CA1186144A - Sole for cross-country ski shoe - Google Patents
Sole for cross-country ski shoeInfo
- Publication number
- CA1186144A CA1186144A CA000404526A CA404526A CA1186144A CA 1186144 A CA1186144 A CA 1186144A CA 000404526 A CA000404526 A CA 000404526A CA 404526 A CA404526 A CA 404526A CA 1186144 A CA1186144 A CA 1186144A
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- Canada
- Prior art keywords
- ski
- sole
- groove
- section
- side walls
- 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.)
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Abstract
SOLE FOR CROSS-COUNTRY SKI SHOE
ABSTRACT
An outer sole for a cross-country ski shoe is disclosed. The outer sole is comprised of a sole plate member having toe, forefoot, arch and heel sections. The lower surface of the sole plate member has a pair of transversely spaced, longitudinally extending side walls defining between them a longitudinally extending groove. The groove has a width sufficient to receive the ski. The groove extends through at least the forefoot, arch and heel sections.
ABSTRACT
An outer sole for a cross-country ski shoe is disclosed. The outer sole is comprised of a sole plate member having toe, forefoot, arch and heel sections. The lower surface of the sole plate member has a pair of transversely spaced, longitudinally extending side walls defining between them a longitudinally extending groove. The groove has a width sufficient to receive the ski. The groove extends through at least the forefoot, arch and heel sections.
Description
3~86~L4~
SOLE FOR CROS~COUNTR~ SKI SHOE
TE~HNICAL FIELD
.
The present invention relates to an improvement in a sole for a eross-eountry shoe, and also to a toe binding especi~lly suitable for use with an embodiment of the improved sole.
Developments in the cross-country ski sport in recent years have resulted in the use of steadily more lightweight ski equipment including ligh~er weight shoes, skis and bindings.
In regard to soles for cross-country ski shoes, the use of leather 10 is being replaced by synthetic materials such RS rubber and pl~sti¢s~ for example nylon. Toe bindings of various types have been made lightweight ~d smaller, particularly in connection wlth the development of s~called "snabel" or "nose tip shoes," where an extremity or nose on the shoe sole is locked into the toe binding.
These developments have resulted in lightweight and comfortable equipment, particularly for competition skiers. However9 these developments have simultaneously resulted in steadily greater problems in obtnining a dependable ~nd torqu~stable connection between the shoe ~d the sld such th< latersl movements of the shoe in the binding ~nd 20 also o~ the shoe itself &re avdded. Such lateral movements result becallse the heel portion of the shoe becomes more or less displaced ~om its support on the ski, resultillg in unstable snd Imcomfortable skiing. In order to avoid this shortcoming, attempts have been m~de to develop better toe bindings and Yarious forms of heel support in 25 order to hinder such lateral displacement of the shoe. The need for ~ ~i 6~
steady support of the shoe on the ski is even more import~nt because of the use of present day narrow and lighter skis and very lightweight and thin cross-cou~try shoes, frequently made from a more or less elastic textile materi~l.
l~qany different solutions have been proposed to improve biasing support and loeking of the shoe onto the ski. For example, the front of the sole of the shoe is locked into a toe binding which includes a clamp, side ears or walls and upwal dly extending pins. The tip or toe extension of the sole is placed between the side walls, the pins extend into apertures in the toe extension and the clamp sec~es the toe extension in position. Currently several $ypes of commerclal bindings which are adapted to receive a st~nd~rdized sole are available. However9 special types of eommercial bindings are also available. ~urtherl various types of heel supports are currently in use. One type of heel support uses V-shaped groove in the heel of the sole which fits around a complementary V-shaped projection attached to the ski. In another prior art technique, crosswise or longitudinally extending grooves or the like are formed in the surface of the sole between toe ~nd heel. Norwegian patent No. 1~0 325 discloses ~ cross-country ski shoe sole provided with a pair of longitudin~ grooves or ridges ad~pted to receive opposed side edges of the ski. These grooves or ridges are located in the forefoot section of the sole.
SUMMARY OF THE lNVENTION
.~ The present invention~ré~ates to ~n outersole f or a cross-country 25 ski shoe. The outer sole includes ~ sole plate member h~ving a toe section, ~ forefoot section, an Arch section, a heel section, an upper surface for ~tta~hment to a shoe upper and Q lower surface adapted to ~ntact ~ ski. The lower surface hes Q pair of transversely spaced, longitudinally extending side wsll defining between them a longitudin~lly extending ~roove. The groove has a width sufficient for receiving the ski so t51at the side walls of the groove extend about the side walls of the slcl. The ~,~roove extends through Qt least the forefoot, ~rch ~nd heel seetio~s.
A sole in ~ccordance with the preqent invention is constructed with the understanding that s~tisf~ctory l~teral support cen be optimized ~136~
if the engagement between the sole and the ski is always present, i.e., present even during skiing motion when the shoe is bent up from the ski.
A sole for cross-country shoe in accordance with the invention is 5 generally characterized in that substantiEILly the entire sole frorn the toe to the heel is provided with a continuous recess or "groove,"
dimensioned for grasping around opposite side edges of the ski. In one embodiment the groove extends from immediately behind the toe extesion to the heel edge. In another embodiment the groove extends 10 into the toe extension.
By having the groove extend continuously from the toe portion of the sole to the heel edge, whether or not the groove extends into the toe extension, the need of a heel plste with the V-shaped projection is eliminated. The coupling of the shoe to the ski is thus simplifîed, 15 and less elements h~ve to be atta~hed to the ski. Since less elements have ts be att&ched to the ski, the chance of weakening the ski because of the attachment of elelments to the ski is reduced. This use of the continuous longitudinal groove also has the advantage that a continuous lateral alignment and correction mechanism, i.e., the edges of the side 20 w~s of the grooves extending around and engaging the sides of the ski, tends to urge the shoe into lateral alignment with the ski during most of the up and down motion of the foot.
In the embodiment where the groove extends into the toe extension of the ~hoe sole, tl)e side w&lls of the groove which fit into the binding 25 grasps the ski edges. A toe binding which is specially ad&pted for this embodiment of a sole is ~Iso pQrt of the invention diselosed herein.
There ~re tS~erefore two embodiments of shoe soles in accordance with ~e invention, n~mely ~ first embodiment adapted for standard toe bindings wherein the groove does not extend into the toe extension, and 30 one embodiment ad~pted for the new binding in Rccordance with the invention wherein the groove e~tends into the toe extension.
The recess or groove in the sole should preferably be deep, ~nd for instance comprise about 10% OI the width of the ski, i.e., flbout 5 mm deep for ~ norm~ cPoss-country ski. The sides of the recess should 35 extend either normal to the sur~ace of the sole, or at ~ smsll tilt 6~4 outwards, such that a centering effect Occuls when the shoe is set down onto the ski. Slnce the ski shoe wi ll generally ~1WAYS be to som e extent in engagement with the ski, it is not necessary to use ~ separate heel fitting. The sole should preferably be of the "snabel type," i.e., 5 having a forwArdly directed to exterlsioll with the usual apertures for pins positioned on the binding plate. Alternatively, other locking means can be used.
With the embodiment of a sole which is to be used with industry stand~rd "Nordic Norm" toe bindings both 75mm and extended toe 50mm, 10 the thiekness of ~he ridges in front should decrease towards zero at the point where the sole comes into ellgagen-ent w~th the binding armature. Otherwise the sole would be pressed upwards by the base plate of the binding. This embodiment could also be made for use with most flny toe binding.
A fu~ther new feature with the shoe sole in accordance with the invention is that the longitudinal center portion of the sole9 i.e. the erch area, is provided with a lateral widening or extension, particularly on the inside of the foot, to an extent such that the groove or recess in the sole can be extended continuously b~ckwards through this center 20 (arch) portion to the heel portion of the sole. Continuous engagement between the sole and the ski at both sides of the sole is thus obtained.
Furthermore, an evenly distributed, full support between the shoe sole and the ski occursO This later~l extension particularly on the mediPl side, provides additional lateral support to aid in edging the skis, thus 25 enhacing ~le control ability of the skis~ This is in contrast to typical ~oss~country ski shoe soles where the center portion is rather nsrrow, res~ting in a eenter ~one OI the sole that has no or very little support against the ski.
A further feature in accordance with the invention relating to 30 the lateral expansion of the sole, is that the shoe above the lateral sole expai)sion can be built up or supplied with a special build up.
The invention also comprises a new type of toe binding which accomodates a sole in which the groove extends all the way to the tip of ~he sole into the toe extension. A toe binding in accordance with the invention ~ gener&~y characterized simply by a clamp fit~ng which 36~4 s~an be locked in cl~mping position against the tip of the sole.
In a preferred embodiment of a binding in accordance with the invention the clamp fitting includ&~ a front guide which preYents lateral movements of the clamp fitting. In one embodiment the clamp fittings 5 are pivotally supported on a trsnsversely extending bolt or the like journalled in a binding arm~ture attached to the ski. In another embodiment a laterally extending guide in the shape of fl~nge members is provided on the clamp fittings and on the plate ~rmature attached to the ski.
A binding in accordance with the invention may be provided with Yarious kinds of mechanisms for clamping and locking the clamp armature against the tip of the sole. In one embodiment a threaded bolt is attached to the plate armature in connection with a wing nut which rests on and is tightened against the clamp armature, Another 15 embodiment uses an eccentric~lly journaUed pivot arm.
One emb~diment of a binding in accordance with the invention distinguishes from conventional bir:ding in that the plate ~rmature a~tached to the ski is made without the usual side ears adapted to rest against the side edges of the sole, since the locking of the shoe sole 20 Q~ainst lateral movement is obtained entirely through the special groove in the sole which r~xtends into the toe extension strads~ing the side edges of the ski. Additionally, the sole can be qrranged with apertures engaging complem~ntary pins or the like attached to the binding pl2te armatllre~ In another embodiment of the binding, the conventional side 25 ears on the plate armature are replaced with downwardly pointing side ears provided on the clarnp armature. Such downwardly pointing side ears superimpose the tip of the sole (toe extension) incluciing the opposed side ~es which extend over the side edges of the ski. With this embodiment has the special ~dvantage that the binding can be used with 30 conventional ski soles as well ss with the special shoe sole in accordance with the invention provided with Q longitudinally extending groove or recess along the tip of the sole.
, ~6~4 -5a-~
Various aspects of the invention are as follows:
An outer sole for a ~ross-country ski shoe comprising R
sole plste member having a toe seation, a forefoot sectiorl, an arch 5 section, a hesl section, an ~pper surface for sttRchment to a shoe upper and a lower surface adapted to contact a ski, said lower s~face having a pair of transversely spaced, longitudinally extending side walls defining between them a longitudinally extending groove, said gl oove having a width sufficient for receiving the ski so that said side walls of said 10 groove extend about the side walls of the ski, said groove extending through at least said forefoot9 ~rch and heel sections.
~ n outer sole for a cross-country ski shoe comprising ~
sole plate member having a toe section, a forefoot section, ~n ~rch section, a heel ~ection, a toe extension adapted to be coupled to a 15 binding on a ski, ~n upper surface for aetachment to Q shoe upper, a lower su~rface ~d~pted to cont~ct the ski, ~nd a lateral extension portion on the medial side of ssid arch ssction~ said lateral extension portion extending past the medial side edge of the ski ~nd through the entire srch ~ection, said lower surface of said s~le plate member having a
SOLE FOR CROS~COUNTR~ SKI SHOE
TE~HNICAL FIELD
.
The present invention relates to an improvement in a sole for a eross-eountry shoe, and also to a toe binding especi~lly suitable for use with an embodiment of the improved sole.
Developments in the cross-country ski sport in recent years have resulted in the use of steadily more lightweight ski equipment including ligh~er weight shoes, skis and bindings.
In regard to soles for cross-country ski shoes, the use of leather 10 is being replaced by synthetic materials such RS rubber and pl~sti¢s~ for example nylon. Toe bindings of various types have been made lightweight ~d smaller, particularly in connection wlth the development of s~called "snabel" or "nose tip shoes," where an extremity or nose on the shoe sole is locked into the toe binding.
These developments have resulted in lightweight and comfortable equipment, particularly for competition skiers. However9 these developments have simultaneously resulted in steadily greater problems in obtnining a dependable ~nd torqu~stable connection between the shoe ~d the sld such th< latersl movements of the shoe in the binding ~nd 20 also o~ the shoe itself &re avdded. Such lateral movements result becallse the heel portion of the shoe becomes more or less displaced ~om its support on the ski, resultillg in unstable snd Imcomfortable skiing. In order to avoid this shortcoming, attempts have been m~de to develop better toe bindings and Yarious forms of heel support in 25 order to hinder such lateral displacement of the shoe. The need for ~ ~i 6~
steady support of the shoe on the ski is even more import~nt because of the use of present day narrow and lighter skis and very lightweight and thin cross-cou~try shoes, frequently made from a more or less elastic textile materi~l.
l~qany different solutions have been proposed to improve biasing support and loeking of the shoe onto the ski. For example, the front of the sole of the shoe is locked into a toe binding which includes a clamp, side ears or walls and upwal dly extending pins. The tip or toe extension of the sole is placed between the side walls, the pins extend into apertures in the toe extension and the clamp sec~es the toe extension in position. Currently several $ypes of commerclal bindings which are adapted to receive a st~nd~rdized sole are available. However9 special types of eommercial bindings are also available. ~urtherl various types of heel supports are currently in use. One type of heel support uses V-shaped groove in the heel of the sole which fits around a complementary V-shaped projection attached to the ski. In another prior art technique, crosswise or longitudinally extending grooves or the like are formed in the surface of the sole between toe ~nd heel. Norwegian patent No. 1~0 325 discloses ~ cross-country ski shoe sole provided with a pair of longitudin~ grooves or ridges ad~pted to receive opposed side edges of the ski. These grooves or ridges are located in the forefoot section of the sole.
SUMMARY OF THE lNVENTION
.~ The present invention~ré~ates to ~n outersole f or a cross-country 25 ski shoe. The outer sole includes ~ sole plate member h~ving a toe section, ~ forefoot section, an Arch section, a heel section, an upper surface for ~tta~hment to a shoe upper and Q lower surface adapted to ~ntact ~ ski. The lower surface hes Q pair of transversely spaced, longitudinally extending side wsll defining between them a longitudin~lly extending ~roove. The groove has a width sufficient for receiving the ski so t51at the side walls of the groove extend about the side walls of the slcl. The ~,~roove extends through Qt least the forefoot, ~rch ~nd heel seetio~s.
A sole in ~ccordance with the preqent invention is constructed with the understanding that s~tisf~ctory l~teral support cen be optimized ~136~
if the engagement between the sole and the ski is always present, i.e., present even during skiing motion when the shoe is bent up from the ski.
A sole for cross-country shoe in accordance with the invention is 5 generally characterized in that substantiEILly the entire sole frorn the toe to the heel is provided with a continuous recess or "groove,"
dimensioned for grasping around opposite side edges of the ski. In one embodiment the groove extends from immediately behind the toe extesion to the heel edge. In another embodiment the groove extends 10 into the toe extension.
By having the groove extend continuously from the toe portion of the sole to the heel edge, whether or not the groove extends into the toe extension, the need of a heel plste with the V-shaped projection is eliminated. The coupling of the shoe to the ski is thus simplifîed, 15 and less elements h~ve to be atta~hed to the ski. Since less elements have ts be att&ched to the ski, the chance of weakening the ski because of the attachment of elelments to the ski is reduced. This use of the continuous longitudinal groove also has the advantage that a continuous lateral alignment and correction mechanism, i.e., the edges of the side 20 w~s of the grooves extending around and engaging the sides of the ski, tends to urge the shoe into lateral alignment with the ski during most of the up and down motion of the foot.
In the embodiment where the groove extends into the toe extension of the ~hoe sole, tl)e side w&lls of the groove which fit into the binding 25 grasps the ski edges. A toe binding which is specially ad&pted for this embodiment of a sole is ~Iso pQrt of the invention diselosed herein.
There ~re tS~erefore two embodiments of shoe soles in accordance with ~e invention, n~mely ~ first embodiment adapted for standard toe bindings wherein the groove does not extend into the toe extension, and 30 one embodiment ad~pted for the new binding in Rccordance with the invention wherein the groove e~tends into the toe extension.
The recess or groove in the sole should preferably be deep, ~nd for instance comprise about 10% OI the width of the ski, i.e., flbout 5 mm deep for ~ norm~ cPoss-country ski. The sides of the recess should 35 extend either normal to the sur~ace of the sole, or at ~ smsll tilt 6~4 outwards, such that a centering effect Occuls when the shoe is set down onto the ski. Slnce the ski shoe wi ll generally ~1WAYS be to som e extent in engagement with the ski, it is not necessary to use ~ separate heel fitting. The sole should preferably be of the "snabel type," i.e., 5 having a forwArdly directed to exterlsioll with the usual apertures for pins positioned on the binding plate. Alternatively, other locking means can be used.
With the embodiment of a sole which is to be used with industry stand~rd "Nordic Norm" toe bindings both 75mm and extended toe 50mm, 10 the thiekness of ~he ridges in front should decrease towards zero at the point where the sole comes into ellgagen-ent w~th the binding armature. Otherwise the sole would be pressed upwards by the base plate of the binding. This embodiment could also be made for use with most flny toe binding.
A fu~ther new feature with the shoe sole in accordance with the invention is that the longitudinal center portion of the sole9 i.e. the erch area, is provided with a lateral widening or extension, particularly on the inside of the foot, to an extent such that the groove or recess in the sole can be extended continuously b~ckwards through this center 20 (arch) portion to the heel portion of the sole. Continuous engagement between the sole and the ski at both sides of the sole is thus obtained.
Furthermore, an evenly distributed, full support between the shoe sole and the ski occursO This later~l extension particularly on the mediPl side, provides additional lateral support to aid in edging the skis, thus 25 enhacing ~le control ability of the skis~ This is in contrast to typical ~oss~country ski shoe soles where the center portion is rather nsrrow, res~ting in a eenter ~one OI the sole that has no or very little support against the ski.
A further feature in accordance with the invention relating to 30 the lateral expansion of the sole, is that the shoe above the lateral sole expai)sion can be built up or supplied with a special build up.
The invention also comprises a new type of toe binding which accomodates a sole in which the groove extends all the way to the tip of ~he sole into the toe extension. A toe binding in accordance with the invention ~ gener&~y characterized simply by a clamp fit~ng which 36~4 s~an be locked in cl~mping position against the tip of the sole.
In a preferred embodiment of a binding in accordance with the invention the clamp fitting includ&~ a front guide which preYents lateral movements of the clamp fitting. In one embodiment the clamp fittings 5 are pivotally supported on a trsnsversely extending bolt or the like journalled in a binding arm~ture attached to the ski. In another embodiment a laterally extending guide in the shape of fl~nge members is provided on the clamp fittings and on the plate ~rmature attached to the ski.
A binding in accordance with the invention may be provided with Yarious kinds of mechanisms for clamping and locking the clamp armature against the tip of the sole. In one embodiment a threaded bolt is attached to the plate armature in connection with a wing nut which rests on and is tightened against the clamp armature, Another 15 embodiment uses an eccentric~lly journaUed pivot arm.
One emb~diment of a binding in accordance with the invention distinguishes from conventional bir:ding in that the plate ~rmature a~tached to the ski is made without the usual side ears adapted to rest against the side edges of the sole, since the locking of the shoe sole 20 Q~ainst lateral movement is obtained entirely through the special groove in the sole which r~xtends into the toe extension strads~ing the side edges of the ski. Additionally, the sole can be qrranged with apertures engaging complem~ntary pins or the like attached to the binding pl2te armatllre~ In another embodiment of the binding, the conventional side 25 ears on the plate armature are replaced with downwardly pointing side ears provided on the clarnp armature. Such downwardly pointing side ears superimpose the tip of the sole (toe extension) incluciing the opposed side ~es which extend over the side edges of the ski. With this embodiment has the special ~dvantage that the binding can be used with 30 conventional ski soles as well ss with the special shoe sole in accordance with the invention provided with Q longitudinally extending groove or recess along the tip of the sole.
, ~6~4 -5a-~
Various aspects of the invention are as follows:
An outer sole for a ~ross-country ski shoe comprising R
sole plste member having a toe seation, a forefoot sectiorl, an arch 5 section, a hesl section, an ~pper surface for sttRchment to a shoe upper and a lower surface adapted to contact a ski, said lower s~face having a pair of transversely spaced, longitudinally extending side walls defining between them a longitudinally extending groove, said gl oove having a width sufficient for receiving the ski so that said side walls of said 10 groove extend about the side walls of the ski, said groove extending through at least said forefoot9 ~rch and heel sections.
~ n outer sole for a cross-country ski shoe comprising ~
sole plate member having a toe section, a forefoot section, ~n ~rch section, a heel ~ection, a toe extension adapted to be coupled to a 15 binding on a ski, ~n upper surface for aetachment to Q shoe upper, a lower su~rface ~d~pted to cont~ct the ski, ~nd a lateral extension portion on the medial side of ssid arch ssction~ said lateral extension portion extending past the medial side edge of the ski ~nd through the entire srch ~ection, said lower surface of said s~le plate member having a
2 pair of transversly spaced, longitudinally extending side walls defining between them ~ longitudinaLly extending Igroove, said grooYe having a width sufficient ~r receiving the ski so that said side walls of said grooYe extend about the side walls of the groove3 said groove extending from said toe section, and through said forefoot, arch and heel sections 25 so that in normal c~oss-country skiing moffons some portion of said side wslls of s~id groove extend about the side w 71s of ski to provide lateral stability.
~L8~ 4 -5b-A ~oss-country ski shoe comprising a shoe upper ~nd ~n outer sole, said outer sole including 8 sole plate member hf~ving a toe section, ~ forefoot section, an arch section, a heel section, a toe extensioll ad~pted to be coupled to 1l binding on ~ ski, an upper surfQce 5 attached to said shoe upper, ~ lower surfsce ad~pted to cont~ct a ski, ~nd a lateral extension porffon on the medial side of said arch section, sa~d lateral extension porffon extending pRSt the medi~l side edge of the ski and through the entire arch section, s~id lower surf~ce of said sole plate mem~r having a pair of transversely speced, longitudinally 10 eastendirlg ~;ide walls defining between them a longitu~nally extending groove, ~aid groove having ~ width sufficient for reeeiving the ski so tha$ s~id side w~lls of said groove extend ~bout the side walls of the 3ki, said gr~ve extending from said toe section and through s~id forefoot, arch and heel si~ctions so that in normal cross-~oun~ry skiing motions 15 30lDe portion of said side walls of said groove extend~ about the side walls of ~ki to provide latersl stability.
A toe binding for coupling a CT oss-country ski shoe to a ski comprising a plate member eldepted to be fixed to the ski, a damp adapted to cont~ct a toe extension of the ski shoe and a releaseable clamp ret~iner, s~}id plate member having nat side edges to permit 20 F~ordons of the toe extension to extend downw~rd Qbout the side edges of the sld.
Various ~dvantflges snd features of novelty which characterize the ulvention ~re pointed out with particularity in the claims annexed hereto 25 and forming a p~rt hereof. E~owever, for a better understanding of the ~.~.8~
invention, its advantages, and objects obtained by its use, reference should be made to the drawings which form a further part hereof and to the aceompan~ng deseriptive matter in which there is illustrated and described preferred embodiments of the invention.
5 BRI13F DESCRIPrIC)N CSF THE DRAWINGS
Figure 1 is a plan view of one embodiment of a sole in accord~nce with the present invention;
Fig~ e 2 is a longitudinal sectional view taken generally along line 2-2 ~ ~igure 1 illustrating the sole mounted on a ski;
Figure 3 is a perspective view of the bottom side of the sole of Figure l;
Figure 4 is a top plan view of the toe exter~;ion of the sole of Fi~ure 1 ~ttached to a ski by a comrentional binding;
Figure 5 is ~ plan view of another embodiment of a sole in 15 accordance with ~he present invention;
~igure 6 is a perspective view of the bottom side of the sole of Figure 5;
Fig~e ~a is a fragmentary perspeetive view of the tip portion of a variation of a sole in accordance with the invention;
Figure 7 is a cross-section taken gener~lly along line 7-7 in Figure 5;
Pigures 8 and 9 are a lateral view in section and a plan view, respectively, of ~ ski binding in ~ccordance with the invention, shown coupled to a ski shoe having a sole in accordance with the invention;
Fi~ure l0 is a later~l view æimilar to Figure 8, illustrating another embodiment of ski binding; and Figure 11 is ~ schematic perspective view illustrating a further embodiment of ski binding.
DETAILED D~SCRIPrION OF THE INVENTION
- 30 In Pig~es ~4, where liice reference numbers design~te like parts, a solel comprising a sole pl~te member in ~ceordance with the present invention is designated generally as 2. Sole pl~te member 2 is preferably molded ~rom a pl~stie or a rubber- or plastic-like material. Sole plate member 2 can be divided into A number of secffons, related apprGximately 35 to the portions of the foot located above the respective sections. For ~1~36~L4~
example, d toe section is located between lines Ll and L2; a forefoot section is located between lines L2 and L3; an arch sectoin is located by line L3 and ~; a heel section is located rearward of line Ll; and a toe extension is located foreward of line Ll. ~ole plate member 2 h~ a longitudinally extending rectilinear recess or "groove" 4 on its bottom or underside defined between a pair of oppos;ng, transversely sp~ced edges or side walls 6 and 8. Side walls 6 and 8 extend normQl to or substantially normal to, i.e. at a slight outward angle to, the plane of sole plate member 2 or the bottom face of groove 4. The bottom face of groove 4 is designed to rest against the top side of the ski. The width of the groove corresponds to the width "B" of a ski which is to be used with the sole. ~ide walls 6, 8 thus extending about the side walls of the ski. Preferably, sole plate member 2 is ~ormed of two pieces 3 and 5, which are secured to one another. Piece
~L8~ 4 -5b-A ~oss-country ski shoe comprising a shoe upper ~nd ~n outer sole, said outer sole including 8 sole plate member hf~ving a toe section, ~ forefoot section, an arch section, a heel section, a toe extensioll ad~pted to be coupled to 1l binding on ~ ski, an upper surfQce 5 attached to said shoe upper, ~ lower surfsce ad~pted to cont~ct a ski, ~nd a lateral extension porffon on the medial side of said arch section, sa~d lateral extension porffon extending pRSt the medi~l side edge of the ski and through the entire arch section, s~id lower surf~ce of said sole plate mem~r having a pair of transversely speced, longitudinally 10 eastendirlg ~;ide walls defining between them a longitu~nally extending groove, ~aid groove having ~ width sufficient for reeeiving the ski so tha$ s~id side w~lls of said groove extend ~bout the side walls of the 3ki, said gr~ve extending from said toe section and through s~id forefoot, arch and heel si~ctions so that in normal cross-~oun~ry skiing motions 15 30lDe portion of said side walls of said groove extend~ about the side walls of ~ki to provide latersl stability.
A toe binding for coupling a CT oss-country ski shoe to a ski comprising a plate member eldepted to be fixed to the ski, a damp adapted to cont~ct a toe extension of the ski shoe and a releaseable clamp ret~iner, s~}id plate member having nat side edges to permit 20 F~ordons of the toe extension to extend downw~rd Qbout the side edges of the sld.
Various ~dvantflges snd features of novelty which characterize the ulvention ~re pointed out with particularity in the claims annexed hereto 25 and forming a p~rt hereof. E~owever, for a better understanding of the ~.~.8~
invention, its advantages, and objects obtained by its use, reference should be made to the drawings which form a further part hereof and to the aceompan~ng deseriptive matter in which there is illustrated and described preferred embodiments of the invention.
5 BRI13F DESCRIPrIC)N CSF THE DRAWINGS
Figure 1 is a plan view of one embodiment of a sole in accord~nce with the present invention;
Fig~ e 2 is a longitudinal sectional view taken generally along line 2-2 ~ ~igure 1 illustrating the sole mounted on a ski;
Figure 3 is a perspective view of the bottom side of the sole of Figure l;
Figure 4 is a top plan view of the toe exter~;ion of the sole of Fi~ure 1 ~ttached to a ski by a comrentional binding;
Figure 5 is ~ plan view of another embodiment of a sole in 15 accordance with ~he present invention;
~igure 6 is a perspective view of the bottom side of the sole of Figure 5;
Fig~e ~a is a fragmentary perspeetive view of the tip portion of a variation of a sole in accordance with the invention;
Figure 7 is a cross-section taken gener~lly along line 7-7 in Figure 5;
Pigures 8 and 9 are a lateral view in section and a plan view, respectively, of ~ ski binding in ~ccordance with the invention, shown coupled to a ski shoe having a sole in accordance with the invention;
Fi~ure l0 is a later~l view æimilar to Figure 8, illustrating another embodiment of ski binding; and Figure 11 is ~ schematic perspective view illustrating a further embodiment of ski binding.
DETAILED D~SCRIPrION OF THE INVENTION
- 30 In Pig~es ~4, where liice reference numbers design~te like parts, a solel comprising a sole pl~te member in ~ceordance with the present invention is designated generally as 2. Sole pl~te member 2 is preferably molded ~rom a pl~stie or a rubber- or plastic-like material. Sole plate member 2 can be divided into A number of secffons, related apprGximately 35 to the portions of the foot located above the respective sections. For ~1~36~L4~
example, d toe section is located between lines Ll and L2; a forefoot section is located between lines L2 and L3; an arch sectoin is located by line L3 and ~; a heel section is located rearward of line Ll; and a toe extension is located foreward of line Ll. ~ole plate member 2 h~ a longitudinally extending rectilinear recess or "groove" 4 on its bottom or underside defined between a pair of oppos;ng, transversely sp~ced edges or side walls 6 and 8. Side walls 6 and 8 extend normQl to or substantially normal to, i.e. at a slight outward angle to, the plane of sole plate member 2 or the bottom face of groove 4. The bottom face of groove 4 is designed to rest against the top side of the ski. The width of the groove corresponds to the width "B" of a ski which is to be used with the sole. ~ide walls 6, 8 thus extending about the side walls of the ski. Preferably, sole plate member 2 is ~ormed of two pieces 3 and 5, which are secured to one another. Piece
3 is preferably ~ormed of thermoplastic which is flexible yet sufficiently rigid to provide the required degree of torsional stability. Piece 3 is attached to the shoe upper. Piece 5 is preferably formed of thermoplastic or rubber like material having the skid resistant property of rubber.
Piece 5 has groove 4 formed longitudinally in it.
Figure 2 illustrates the depth profile of groove 4 as "H." This depth can, if desired, vary somewhat in correspondence with the contour ~f lateral portions lO and 12 of sole plate member 2, but should în average have a depth of about ~-7 mm. The depth of the groove can if d~ired increase towards the heel portion as shown by dot-dash lines 9 in Figure 2. The front toe portion sole plate member 2 and groove
Piece 5 has groove 4 formed longitudinally in it.
Figure 2 illustrates the depth profile of groove 4 as "H." This depth can, if desired, vary somewhat in correspondence with the contour ~f lateral portions lO and 12 of sole plate member 2, but should în average have a depth of about ~-7 mm. The depth of the groove can if d~ired increase towards the heel portion as shown by dot-dash lines 9 in Figure 2. The front toe portion sole plate member 2 and groove
4 cQn be varied in accoFdsn~e with the type of toe binding which will be usedO
The atta~hment OI sole plate member 2 and the shoe to which it is attached to a typic~1 ~ross-~ountry ski 30 by a binding ll is shown in Fig~es 2 and 4. Binding 11 includes a binding plate 13, clamp 28 and cla}np retainer 29. Binding plate 13 includes a pair of opposed upwar<Ily ext~nding side walls 15 and pins 31. Clamp 28 is pivotalby carried by the side walls l5, snd clamp retainer 29 is spring biased into a locking position onto clamp 28. A toe extension 17 o~ sole plate 35 member 2 has a plurality of apertures 33 for ~lignment with pins 33.
To ~ttach sole plate member 2 to ski 30, elamp ret~iner 29 is moved to release clamp and clamp 28 is pivoted upward. Toe extension 17 is slipped b~tween ~ide walls 15 ~nd pins 31 pass into apertures 33.
Thereafter clamp 2~ is pivoted downward on top of toe extension 17
The atta~hment OI sole plate member 2 and the shoe to which it is attached to a typic~1 ~ross-~ountry ski 30 by a binding ll is shown in Fig~es 2 and 4. Binding 11 includes a binding plate 13, clamp 28 and cla}np retainer 29. Binding plate 13 includes a pair of opposed upwar<Ily ext~nding side walls 15 and pins 31. Clamp 28 is pivotalby carried by the side walls l5, snd clamp retainer 29 is spring biased into a locking position onto clamp 28. A toe extension 17 o~ sole plate 35 member 2 has a plurality of apertures 33 for ~lignment with pins 33.
To ~ttach sole plate member 2 to ski 30, elamp ret~iner 29 is moved to release clamp and clamp 28 is pivoted upward. Toe extension 17 is slipped b~tween ~ide walls 15 ~nd pins 31 pass into apertures 33.
Thereafter clamp 2~ is pivoted downward on top of toe extension 17
5 and secured in position by claim retainer 29.
Sole pi!ste member 2, illustrated in Figures 1-4, is designed to be used with the conventional toe binding 11 which includes binding plate 13 having side w~lls 15 of the type "Rottefella."* Front portions 10a and 10b of the l~teral portions 10 and 12 therefore should be thinned off in 10 the front, such that the thickness of the ridges 6 ~nd ~ in this area approaches zero adjacent the junction point with the protruding parts of binding plate 13. See Figure 2. Otherwise, sole plate member 2 in this ~rea would be pressed upwards, so that its bottom face would not come into eontact with binding plate 13. In some instances, however, 15 groove 4 rnay extend forward to engage ~nd straddle the side faces of the ski in the vicinity of side walls 15, since these wal~s norm~ly extend somewhat backwards relative to binding plate 13.
In a preferred form of sole plate member 2~ shown in Figures i-4, opposing side wfllls 6 and 8, defining groove 4, extend from a point 20 slightly rearward of the forwardmost end o~ the shoe upper continuously to the rear edge of the heel of sole plate member 2. Side walls 6 and 8, however, do not extend into toe extension 17, i.e., that portion of the sole in front of the shoe upper which is received in toe binding IL As mentioned above, such continuous side walls provide good lateral 25 ski control through subst~ntially a~l up and down foot motion~ Triangular shaped ~utouts 19 Rre preferably formed in side walls 6 and 8 in the forefoot ~rea to add flexibility to sole plate member 2 during w~lking ~nd skiing. Cutouts 19 slso improve traction during walking.
As best seen in Figure 1, the medial intermediate portion (in the 30 arch ~ea) OI sole plate rnember 2 is provided with a later~lly extended portion 42. Extended portion 42 allows goove 4 to be eontinuously extended backwards all the way to the heel section of sole plate member 2. Without this lateral extension the sole plate member ~ might typically fo31ow da~hed lines 44, thus interrupting groove 4. Medial extension 42 35 also provides additional medi~l support for the foot. Thus, the use of * trade mark : ~`
~6~4~
_ 9 _ full length sole groove 4 in combination with medial extension 42 provides a more stable b~se of support under the foot, better balance medially and laterally over ~he ski, and more direct transmission of medial pressure from foot to ski when controlling turns with the inside edge of the ski.
5 An extension 43 may also be provided on the later~l side of sole plate member 2.
~ igures 5 and 6 illustrate another embodiment of sole plate member a~ in accordance with the present invention. Elements of sole plate member 2' similar to elements of sole plate member 2 will be 10 indicated by like primed numbers. Sole plate member 2' can be described briefly since it is the same as sole plate member 2 sxcept for the extent of ~oove 4'. ~ sole plate member 2', side walls or edges 6', 8' extend to the forwardmost end of sole plate member 2'1 iOe., into toe extension 17'. Toe bindings in accordance with the present invention, 15 which are ad~pted to accomodate sole plate member 2' are shown in Figures 8-11.
Other optional feat~es of a sole in accordance with the present invention ~re shown in Figures 6a and 7. In Figure 6 toe extension 17' is shown with a recess 16 extending below a tr~nsverse edge 18. Tlle 20 depth of recess 16 can be made in v~rying thickness and the longitudinal location of transverse edge 18 can be varied to adapt sole plate member 2' to various bindings having binding plates of various thicknesses.
Figure 7 schematically shows a ski boot or shoe 46 which is provided with R special intermediate buildup or filler 48 along the medial 25 sideO ~iller 48 fills out the sp~ce between the lateral extended portion 42 and the outside of the shoe, and serves as an extelnal extra support for the foot and for the portion of the shoe resting against the sole ~d the sld. It will be ~derstood that in place OI ~n external intermediate build up, the ski boot itself can be made with a lateral 30 extension and provided with ~n intern~l build up or support.
Figures 8 and 9 illustr~te an embodiment o a new toe binding àesign in ~ceordance with the invention, mounted on ~ ski in a ~lamped position on a ~ross~olmtry ski shoe provided with a sole ~late member 2' in a~cord~nee with the invention. This binding 50 is especially 35 developed to be used in connection with the sole plate member 2' ~18~
embodiment having ~ longitudinal groove extending ~11 the way to the front or tip OI the sole, i.e. in$o toe exterLsion 17'.
Binding 50 comprises a binding plate 60, a ~It 70, a clamp 72, and a clamp ret~iner, i.e., a wing nut 76. Pl~te 60 is atta~hed to the 5 top side of the ski 62 by means of screws 63 and has a trRnsverse upright flange 64 across its front end. Plate 60 includes three conventional marks or pins 66, of standard type, "nordic norm," for holding R shoe sole 68, provided with complementary ~qpertures. Upright bolt 70 is attached to plate 60 and bolt 70 p~sses through a hole in 10 clamp 72. The front edge of clamp 72 has a downwQrdly pointing flange 74 which rests against the inside of the flange 64 on the plate 60.
Wing nut 76 is threaded onto bolt 70. A helical spring 78 is placed on bolt 70 between clamp 72 and plate 80. A stopper 80 is formed on the uppermost end of bolt 70. When the shoe is to be fastened 15 is~to binding 50, wing nut 76 is initially screwed upwards. The tip of sole 68 is correctly positioned below the rear edge of the clamp 72 and is tipped somewhat upwards ~bout a transverse pivot axis which will extend substantially through the bolt 70, simultaneously ~.e the lower edge of the fl~nge 74 hits the plate 60. Cl~mp 72 is kept biased 20 against wing nut 76 by means of the spring 78. When sole 68 is ~rranged in binding 50 in engagement with the pins 66, wing nut 76 is ffghtened ~til the clamp 72 is pressed firrnly against the toe extension of sole 68. Clamp 72 is pressed directly above the pins 66 and completely lo~ks the sole. Downwardly poinffng side edges 82 and 84 of sole 68 25 rest against the opposed side edges of plate member 60 and the ski 62. Plate member 60 is preferably designed with a width which substantiQlly corr~3ponds to the width of the ski.
Another embodiment of binding in accordance with the invention, which is shown in ~igu, e 10, difIers ~rom binding 50 shown in Pigures 30 8 and 9 substantially in that threaded wing nut 76 on bolt 70 is replaced by a pivot ~rm 90 journalled on ~ transversely ea~teslding shaft 92 mounted vn the top of bolt 70. Pivot arm 90 is provided with a substantially circ~ar head 94 which is eccentrically mounted on the pivot .shaft ~2. In Figure 10 the binding is ~hown în position for ILse, 35 i.e.9 in locked position7 wherein $he pivot arm is pivoted forw~rdly down to rest against the ski 62. Eccentric head 94 is configured such that the bi~sing point ~aist clflmp 72 in this locked position is behind the axis through bolt~70, in other words, it is locked. Bolt 7û is attached to plate 60 on the ski, suitably ~ith a threaded bushing 96. The 5clamping effect from the pivot arm 90 may be adjusted in a simple fashion by turning the pivot arm to rotate bolt 7Q and thus move bolt 70 upwards or downwflrds with respect to bushing 96. If the pivot arm, for example, is turned one full turn to the right, one can obtain an increased elamping effect grom clamp 72. Clamp 72 has a groove or 10a c~vature 98 in the vicinity above pins 6fi. A transverse line cont~ct with the shoe sole which further contributes to effective clamping is thus obtained. C~vature 98 Rlso allows the shoe sole a better opportunity to attain a curved position during the skiing.
The binding shown in ~igure lU, similar to the binding shown in 15Figures 8 ~nd 9, was especially developed for use in connection with a sole having A longitudinal groove and downwardly pointing portions 82, 24, along opposed side edges. These bindings may, however, without alterations also be used in connection with standard soles. The clamps shown in Figures 8-10 are usually m~de somewhat narrower than the 20front of the sole, such as shown in Figure 9. However, the clamp can be made with substantially the same width and shape as the front portion of the sole, and f~ther can have downw~rdly pointing side walls at opposed sides which straddle against the opposite side edges of the sole.
Such an embodiment of a binding in accordance with the invention is 25shown in Figure 11, which illustrates a binding 58 with an ecc0ntric pivot arm 90 similar to the one shown in Figure 10~ However, in this embodiment, clamp 72 is pivo~ly ~ttached to the plate 60 by means a transverse shaft member 100. Furthermore, clamp 72 has the same width and form as the ~p port;on of the sole and at its opposite side 30edges is provided with downwardly pointing ~langes or walls 102, 104, which straddle the tip (toe extension) of the sole. This embodiment of the binding can be used in ~onnection with the soles in ~ccord~nce with the invention, ~s well as with v~riolLs forms of standard soles. The downwardly pointing side walls 102, 104, will then serve the same or a 35~imilar functioll as the usuAl upw~rdly pointing side walls used on stAndard ` ï~86~L4~
bindingsO
Numerous characteristics and advantages of the inYention have been set forth in ~he foregoing description, together with details of the structure and function of the invention, and the novel features thereof 5 are pointed out in the appended claims. The disclos~e, however, is illustrative only, and changes msy be made in detail, especislly in matters of shflpe~ size and arrangement ~ parts, within the principle of the invention, to the full extent indic~ted by the broad general me~ing of the terms in which the appended claims are expressed.
Sole pi!ste member 2, illustrated in Figures 1-4, is designed to be used with the conventional toe binding 11 which includes binding plate 13 having side w~lls 15 of the type "Rottefella."* Front portions 10a and 10b of the l~teral portions 10 and 12 therefore should be thinned off in 10 the front, such that the thickness of the ridges 6 ~nd ~ in this area approaches zero adjacent the junction point with the protruding parts of binding plate 13. See Figure 2. Otherwise, sole plate member 2 in this ~rea would be pressed upwards, so that its bottom face would not come into eontact with binding plate 13. In some instances, however, 15 groove 4 rnay extend forward to engage ~nd straddle the side faces of the ski in the vicinity of side walls 15, since these wal~s norm~ly extend somewhat backwards relative to binding plate 13.
In a preferred form of sole plate member 2~ shown in Figures i-4, opposing side wfllls 6 and 8, defining groove 4, extend from a point 20 slightly rearward of the forwardmost end o~ the shoe upper continuously to the rear edge of the heel of sole plate member 2. Side walls 6 and 8, however, do not extend into toe extension 17, i.e., that portion of the sole in front of the shoe upper which is received in toe binding IL As mentioned above, such continuous side walls provide good lateral 25 ski control through subst~ntially a~l up and down foot motion~ Triangular shaped ~utouts 19 Rre preferably formed in side walls 6 and 8 in the forefoot ~rea to add flexibility to sole plate member 2 during w~lking ~nd skiing. Cutouts 19 slso improve traction during walking.
As best seen in Figure 1, the medial intermediate portion (in the 30 arch ~ea) OI sole plate rnember 2 is provided with a later~lly extended portion 42. Extended portion 42 allows goove 4 to be eontinuously extended backwards all the way to the heel section of sole plate member 2. Without this lateral extension the sole plate member ~ might typically fo31ow da~hed lines 44, thus interrupting groove 4. Medial extension 42 35 also provides additional medi~l support for the foot. Thus, the use of * trade mark : ~`
~6~4~
_ 9 _ full length sole groove 4 in combination with medial extension 42 provides a more stable b~se of support under the foot, better balance medially and laterally over ~he ski, and more direct transmission of medial pressure from foot to ski when controlling turns with the inside edge of the ski.
5 An extension 43 may also be provided on the later~l side of sole plate member 2.
~ igures 5 and 6 illustrate another embodiment of sole plate member a~ in accordance with the present invention. Elements of sole plate member 2' similar to elements of sole plate member 2 will be 10 indicated by like primed numbers. Sole plate member 2' can be described briefly since it is the same as sole plate member 2 sxcept for the extent of ~oove 4'. ~ sole plate member 2', side walls or edges 6', 8' extend to the forwardmost end of sole plate member 2'1 iOe., into toe extension 17'. Toe bindings in accordance with the present invention, 15 which are ad~pted to accomodate sole plate member 2' are shown in Figures 8-11.
Other optional feat~es of a sole in accordance with the present invention ~re shown in Figures 6a and 7. In Figure 6 toe extension 17' is shown with a recess 16 extending below a tr~nsverse edge 18. Tlle 20 depth of recess 16 can be made in v~rying thickness and the longitudinal location of transverse edge 18 can be varied to adapt sole plate member 2' to various bindings having binding plates of various thicknesses.
Figure 7 schematically shows a ski boot or shoe 46 which is provided with R special intermediate buildup or filler 48 along the medial 25 sideO ~iller 48 fills out the sp~ce between the lateral extended portion 42 and the outside of the shoe, and serves as an extelnal extra support for the foot and for the portion of the shoe resting against the sole ~d the sld. It will be ~derstood that in place OI ~n external intermediate build up, the ski boot itself can be made with a lateral 30 extension and provided with ~n intern~l build up or support.
Figures 8 and 9 illustr~te an embodiment o a new toe binding àesign in ~ceordance with the invention, mounted on ~ ski in a ~lamped position on a ~ross~olmtry ski shoe provided with a sole ~late member 2' in a~cord~nee with the invention. This binding 50 is especially 35 developed to be used in connection with the sole plate member 2' ~18~
embodiment having ~ longitudinal groove extending ~11 the way to the front or tip OI the sole, i.e. in$o toe exterLsion 17'.
Binding 50 comprises a binding plate 60, a ~It 70, a clamp 72, and a clamp ret~iner, i.e., a wing nut 76. Pl~te 60 is atta~hed to the 5 top side of the ski 62 by means of screws 63 and has a trRnsverse upright flange 64 across its front end. Plate 60 includes three conventional marks or pins 66, of standard type, "nordic norm," for holding R shoe sole 68, provided with complementary ~qpertures. Upright bolt 70 is attached to plate 60 and bolt 70 p~sses through a hole in 10 clamp 72. The front edge of clamp 72 has a downwQrdly pointing flange 74 which rests against the inside of the flange 64 on the plate 60.
Wing nut 76 is threaded onto bolt 70. A helical spring 78 is placed on bolt 70 between clamp 72 and plate 80. A stopper 80 is formed on the uppermost end of bolt 70. When the shoe is to be fastened 15 is~to binding 50, wing nut 76 is initially screwed upwards. The tip of sole 68 is correctly positioned below the rear edge of the clamp 72 and is tipped somewhat upwards ~bout a transverse pivot axis which will extend substantially through the bolt 70, simultaneously ~.e the lower edge of the fl~nge 74 hits the plate 60. Cl~mp 72 is kept biased 20 against wing nut 76 by means of the spring 78. When sole 68 is ~rranged in binding 50 in engagement with the pins 66, wing nut 76 is ffghtened ~til the clamp 72 is pressed firrnly against the toe extension of sole 68. Clamp 72 is pressed directly above the pins 66 and completely lo~ks the sole. Downwardly poinffng side edges 82 and 84 of sole 68 25 rest against the opposed side edges of plate member 60 and the ski 62. Plate member 60 is preferably designed with a width which substantiQlly corr~3ponds to the width of the ski.
Another embodiment of binding in accordance with the invention, which is shown in ~igu, e 10, difIers ~rom binding 50 shown in Pigures 30 8 and 9 substantially in that threaded wing nut 76 on bolt 70 is replaced by a pivot ~rm 90 journalled on ~ transversely ea~teslding shaft 92 mounted vn the top of bolt 70. Pivot arm 90 is provided with a substantially circ~ar head 94 which is eccentrically mounted on the pivot .shaft ~2. In Figure 10 the binding is ~hown în position for ILse, 35 i.e.9 in locked position7 wherein $he pivot arm is pivoted forw~rdly down to rest against the ski 62. Eccentric head 94 is configured such that the bi~sing point ~aist clflmp 72 in this locked position is behind the axis through bolt~70, in other words, it is locked. Bolt 7û is attached to plate 60 on the ski, suitably ~ith a threaded bushing 96. The 5clamping effect from the pivot arm 90 may be adjusted in a simple fashion by turning the pivot arm to rotate bolt 7Q and thus move bolt 70 upwards or downwflrds with respect to bushing 96. If the pivot arm, for example, is turned one full turn to the right, one can obtain an increased elamping effect grom clamp 72. Clamp 72 has a groove or 10a c~vature 98 in the vicinity above pins 6fi. A transverse line cont~ct with the shoe sole which further contributes to effective clamping is thus obtained. C~vature 98 Rlso allows the shoe sole a better opportunity to attain a curved position during the skiing.
The binding shown in ~igure lU, similar to the binding shown in 15Figures 8 ~nd 9, was especially developed for use in connection with a sole having A longitudinal groove and downwardly pointing portions 82, 24, along opposed side edges. These bindings may, however, without alterations also be used in connection with standard soles. The clamps shown in Figures 8-10 are usually m~de somewhat narrower than the 20front of the sole, such as shown in Figure 9. However, the clamp can be made with substantially the same width and shape as the front portion of the sole, and f~ther can have downw~rdly pointing side walls at opposed sides which straddle against the opposite side edges of the sole.
Such an embodiment of a binding in accordance with the invention is 25shown in Figure 11, which illustrates a binding 58 with an ecc0ntric pivot arm 90 similar to the one shown in Figure 10~ However, in this embodiment, clamp 72 is pivo~ly ~ttached to the plate 60 by means a transverse shaft member 100. Furthermore, clamp 72 has the same width and form as the ~p port;on of the sole and at its opposite side 30edges is provided with downwardly pointing ~langes or walls 102, 104, which straddle the tip (toe extension) of the sole. This embodiment of the binding can be used in ~onnection with the soles in ~ccord~nce with the invention, ~s well as with v~riolLs forms of standard soles. The downwardly pointing side walls 102, 104, will then serve the same or a 35~imilar functioll as the usuAl upw~rdly pointing side walls used on stAndard ` ï~86~L4~
bindingsO
Numerous characteristics and advantages of the inYention have been set forth in ~he foregoing description, together with details of the structure and function of the invention, and the novel features thereof 5 are pointed out in the appended claims. The disclos~e, however, is illustrative only, and changes msy be made in detail, especislly in matters of shflpe~ size and arrangement ~ parts, within the principle of the invention, to the full extent indic~ted by the broad general me~ing of the terms in which the appended claims are expressed.
Claims (9)
1. An outer sole for a cross-country ski shoe comprising a sole plate member having a toe section, a forefoot section, an arch section, a heel section, an upper surface for attachment to a shoe upper and a lower surface adapted to contact a ski, said lower surface having a pair of transversely spaced, longitudinally extending side walls defining between them a longitudinally extending groove, said groove having a width sufficient for receiving the ski so that said side walls of said groove extend about the side walls of the ski, said groove extending through at least said forefoot, arch and heel sections.
2. An outer sole in accordance with claim 1 wherein said groove extends into the toe section of the sole.
3. An outer sole in accordance with claim 1 wherein said sole plate member includes a toe extension adapted to be coupled to a binding on the ski.
4. An outer sole in accordance with claim 3 wherein said groove extends into said toe extension.
5. An outer sole in accordance with claim 1 or 2 wherein said sole plate member includes a lateral extension portion along the medial side of the sole, said lateral extension portion extending outward past the medial side edge of the ski to which the sole is to be attached and through the arch section of the sole.
6. An outer sole for a cross-country ski shoe comprising a sole plate member having a toe section, a forefoot section, an arch section, a heel section, a toe extension adapted to be coupled to a binding on a ski, an upper surface for attachment to a shoe upper, a lower surface adapted to contact the ski, and a lateral extension portion on the medial side of said arch section, aid lateral extension portion extending past the medial side edge of the ski and through the entire arch section, said lower surface of said sole plate member having a pair of transversly spaced, longitudinally extending side walls defining between them a longitudinally extending groove, said groove having a width sufficient for receiving the ski so that said side walls of said groove extend about the side walls of the groove, said groove extending from said toe section, and through said forefoot, arch and heel sections so that in normal cross-country skiing motions some portion of said side walls of said groove extend about the side walls of ski to provide lateral stability.
7. An outer sole in accordance with claim 6 wherein said side walls of said groove have a depth from the bottom surface of the groove between approximately 4 and 7 mm.
8. An outer sole in accordance with claim 6 or 7 wherein the bottom surface of said groove is substantially flat through substantially its entire extent.
9. A cross-country ski shoe comprising a shoe upper and an outer sole, said outer sole including a sole plate member having a toe section, a forefoot section, an arch section, a heel section, a toe extension adapted to be coupled to a binding on a ski, an upper surface attached to said shoe upper, a lower surface adapted to contact a ski, and a lateral extension portion on the medial side of said arch section, said lateral extension portion extending past the medial side edge of the ski and through the entire arch section, said lower surface of said sole plate member having a pair of transversely spaced, longitudinally extending side walls defining between them a longitudinally extending groove, said groove having a width sufficient for receiving the ski so that said side walls of said groove extend about the side walls of the ski, said groove extending from said toe section and through said forefoot, arch and heel sections so that in normal cross-country skiing motions some portion of said side walls of said groove extends about the side walls of ski to provide lateral stability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000404526A CA1186144A (en) | 1982-06-04 | 1982-06-04 | Sole for cross-country ski shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000404526A CA1186144A (en) | 1982-06-04 | 1982-06-04 | Sole for cross-country ski shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1186144A true CA1186144A (en) | 1985-04-30 |
Family
ID=4122938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000404526A Expired CA1186144A (en) | 1982-06-04 | 1982-06-04 | Sole for cross-country ski shoe |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1186144A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5465506A (en) * | 1994-01-19 | 1995-11-14 | Karhu Usa Inc. | Sandal fastening system |
-
1982
- 1982-06-04 CA CA000404526A patent/CA1186144A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5465506A (en) * | 1994-01-19 | 1995-11-14 | Karhu Usa Inc. | Sandal fastening system |
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