EP0156881A1 - Procede et dispositif permettant d'adapter correctement des chaussures de ski a un skieur - Google Patents

Procede et dispositif permettant d'adapter correctement des chaussures de ski a un skieur

Info

Publication number
EP0156881A1
EP0156881A1 EP84903606A EP84903606A EP0156881A1 EP 0156881 A1 EP0156881 A1 EP 0156881A1 EP 84903606 A EP84903606 A EP 84903606A EP 84903606 A EP84903606 A EP 84903606A EP 0156881 A1 EP0156881 A1 EP 0156881A1
Authority
EP
European Patent Office
Prior art keywords
skier
ski
boot
boots
respect
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.)
Withdrawn
Application number
EP84903606A
Other languages
German (de)
English (en)
Inventor
David Goodspeed
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
QUESTUARY Corp
Original Assignee
QUESTUARY Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by QUESTUARY Corp filed Critical QUESTUARY Corp
Publication of EP0156881A1 publication Critical patent/EP0156881A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D1/00—Foot or last measuring devices; Measuring devices for shoe parts
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C11/00—Accessories for skiing or snowboarding
    • A63C11/26—Devices for use in mounting ski-bindings to skis, e.g. jigs; Testing or measuring devices specially adapted therefor
    • A63C11/265—Devices for testing or measuring the release force of safety ski bindings
    • 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

Definitions

  • This invention relates generally to the field of fitting the feet of skiers to their ski boots. More particularly, the invention relates to a way of correcting for improper fit of ski boots, particularly as regards the fixed angle provided to the ankle joint in the plane transverse to the direction of travel of the skier, which is frequently incorrect.
  • the basic elements of skiing equipment are well understood.
  • the average skier will select a pair of skis from a first manufacturer, and will buy a set of ski bindings from another manufacturer and attach, or have them attached, to the skis. He will then buy a pair of ski boots, which in use are affixed to his skis by his bindings.
  • the function of the binding is to release the boot from the ski upon exceeding of some predetermined amount of force, e.g., in a fall or accident.
  • the present state of the art in ski boots and bindings is such that the ski boot rigidly fixes the transverse angle of the athlete's calf with respect to the bottom surface of the ski in the plane perpendicular to the direction of travel.
  • the boot generally also controls the angle made by the skier's calf in the plane of direction of travel, although some slight flexibility in this plane is usually provided. That is to say. the boot and hence the leg is fixed rigidly to the ski by the bindings. No flexibility is provided in the angle of the skier's calf with respect to the plane of the ski in the plane transverse to the direction of travel, hereinafter sometimes referred to as the transverse angle.
  • the transverse angle made by the calf with respect to the bottom of the ski is defined by the boot.
  • the prior art has suggested generally that the angle of the calf with respect to the ski measured transversely to the direction of travel of the ski may be of importance to a skier's performance.
  • the correct angle of the calf in the direction of travel is generally agreed upon, and is provided by most boots, not all boots provide the same transverse angle.
  • boots are typically selected by wearers on the basis of fit and comfort, as well as perhaps other considerations, rather than by consideration of the transverse angle at which the boot places the wearer's calf with respect to the bottom of the ski.
  • boots are typically selected on the basis of fit and comfort. However, most boots selected will represent a compromise except in the rare case that the skier's foot precisely matches the last on which the boot is constructed. This is so unusual that many boots now include some sort of custom fitting provision, such as foam injection, plastic deformation of the boot's inner structure while being worn by the wearer, and the like.
  • foam injection plastic deformation of the boot's inner structure while being worn by the wearer, and the like.
  • such systems are normally passive, that is. they merely conform the boot to the user's foot and do not provide any positive correction for any improper conformation of the user's foot. In particular, no system provides correction for improper distribution of the skier's weight within his boot, while also correcting the transverse angle discussed above. It would be desirable if this were provided as well.
  • the present invention comprises a two-step process in which a skier's feet are first fitted to his boots and his boots thereafter are corrected to provide the correct orientation of the skier's calves with respect to the ski bottoms.
  • a ski boot insert is first custom-fit to the skier's foot so that his weight distribution is correct. Then the correct orientation of his calves made with his boots and in his normal stance is determined. Apparatus is provided for gradually varying this angle until the calf orientation is correct. It is then relatively simple to permanently provide the proper correction.
  • shims are interposed between the skier's bindings and his skis. The amount of shim required can be directly read off upon achievement of the correct angle of tilt of the skier's boots.
  • Fig. 1 shows four views of a skier's right leg and ski boot showing the various angles the ski boot and hence the skier's calf should make with respect to the horizontal. generally depending on the skier's skill level and his skiing habits;
  • Fig. 2 shows a desirable boot insert which can be used to correct the fit of the boot so as to insure the skier's proper weight distribution with respect to the boot:
  • Fig. 3 shows generally how a ski boot fits within ski boot bindings and how the bindings may be attached to the ski:
  • Fig. 4 shows schematically a device which can be used to provide a reference point on the user's knee for measurement
  • Fig. 5 shows a perspective view of apparatus for correction of the transverse calf angle according to the invention
  • Fig. 6 shows a cross-sectional view of the apparatus according to the invention taken along the line 6-6 of Fig. 5;
  • Fig. 6a shows a detailed cross-sectional view of a portion of the drawing of Fig. 6 taken along the line 6a-6a;
  • Fig. 7 is a cross-sectional view taken generally along the line 7-7 of Fig. 5, but with some additional details added;
  • Fig. 8 shows a schematic view of a detail of Fig. 7.
  • the present day state of the art in ski boots is such that once a ski boot has been selected and affixed to a ski by means of an intermediary binding, the angle the user's calf makes with respect to the bottom of the ski in the plane transverse to the direction of travel is fixed by the rigid nature of the ski boot in this plane. It has been realized that this angle is extremely critical in achieving good skiing performance, which is mainly a function of turning ability. It is believed that this angle is important because it affects distribution of the weight of the skier on the inner and outer edges of the skis, which is important to turning, because the inside edges of the skis are those against which the turning force is exerted.
  • the present invention relates to methods and apparatus for achieving this correct angle of inclination of the calf.
  • the reason why this angle is significant may be more complicated than just outlined. For example, alignment of the boot with respect to the hip may also be significant.
  • alignment of the boot with respect to the hip may also be significant.
  • Fig. lb shows the same skier, but in this case the knee 12 is lined up slightly inside his big toe by some distance d_, the angle between boot 10 and ski 14 being slightly greater than 1 .
  • a distance d 1 of about one inch gives good results for skiers of fairly advanced skill who participate in "slalom" races during which they must turn sharply. It is generally thought that the increased weight on the inside edges of the boots is of value here, but the invention is not to be constrained by this theory.
  • Fig. 1d a situation is shown in which a relatively "knock-kneed" position was corrected by application of a shim to the inside of the boot to achieve the correct down-hill inclination shown in Fig. 1; hence, the angle 4 between boot 10 and ski 14 appears on the other side.
  • the present invention relates to apparatus for achieving this correct alignment.
  • the present invention relates also to correction of another common fault, which is that most skiers do not properly fit into their boots.
  • boots are selected on the basis of fit and comfort.
  • fit and comfort are mainly determined on the basis of the fit of the foot and ankle within the upper portion of the boot, but proper skiing depends greatly upon the correct weight distribution within the boot.
  • a boot will have a generally flat "floor” with perhaps a slight arch support. Needless to say, it would be unusual indeed if the boot floor fit the skier properly. Correction can be achieved in accordance with Fig. 2.
  • Fig. 2 shows generally a skier's foot 20 fitting into a custom-made insole insert 22.
  • This insole insert 22 in a preferred embodiment may be made using the machine sold by and according to the techniques developed by a company called "Sidas", which is located in Grenoble, Switzerland. Their equipment is available in the United States through the Tool Company of New Hampshire, Inc. of Concord, N.H. Generally what is done according to the Sidas method is that the skier stands on a horizontal glass pane supported above a mirror. The operator then looks in the mirror and sees a reflection of the undersides of the skier's feet. By looking at the areas where the skier's feet most heavily contact the glass, indicated by a relatively light color of the skin because the blood is driven out therefrom, the operator, once properly skilled, can determine whether or not the weight of the individual is properly distributed between the various areas of the foot.
  • Fig. 3 shows a perspective view of how a standard ski boot 10 is attached to a standard ski 14 by means of front bindings 18 and rear bindings 16.
  • boots 10 are provided with front tongues which interact with mating, generally V-shaped, front members 18 and the rear of the boots 10 is provided with a shaped detail for similar interfitting within a rear binding 16. All this is conventional and forms no part of the present invention.
  • control of the angle of the boot 10 can be accomplished simply by shimming under one side or the other of the front and rear bindings 18 and 16, respectively.
  • a front shim is shown at 24 and a rear shim at 26.
  • the amount of shim needed is determined. This amount can be calculated or. as in a preferred embodiment, can be determined by iteratively raising or lowering one side of the boot 10 and noting the total amount of correction required to achieve the proper relation.
  • a shim of equivalent thickness is then simply inserted between the binding and the ski and is held down by the screws 19. The description above is focused on use of the method of the invention in adjusting the angle the skier's calf makes with respect to the plane of the ski.
  • this angle is relatively hard to measure and that a simpler expedient is to control the relative location of some fixed point on the calf, such as the center of the knee, with a similarly fixed point on the boot, such as the big toe. which then effectively serves to fix the angle of the calf relative to the ski.
  • Fig. 4 shows a simple device for locating the center of a knee joint for purposes of alignment according to the invention.
  • Four bars are mutually pivoted at their ends to form a parallelogram 28.
  • This device 28 is simply held lightly over the skier's knee while it is bent slightly.
  • a mark is made along a vertical line connecting the top- and bottom-most joints of the parallelogram device 28. If this is done similarly with respect to all skiers this can be used as an accurate reference point.
  • the angle that the calf makes with respect to the skis is controlled not only by the angle of the calf as it is defined by the boot, but also by the spacing of the feet in the skier's stance, and the width of the skiers' hips.
  • the method of the invention has been practiced by permitting the skier to assume whatever foot spacing is comfortable for him or her and then adjusting the calf angle by shimming one side or the other of the skier's boots.
  • control of the spacing of the feet may also be important, such that if, for example, a particular skier had unduly narrow foot spacing he or she could be encouraged to widen it by proper shimming of his or her boots. Presumably, development of better habits would then call for reshimming of the boots to achieve still further improvements.
  • the requirements for successful apparatus for determination of the thickness of the shim to be put under one side or the other of a given ski boot includes the following.
  • apparatus be provided for directly indicating the thickness of shims required.
  • apparatus allow these adjustments to be made readily and efficiently, and that it provide that the result of any adjustment made can immediately be determined. In this way, one can immediately determine whether a given amount of tilt imparted to the boot is sufficient to properly line up the reference point, for example, the kneecap, perpendicularly with the desired points, e.g., over the big toe, or elsewhere, as discussed above in connection with Fig. 1.
  • Fig. 5 shows a perspective view of a machine designed to achieve this purpose. It comprises a generally rectangular box 30 having a top 32 in which are cut two windows 34. Protruding through the windows 34 are support structure for a pair of flat, elongated, generally U-shaped boot supports 36. The boot supports are movable towards and away from one another, in accordance with the skier's stance, i.e., usual foot spacing. After adjusting the stance, the skier stands on the boot supports 36, which are each individually rotatable about axes running along their length and along both sides thereof, so that any inclination desired can be achieved by rotation about one axis.
  • the amount of shimming required relates directly to the amount of rotation.
  • the amount of shim required is read directly off a pair of dial indicators 40 which are mounted on a transverse bar 42 at the front of the machine.
  • the indicators 40 are placed over the U-shaped members as shown.
  • the total amount of shimming required to achieve that same inclination by shimming the boot can be read directly from the corresponding dial indicator 40.
  • the two boot support members 36 are mounted on "cars" which move in and out with respect to one another along an axis parallel to the support bar 42, in order to compensate for the width of stance of the individual skier. Their motion is controlled by a handle 46, rotation of which moves the cars in a manner detailed below.
  • a handle 46 rotation of which moves the cars in a manner detailed below.
  • Fig. 5 for clarity's sake is the means for evaluation of the alignment of a specified point on a skier's leg. for example, the point of the kneecap, and a given point on or near his boot, such as the big toe. This may simply be a vertical standard sliding horizontally in a track, to allow alignment with any chosen point.
  • Adjusters 44 control the inclination of the boot supports 36 in a manner detailed below.
  • the vertical standard is shown at 72 in Figs. 6 and 7 so that its structure can be clearly understood.
  • Figs. 6 and 7 show details of the structure of the apparatus shown in Fig. 5.
  • Fig. 6 is a cross-section taken generally along the line 6-6 of Fig. 5
  • Fig. 7 is a cross-section taken generally along the line 7-7 of Fig. 5.
  • the left and right halves of Fig. 7 are not identical because they are taken through different portions of the apparatus to show differing details.
  • the basic structure of the device is a pair of linearly movable cars 50 which ride back and forth with respect to one another on bearings 52 riding in tracks which may simply be U-shaped beams 54.
  • each of the cars 50 Mounted on each of the cars 50 are a pair of longitudinally extending shafts 56 which are sepa- rately journaled for rotation in supports 58 on the cars and in supports 60 which hold up the boot support 36 and thus the skier's boot 10, shown in phantom in Fig. 6.
  • the shafts 56 are fixed to cam members 62 which are eccentric with respect to the support members 60, and journaled thereto by bearings 61 so that the rotation of the shaft 56 causes eccentric rotation of the cam member 62.
  • one side of the U-shaped member 36 is fixed transversely with respect to the shafts 56 while the other is floating.
  • a split clamp 64 by which the dial indicator 40 can be releasably affixed to the transverse rod 42; by loosening of a knob 66 connected to a screw, the clamp 64 can be loosened, permitting the dial indicator 40 to be moved as necessary to ride over the uplifted portions of the U-shaped members 36.
  • the support member 36 is provided with the U-shape shown to make it easy for an operator to ensure that the dial indicator is properly located with respect to the cam member 62 carried on the axle 56 so that the correct shim thickness is shown.
  • the shims required to achieve a given angle of inclination will vary in thickness depending on the spacing of the binding hole. This difficulty can be compensated for by providing a horizontal scale (not shown) on the boot support 36 upon which the tip 40a of the indicator 40 rests. One could then measure the spacing of the binding holes and use this to set the indicator the same distance from the axis about which the boot support 36 is to be rotated. In this way. the indicator reading would correctly indicate the shim thickness required.
  • Fig. 7 and Fig. 8 show the way in which the two cars 50 move inwardly and outwardly with respect to one another upon rotation of the handle member 46 (Fig. 5).
  • Each of the cars 50 is connected by a pair of chains 70 to a central sprocket member 68, which would typically be two sprockets on the same shaft, on which is also mounted handle 46.
  • Fig. 8 schematically shows the connection of the chains 70 to the cars 50, which are fixed to the sprocket 68.
  • clockwise rotation of the sprocket 68 causes the cars 50 to move outwardly with respect to one another, while counter-clockwise rotation as shown on the right side of Fig.
  • Figs. 6 and 7 also show how the vertical standard 72 may be mounted for sliding within a channel 74.
  • the operator will be able to determine the optimal point for location of the kneecap point with respect to the big toe; with respect to most skiers, direct vertical alignment will be best.
  • Practice of the method of the invention would then proceed first with fitting of the boots to the skier, as discussed above in connection with Fig. 2 by making an insole insert.
  • the supports 36 will then be made level by rotation of shafts 56 as necessary, the dial indicators 40 would then be zeroed, and the lower end of the vertical standard 72 be set, e.g., opposite the big toe.
  • the corresponding adjuster 44 would then be turned, rotating the shaft 56 and corresponding cam member 62 and tilting the U-shaped boot support member 36 and the ski boot until they are tilted to a degree sufficient that the knee center point is observed to be in vertical alignment with the vertical standard 72. The same procedure would then be repeated for the other leg. The total amount of vertical correction required for each foot could then be read directly from the corresponding dial indicator 40 and a shim of that thickness inserted beneath the correct side of the binding on that one of the user's skis.
  • a problem which sometimes occurs is that persons are not built with horizontal hips, that is. one leg is shorter than the other. This leads to improper weight distribution and difficulty in making turns in one or the other direction.
  • the hip imbalance or difference in leg length can be compensated for according to the present invention by using two dial indicators on one of the U-shaped boot support members and adjusting both of the adjusters 44 corresponding to that U-shaped member 36 equally until the skier's hips are parallel, thus compensating for the inequalities in the length of his leg. The remainder of the process of the invention would then proceed as above. Shims in this case would be inserted under both sides of the ski binding on the ski used on the shorter leg.
  • hex bolt 76 Use of the hex bolt 76 would allow adjustment to be made using a simple tool, e.g., a socket, box or open-end wrench. As shown in Fig. 6a the ratchet action of the piece of spring steel 80 acting on the gear 78 will hold the gear 78, shaft 56 and cams 62 in whatever position they have been caused to assume by torque applied to the hex bolt 76.
  • a simple tool e.g., a socket, box or open-end wrench.
  • cams 62 should be mounted within bearings 61 if friction is not to raise the effort required to lift the entire skier upon rotation of the shaft 56 to an unacceptably high level.
  • the amount of lifting required is relatively small, on the order of 15mm maximum, the effort required should not be too great, and the size of the cams, bearings and other parts involved should not be so large as to be prohibitively expensive.
  • motorization of the lifting of the boot support members is also possible.
  • Other modifications to the apparatus of the invention would include such things as digital read-out of the required shim thickness.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

Procédé et dispositif permettant d'adapter correctement l'intérieur d'une chaussure de ski (10) au pied d'un skieur et d'assurer l'orientation transversale correcte des chaussures (100 par rapport aux skis (14). Selon ce procédé, l'adaptation correcte est assurée en fabriquant une pièce rapportée (22) conçue pour distribuer correctement le poids du skieur sur toute la surface inférieure du pied (20), en déterminant ensuite l'inclinaison transversale correcte de la partie inférieure de la jambe. Par la suite, on fait varier de manière itérative l'inclinaison de la chaussure de ski (10) par rapport à l'horizontale, de manière à modifier l'inclinaison de la jambe du skieur. Lorsque l'on atteint la position désirée, on note la quantité de correction nécessaire et on insère une cale (24, 26) d'épaisseur équivalente sous la fixation de ski (16, 18) pour assurer le maintien de cette position. Dans le mode préféré de réalisation, la relation correcte entre la jambe, la chaussure (10) et le ski (14) est déterminée en tenant compte de la relation entre les genoux (12) du skieur et ses pieds (20).
EP84903606A 1983-09-19 1984-09-19 Procede et dispositif permettant d'adapter correctement des chaussures de ski a un skieur Withdrawn EP0156881A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US53353983A 1983-09-19 1983-09-19
US533539 1983-09-19

Publications (1)

Publication Number Publication Date
EP0156881A1 true EP0156881A1 (fr) 1985-10-09

Family

ID=24126407

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84903606A Withdrawn EP0156881A1 (fr) 1983-09-19 1984-09-19 Procede et dispositif permettant d'adapter correctement des chaussures de ski a un skieur

Country Status (2)

Country Link
EP (1) EP0156881A1 (fr)
WO (1) WO1985001191A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT401215B (de) * 1992-03-24 1996-07-25 Auer Herbert Sportschuh
FR2757304B1 (fr) * 1996-12-18 1999-01-22 Salomon Sa Outil pedagogique
US7516555B2 (en) * 2007-07-19 2009-04-14 Somnio, Inc. Systems and methods for footwear related measurement and adjustment
EP2275236B1 (fr) * 2009-07-17 2012-08-29 Solemate AB Dispositif d'usinage de chaussure de ski et procédé de réglage de l'inclinaison de la semelle d'une chaussure de ski
ITUB20160152A1 (it) * 2016-01-21 2017-07-21 Cabra Eng S R L Apparato di misura per la misurazione della conformazione anatomica della gamba

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR483673A (fr) * 1915-12-03 1917-07-31 Hans Iselin Appareil pour mesurer l'inflexion des pieds bots valgus
FR757134A (fr) * 1932-06-27 1933-12-20 Dispositif pour le traitement des extrémités des membres inférieurs ou supérieurs
US2492059A (en) * 1948-03-27 1949-12-20 Ogden George Foot alignment device and method of making the same
US3358373A (en) * 1965-05-06 1967-12-19 Kenneth L Martin Angulation gauge to measure foot varus
US3711880A (en) * 1970-03-19 1973-01-23 M Dalebout Apparatus for custom fitting boots
DE2142678B2 (de) * 1971-08-25 1979-04-05 Jean Joseph Alfred Nevers Nievre Beyl (Frankreich) Gleitplatte für Auslöseskibindungen
CH563783A5 (fr) * 1972-05-15 1975-07-15 Gertsch Ag Wengen
US4062355A (en) * 1976-04-09 1977-12-13 Joshua Morley Kaye Device for use in evaluating the lower leg and foot
JPS52146985A (en) * 1976-06-01 1977-12-07 Roudou Fukushi Jigiyoudan Device for analysing physically balancing function
US4201226A (en) * 1977-07-26 1980-05-06 Phillips Robert L Combination instrument for taking biomechanical measurements
US4416292A (en) * 1981-08-19 1983-11-22 Brown Dennis N Method and apparatus for determining the neutral axis of a foot or the like

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8501191A1 *

Also Published As

Publication number Publication date
WO1985001191A1 (fr) 1985-03-28

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