US3432180A - Heel engaging unit for a safety ski binding - Google Patents

Heel engaging unit for a safety ski binding Download PDF

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Publication number
US3432180A
US3432180A US727087A US3432180DA US3432180A US 3432180 A US3432180 A US 3432180A US 727087 A US727087 A US 727087A US 3432180D A US3432180D A US 3432180DA US 3432180 A US3432180 A US 3432180A
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Prior art keywords
heel
heel engaging
ski
unit
lever
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US727087A
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English (en)
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Willy Suhner
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Individual
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    • 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
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0844—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable the body pivoting about a transverse axis
    • 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
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety 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
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/0807—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings for both towing and downhill skiing
    • 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
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0841—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable with a single jaw
    • A63C9/0842—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable with a single jaw the jaw pivoting on the body or base about a transverse axis
    • 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
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0846—Details of the release or step-in mechanism
    • 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
    • A63C9/005—Ski bindings with means for adjusting the position of a shoe holder or of the complete binding relative to the ski
    • 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
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/0805—Adjustment of the toe or heel holders; Indicators therefor

Definitions

  • the present invention relates to a heel engaging unit for a safety ski binding, and more specifically to a strapless heel engaging unit provided with heel engaging means which automatically secure the heel of a ski boot to the unit Iwhen the user steps with the heel into the heel engaging means while the latter are in a step-in position and which subsequently holds the ski engaging means in a downhill run position in which the bottom surface of the heel will be maintained closely adjacent to the top surface of the ski or in a walking or cross-country skiing position in which the heel of the ski boot may move within Certin limits upwardly and downwardly with respect to the top surface of the ski.
  • Heel engaging units for safety ski bindings are known in the art in which the heel engaging unit cooperates with a front engaging unit for automatically securing the heel engaging unit to the heel of a ski boot when the user steps with the ski boot into the binding, however these known safety ski bindings have the disadvantage that they are adapted only for use during downhill run since in these bindings the heel of the ski boot cannot be lifted from the top surface of the ski.
  • ski bindings are known in the art which are suitable for downhill run as well as for cross-country skiing, These ski bindings are usually provided for crosscountry skiing with additional members, for instance a plate extending beneath the sole of the ski boot. Such plates are liable to twist or break, and in addition these ski bindings use for cross-country skiing mechanical linkage systems which have to be closed by means yof a tightening member.
  • the changeover of these known ski bindings for downhill run use or for cross-country skiing use is usually diicult and time-consuming, and these known ski bindings are also very often dependent on a specific shape of the heel of the ski boot for their proper function. ln addition these known ski bindings have usually a poorly functioning release mechanism for releasing the heel engaging means from the heel of a ⁇ ski boot during a fall of the skier to thus prevent injury to the skier during such fall.
  • the heel engaging unit according to the present invention is strapless and does not require any connecting elements which protrude laterally to ⁇ opposite sides of the ski boot or which are arranged beneath the sole of the ski boot. It is further adapted for use with most of the ski boots presently available without requiring any additional elements or metal fittings mounted on the ski boot.
  • the heel engaging Iunit is also usable in combination with Various front units or front jaws presently available on the market.
  • the pressure at which the front portion of a ski boot is pressed against the front jaws by the heel engaging unit of the present invention is steplessly adjustable and so is the releasing moment for releasing the heel engaging means of the heel engaging Iunit from the heel of a ski boot during forward fall. of the skier.
  • the aforementioned pressures are readable on the heel engaging unit after the skier has stepped into the safety ski binding and the means for indicating the pressure will not indicate the adjusted pressure but the actually acting pressure.
  • the heel engaging unit according to the present invention adapted to cooperate with a front unit of a safety ski binding for pressing the front portion of a ski boot into said front unit of the ski binding mainly comprises support means adapted to be mounted on a ski rearwardly of the front unit thereon, heel engaging means constructed and arranged to automatically egage the heel of a ski boot when the user steps with the heel onto the heel engaging means, and linkage means connecting the heel engaging means to the support means and guiding the heel engaging means movable relative to the ski along a predetermined portion of a substantially circular path having its turning axis in the region of the top surface of the ski and adjacent the front unit of the ski binding so that during the use of the ski binding for walking the heel engaging means remain substantially non-shiftably connected to the heel of the ski boot.
  • the linkage means preferably comprise a first parallelogram guide including an elongated member having a front portion and a rear portion and a pair of first link means respectively pivotally connected at opposite end-s thereof to said support means and the elongated member in the region of the rear portion of the latter, and a second parallelogram guide including a pair of second link means one of which is pivotally connected at one end thereof to one of the first link means and at the other end thereof to the heel engaging means and the other of which is pivotally connected at one end thereof to the elongated member in the region of the front portion of the latter and at the other end thereof to the heel engaging means.
  • FIG. 1 is a longitudinal section taken along the line I-I of FIG. 5 of a heel engaging unit according to the present invention and ⁇ showing this unit in the uppermost position during use of the unit for walking or cross country skiing;
  • FIG. 2 is a partially cross sectioned side View of the unit illustrated in FIG. l and showing the unit in a stepin position ready to receive the heel of a ski boot;
  • FIG. 3 is a sectional view similar to FIG. l and showing the unit in downhill run position;
  • FIG. 4 is a partially sectioned side view of the unit and showing the unit adjusted for walking on steep slopes whereby the position shown in full lines is the lowest and the position shown in dash-dotted lines the highest of the thus adjusted positions;
  • FIG. 5 is a top View of the unit shown in the position as in FIG. 3;
  • FIGS. 68 illustrate certain components of the unit respectively in side view, front view and section.
  • FIGS. 9-12 illustrate some alternatives of parts of the unit.
  • the heel engaging unit according to the present invention for a strapless safety ski binding mainly comprises support means which include a base plate 1 adapted to be connected by screws or the like to the top surface of a ski 2, as indicated in FIG. 3, and a frame 3 mounted on the base plate 1 movable in longitudinal direction of the ski.
  • the frame 3 includes a pair of guide rails 5 which respectively encompass lateral edge portions of the base plate 1 to guide the frame in longitudinal direction of the base plate, and a pair of lateral walls 7 projecting upwardly from the guide rails 5 and being connected at the front end the rear end thereof by a pair of transverse bolts 11 and 13, respectively.
  • the bolts 11 and 13 are formed with bores therethrough aligned along a common axis normal to the axis of the bolts and a rod 15 extends through the aforementioned bores preferably fixed to the bolts 11 and 13 in any convenient manner.
  • a cylindrical member 17 provided on the outer surface thereof with a screw thread engaging in corresponding threads 27 on the Ibase plate 1 is mounted on the rod 15 coaxially therewith and tunably and axially movable with respect thereto.
  • a pair of coil compression springs 19 and 21 are arranged to the left side, as viewed in FIG. l, of the member 17 about the rod 15.
  • An indicator member 23 is slidably arranged on the rod 15 between the left end face, as viewed in FIG.
  • the indicating member 23 extends with at least one lateral portion through a cutout 9 in at least one of the side walls 7 of the frame 3.
  • the indicating member 23 cooperates with marks 25 provided on the guide rails 5.
  • An abutment member 29 is located between opposed ends of the springs 19 and 21 and guided on the rod 15 by means of a sleeve 30 fixedly connected to or integral with the member 29.
  • the heel engaging unit comprises further heel engaging means including the members 92, 107 and 134 constructed and arranged, as will be described later on in detail, to automatically engage the heel of a ski boot when the user of the ski steps with the bottom face of the heel onto a forwardly projecting engaging portion 110 on the member 107.
  • the heel engaging unit includes further linkage means connecting the heel engaging means to the frame 3 of the support means for guiding the heel engaging -means relative to the ski along a predetermined portion of a substantially circular path having its turning axis in the region of the top surface of the ski and adjacent to a front unit provided thereon so that during use of the ski binding for walking the heel engaging means remains substantially non-shiftably connected to the heel of the ski boot.
  • the linkage means comprise a rst parallelogram guide including a pair of rst link means or link arms 35 and 37.
  • the longer arm 3S is pivotally connected at its bottom end to a bearing bolt 31 extending between a front portion of the side walls 7, whereas the lower end of the shorter arm 37 is pivotally connected to a bearing bolt 33 extending between a rear portion of the aforementioned side walls.
  • the first parallelogram guide includes furthe-r an elongated member 39 which is preferably cap-shaped and a pair of upper bearing bolts 43 and 45 extend between and are connected to side walls of the cap-shaped member 39 and the upper ends of the link arms 35 and 37 are respectively pivotally connected to the bearing bolts 43 and 45.
  • a rubber buffer is preferably connected to the rear end of the cap-shaped member 39.
  • the longer link arm 35 includes an upper and a lower bearing bushing 47, 51 respectively mounted on the bearing bolts 43 and 31 and connected to each other by parallel walls 49 extending spaced from each other and substantially normal to the axes of the bushing 47 and S1, as best shown in FIG. 6.
  • the upper bushing 47 is provided substantially midway between opposite ends thereof with an annular groove 53, for a purpose as will be described later on.
  • a cam 55 projects from the lower bushing 51, which cam has a stepped portion 56 and which defines together with the ca-m a cam face 58.
  • the heel engaging unit includes further a second parallelogram guide including two pairs of link members 84 and 130.
  • the upper shorter link members 84 are pivotally mounted at the rear ends thereof on a pivot pin 41, whereas the lower longer link members 130 are pivotally mounted at the rear ends thereof by means of a pivot pin 132 on the link member 37 between the ends of the latter.
  • the front ends of the link members 84 and 130 are pivotally connected to the heel engaging means for movably carrying the same.
  • each of the link members 84 is formed adjacent one end thereof with an opening 89 through which the pivot pin 41 extends, whereas in the region of the opposite end thereof a short cylindrical member or shaft 86 is turnably mounted.
  • the short shafts ⁇ 86 of the link members 84 respectively extend through bores in upper portions 94 of the member 92 so that the latter may turn about the axes 104 of the two short shafts 86.
  • the member 92 has a front wall 96 which is provided at its front surface thereof with a plurality of teeth 98 and which if formed substantially midway with a longitudinal slot 100.
  • the member 92 is further formed in the side walls thereof with mouth-shaped guide slots 102.
  • a first heel engaging member 134 is adjustably connected to the member 92 and for this purpose the heel engaging member 134 is provided at its rear face teeth 136 corresponding to the teeth 98 and interengaged with the latter.
  • the heel engaging member 134 is connected by means of a screw 144 extending through the slot 100 and a nut 145 to the member 92.
  • the nut 145 has projections extending into the slot 100 to prevent turning of the nut during tightening of the screw 144.
  • the heel engaging member 134 has at its upper end a forwardly projecting heel engaging portion 142 adapted to engage the upper surface of a rim portion of a heel 4 of a ski boot as indicated in FIG. 3.
  • the heel engaging portion 142 has an upper downwardly inclined guide surface 140 and this member has also a front guide surface 147 adapted to guide the heel of a ski boot onto a forwardly projecting portion of the second heel engaging member 1'07.
  • the second heel engaging member 107 has a bottom wall, the front portion 110 of which forms a second heel engaging portion adapted to engage the bottom surface of the heel of a ski boot, as shown in FIG. 3, and a pair of side walls 112, each provided with a pair of bores 114 and 116 as best shown in FIG. 7.
  • the side walls 112 are extended at the upper end thereof into rearwardly projecting noses 118 each having an upper guide surface 120 and a bottom edge 122 adapted to engage onto the bolts 41.
  • a bolt 124 extends through the bores 116 in the ⁇ side walls of the member 107, and the bolt 124 extends also through bores 88 in the short shafts 86 carried by the link members 84, which bores 88 are eccentrically arranged with regard to the axis 104 s of the shafts 86.
  • the bottom wall of the member 107 has a rearwardly projecting locking portion 126.
  • a pin 128 extending through the bores 114 in the side walls of the member y1017 pivotally connects the latter to the front ends of the link members 130.
  • a bore 110' as shown in FIG. 7 may be provided in which a projecting pin or the like, not shown in the drawings, may be secured.
  • a lever 60 is pivotally mounted at the front end thereof by means of the bolt 41 on the cap-shaped member 39.
  • the side walls of the lever 60 carry in the region of the front end thereof a pair of rollers 74, as best shown in FIGS. 1 and 5, which are adapted to engage the upper faces 120 of the noses 118 on the member 107.
  • the lever 60 carries further a roller 76 turnably mounted thereon by a pin 78.
  • Spring means in form of a coil spring 71 are operatively con-nected to the lever 60 tending when stressed to turn the latter depending on the position of the lever in counterclockwise or clockwise direction about the pivot pin 41.
  • the coil spring 71 is guided by means of guides 66, 68 respectively connected at the upper ends thereof by short stud pins 62, 64, only one of which is actually illustrated in the drawings, to side walls of the lever 60.
  • the lever 60 has further two downwardly projecting noses 80, a rearwardly extending handle portion 82 and further between the noses 80 and the roller 76 and further two outwardly extending abutment portions 81.
  • FIG. 2 the unit is illustrated in a step-in position ready to receive a heel of a ski boot.
  • the cap-shaped member 39 is in its lowest position just above the two guide rails 5 and covers the adjusting screw 17 and the coil springs 19 and 21.
  • Only the indicator slide 23 projects with later-al portions thereof through the cutouts 9 of the side walls 7.
  • the lever 60 is in slightly lifted position in which the roller 76 carried thereby abuts against the portion 56 of the cam 55 as well as against the rearwardly projecting locking portion 126 of the member 107.
  • the two rollers 74 are located beneath the noses 118 of the member 107 so that the latter is freely turnable about the bolt 128.
  • the member 92 which is turnable about the short shafts 86 of the links 84, is through the guide slots 102 and the bolt 128 in operative connection with the member 107.
  • the locking portion 126 of the member 107 engages 4the roller 76 in this position at a point which is above the Iturning axis of the roller 76.
  • the heel 4 of a ski boot is pushed against the heel engaging portion 1110 of the member 107 by moving the heel along the guide faces 147 of the member 134 and if the heel i-s then pressed downwardly onto the portion 110, the members 107 and the links 84 will be turned about the bearing bolt 41 while the guide slots 102 move along the pin 128 downwardly and rearwardly.
  • the member 92 During lifting of the ski boot the member 92 has the tendency to turn about the axis of the short shaft 86 whereby the lower part of the member 134 is pressed against the heel 4 while the upper part tends to move away from the latter. This ltendency is partly counteracted by the pressure exerted by the springs 19 and 21. This tendency can be completely eliminated by the following provisions:
  • the member 92 is guided on the member 107 in such a manner that these members are movable relative to each other in direction of a line connecting the centers of the bores 114 and 116 in the member -107 or slightly inclined to this line and so that the member 92 may also turn about the axis of the shafts 86 within narrow limits.
  • This guiding is obtained by means of the guide slots 102 which are cooperating with the bolt 128 xed to the member 107. lThe thus obtained limited turning movement assures that the ski boo-t in the downhill run position shown in FIG. 3 is not pressed too hard against the top surface of the ski.
  • the locking portion 126 will glide downwardly along the surface of the roller 76 and when the locking portion 126 passes downwardly beyond the critical point (FIG. 3), the lever 60 tends under the influence of the spring 71 to turn in clockwise direction so that the roller 76 is moved on the cam surface 58 of the cam portion 55 against the point of the cam portion to thereby exert on the members 92, 107 and 134 a closing moment and to hold these members in locked position. Since the locking portion 126 slides on the turnable roller 76, the wear on these two components will be very small.
  • the springs 19 and 21 will be compressed, since the front portion of the ski boot is held by a front unit of the ski binding, not shown in the drawing.
  • the forward pressure produced by the springs 19 and 22 will depend on the adjustment of the screw member 17 on the base plate 1 and the forward pressure exerted by the springs is indicated by the indicator slide 23 and the marks 25.
  • the compression of the spring 19 can, due to the length of the sleeve 30, not ⁇ surpass a predetermined magnitude.
  • the adjusting screw 17 may be adjusted in such a manner that when a desired compression of the springs 19 and 21 is obtained in the downhill run position, the lever 60 abuts against the cap-shaped member 39 and prevents: that the roller 76 is moved further forwardly along the locking portion elements of the heel 7 126 so that the whole system would be locked and could be opened only -by turning the lever 60 by means of extraneous forces in counterclockwise direction, that is, the heel engaging members would not open during a forward fall of the skier, and the ski binding would not act as safety ski binding any longer.
  • the compression of the springs 19 and 21 determines therefore the position of the member 29 and therewith the position of the roller 76 with regard to the locking portion 126.
  • the release moment is therefore dependent on the adjustment of the adjusting screw 17 and the thus produced compression of the springs 19 and 21. This simplifies proper adjustment of the safety ski binding.
  • the maximum forward movement of the roller 76 over the locking portion 126 may be adjusted by providing an adjusting screw 153 as shown in dash-dotted lines in FIG. 3 which abuts with its upper end against the bottom surface of the handle portion of the lever 60 to prevent thereby further turning of the lever in clockwise direction and resulting forward movement of the roller 76.
  • the elements cooperating with the spring 71 may be designed in such a manner that the closure pressure acting on the roller 76 and produced by the spring 71 is provided with a characteristic which is desirable for the opening of the binding during a fall of the skier.
  • the system may be designed in such a manner that during upward movement of the roll 76 the acting lever arm of the spring 71 decreases more than the spring pressure increases so that the closing moment decreases with increasing upward movement of the roller to thereby assure a sudden release of the heel during a fall.
  • the lever ⁇ 60 In order to bring the heel engaging unit from the downhill run position, as shown in FIG. 3, to a walking or cross-country skiing position, the lever ⁇ 60 is lifted by hand or by the plate of the ski pole to the position shown in FIG. l. The roller 76 is thereby disengaged from the locking portion 126 of the member 107 and the spring 71 is released. The outwardly bent portions 81 on the lever 60 will engage with the top portion of the cap-shaped member 39 to limit the turning movement of the lever 60. The two rollers 74 are moved over the noses 181 of the member 107 so that the latter may turn about the axis of the bearing ⁇ bolt 41 and so that the members 92 and 134 are also turned about the bearing bolt 41, while the turning movement is produced by the link members 130.
  • the upper part of the unit may swing about the link arms 35 and 37 so that the cap-shaped member 39 with the elements connected thereto may be swung upwardly to the position as shown in FIG. l and again downwardly to the position as shown in FIG. 3.
  • This position of the lever permits therefore during walking to tilt or roll the sole of the ski boot on the top surface of the ski 2.
  • the members 92 and 134 will move substantially on a circular arc, the turning axis of which is located between the front unit of the ski binding and the heel engaging unit, preferably in the region of the toes of the skier, so that the distance between the portion of the member 107 and the portion 142 of the member 134 will remain substantially constant and so that during this movement there will practically be no relative movement between the heel and the heel engaging portions which would result in damage to the ski boot.
  • the two rollers 74 which are mounted on the lever are moved over the two noses 118 of the member 107.
  • the noses 118 are therefore held onto the bearing bolt 41, which prevents an upward tilting of the link members 84 since the pin 124, extending through the bores ⁇ 88 and lixed at the outer ends thereof to the member 107, will prevent such movement.
  • the two noses 11S of the member 107 are formed in such a manner that during movement of the lever 60 to the position shown in FIG. 1 the bottom edge faces 122 of the noses 118 are tightly pressed against the bearing bolt 41 even if such a tight engagement should initially be prevented by snow accumulations or the like.
  • the substantially circular movement of the heel engaging means can, however, also be obtained in the following manner:
  • the link members may also be connected at the rear ends thereof to the longer link member 35 instead to the shorter link member 37 (FIG. 9).
  • a roller or a slide member may be connected to the lower portion of the member 107 and this roll or slide member may be guided along a path which preferably is in the form of an upwardly extending circular .arc 107 (FIG. 10).
  • the members 130 may be lixedly connected or 'be integrally formed with the member 107 and provided at the rear ends thereof with slots in which rollers or guide members are arranged which are mounted on a rearwardly extended portion of the link arm 35 or on an elongated portion of the link arm 37 (FIG. ll).
  • the longitudinal pressure produced by the compression springs 19 and 21 hardly changes due to the substantially circular lifting movement of the heel 4 so that any wear on the rails S will ⁇ be relatively small.
  • spacer discs which may be inserted between the top surface in the ski and the base plate 1, it is possible to vary the position of the mentioned circular movement to obtain, during use of ski boots of different size, the same relationship 4with regard to the longitudinal pressure produced by the springs 19 and 21.
  • Rubber buffers 40 connected to the inner surface of the cup-shaped member 39 at the rear end of the latter by bent-over flaps integral with the member 39 form resilient abutments for the link member 37 during crosscountry skiing.
  • the lever ⁇ 60 is lifted from the position shown in FIG. 3 until the roller 76 abuts against the portion 56 of the cam S5 on the lower bearing bushing 51 of the longer link arm 35, and thereafter pulling on the yoke 138 on the member 92 so that the latter, together with the member 134, is lifted and tilted backwardly to the position shown in FIG. 2.
  • the mova-ble upper part of the heel engaging unit can be removed from the ski 2 while leaving the base plate 1 connected thereto.
  • the skier has several pairs of skis, it is only necessary to obtain base plates 1 vfor each pair of -skis and to mount then the upper part of the unit on the respective base plate.
  • the adjusting screw 17 In the downhill run position the adjusting screw 17 is protected by the cap-shaped member 39 and an adjustment of the screw 17 is possible only when the unit is in the walking position. Furthermore, due to the specific configuration of the lever and the cap-shaped member 39 as shown in the drawing, the whole unit has a closed and pleasing appearance. Due to the pressure of the springs 19 and 21, the threads of the adjusting screw 17 are in tight frictional engagement with the threads 27 on the base plate so that an inadvertent turning of the adjusting screw is prevented.
  • a heel engaging unit for a safety ski binding adapted to cooperate with a front unit of the ski binding for pressing a front portion of a ski boot into the front unit of the ski binding, said heel engaging unit comprising support means adapted to be mounted on a ski rearwardly of the front unit thereon; heel engaging means constructed and arranged to automatically engage the heel of a ski boot when the user steps with the heel into said heel engaging means; and linkage means connecting said heel engaging means to the support means, said linkage means extending rearwardly of said heel engaging means and guiding said heel engaging means movably relative to the ski along a predetermined portion of a substantially circular path having its turning axis in the region of the top surface of the ski and adjacent the front unit of the ski binding so that during use of the ski binding for walking said heel engaging means remains substantially non-shiftably connected to the heel of the ski boot.
  • said linkage means comprises a first parallelogram guide including an elongated member having a front portion and a rear portion, and a pair of first link means respectively pivotally connected at opposite ends thereof to said support means and said elongated member in the region of the rear portion of the latter, and a second parallelogram guide including a pair of second link means, one of said second link means being pivotally connected at one end thereof to one of said first link means and at the other end thereof to said heel engaging means, and the other of said second link means lbeing pivotally connected at one end thereof to said elongated member in the region of the front portion of the latter and at the other end thereof to said heel engaging means.
  • sald locking means include lever means pivotally mounted on said elongated member movable between a first position in which said lever means cooperates with said heel engaging means for maintaining the same in a doWnhill run position in which said second heel engaging member is maintained closely adjacent the top surface of the ski, and a walking position in which said heel engaging means may move along said circular path.
  • a heel engaging unit as defined in claim 1S wherein said spring means is mounted and connected to said lever in such a manner that during movement of said lever from said one to said releasing position, the lever arm of the force component of the spring means which resists turning of the lever to said releasing position will continuously decrease so that the moment necessary to turn said lever to said releasing position decreases while the stress of said spring means increases during a rst part of the turning movement of the lever from said one to said releasing position.
  • said support means includes a base plate adapted to be mounted on the ski, a frame mounted on said base plate movable in longitudinal direction of the ski, said additional spring mean-s being connected to said base plate and sa-id frame and being biased to resist rearward movement of said frame relative to said base plate, said pair of first link means being pivotally connected at one of the opposite ends thereof to said frame.
  • a heel engaging unit for a lsafety ski adapted to cooperate with a front unit of the ski for pressing a front portion of a ski boot into the front unit of the ski binding, said heel engaging unit comprising a lirst quadrangnlar guide linkage including a support member adapted to be mounted on the ski rearwardly of the front unit thereon, a pair of rst link means having lower ends pivotally connected spaced from each other to said support member, and an elongated member having a rear portion to which upper ends of said pair of first link means are pi-Votally connected; heel engaging means constructed and arranged to automatically move to a closed position gripping the heel of a ski boot when the user steps with the heel into the heel engaging means; a pair of second link means, one of said second pair of link means being pivotally connected at one end thereof to one of said rst pair of link means and at the other end thereof to said heel engaging means, and the other of said second pair of link means being pivotally connected at one end thereof to said
  • binding binding 30 A heel engaging unit as dened in claim 29, Wherein said one of said first link means is longer than the other of said first link means.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US727087A 1965-11-11 1968-05-06 Heel engaging unit for a safety ski binding Expired - Lifetime US3432180A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1558765A CH468838A (de) 1965-11-11 1965-11-11 In Verbindung mit einem Skibindungsvorderteil durch Hineintreten sich von selbst schliessender, kabelloser Ski-Sicherheitsbindungsfersenteil

Publications (1)

Publication Number Publication Date
US3432180A true US3432180A (en) 1969-03-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
US727087A Expired - Lifetime US3432180A (en) 1965-11-11 1968-05-06 Heel engaging unit for a safety ski binding

Country Status (5)

Country Link
US (1) US3432180A (de)
AT (1) AT277833B (de)
CH (1) CH468838A (de)
DE (2) DE1988139U (de)
SE (1) SE331444B (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3575437A (en) * 1968-10-19 1971-04-20 Paul Unger Releasable heel retainer for ski binding with means for optional setting for starting and cross country events
US3578350A (en) * 1968-11-14 1971-05-11 Willy Suhner Safety heel ski binding
US3608918A (en) * 1968-06-11 1971-09-28 Marker Hannes Heel-holding device for safety ski bindings
US3675937A (en) * 1969-07-25 1972-07-11 Carpano & Pons Safety bindings for skis
US3801121A (en) * 1970-11-16 1974-04-02 Carpano & Pons Adjustment device for safety ski binding
US3927897A (en) * 1974-06-24 1975-12-23 Donald M Olson Magnetic release system for snow skis
US4489956A (en) * 1981-02-25 1984-12-25 Marker Patentvertwertungsgesellschaft Mbh. Heelholder for safety ski bindings
US20040207177A1 (en) * 2001-05-08 2004-10-21 Tilo Riedel Ski binding

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2265420B1 (de) * 1974-04-02 1979-05-11 Salomon & Fils F

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2758846A (en) * 1953-10-08 1956-08-14 Sigurd M Swensen Ski binding provided with heel control device
US3244431A (en) * 1961-05-08 1966-04-05 Smolka & Co Wiener Metall Ski binding
US3317217A (en) * 1965-03-01 1967-05-02 Wunder Kg Heinrich Heel downholder for cableless safety ski bindings
US3328044A (en) * 1963-07-02 1967-06-27 Klamt Gisbert Ski release binding
US3333859A (en) * 1965-06-02 1967-08-01 Smolka & Co Wiener Metall Safety binding

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2758846A (en) * 1953-10-08 1956-08-14 Sigurd M Swensen Ski binding provided with heel control device
US3244431A (en) * 1961-05-08 1966-04-05 Smolka & Co Wiener Metall Ski binding
US3328044A (en) * 1963-07-02 1967-06-27 Klamt Gisbert Ski release binding
US3317217A (en) * 1965-03-01 1967-05-02 Wunder Kg Heinrich Heel downholder for cableless safety ski bindings
US3333859A (en) * 1965-06-02 1967-08-01 Smolka & Co Wiener Metall Safety binding

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3608918A (en) * 1968-06-11 1971-09-28 Marker Hannes Heel-holding device for safety ski bindings
US3575437A (en) * 1968-10-19 1971-04-20 Paul Unger Releasable heel retainer for ski binding with means for optional setting for starting and cross country events
US3578350A (en) * 1968-11-14 1971-05-11 Willy Suhner Safety heel ski binding
US3675937A (en) * 1969-07-25 1972-07-11 Carpano & Pons Safety bindings for skis
US3801121A (en) * 1970-11-16 1974-04-02 Carpano & Pons Adjustment device for safety ski binding
US3927897A (en) * 1974-06-24 1975-12-23 Donald M Olson Magnetic release system for snow skis
US4489956A (en) * 1981-02-25 1984-12-25 Marker Patentvertwertungsgesellschaft Mbh. Heelholder for safety ski bindings
US20040207177A1 (en) * 2001-05-08 2004-10-21 Tilo Riedel Ski binding
US7207591B2 (en) * 2001-05-08 2007-04-24 Rottefella As Ski binding
US20070126204A1 (en) * 2001-05-08 2007-06-07 Tilo Riedel Ski binding
US7422227B2 (en) 2001-05-08 2008-09-09 Tilo Riedel Ski binding for cross country or telemark ski

Also Published As

Publication number Publication date
AT277833B (de) 1970-01-12
DE1578908B2 (de) 1973-10-31
SE331444B (de) 1970-12-21
DE1578908C3 (de) 1974-05-30
DE1988139U (de) 1968-06-20
CH468838A (de) 1969-02-28
DE1578908A1 (de) 1971-04-08

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