CA1140959A - System for binding a boot to a ski - Google Patents
System for binding a boot to a skiInfo
- Publication number
- CA1140959A CA1140959A CA000332871A CA332871A CA1140959A CA 1140959 A CA1140959 A CA 1140959A CA 000332871 A CA000332871 A CA 000332871A CA 332871 A CA332871 A CA 332871A CA 1140959 A CA1140959 A CA 1140959A
- Authority
- CA
- Canada
- Prior art keywords
- ski
- boot
- improvement
- sole
- cross
- 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
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C9/00—Ski bindings
- A63C9/20—Non-self-releasing bindings with special sole edge holders instead of toe-straps
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B5/00—Footwear for sporting purposes
- A43B5/04—Ski or like boots
- A43B5/0411—Ski or like boots for cross-country
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B5/00—Footwear for sporting purposes
- A43B5/04—Ski or like boots
- A43B5/0496—Ski or like boots boots for touring or hiking skis
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Hydrogenated Pyridines (AREA)
- Tires In General (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A system for binding a boot to a ski comprises a connection allowing the lift of the heel of said boot from the top surface of the ski. Means for laterally holding the boot on the ski extend substan-tially longitudinally with respect to said boot, at least in the zone located beneath the front thereof. One part of said lateral holding means is located beneath the boot and the other part on the top surface of the ski, two parts comprising sections of comple-mentary shape ensuring their cooperation during all the phases of movement of the foot during the practice of skiing. The sole made of supple, but abrasion-resistant material comprises, in the front zone thereof, at least one groove extending substantially longitudi-nally from the tip of the boot at least up to the metatarsal zone.
A system for binding a boot to a ski comprises a connection allowing the lift of the heel of said boot from the top surface of the ski. Means for laterally holding the boot on the ski extend substan-tially longitudinally with respect to said boot, at least in the zone located beneath the front thereof. One part of said lateral holding means is located beneath the boot and the other part on the top surface of the ski, two parts comprising sections of comple-mentary shape ensuring their cooperation during all the phases of movement of the foot during the practice of skiing. The sole made of supple, but abrasion-resistant material comprises, in the front zone thereof, at least one groove extending substantially longitudi-nally from the tip of the boot at least up to the metatarsal zone.
Description
BACKGROUND OF THE INVENTION
The present invention relates to a system for binding a boot to a ski, intended for the practice of langlauf or cross-country ski ing .
Present-day ski boots for practising langlauf or cross-country skiing are being more and more often designed with means for laterally guiding and holding the heel, which must allow a mo-vement of the foot which remains as much as possible in the longi-tudinal axis of the ski, thus ensuring a better guiding of the ski itself To this end, several types of construction are known which hold the heel; in a first embodiment, it consists in a centering V recessed under the length of the heel of the boot, in which a projecting V-section located on the ski is housed. The major drawback of this solution resides in the fact that the centering of the boot on the ski is effected only in the final phase of the movement of the foot when it rests on the ski. This type of centering which takes place only in the last ten millimeters of the movement, does not prevent the possibly off-centered and offset movements of the foot, on particu-larly hilly ground, and it may happen that the desired centering cannot take place due to considerable deformations, particularly in torsion, of the sole of which the V-notch can consequently not fit on the corresponding projecting section on the ski. At best, the sk.ier has to center his heel on the V of the ski himself. This volultaryattempt at centering then risks causing losses of balance, Z5 of speed, therefore of time, which is prejudicial particularly in the case of competition.
Other types of construction employ hard tips, disposed in triangles and set up on the top surface of the ski and penetrating a zone of softer material, located beneath the heel opposite said tips, when the foot reaches the final phase of its movement and when it rests on the ski. In this case, the same drawbacks are found as mentioned hereinabove in addition to that of not having any cen-tering at all, as the tips are planted in the soft part of the heel without any path being able to be imposed on the foot when it moves and comes to rest on the ski. Finally, a mode of guiding the boot on the ski exists, which acts during all the phases of movement of the foot. However, this device requires the assembly of a guide element which extends vertically with respect to the ski and of which the height is at least as great as the height of the lift of the foot when it moves This device, which functions on principle, presents, however, the drawback of being unaesthetic on the one hand and relatively volu-minous on the other hand; moreover, it requires a guide device which is virtually as voluminous, adaptable on the boot itself and becomes awkward for the wearer not ~>nly due to the weight of the assembly, but also due to its bulk, especially as far as the part adaptable on the boot is concerned, which prevents easy wallcing without the skis.
SU~MARY OF THE INVENTION
The purpose of the present invention is to remedy the drawbacks of the different types of construction o the prior art, by providing a ski boot for the practice of langlauf and/or cross-country skiing, of which the centering of the sole is advantageously effected during all the phases of movement of the foot, with respect to the longitudinal axis of the ski and its upper surface. According to another advantageous feature of the invention, this purpose is attained by the use of means of reduced dimensions and weight, of which the functioning remains reliable under all the conditions o use. To this end, a system for binding a boot to a ski comprising, according to known means, located at the front of the boot, a connection allowing the lift of the heel of said boot from the top surfaceal the ~i,is chala~iYed in ~t means for l~lly holding the boot on the ski extend substantial-ly longitudinally with respect to said boot, at least in the zone loca-ted beneath the front thereof, and one part of said lateral holding means is located beneath the boot and the other part on the top surface of the ski, the two parts comprising sections of complementary shape ensuring their cooperation during all the p}~ases of movement of the foot during the practice of skiing.
According to a first mode of construction according to the invention, a langlauf or cross-country ski boot is pToduced, of which the sole made of supple, but abrasion-resistant material, advantageously comprises, in the front zone thereof, at least one groove extending substantially longitudinally from the tip of the boot at least up to the metatarsal zone, where the zone of flexion of the sole is located The boot thus made cooperates with a pro-jecting part of shape corresponding to the groove, located on the surface of the ski so that, when the boot is connected to the ski by its binding, said groove and said projecting part cooperate by enga-gement of the projecting part in the groove. This cooperation is effected not only when the sole of the shoe rests tota~ly on the ski, but also when, during the langlauf walking movement, the foot lifts forwardly and only a small portion of cooperation remains between said groove and said projecting part. Thus, when the foot returns to its flat position on the ski during the final ph~se of its movement, the cooperating parts progressively make contact on all their surfaces and thus ensure the lateral holding of the boot on the ski, by this substantially longitudinal guiding. In this first mode of construction according to the invention, the cooperating parts are composed of sections of complementary shape, enabling the projec-ting part to be fixed longitudinally on the ski without it being neces-sary to proceed with too complicated adjustments of positioning with respect to existing bindings already mounted on the ski.
1~'9~
According to another embodiment of the invention, a boot is made of which the sole comprises a substantially iongitudinal recessed part, advantageously extending over the whole length of the sole and cooperating with a corresponding projecting part, located on the ski. This type of construction allows a constant guiding of the sole during all the phases of movement of the foot, ensuring therefore a lateral holding with respect to the ski. More-overj the arrangement of the recessed part beneath the whole length of the sole presents the advantage of allowing a guiding of the boot facilitating its introduction in the binding. As in the previously described case, the cooperating parts are composed of sections of constant cross section. Nevertheless, said cooperating parts may comprise, without departing from the scope of the invention, sec-tions of variable cross section, so that, as the foot moves towards its final phase (moment when the foot rests on the ski), the surfaces of the cooperating parts in contact are increased to a maximurn in order to give most effective guiding to the ski for its trail in the snow Of course, the cross sections of the sections will be of various natures without departing from the scope of the invention. Thus, they may be of polygonal or circular form. Similarly, it is possible to provide the cooperatingparts with notches for clearing the snow, disposed laterally on each gide of said parts, in order to conserve an effective guiding of the sole and of the ski, said parts being free of snow or ice. Although these notcheg may be arranged independently on the sole or on the projecting part, disposed on the ski, it will be advantageous to provide them on the two elements mentioned above.
Finally, it is possible to improve the guiding and lateral holding of the boot on the ski by making a section whose cross section advan-tageously comprises two vertical sides with respect to the plane of the ski, in addition to so-called centering or guiding sides.
Cooperating parts are thus obtained which procure an appreciable movement of the lateral holding means according to the invention.
As a function of the modes of construction, the holding zone (with its vertical sides) is independently located either on or under the guiding zone of the projecting part located on the ski, fo~ example.
According to a particular mode of construction of the cooperating parts combining the guiding and holding zones, a projecting part is made, located on the ski, comprising a vertical edge on each side of which ribs extend perpendicularly, connecting the top of said edge with the upper surface of the ski by a sloping generatrix.
This mode of construction has the advantage of performing the functions of guiding and lateral holding for a minimum height. It should be noted that it is advantageously possible to provide ski boots with a plurality of these lateral holding means, disposed parallel to one another, for example between said skis and boots.
According to another mode of construction of the invention, lateral holding means are made, of which the coopera-ting parts on boot and skihave sections of variable cross section whilst conserving a constant height These sections represent for example a volume of constant thickness of which the bases are similar triangles, the largest base resting on the top surface of the ski, the height of said triangles being merged with the longitudinal axis of the boot on the ski. With this type of construction, a progres-sive guiding and lateral holding are obtained, for a reduced height of the projecting section acting as a wedge in the sole of the boot, and in addition acting in the manner of herr;ng-bone tread designs (on the tyres of tractors for example), during the phase of movement of the foot when the latter is in passive extension necessary for holding the leg rearwards preparing for the sequence of the following step.
It is obvious that this mode of construction may be applied beneath the whole length of the sole similarly to one of the cases of the figures previously described, with a view to obtaining the same advantages. As a general rule, it is understood that the man skilled in the art may combine one or more of the modes of construction described, so that, without departing from the scope of the invention, he may produce the construction which he considers the most interes-ting from the point of view of performance and/or ease of use Thus, it is not necessarily imperative that the projecting part located on the ski ~or example is made in one piece, but, on the other hand, it is not excluded to dispose a plurality of portions of projecting parts co-axially in line with one another whilst leaving gaps free between said portions. Finally, it is not excluded either to provide for example lateral holding means between boot and ski where the projecting part is disposed on the sole and the recessed part on the ski.
According to another embodiment of the invention7 lateral holding means are further provided ]ocated essentially in the zone of the tip of the sole of the langlau boot When, during the langlauf walking movement, the foot moves forwards and there remains only a small surface of support between the sole and the top surface of the ski, localised by a zone of contact from the binding means to the toe support zone, the lack of lateral holding of the foot is then maximum.
This lack of lateral holding in this determined position of the foot is particularly prejudicial for the immediately following phase when the foot returns on the ski It is therefore important for the foot to be 2S directly guided with a maximum of efficiency for its return, flat on the ski, to be effected along the longitudinal axis of the ski To this end, the system for binding a boot to a langlauf or cross-country ski further comprises lateral holding means extending substantially longitudinally with respect to said boot essentially in a zone of contact of the sole from the means for binding the boot to the ll~V~S9 ski up to the to support zone, said lateral holding means comprising intercooperating parts composed of sections of complementary shape of which volume decreases from front to reaT of the boot.
BRIEF DESCRIPTION OF THF DRAWINGS
The invention will be more readily understood on reading the following description with reference to the accompanying drawings, in which:
Figure 1 is a perspective view of a binding system according to the invention in which a boot sole in thick lines comprises one part of the lateral holding means disposed in the front zone, and in which the complementary part of said means is disposed on the ski.
Figure 2 is a perspective view of another binding system according to the invention in which the boot sole comprises one part of the lateral holding means disposed under the whole length of said sole and in which the complementary part of said means is disposed on the ski.
Figure 3 is a perspecti~e view of another system for binding a boot on a ski in which the boot sole comprises one part of the lateral holding means disposed in the front zone having a section of constant height, but of variable section, and in which the complementary part Z of said means is disposed on the ski.
Figures 4 to 11 are perspective views of different types of projecting cooperating parts of the lateral holding means which ~1ay be arranged on the top surface of the ski Figure 12 is a perspective view of a binding system where the boot is about to be placed on the ski and which advantageously comprises a particular arrangement of a plurality of complete means for laterally holding the sole.
Figure 13 is a view in partial longitudinal section of another variant embodiment of a system for binding a boot to a ski Figure 14 is a view in perspective of another varia.nt of a binding system according to the invention 0~59 Figure 15 is a view in partial longitudinal section of the front of the boot fixed on the ski in position of use, flat, by the binding system of Figure 14.
Figure 16 is a schematic view in elevation of the binding system of Figure 14 showing the permanence of cooperation of the boot with the ski due to the lateral holding means located in said front end zone of the sole.
Figure 17 is a view in perpective of a binding assembly according to the invention made on apresently existing langlauf boot.
Figure 18 is a view in partial longitudinal section of the front of the boot shown in Figure 17, showing the possible variant embodiment of binding system according to the invention on a presently existing langlauf boot.
Figures 19 and 20 are views in elevation and in plan respectively of a variant embodiment of the holding means of a binding system accor-ding to the invention.
Figures 21 and 22 are views in elevation and plan respectively of another variant embodiment of the holding means.
DESCRIPTION OF THE PREFERRED EMBODIhaENTS
Referring now to the drawings, Figure 1 shows a system binding a langlauf boot 3 to a ski 1 via a binding 2 of known type.
The particularity of the assembly thus composed res~des in the fact that the sole 4 of the langlauf boot 3 advantageously comprises in its front part 4a, located beneath the front zone of the skier's foot, a longitudinal groove 5 of which the cross-section is, for example, triangular. This groove 5 then cooperates with a projecting longi-tudinal part 6 of triangular cross section disposed on the ski in the zone corresponding to the front-foot support zone, so that, when the ski0r's foot moves, the two recessed and projecting parts fit in each other The cooperation between the ski and the boot made via s~id - 114V~S9 recessed and projecting parts then ensures a permanent guiding and a lateral holding of the boot on the ski during all the phases of movement of the foot. In fact, the cooperating parts 5 and 6 act, according to the arrangement of the invention, from the front zone of the sole of the boot when the foot is in position of passive exten-sion (phase when the foot is essentially supported on the toes) to at least the zone of the sole corresponding to the metatarsal and tarsal supports of the foot when it is placed on the ski. This zone of greater width of the foot being progressively and continuously guided by the centering, (V-shaped in the case of Figure l), of the lateral holding means, the risks OI getting out of true of the plantar arch due to hilly course or ground, are reduced and thus avoid slipping of the heel 4c with respect to the top surface la of the ski In the second embodiment shown in Figure 2, a langlauf boot 30 is provided with another type of binding 20, in order to indi-cate that the assembly according to the invention may be used in all types of langlauf or cross-country skiing boots. In this case, the lateral holding means composed of the recessed part 50 under the sole 40 and projecting part 60 cooperating therewith, extend beneath the whole length of the sole 40, from the zone of the tip 40b coope-rating with the binding 20 of known type up to the zone of theheel 40c, without discontinuing. Consequently, not-only the guiding of the boot is advantageously effected during all the phases of movement of the foot, but this arrangement further provides for the skier a guiding of his boot 30 as soon as it is fitted in its binding 20 It will be generally noted that the cooperating parts of complementary form have, in the embodiments described, sections of triangular form which are constant over the whole of their length These forms of constant section may, however, be various as shown in Figures 4, 5, 6 and 11 where the cooperating projecting parts are shown,. which may be used without departing from the scope of the invention, on condition that the complementary recessed shape is made beneath the sole of the boot. However, the two embodiments described with reference to Eigures 1 and 2 may be provided with cooperating projecting parts, intended to be fixed to the ski~of which the sections will vary over the length of said parts, as shown in Figures 7 and 8.
The cooperating parts 600, 610 shown respectively comprise sections 601, 611 which increase towards surfaces 601' and 611', larger than the preceding ones and located towards the rear end of said parts 600 and 610. This variation in section advantageously enables the lateral holding of the boot to be increased as it rests on the ski due to the increase in the surface of fit of the two complementary coope-rating parts.
Finally, Figure 9 shows a possibility of improving the penetration of the projecting part 620 in a corresponding V-groove in the sole of a boot according to the invention. In fact, notches 621 are cut on the converging walls 622, widening towards the base of said parts 620, thus enabling the snow or ice lodged in the groove of the sole to be evacuated when the projecting part penetrates in the recessed part It goes without saying that this type of c~nfiguration of notch i~ applicable to the other types of projecting parts. Simi-larly, it is possible to arrange such notches perpendicularly to the recessed part of the sole It is also possible, in the variant embo-diments shown in Figures 1 and 2, advantageously to use the lateral holding means of which the cooperating parts present a zone perpen-dicular to the plane of the ski in the form of their sections (Figures 6, 10, 11). In this mode of construction, the two main functions which are demanded of said lateral holding meang are advantageously materialised, namely a guiding or centering in a first stage of the penetration of the projecting cooperating part (6", 630, 640) in the corresponding recessed cooperating part, then in a second and last stage a lateral holding of the recessed part fitted on the projecting part In the case of Figure 6 for example, the upper triangular portion 7" of the projecting cooperating part 6" serves as wedge for introduction in the complementary recessed cooperating part located beneath the sole, then as the sole moves on the ski, the vertical walls 8" and 9" of the cooperating part located beneath the upper tri-angular part 7" are housed in the corresponding recessed parallele-pipedic portion of the sole. The cooperating projecting part 640 shown in Figure 11 acts similarly to the previously described case, except that an upper parallelepipedic portion 641 forming ridge is located above a lower triangular guiding portion 644. In this case, the ridge 641 firstly comes into contact with the sloping walls of the triangular guiding section located at the inlet of the groove of the sole, this ensuring the guiding of said sole, then the movement of the sole continuing on the ski, the vertical and lateral walls 642 and 643 of said ridge 641 are housed in the recessed zone of rectangular section of the sole.
In the case of Figure 10, an advantageous arrangement of the projecting cooperating part 630 has been developed so that ~ the vertical walled po~tions for the lateral holding function and the triangular (or substantially triangular) section port~ons for the guiding function are combined together to a given height. To this end, the projecting part 630 is composed of a central web 631 per-pendicular to the ski, for example of constant height. Perpendicu-larly to the central web 631 and from its vertical walls 632 and 633, ribs 634 extend tranversely from the top 636 of said ridge to-wards the base of the part 630 along a generatrix 635. The advan-tage of this type of construction resides in the fact that not only the functions of guiding and of lateral holding are performed respec-tively by the central web 631 and the transverse ribs 634, but, moreover, these same ribs also ensure a support stop for starting the stride when the corresponding complementary part of the sole fits on said part 630.
Figure 3 shows a particular type of embodiment o a system for binding a langlauf boot 300 toa ski 1, with the aid, on the one hand, of a binding 2 of known type and of holding means composed accor-ding to the invention of a recessed cooperating part 500 in the front zone of the sole 400 and of a complementary projecting cooperating part 610 fixed in corresponding manner on the ski, s~n the other hand.
As in the cases described beforehand, the axis of said holding means is disposed in the longitudinal direction of the boot In this embodiment, the projecting cooperating part 610 advantage-ously forms a solid of which the volume is limited by a large trian-gular base adjacent the ski and a small, likewise triangular base distant from the preceding one by a preferably constant height. The two bases are then joined together respectively, according to Figure 8 which shows a portion of the projecting part 610 cut through a trans-verse plane, by lateral inclined walls 612, 612', the transverse section of said solid 610 varying along surfaces increasing towards the rear from 611 to 611' for example. In complementary manner, the same volume is arranged in the solc producing the recessed cooperating part 500. The advantage of this type of construction is obvious; in fact, for a reduced height of the projecting part, a pro-gressive guiding and centering are obtained, and a lateral holding increasing as the foot returns on the ski. Moreover, as it has already been set forth, a support stop is obtained for starting the following step proportional to the quantity of surface of the cooperating parts 500, 610 coming into contact with each other when the foot is moving It is possible, without departing from the scope of the invention, to extend these cooperating parts from the ~one of the flexible bar coming into the binding 2 to the zone of the heel 400c for example.
Figures 12 and 13 show possible combinations of structures for the binding system according to the invention. The binding system shown in Figure 12 comprises, in the front zone of the sole 701, two lateral holding means, disposed parallel to each other, whilst in the zone of the heel, there is located a centering V
known per se, larger than the first two lateral holding means men-tioned The boot 700 is shown in its phase returning flat on the ski 1, indicated by arrow 708 The lateral holding means located in the front zone of the sole 701 are constituted by two longitudinal V-sec-tioned grooves 702 in the sole cooperating with two V-sectioned projecting parts 703 disposed parallel to each other. It will be noted that, during the whole phase of the boot returning flat on the ski, said boot is already guided and centered in its front part and is finally centered at the moment when -~he heel 706, likewise provided with a groove 704, arrives in contact with the V-sectioned projecting part 705 fixed to the ski The binding assembly shown in Figure 13 comprises a longitudinal groove 802 of any section and shape, disposed beneath thewholelength of the sole 801 of the boot and with which a plurality of projecting cooperating parts 803 fast with theski cooperate. These projecting parts 803 form a discontinuous longitudinal series of surfaces of contact, which i6 advantageous from the point of view of lightening the system. Despite this discontinuity, the guiding and centering of the sole 801 always remain ensured as shown by the various positions 804 (in dashed and dotted lines) and 805 (in broken lines) of the boot when the foot is moving.
Figures 14 to 16 show a system for binding a langlauf boot 3 on a ski 1 via a binding 2 of known type The particularity of the system thus formed resides in the fact that the sole 4 of the l~nglauf boot 3 advantageously comprises in its front end part 4a a longitudinal groove 5 extending from the end 4a of the sole up to at least the zone of support of said sole corresponding to the toes.
1~4~59 This groove 5 extends beneath the whole length of the sole. This groove 5 of triangular section cooperates, when the boot 3 is fixed on the ski 1, with a projecting part 6 of complemen-tary shape to said groove, fixed on the ski in the zone correspon-ding to the zone of contact 4a of the sole from the binding to the toe support zone. The projecting part 6 is therefore immediately adja-cent the binding Z so that, when the skier's foot moves, the reces-sed part 5 and projecting part 6 composing the lateral holding means fit in each other. In fact, even when the foot is in position of passive extension, i. e. the foot is essentially supported on the toes, the cooperation between the end of sole and the ski remains ensured due to the fact that the parts 5 and 6 are located in this toe support zone.
Due to the invention, this cooperation is effected all the better as the section of these parts is consituted in its front part, concerning the projecting section 6, by a portion of a frustrum of a cone or pyra~nid 6a of which the large base 6b (of triangular section inthe case of the Figure) is located on the binding 2 side and the small base 6c towards the rear of the boot. Consequently, and precisely during the phase of passive extension o the foot, shown in Figure 16, at the moment when the sole iB in position of minimum contact with the ski, the guiding and lateral holding of this sole remain maintained from the beginning of the phase of return of the foot flat on the ski. The front part 6a whose section decreases towards the rear of the projecting section 6 may be extended rearwardly by a prismatic or cylindrical section 6d, there-fore of constant height.
Figure 15 clearly shows that the front end zone 4a of the sole 4 is centered on the ski with a maximum efficiency determ.ined by the fact that the sections of the cooperating parts S and 6 comprise volumes of cross section decreasing from front to rear, making it possible to obtain a maximum guiding and centering for a minimum surface of contact of the sole on the ski Figures 17 and 18 advantageously show the adaptation of the binding system according to the invention to a model of langlauf boot and binding presently existing on the market.
~ langlauf ski boot 10 having a sole 12 of the type stan-dard 35, standard "Lin", standard 50, etc., is mounted on a ski 1 and fixed thereto by a binding 11 of type corresponding to the stan-clard of the sole end 12a.
The assembly thus made comprises, similarly to the preceding example, lateral holding means located in the front end zone of the sole to guarantee a maximum cooperation between recessed parts 14 and projecting parts 13, for a minimum surface of contact of the sole 12 on the ski 1. On this occasion, a projecting part 13 is pro-vided, of conical or pyramidal form, located on the longitudinal axis of the ski and which cooperates with a recessed part 14 of cor-responding conical or pyramidal form, advantageously located in the centre of the width of the tongue constituting the end 12a of the sole 12 From these ]ateral holding means of conical or pyramiclal form, longitudinal sections 13a and 14a of triangular cross section extend.
These sections which are also respectively recessed and projecting and of triangular cross section substantially less than that of the cones or pyramids 13, 14, ensure the continuity of the centering and guiding during the phase when the foot returns into flat position on the ski (indicated by arrow 15)~ effectecl at the beginning thereof by the parts 13, 14 cooperating with each other. The recessed part 14 may advantageously be open so that the snow which might lodge therein may be driven out In thi s case, the embodiment of the system according to the invention would not be limited to recessed and projecting parts of conical format, but all shapes, of which the volume decreases from front to rear allowing a maximum of centering for the position of minimum contact of the sole on the ski, remain perfectly adequate 114~59 to be covered by the invention Figures 19 to 22 show two possible variant embodiments of projecting sections 16 and 17 which are beneath the front end zone of the sole and cooperate with corresponding recessed sections Inade in the sole.
In Figures 21 and 22 in particular, the front portion 17b, of rearwardly decreasing section, of the projecting section 17 advan-tageously con~prises a stem 17a engaging in the groove of the corres-ponding sole when said latter is in its phase returning into flat posi-tion on the ski.
It is obvious that the invention can find its full advantage only by the association of the lateral holding means in the front end zone of the sole with those of the lateral holding means extending beneath the metatarsal zone or even beneath the zone of theheel.
The present invention relates to a system for binding a boot to a ski, intended for the practice of langlauf or cross-country ski ing .
Present-day ski boots for practising langlauf or cross-country skiing are being more and more often designed with means for laterally guiding and holding the heel, which must allow a mo-vement of the foot which remains as much as possible in the longi-tudinal axis of the ski, thus ensuring a better guiding of the ski itself To this end, several types of construction are known which hold the heel; in a first embodiment, it consists in a centering V recessed under the length of the heel of the boot, in which a projecting V-section located on the ski is housed. The major drawback of this solution resides in the fact that the centering of the boot on the ski is effected only in the final phase of the movement of the foot when it rests on the ski. This type of centering which takes place only in the last ten millimeters of the movement, does not prevent the possibly off-centered and offset movements of the foot, on particu-larly hilly ground, and it may happen that the desired centering cannot take place due to considerable deformations, particularly in torsion, of the sole of which the V-notch can consequently not fit on the corresponding projecting section on the ski. At best, the sk.ier has to center his heel on the V of the ski himself. This volultaryattempt at centering then risks causing losses of balance, Z5 of speed, therefore of time, which is prejudicial particularly in the case of competition.
Other types of construction employ hard tips, disposed in triangles and set up on the top surface of the ski and penetrating a zone of softer material, located beneath the heel opposite said tips, when the foot reaches the final phase of its movement and when it rests on the ski. In this case, the same drawbacks are found as mentioned hereinabove in addition to that of not having any cen-tering at all, as the tips are planted in the soft part of the heel without any path being able to be imposed on the foot when it moves and comes to rest on the ski. Finally, a mode of guiding the boot on the ski exists, which acts during all the phases of movement of the foot. However, this device requires the assembly of a guide element which extends vertically with respect to the ski and of which the height is at least as great as the height of the lift of the foot when it moves This device, which functions on principle, presents, however, the drawback of being unaesthetic on the one hand and relatively volu-minous on the other hand; moreover, it requires a guide device which is virtually as voluminous, adaptable on the boot itself and becomes awkward for the wearer not ~>nly due to the weight of the assembly, but also due to its bulk, especially as far as the part adaptable on the boot is concerned, which prevents easy wallcing without the skis.
SU~MARY OF THE INVENTION
The purpose of the present invention is to remedy the drawbacks of the different types of construction o the prior art, by providing a ski boot for the practice of langlauf and/or cross-country skiing, of which the centering of the sole is advantageously effected during all the phases of movement of the foot, with respect to the longitudinal axis of the ski and its upper surface. According to another advantageous feature of the invention, this purpose is attained by the use of means of reduced dimensions and weight, of which the functioning remains reliable under all the conditions o use. To this end, a system for binding a boot to a ski comprising, according to known means, located at the front of the boot, a connection allowing the lift of the heel of said boot from the top surfaceal the ~i,is chala~iYed in ~t means for l~lly holding the boot on the ski extend substantial-ly longitudinally with respect to said boot, at least in the zone loca-ted beneath the front thereof, and one part of said lateral holding means is located beneath the boot and the other part on the top surface of the ski, the two parts comprising sections of complementary shape ensuring their cooperation during all the p}~ases of movement of the foot during the practice of skiing.
According to a first mode of construction according to the invention, a langlauf or cross-country ski boot is pToduced, of which the sole made of supple, but abrasion-resistant material, advantageously comprises, in the front zone thereof, at least one groove extending substantially longitudinally from the tip of the boot at least up to the metatarsal zone, where the zone of flexion of the sole is located The boot thus made cooperates with a pro-jecting part of shape corresponding to the groove, located on the surface of the ski so that, when the boot is connected to the ski by its binding, said groove and said projecting part cooperate by enga-gement of the projecting part in the groove. This cooperation is effected not only when the sole of the shoe rests tota~ly on the ski, but also when, during the langlauf walking movement, the foot lifts forwardly and only a small portion of cooperation remains between said groove and said projecting part. Thus, when the foot returns to its flat position on the ski during the final ph~se of its movement, the cooperating parts progressively make contact on all their surfaces and thus ensure the lateral holding of the boot on the ski, by this substantially longitudinal guiding. In this first mode of construction according to the invention, the cooperating parts are composed of sections of complementary shape, enabling the projec-ting part to be fixed longitudinally on the ski without it being neces-sary to proceed with too complicated adjustments of positioning with respect to existing bindings already mounted on the ski.
1~'9~
According to another embodiment of the invention, a boot is made of which the sole comprises a substantially iongitudinal recessed part, advantageously extending over the whole length of the sole and cooperating with a corresponding projecting part, located on the ski. This type of construction allows a constant guiding of the sole during all the phases of movement of the foot, ensuring therefore a lateral holding with respect to the ski. More-overj the arrangement of the recessed part beneath the whole length of the sole presents the advantage of allowing a guiding of the boot facilitating its introduction in the binding. As in the previously described case, the cooperating parts are composed of sections of constant cross section. Nevertheless, said cooperating parts may comprise, without departing from the scope of the invention, sec-tions of variable cross section, so that, as the foot moves towards its final phase (moment when the foot rests on the ski), the surfaces of the cooperating parts in contact are increased to a maximurn in order to give most effective guiding to the ski for its trail in the snow Of course, the cross sections of the sections will be of various natures without departing from the scope of the invention. Thus, they may be of polygonal or circular form. Similarly, it is possible to provide the cooperatingparts with notches for clearing the snow, disposed laterally on each gide of said parts, in order to conserve an effective guiding of the sole and of the ski, said parts being free of snow or ice. Although these notcheg may be arranged independently on the sole or on the projecting part, disposed on the ski, it will be advantageous to provide them on the two elements mentioned above.
Finally, it is possible to improve the guiding and lateral holding of the boot on the ski by making a section whose cross section advan-tageously comprises two vertical sides with respect to the plane of the ski, in addition to so-called centering or guiding sides.
Cooperating parts are thus obtained which procure an appreciable movement of the lateral holding means according to the invention.
As a function of the modes of construction, the holding zone (with its vertical sides) is independently located either on or under the guiding zone of the projecting part located on the ski, fo~ example.
According to a particular mode of construction of the cooperating parts combining the guiding and holding zones, a projecting part is made, located on the ski, comprising a vertical edge on each side of which ribs extend perpendicularly, connecting the top of said edge with the upper surface of the ski by a sloping generatrix.
This mode of construction has the advantage of performing the functions of guiding and lateral holding for a minimum height. It should be noted that it is advantageously possible to provide ski boots with a plurality of these lateral holding means, disposed parallel to one another, for example between said skis and boots.
According to another mode of construction of the invention, lateral holding means are made, of which the coopera-ting parts on boot and skihave sections of variable cross section whilst conserving a constant height These sections represent for example a volume of constant thickness of which the bases are similar triangles, the largest base resting on the top surface of the ski, the height of said triangles being merged with the longitudinal axis of the boot on the ski. With this type of construction, a progres-sive guiding and lateral holding are obtained, for a reduced height of the projecting section acting as a wedge in the sole of the boot, and in addition acting in the manner of herr;ng-bone tread designs (on the tyres of tractors for example), during the phase of movement of the foot when the latter is in passive extension necessary for holding the leg rearwards preparing for the sequence of the following step.
It is obvious that this mode of construction may be applied beneath the whole length of the sole similarly to one of the cases of the figures previously described, with a view to obtaining the same advantages. As a general rule, it is understood that the man skilled in the art may combine one or more of the modes of construction described, so that, without departing from the scope of the invention, he may produce the construction which he considers the most interes-ting from the point of view of performance and/or ease of use Thus, it is not necessarily imperative that the projecting part located on the ski ~or example is made in one piece, but, on the other hand, it is not excluded to dispose a plurality of portions of projecting parts co-axially in line with one another whilst leaving gaps free between said portions. Finally, it is not excluded either to provide for example lateral holding means between boot and ski where the projecting part is disposed on the sole and the recessed part on the ski.
According to another embodiment of the invention7 lateral holding means are further provided ]ocated essentially in the zone of the tip of the sole of the langlau boot When, during the langlauf walking movement, the foot moves forwards and there remains only a small surface of support between the sole and the top surface of the ski, localised by a zone of contact from the binding means to the toe support zone, the lack of lateral holding of the foot is then maximum.
This lack of lateral holding in this determined position of the foot is particularly prejudicial for the immediately following phase when the foot returns on the ski It is therefore important for the foot to be 2S directly guided with a maximum of efficiency for its return, flat on the ski, to be effected along the longitudinal axis of the ski To this end, the system for binding a boot to a langlauf or cross-country ski further comprises lateral holding means extending substantially longitudinally with respect to said boot essentially in a zone of contact of the sole from the means for binding the boot to the ll~V~S9 ski up to the to support zone, said lateral holding means comprising intercooperating parts composed of sections of complementary shape of which volume decreases from front to reaT of the boot.
BRIEF DESCRIPTION OF THF DRAWINGS
The invention will be more readily understood on reading the following description with reference to the accompanying drawings, in which:
Figure 1 is a perspective view of a binding system according to the invention in which a boot sole in thick lines comprises one part of the lateral holding means disposed in the front zone, and in which the complementary part of said means is disposed on the ski.
Figure 2 is a perspective view of another binding system according to the invention in which the boot sole comprises one part of the lateral holding means disposed under the whole length of said sole and in which the complementary part of said means is disposed on the ski.
Figure 3 is a perspecti~e view of another system for binding a boot on a ski in which the boot sole comprises one part of the lateral holding means disposed in the front zone having a section of constant height, but of variable section, and in which the complementary part Z of said means is disposed on the ski.
Figures 4 to 11 are perspective views of different types of projecting cooperating parts of the lateral holding means which ~1ay be arranged on the top surface of the ski Figure 12 is a perspective view of a binding system where the boot is about to be placed on the ski and which advantageously comprises a particular arrangement of a plurality of complete means for laterally holding the sole.
Figure 13 is a view in partial longitudinal section of another variant embodiment of a system for binding a boot to a ski Figure 14 is a view in perspective of another varia.nt of a binding system according to the invention 0~59 Figure 15 is a view in partial longitudinal section of the front of the boot fixed on the ski in position of use, flat, by the binding system of Figure 14.
Figure 16 is a schematic view in elevation of the binding system of Figure 14 showing the permanence of cooperation of the boot with the ski due to the lateral holding means located in said front end zone of the sole.
Figure 17 is a view in perpective of a binding assembly according to the invention made on apresently existing langlauf boot.
Figure 18 is a view in partial longitudinal section of the front of the boot shown in Figure 17, showing the possible variant embodiment of binding system according to the invention on a presently existing langlauf boot.
Figures 19 and 20 are views in elevation and in plan respectively of a variant embodiment of the holding means of a binding system accor-ding to the invention.
Figures 21 and 22 are views in elevation and plan respectively of another variant embodiment of the holding means.
DESCRIPTION OF THE PREFERRED EMBODIhaENTS
Referring now to the drawings, Figure 1 shows a system binding a langlauf boot 3 to a ski 1 via a binding 2 of known type.
The particularity of the assembly thus composed res~des in the fact that the sole 4 of the langlauf boot 3 advantageously comprises in its front part 4a, located beneath the front zone of the skier's foot, a longitudinal groove 5 of which the cross-section is, for example, triangular. This groove 5 then cooperates with a projecting longi-tudinal part 6 of triangular cross section disposed on the ski in the zone corresponding to the front-foot support zone, so that, when the ski0r's foot moves, the two recessed and projecting parts fit in each other The cooperation between the ski and the boot made via s~id - 114V~S9 recessed and projecting parts then ensures a permanent guiding and a lateral holding of the boot on the ski during all the phases of movement of the foot. In fact, the cooperating parts 5 and 6 act, according to the arrangement of the invention, from the front zone of the sole of the boot when the foot is in position of passive exten-sion (phase when the foot is essentially supported on the toes) to at least the zone of the sole corresponding to the metatarsal and tarsal supports of the foot when it is placed on the ski. This zone of greater width of the foot being progressively and continuously guided by the centering, (V-shaped in the case of Figure l), of the lateral holding means, the risks OI getting out of true of the plantar arch due to hilly course or ground, are reduced and thus avoid slipping of the heel 4c with respect to the top surface la of the ski In the second embodiment shown in Figure 2, a langlauf boot 30 is provided with another type of binding 20, in order to indi-cate that the assembly according to the invention may be used in all types of langlauf or cross-country skiing boots. In this case, the lateral holding means composed of the recessed part 50 under the sole 40 and projecting part 60 cooperating therewith, extend beneath the whole length of the sole 40, from the zone of the tip 40b coope-rating with the binding 20 of known type up to the zone of theheel 40c, without discontinuing. Consequently, not-only the guiding of the boot is advantageously effected during all the phases of movement of the foot, but this arrangement further provides for the skier a guiding of his boot 30 as soon as it is fitted in its binding 20 It will be generally noted that the cooperating parts of complementary form have, in the embodiments described, sections of triangular form which are constant over the whole of their length These forms of constant section may, however, be various as shown in Figures 4, 5, 6 and 11 where the cooperating projecting parts are shown,. which may be used without departing from the scope of the invention, on condition that the complementary recessed shape is made beneath the sole of the boot. However, the two embodiments described with reference to Eigures 1 and 2 may be provided with cooperating projecting parts, intended to be fixed to the ski~of which the sections will vary over the length of said parts, as shown in Figures 7 and 8.
The cooperating parts 600, 610 shown respectively comprise sections 601, 611 which increase towards surfaces 601' and 611', larger than the preceding ones and located towards the rear end of said parts 600 and 610. This variation in section advantageously enables the lateral holding of the boot to be increased as it rests on the ski due to the increase in the surface of fit of the two complementary coope-rating parts.
Finally, Figure 9 shows a possibility of improving the penetration of the projecting part 620 in a corresponding V-groove in the sole of a boot according to the invention. In fact, notches 621 are cut on the converging walls 622, widening towards the base of said parts 620, thus enabling the snow or ice lodged in the groove of the sole to be evacuated when the projecting part penetrates in the recessed part It goes without saying that this type of c~nfiguration of notch i~ applicable to the other types of projecting parts. Simi-larly, it is possible to arrange such notches perpendicularly to the recessed part of the sole It is also possible, in the variant embo-diments shown in Figures 1 and 2, advantageously to use the lateral holding means of which the cooperating parts present a zone perpen-dicular to the plane of the ski in the form of their sections (Figures 6, 10, 11). In this mode of construction, the two main functions which are demanded of said lateral holding meang are advantageously materialised, namely a guiding or centering in a first stage of the penetration of the projecting cooperating part (6", 630, 640) in the corresponding recessed cooperating part, then in a second and last stage a lateral holding of the recessed part fitted on the projecting part In the case of Figure 6 for example, the upper triangular portion 7" of the projecting cooperating part 6" serves as wedge for introduction in the complementary recessed cooperating part located beneath the sole, then as the sole moves on the ski, the vertical walls 8" and 9" of the cooperating part located beneath the upper tri-angular part 7" are housed in the corresponding recessed parallele-pipedic portion of the sole. The cooperating projecting part 640 shown in Figure 11 acts similarly to the previously described case, except that an upper parallelepipedic portion 641 forming ridge is located above a lower triangular guiding portion 644. In this case, the ridge 641 firstly comes into contact with the sloping walls of the triangular guiding section located at the inlet of the groove of the sole, this ensuring the guiding of said sole, then the movement of the sole continuing on the ski, the vertical and lateral walls 642 and 643 of said ridge 641 are housed in the recessed zone of rectangular section of the sole.
In the case of Figure 10, an advantageous arrangement of the projecting cooperating part 630 has been developed so that ~ the vertical walled po~tions for the lateral holding function and the triangular (or substantially triangular) section port~ons for the guiding function are combined together to a given height. To this end, the projecting part 630 is composed of a central web 631 per-pendicular to the ski, for example of constant height. Perpendicu-larly to the central web 631 and from its vertical walls 632 and 633, ribs 634 extend tranversely from the top 636 of said ridge to-wards the base of the part 630 along a generatrix 635. The advan-tage of this type of construction resides in the fact that not only the functions of guiding and of lateral holding are performed respec-tively by the central web 631 and the transverse ribs 634, but, moreover, these same ribs also ensure a support stop for starting the stride when the corresponding complementary part of the sole fits on said part 630.
Figure 3 shows a particular type of embodiment o a system for binding a langlauf boot 300 toa ski 1, with the aid, on the one hand, of a binding 2 of known type and of holding means composed accor-ding to the invention of a recessed cooperating part 500 in the front zone of the sole 400 and of a complementary projecting cooperating part 610 fixed in corresponding manner on the ski, s~n the other hand.
As in the cases described beforehand, the axis of said holding means is disposed in the longitudinal direction of the boot In this embodiment, the projecting cooperating part 610 advantage-ously forms a solid of which the volume is limited by a large trian-gular base adjacent the ski and a small, likewise triangular base distant from the preceding one by a preferably constant height. The two bases are then joined together respectively, according to Figure 8 which shows a portion of the projecting part 610 cut through a trans-verse plane, by lateral inclined walls 612, 612', the transverse section of said solid 610 varying along surfaces increasing towards the rear from 611 to 611' for example. In complementary manner, the same volume is arranged in the solc producing the recessed cooperating part 500. The advantage of this type of construction is obvious; in fact, for a reduced height of the projecting part, a pro-gressive guiding and centering are obtained, and a lateral holding increasing as the foot returns on the ski. Moreover, as it has already been set forth, a support stop is obtained for starting the following step proportional to the quantity of surface of the cooperating parts 500, 610 coming into contact with each other when the foot is moving It is possible, without departing from the scope of the invention, to extend these cooperating parts from the ~one of the flexible bar coming into the binding 2 to the zone of the heel 400c for example.
Figures 12 and 13 show possible combinations of structures for the binding system according to the invention. The binding system shown in Figure 12 comprises, in the front zone of the sole 701, two lateral holding means, disposed parallel to each other, whilst in the zone of the heel, there is located a centering V
known per se, larger than the first two lateral holding means men-tioned The boot 700 is shown in its phase returning flat on the ski 1, indicated by arrow 708 The lateral holding means located in the front zone of the sole 701 are constituted by two longitudinal V-sec-tioned grooves 702 in the sole cooperating with two V-sectioned projecting parts 703 disposed parallel to each other. It will be noted that, during the whole phase of the boot returning flat on the ski, said boot is already guided and centered in its front part and is finally centered at the moment when -~he heel 706, likewise provided with a groove 704, arrives in contact with the V-sectioned projecting part 705 fixed to the ski The binding assembly shown in Figure 13 comprises a longitudinal groove 802 of any section and shape, disposed beneath thewholelength of the sole 801 of the boot and with which a plurality of projecting cooperating parts 803 fast with theski cooperate. These projecting parts 803 form a discontinuous longitudinal series of surfaces of contact, which i6 advantageous from the point of view of lightening the system. Despite this discontinuity, the guiding and centering of the sole 801 always remain ensured as shown by the various positions 804 (in dashed and dotted lines) and 805 (in broken lines) of the boot when the foot is moving.
Figures 14 to 16 show a system for binding a langlauf boot 3 on a ski 1 via a binding 2 of known type The particularity of the system thus formed resides in the fact that the sole 4 of the l~nglauf boot 3 advantageously comprises in its front end part 4a a longitudinal groove 5 extending from the end 4a of the sole up to at least the zone of support of said sole corresponding to the toes.
1~4~59 This groove 5 extends beneath the whole length of the sole. This groove 5 of triangular section cooperates, when the boot 3 is fixed on the ski 1, with a projecting part 6 of complemen-tary shape to said groove, fixed on the ski in the zone correspon-ding to the zone of contact 4a of the sole from the binding to the toe support zone. The projecting part 6 is therefore immediately adja-cent the binding Z so that, when the skier's foot moves, the reces-sed part 5 and projecting part 6 composing the lateral holding means fit in each other. In fact, even when the foot is in position of passive extension, i. e. the foot is essentially supported on the toes, the cooperation between the end of sole and the ski remains ensured due to the fact that the parts 5 and 6 are located in this toe support zone.
Due to the invention, this cooperation is effected all the better as the section of these parts is consituted in its front part, concerning the projecting section 6, by a portion of a frustrum of a cone or pyra~nid 6a of which the large base 6b (of triangular section inthe case of the Figure) is located on the binding 2 side and the small base 6c towards the rear of the boot. Consequently, and precisely during the phase of passive extension o the foot, shown in Figure 16, at the moment when the sole iB in position of minimum contact with the ski, the guiding and lateral holding of this sole remain maintained from the beginning of the phase of return of the foot flat on the ski. The front part 6a whose section decreases towards the rear of the projecting section 6 may be extended rearwardly by a prismatic or cylindrical section 6d, there-fore of constant height.
Figure 15 clearly shows that the front end zone 4a of the sole 4 is centered on the ski with a maximum efficiency determ.ined by the fact that the sections of the cooperating parts S and 6 comprise volumes of cross section decreasing from front to rear, making it possible to obtain a maximum guiding and centering for a minimum surface of contact of the sole on the ski Figures 17 and 18 advantageously show the adaptation of the binding system according to the invention to a model of langlauf boot and binding presently existing on the market.
~ langlauf ski boot 10 having a sole 12 of the type stan-dard 35, standard "Lin", standard 50, etc., is mounted on a ski 1 and fixed thereto by a binding 11 of type corresponding to the stan-clard of the sole end 12a.
The assembly thus made comprises, similarly to the preceding example, lateral holding means located in the front end zone of the sole to guarantee a maximum cooperation between recessed parts 14 and projecting parts 13, for a minimum surface of contact of the sole 12 on the ski 1. On this occasion, a projecting part 13 is pro-vided, of conical or pyramidal form, located on the longitudinal axis of the ski and which cooperates with a recessed part 14 of cor-responding conical or pyramidal form, advantageously located in the centre of the width of the tongue constituting the end 12a of the sole 12 From these ]ateral holding means of conical or pyramiclal form, longitudinal sections 13a and 14a of triangular cross section extend.
These sections which are also respectively recessed and projecting and of triangular cross section substantially less than that of the cones or pyramids 13, 14, ensure the continuity of the centering and guiding during the phase when the foot returns into flat position on the ski (indicated by arrow 15)~ effectecl at the beginning thereof by the parts 13, 14 cooperating with each other. The recessed part 14 may advantageously be open so that the snow which might lodge therein may be driven out In thi s case, the embodiment of the system according to the invention would not be limited to recessed and projecting parts of conical format, but all shapes, of which the volume decreases from front to rear allowing a maximum of centering for the position of minimum contact of the sole on the ski, remain perfectly adequate 114~59 to be covered by the invention Figures 19 to 22 show two possible variant embodiments of projecting sections 16 and 17 which are beneath the front end zone of the sole and cooperate with corresponding recessed sections Inade in the sole.
In Figures 21 and 22 in particular, the front portion 17b, of rearwardly decreasing section, of the projecting section 17 advan-tageously con~prises a stem 17a engaging in the groove of the corres-ponding sole when said latter is in its phase returning into flat posi-tion on the ski.
It is obvious that the invention can find its full advantage only by the association of the lateral holding means in the front end zone of the sole with those of the lateral holding means extending beneath the metatarsal zone or even beneath the zone of theheel.
Claims (17)
1. In a cross-country ski binding system having means on the ski for anchoring the toe portion of the boot to the ski while at the same time permitting the heel of said boot to lift with respect to the top surface of the ski, the improvement comprising means for inhibiting lateral shifting of the boot relative to the length of the ski, said lateral shift inhibiting means including a first part associated with the undersurface of the sole of the boot and a second part associ-ated with the top surface of the ski, said first and second parts including respec-tive recessed and projecting sections of complementary mating shapes extending longitudinally of the ski from adjacent the boot toe-anchoring means in a direction rearwardly therefrom toward the heel of the boot, said complementary mating shapes gradually tapering in a direction from one end toward the other whereby they gra-dually vary in cross-sectional area longitudinally therealong, such that the cross-sectional area at one end is greater than that at the other end.
2. The improvement as defined in Claim 1, wherein the cross-section of said shapes increases in a direction from the front to the rear of the boot.
3. The improvement as defined in Claim 1, wherein the cross-section of said shapes decreases in a direction from the front to the rear of the boot.
4. The improvement as defined in Claim 3, wherein the complementary mating shapes have a cross-section with a decreasing curved surface, running from front to back.
5. The improvement as defined in Claims 1, 2 or 3, wherein the complemen-tary mating shapes are constituted by portions of a conical frustrum.
6. The improvement as defined in Claims 1, 2 or 3, wherein the complemen-tary mating shapes are constituted by portions of a pyramid.
7. The improvement as defined in Claims 1, 2 or 3, wherein the means for laterally holding the boot on the ski extends substantially longitudinally with respect to the boot from the zone under the toe to the zone under the heel.
8. The improvement as defined in Claim 1, wherein the complementary mating shapes are constituted by the shape of a volume substantially in the form of a portion of a triangular pyramid comprising a small and a large triangular base.
9. The improvement as defined in Claim 7, wherein the height between the small and large triangular bases of the volume is constant.
10. The improvement as defined in Claim 7, wherein the height between the small and large triangular bases of the volume varies in the longitudinal direction.
11. The improvement as defined in Claim 8, 9 or 10, wherein the small and large triangular bases each have the form of an isoceles triangle with the apex facing the front.
12. The improvement as defined in Claim 8, 9 or 10, wherein the volume projects from the surface of the ski and forms a large triangular base in contact with the upper surface of the ski and a small triangular base facing the sole of the boot presents a recessed volume of the same shape.
13. The improvement as defined in Claim 1, wherein the com-plementary mating shapes have polygonal cross-sections with at least two sides parallel to each other and perpendicular to the plane of the ski.
14. The improvement as defined in Claim 12, wherein the sides parallel to each other and perpendicular to the plane of the ski comprise a rectilinear central rib along the longitudinal axis of the boot and on either side of which transverse lateral ribs extend perpendicularly, and wherein the ridges form an acute angle with the plane of the ski.
15. The improvement as defined in Claim 3, wherein the com-plementary mating shapes have a cross-section in the form of a V and the surface of which decreases from front to rear.
16. The improvement as defined in Claim 15, wherein the complementary mating shapes are extended rearwardly by rectilinear sections of constant cross-section.
17. The improvement as defined in Claim 15, wherein the side, having the largest section, of the projecting part having a cross-section decreasing towards the rear is arranged with a bevelled edge which engages in a corresponding groove in the sole.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7835488A FR2443853A1 (en) | 1978-12-11 | 1978-12-11 | Ski-boot with longitudinal guiding groove in sole - is intended for cross country skiing and allows sole to flex freely |
| FR78.35488 | 1978-12-11 | ||
| FR79.07071 | 1979-03-09 | ||
| FR7907071A FR2450618B2 (en) | 1978-12-11 | 1979-03-09 | ASSEMBLY FOR FIXING A SHOE TO A SKI |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1140959A true CA1140959A (en) | 1983-02-08 |
Family
ID=26220917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000332871A Expired CA1140959A (en) | 1978-12-11 | 1979-07-31 | System for binding a boot to a ski |
Country Status (11)
| Country | Link |
|---|---|
| CA (1) | CA1140959A (en) |
| CH (1) | CH632417A5 (en) |
| CS (1) | CS219914B2 (en) |
| DD (1) | DD146791A5 (en) |
| DE (2) | DE2954569C2 (en) |
| FI (1) | FI793520A (en) |
| FR (1) | FR2450618B2 (en) |
| NO (1) | NO146418C (en) |
| PL (1) | PL120305B1 (en) |
| SE (1) | SE7908015L (en) |
| YU (1) | YU40857B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4514916A (en) * | 1982-06-08 | 1985-05-07 | Nike, Inc. | Sole for cross-country ski shoe |
| US4789177A (en) * | 1985-11-15 | 1988-12-06 | Salomon S.A. | Three point support |
| US4842293A (en) * | 1984-11-15 | 1989-06-27 | Salomon, S.A. | Apparatus for lateral guidance of a ski boot, attached at its front end, to a cross-country ski |
| US4850609A (en) * | 1986-03-13 | 1989-07-25 | Salomon S.A. | Cross shaped support |
| US4890855A (en) * | 1985-10-30 | 1990-01-02 | Salomon S.A. | Releasable ski stop |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5562012A (en) | 1978-11-06 | 1980-05-10 | Teijin Ltd | Slow-releasing preparation |
| NO150745C (en) | 1980-04-21 | 1984-12-12 | Salomon & Fils F | DEVICE FOR FITTING A PHOTO TOY TO A SKI. |
| DE3153195C2 (en) * | 1980-04-21 | 1990-01-04 | S.A. Etablissements François Salomon et Fils, Annecy, Haute-Savoie | Securing unit of a ski boot intended for cross-country skiing |
| FR2483240A1 (en) * | 1980-06-02 | 1981-12-04 | Salomon & Fils F | Cross country ski binding - has projection on sole of boot fitting in groove in plate on ski |
| FR2497595B1 (en) * | 1981-01-06 | 1985-05-17 | Salomon & Fils F | |
| DE3128009C2 (en) * | 1981-07-15 | 1986-12-04 | Trak Sportartikel GmbH, 8028 Taufkirchen | Cross-country skis with a binding |
| FR2524812B1 (en) * | 1982-04-08 | 1986-05-23 | Salomon Sa | SAFETY FIXING DEVICE FOR CROSS-COUNTRY SKIING |
| FR2527932A1 (en) * | 1982-06-08 | 1983-12-09 | Salomon & Fils F | ASSEMBLY FOR ATTACHING A SHOE TO A CROSS-COUNTRY OR HIKING SKI |
| NO155643C (en) * | 1984-06-01 | 1987-05-06 | Witco As | DEVICE FOR ATTACHING A BOOT ON A SKI, SPECIALLY CLEANING OR TOUR SKI. |
| FR2565116B1 (en) * | 1984-06-04 | 1986-10-03 | Salomon Sa | DEVICE FOR LATERAL GUIDANCE OF A SKI SHOE, AND CROSS-COUNTRY SHOE AND SKI SUITABLE FOR THIS DEVICE |
| FR2565117B1 (en) * | 1984-06-04 | 1987-10-09 | Salomon Sa | DEVICE FOR GUIDING A SKI SHOE, AND CROSS-COUNTRY SHOE AND SKI SUITABLE FOR THIS DEVICE |
| SU1560246A1 (en) * | 1985-04-24 | 1990-04-30 | Ленинградский Политехнический Институт Им.М.И.Калинина | Ski accessory |
| FI77990C (en) * | 1985-09-25 | 1989-06-12 | Jukka Jaervinen | ski Binding |
| JPS62159677A (en) * | 1986-01-08 | 1987-07-15 | 株式会社ノーザンコマーシヤル | Binding apparatus of ski boots |
| IT1224162B (en) * | 1986-05-22 | 1990-09-26 | Icaro Olieri & C Spa | ANCHORAGES FOR SOLES OF CROSS-COUNTRY SKI SHOES |
| AT386128B (en) * | 1986-07-17 | 1988-07-11 | Tyrolia Freizeitgeraete | DEVICE FOR LATERALLY GUIDING A SKI SHOE AT ITS FRONT END ON A CROSS-COUNTRY SKI |
| AT386347B (en) * | 1986-07-17 | 1988-08-10 | Tyrolia Freizeitgeraete | DEVICE FOR LATERALLY GUIDING A SKI SHOE FASTENED AT ITS FRONT END ON A CROSS-COUNTRY SKI |
| AT400111B (en) * | 1987-11-18 | 1995-10-25 | Salomon Sa | Lateral guide apparatus for a ski boot |
| IT1225976B (en) * | 1988-09-19 | 1990-12-10 | Olivieri Icaro & C | INTEGRATED BINDING FOR CROSS-COUNTRY SKIING. |
| US4952184A (en) * | 1989-04-24 | 1990-08-28 | Graziano Maria G | Cross-water ski |
| IT1271597B (en) * | 1994-05-20 | 1997-06-04 | Htm Sport Spa | SWIMMING FIN. |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE324312B (en) * | 1968-12-23 | 1970-05-25 | Hoffmans Verkstads Ab | |
| CH518107A (en) * | 1970-06-08 | 1972-01-31 | Glutz Blotzheim Nachfolger Ag | Ski bindings for cross-country and touring purposes |
| DE2058936A1 (en) * | 1970-12-01 | 1972-06-08 | Anton Kittl | Cross-country skiing device |
| US3979131A (en) * | 1975-03-18 | 1976-09-07 | Ginther George E | Ski binding |
| US4017096A (en) * | 1975-08-08 | 1977-04-12 | Maurice Pinsonnault | Ski harness |
| FI54055C (en) * | 1976-03-15 | 1978-10-10 | Pentti Riikonen | SKIDBINDNING |
| NO138929C (en) * | 1976-04-30 | 1978-12-13 | Alfa Skofabrik As | ARRANGEMENT AT SKI BOOT HALLS. |
| DE2622966B1 (en) * | 1976-05-21 | 1977-04-14 | Adolf Dassler | Cross-country ski boots and ski bindings for this |
| US4062134A (en) * | 1976-11-15 | 1977-12-13 | Ryder Gary R | Toe clip for ski boots |
| US4235452A (en) * | 1977-04-13 | 1980-11-25 | Josef Linecker | Cross-country ski shoe and binding |
| FR2413917A1 (en) * | 1978-01-09 | 1979-08-03 | Eenoo Daniel Van | Front stop for cross country ski binding - has spring-loaded slide engageable in opening in ski boot sole and protruding lip acting as retainer |
| CH619147A5 (en) * | 1978-09-05 | 1980-09-15 | Bata Schuhe Ag |
-
1979
- 1979-03-09 FR FR7907071A patent/FR2450618B2/en not_active Expired
- 1979-07-18 NO NO792381A patent/NO146418C/en unknown
- 1979-07-31 CA CA000332871A patent/CA1140959A/en not_active Expired
- 1979-09-14 DE DE2954569A patent/DE2954569C2/de not_active Expired
- 1979-09-14 DE DE19792937347 patent/DE2937347A1/en active Granted
- 1979-09-27 SE SE7908015A patent/SE7908015L/en unknown
- 1979-11-05 CH CH989279A patent/CH632417A5/en not_active IP Right Cessation
- 1979-11-09 FI FI793520A patent/FI793520A/en not_active Application Discontinuation
- 1979-11-15 DD DD79216926A patent/DD146791A5/en unknown
- 1979-11-19 CS CS797927A patent/CS219914B2/en unknown
- 1979-12-04 YU YU2952/79A patent/YU40857B/en unknown
- 1979-12-05 PL PL1979220155A patent/PL120305B1/en unknown
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4514916A (en) * | 1982-06-08 | 1985-05-07 | Nike, Inc. | Sole for cross-country ski shoe |
| US4842293A (en) * | 1984-11-15 | 1989-06-27 | Salomon, S.A. | Apparatus for lateral guidance of a ski boot, attached at its front end, to a cross-country ski |
| US4890855A (en) * | 1985-10-30 | 1990-01-02 | Salomon S.A. | Releasable ski stop |
| US4789177A (en) * | 1985-11-15 | 1988-12-06 | Salomon S.A. | Three point support |
| US4850609A (en) * | 1986-03-13 | 1989-07-25 | Salomon S.A. | Cross shaped support |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2450618A2 (en) | 1980-10-03 |
| PL220155A1 (en) | 1980-08-25 |
| CH632417A5 (en) | 1982-10-15 |
| DE2937347A1 (en) | 1980-06-19 |
| NO146418B (en) | 1982-06-21 |
| SE7908015L (en) | 1980-06-12 |
| DE2954569C2 (en) | 1988-03-31 |
| NO792381L (en) | 1980-06-12 |
| NO146418C (en) | 1982-09-29 |
| FI793520A (en) | 1980-06-12 |
| YU40857B (en) | 1986-06-30 |
| PL120305B1 (en) | 1982-02-27 |
| YU295279A (en) | 1982-08-31 |
| CS219914B2 (en) | 1983-03-25 |
| DE2937347C2 (en) | 1988-01-21 |
| FR2450618B2 (en) | 1985-07-05 |
| DD146791A5 (en) | 1981-03-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |