hirrl. ~he ~hardness~ of the supportin~r mer~'bers 11, i.e.
-their deformability, can be set by selecting a sui-table material, by varying the wall -thickness and possibly also 'by ilppropliate shaping.
~'or exr~lple, the ~hardness~ can bereduced by applying 310ts, which collld also extend spirc~ . An increase in the ~hardnec3s~ can for exaJrlple be acilieved by mec~n~ of web~, ribs or the like.
l~'igs. 3 and ~ illustrate a different embodiment of' the means fo-r couplirlg the inner ends of the tube portions 12~ or 13~. In the s~
~ s. 3 c~d ~ ernbodilnent, one ~Ibe porl;ivn 12' i- a~c~in reduced at its inner encl 15' so thQt it cc~ be -pushed in-to ~the innel end of the other tube por-tion 13~.
~he coupling mec~ns 'bet~Jeen -the two -tube por-tions 12', 1~' are in the nature of a bayonet couplin~. I'or this pu~pose -the reduced end section 15' of` the -tube portion 12' comprises -two dia-me-txally opposed axi31 slots 1.3 from which radial locki.ng notches 19 ex-tend in the same circumferenticil ciirection. ~lese locking notches 19 ser~e as lockin~ elerlents for a pin 21 which passes transversely through the o-ther tube por-tion 13' neal its inner end 20 and ~hich may be of metal if the tube portion 13' is of plas-tics mate~ic~l.
~ or lockin~ purposes, the inner ends of the tube por-tions 121, 13' in the Fig~. 3 c~nd ~ er~bodiment c~e pushed into each other suf:E`i-ciently far c~d, by turning -the tube portions 1'~, 13' with respect to each other, the pin 21 is then introduced in one ~ the locking notch pairs 19 ~Ihich e~tend laterally from the c~ial slo-ts la, whereby locking is ac~ieved. Since a~ain a plurc~ity of locking notches 19 is provided in different axial positions~ the tube portions 12', 13l can be intercoupled in diff`erent c~xlal positions whereby a compensa-tion in length is likewise possible in the rnanner described inrelation to li'ig~ 1.
In the l~i~s. 3 and (; embodi.~nent, -the tube portions 12', 13~
should be provided a-t their outer ends with suitable engc~ge~nent means ~or turnin~ tools. I'or ex~np].e, the;r outer erld co~d be equipped with a slot for c~pplying~ a screwd.river. Ano-ther possi'bility would be to make -the head at the outer end poly~oncil on the insi~e or outside.
.S~5~
- l:L -In the same way as for the outsole acco:rdingr to ~igs. 1 to 4, three transverse bores f, are provided in the re~ion of the contact surf'ace 5 for the heel in the case of ~L~ . 'j, the bores 6 extending fxom one side edgre 7 of the sole to the ot,her side e~ge. '~he trans-verse bores 6 are disposed ln the vicinity of the depressions 9 ofthe side edges of the sole and te~inate therein.
Tubular supporting members 11' are insertea in the transverse bores 6, one of these being shown in ~g. G~ The supportirlg member 11~ is a length of a plastics tube of corrugated longitudinal section and thus provided over its entire length with circu~ferential grooves.
T~le length of the -tube is such that, after it has been inserted in the transverse bore 6, both its ends 23 or 2~ still project so far from the apertures of the transverse bores ~ that at least one circumferen--tiaL ~rroove 22 is disposed completel,y beyond -the trc~svelse bores ~.
An elastic ring 25a or 2~b of ~ubber or the like is snapped into this circumferentiaL groove 22 so that it is tigntly seated in the base of the groove and is held by the groove 22. ~ig. o illustra-te~; two different embodiments 25a and 25b for the ring cross-section. It will be evident that any desired other fo~s oL elas-tic rings can be selected to fulfil the sa~e purpose. The on:Ly thing that is necessary is that even after snapping in the side f`aces of` the ring 25a, b still project sufficiently far beyond t;he circumferen-tial sl~rface of the tube to achieve arl abutment and thus a suppoxting ei'fect at the lateral edges Or the sc~le.
3efore insertion in the trc~n,sverse bores 6, the tube 11l can be provided with a / aæent such as Vaseline which accumuLates at lubricating 5~
the bottom of at least a few grooves 22. In tlLis .w~y insertion of the tube is VeLy much simplified.
Departures can be made with:in the scope of the inven-tion fro~ the shape of the grooves as well as from -the illustrated oircu-lar cross-section of the tube 11~. lt is also sufficient to provide the groo~es merely in the two end portions 2~ OI` 2~ on which -the rings 25a, b aro placed. l;~rther~ it is possible to provide one end of the tube 11~ with a colla-r projecting beyond the exterior of the rollers 22, for exc~nple by lateral fusion~ so tha-t an elastio ring 10 25a~ b need be snapped only onto one end 23 or 2~i-:, :
Claims (4)
1. A sole for sports shoes comprising a heel wedge of soft yielding material, having at least one recess extend-ing transversely to the longitudinal axis of the sole and substantially parallel to the tread face, the recess being open at least at one side edge of the heel wedge, at least one supporting member of elastically bendable material being replaceably inserted in said recess, said bendable material being of greater hardness than said soft yielding material of the heel wedge to increase the overall hardness of the sole, and securing means for securing the supporting member in said recess.
2. A sole according to claim 1 wherein the recess is a bore of circular cross-section and the supporting member in its outer cross-sectional shape and size is adapted to the cross-section of the bore so as to be fittingly insertable into the bore.
3. A sole according to claim 2, wherein the heel wedge is provided with a plurality of parallel transverse bores extending throughout the heel wedge and open to both oppo-site edges thereof, and wherein the supporting members are each one piece extending throughout the bores respectively
4. A sole according to claim 3 wherein the supporting members each carry a collar on one end thereof and at least one circumferential groove at the other end thereof, which is adapted to receive an elastic ring as a securing means.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792904540 DE2904540C2 (en) | 1979-02-07 | 1979-02-07 | Sole for sports shoes |
| DEP2904540.7 | 1979-02-07 | ||
| DE19792922163 DE2922163A1 (en) | 1978-06-07 | 1979-05-31 | OPTICAL DEVICE FOR DETERMINING THE GUETE OF A SURFACE |
| DEP2922163.1 | 1979-05-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1115950A true CA1115950A (en) | 1982-01-12 |
Family
ID=25777708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA344,544A Expired CA1115950A (en) | 1979-02-07 | 1980-01-28 | Sole for sports shoes, particularly for shoes used for long-distance running on hard tracks |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1115950A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5729912A (en) * | 1995-06-07 | 1998-03-24 | Nike, Inc. | Article of footwear having adjustable width, footform and cushioning |
| US6449878B1 (en) | 2000-03-10 | 2002-09-17 | Robert M. Lyden | Article of footwear having a spring element and selectively removable components |
| US6601042B1 (en) | 2000-03-10 | 2003-07-29 | Robert M. Lyden | Customized article of footwear and method of conducting retail and internet business |
| US7752775B2 (en) | 2000-03-10 | 2010-07-13 | Lyden Robert M | Footwear with removable lasting board and cleats |
-
1980
- 1980-01-28 CA CA344,544A patent/CA1115950A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5729912A (en) * | 1995-06-07 | 1998-03-24 | Nike, Inc. | Article of footwear having adjustable width, footform and cushioning |
| US5813146A (en) * | 1995-06-07 | 1998-09-29 | Nike, Inc. | Article of footwear having adjustable width, footform and cushioning |
| US6449878B1 (en) | 2000-03-10 | 2002-09-17 | Robert M. Lyden | Article of footwear having a spring element and selectively removable components |
| US6601042B1 (en) | 2000-03-10 | 2003-07-29 | Robert M. Lyden | Customized article of footwear and method of conducting retail and internet business |
| US7752775B2 (en) | 2000-03-10 | 2010-07-13 | Lyden Robert M | Footwear with removable lasting board and cleats |
| US8209883B2 (en) | 2000-03-10 | 2012-07-03 | Robert Michael Lyden | Custom article of footwear and method of making the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |