US3100119A - Tightening device for ski bindings - Google Patents

Tightening device for ski bindings Download PDF

Info

Publication number
US3100119A
US3100119A US107739A US10773961A US3100119A US 3100119 A US3100119 A US 3100119A US 107739 A US107739 A US 107739A US 10773961 A US10773961 A US 10773961A US 3100119 A US3100119 A US 3100119A
Authority
US
United States
Prior art keywords
lever
tightening
heel
ski
spring
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 - Lifetime
Application number
US107739A
Other languages
English (en)
Inventor
Marker Hannes
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3100119A publication Critical patent/US3100119A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • A63C9/001—Anti-friction devices
    • 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
    • A63C9/082—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with swivel heel-plate
    • 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
    • A63C9/083—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with loosenable cable strap
    • 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
    • A63C9/085—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08535—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a mobile body or base or single jaw

Definitions

  • the invention relates to a tightening device for ski bindings which engages on the boot heel, comprising a tightening lever and at least one tension spring connected through a link to the tightening lever.
  • the prior known tightening devices are comparatively difficult to operate and also show various other defects.
  • the short lever arm of the tightening lever is supported either directly or through the link on the heel groove of the ski boot and opposes a considerable force to the actuation thereof, this force being further increased by the force necessary for tensioning the spring.
  • the object of the present invention is to provide a tightening device which is easy to actuate and in addition has a long closing travel.
  • a tightening device for ski bindings the said device engaging on the heel of the ski boot and comprising a tightening lever and at least one helical spring connected through a link to the said lever, characterised in that the shorter lever arm of the tightening lever which, in use, is closer to the boot heel than the main part of the tightening lever has arranged thereon a roller projecting beyond the lever arm, the shaft of the said roller being perpendicular to the plane of movement of the tightening lever, and the roller being supported, in use, on and being arranged to roll in the heel groove of the ski-boot on actuating the tightening lever.
  • the roller arranged on the short end of the tightening lever facilitates the closing of the new tightening device.
  • the tightening lever or the link no longer bites into the leather of the heel, as was formerly the case, because of the forwardly directed force of the spring, but the roller on the end of the tightening lever rolls with considerably reduced friction in the heel groove.
  • This has the advantage that the force necessary for actuating the tightening device is substantially reduced. By this means, it becomes possible to lengthen the short lever arm of the tightening lever and this has two important results. Firstly, the opening and closing movement of the tightening device is increased, i.e.
  • the binding can be applied more easily to the ski boot, because the tightening loop formed by the short arm of the tightening lever, the link and the tension spring is greatly increased.
  • the spring tension is increased by the greater closing movement, so that the ski boot is held with a strong pressure.
  • softer or more resilient springs are possible, which produce the same pressure on the boot with a large clos ing movement as a hard spring with a short closing movement.
  • soft springs have a larger capacity for linear adaptation, i.e. larger tolerances can conveniently be operative when mounting the binding, without substantially altering the pressure produced by the spring and acting on the heel.
  • the new tightening device is advantageously employed with two almost straight helical springs, which are arranged substantially on the two longitudinal sides of the heel and one of which engages on the short lever arm of the tightening lever and the other of which engages through a link on the long lever arm of the said lever.
  • a roller is preferably arranged on that end of the link engaging on the spring. Since the almost straight springs are arranged on the longitudinal sides of the heel, they cause little friction, and at the same time the spring stressing is much more favourable than is the case with the curved helical springs adapted to the heel groove, which formerly were usual. The two almost straight helical springs produce a very good pressure action and they do not suffer fatigue so quickly as the hitherto usual curved springs.
  • FIG. 1 is a side elevation of a ski and of a ski boot with a complete ski binding
  • FIG. 2 is a side elevation of the new tightening device with the tightening lever open
  • FIG. 3 is a plan view of the tightening device, also with the tightening lever open,
  • FIG. 4 is a plan view of the tightening device with the tightening lever closed
  • FIG. 5 is a partial view of the tightening device in the direction V of FIG. 4,
  • FIG. 6 is a plan view of a second embodiment of the new tightening device
  • FIG. 7 is a plan view of yet another embodiment
  • FIG. 8 is a plan view showing the design of a safety tightener
  • FIG. 9 is a partial section on the line IX-IX of FIG. 8.
  • a ski boot 2 is arranged on the ski 1, the said boot being engaged in known manner by a safety plate 3 or any other holding means acting on the front edge of the boot sole.
  • the new tightening device 5 acts on the heel 4 of the ski boot 2.
  • FIG. 1 also shows a long strap 6 which can be used in addition to the novel tightening device by good skiers in order to achieve an even more intimate connection between the ski boot and the ski.
  • the reference numeral 7 indicates a tightening lever which is connected through a link 8 to a helical spring 9.
  • a roller 10 Arranged on the shorter lever arm 7a of the tightening lever 7 which shorter arm is closer to the boot heel than the main part of the arm 7 is .
  • a roller 10 Project in-g beyond the arm 7a.
  • a.pivot pin 11 Serving as the shaft for the roller is a.pivot pin 11, which also pivotally connects the link 8 to the shorter arm 7a of the tightening lever 7.
  • a helical spring 9 is connected to the link 8.
  • the tightening device is'fixed on a plate 13 arranged to be rotatable on the ski.
  • This plate which is rotatable about the pivot 14, is preferably provided when the tightening device is torbe used in combiantion with a so-called cheek plate.
  • Thelateral swinging of the ski boot is facilitated or only made possible by the pivotability of the plate 13.
  • lateral cheek plates 15 can also be arranged on the rotatable plate. Rings 16 serve for drawing through and fixing'a' long strap which is not shown and which can be nsedr-by good skiers for downhill or mountain skiiing. Such a long strap can however be dispensed with for normal skiing purposes, especially as a substantially greater pressure can be obtained with the present tightening device.
  • the operation of the tightening device shown in FIG. 7 is as follows. With the closing of the tightening lever -7 in the direction B, the roller 10 is supported in the heel groove. With this embodiment, as illustrated, the tightening, lever is rotated about a pivot pin 17, which is connected to the rotatable plate 13 by means of a second link 18. With the closing of the tightening lever, the roller '10 rolls in the heel groove, whereby the friction between the short lever arm and the said groove is substantially reduced. Therefore, a much smaller force is necessary for closing the new tightening device than that required with the hitherto known tightening devices.
  • This advantage can be utilized in order to lengthen the short lever arm 7a, which is characterized by the spacing a of the pivot pins 11 and 17.
  • the closing and opening travel of the tightening device is increased, as already mentioned above.
  • the tightening loop is larger, and also has the advantage that the helical spring 9 can be more strongly tensioned.
  • the pressure exerted by the tightening device on the heel of the boot is substantially increased.
  • the ski boot is firstly pressed more firmly on to the ski and secondly, since the tension of the tightening device extends diagonally, it is pressed more strongly against the safety plate 3 engaging on the toe of the boot.
  • a very rigid and intimate connection is achieved between the ski boot and the ski, thus facilitating control of the ski.
  • FIGS. 2 to illustrate a particularly advantageous embodiment of the new tightening device With this advantageous constructional form, two approximately rectilinear helical springs 19 and 20 are arranged on the two longitudinal sides of the heel.
  • the helical spring 19 is connected through the link 21 to the long lever arm 22! of the tightening lever 22, while the spring 20 acts on the short lever arm 22a of the tightening lever 22.
  • a roller 23 Provided on that .end of the link 21 which engages the spring 19 is a roller 23.
  • a roller 24 is arranged on the short lever arm 22a 'of the tightening lever 22.
  • connecting elements 25, 26 are also provided, which have aU-shaped profile for accommodating the rollers 23, 24 (see FIG. 5).
  • a pivot pin 27 Serving as the shaft for the roller 23 is a pivot pin 27, which also pivotally connects the link 21 to the connecting element 25.
  • a pivot pin 28 is also provided, which serves as a shaft for the roller 24 and also for holding the connecting element 26.
  • the link 21 is pivoted on the long lever arm 22b of the tightening lever by pivot pins 29.
  • the fulcrum of the tightening lever is not at one of the pivot pins 28 or 29, but is between those two pins because of the symmetrical arrangement of the two helical springs 19, 20.
  • the two helical springs 19, 20 are approximately rectilinear, as will be seen from the drawing.
  • the almost rectilinear spring travel causes a good and uniform spring stressing, which is not obtained with the prior known tightening devices with curved springs engaging on the heel.
  • a very good pressure by the rollers 23, 24 on the heel is produced by these straight springs.
  • the helical springs 19, 20 do not bear on the heel groove in the first part of the closing operation, since only the rollers 23, 24 are supported therein.
  • the tightening device is also fixed on a rotatable plate 30.
  • This fixing can be effected by set bolts 31, which preferably are longitudinally adjustable.
  • a lateral displacement of the boot is also prevented in this case by lateral cheek plates 32.
  • the prior know-n tightening devices also have the disadvantage that they lie fiat on the ski when in the open position. However, since the highest point of the heel groove is at 2 to 3 centimetres from the ski surface, the tightening device must be lifted this amount and then placed in the heel groove. Since the tightening device is very loose when the tightening lever is open, it always slips out of the heel groove again if it is not held by one'hand.
  • FIG. 6 shows another constructional example in which the helical springs 34, '35 are secured in a known control cable 37 guided by means of staple hooks 36.
  • This control cable is secured in a holding device 38 which is preferably provided with different detents and fixed on the ski in front of the ski boot.
  • the tightening device itself can be constructed in exactly the same way as in the two constructional examples described above.
  • the said rollers can if necessary also be milled or provided with grooves or the like extending parallel to their axes.
  • the invention is not limited only to the embodiments illustrated. It is moreover also possible for the tightening device to be secured not on a rotatable plate, but on a rigid plate, on two separate plates or with similar fixing devices on the ski.
  • FIG. 8 shows a tightening device constructed as a safety tightening means.
  • a holding member 39 is connected to one end of the control cable 37, it being possible for the end 40 of the tightening lever 41 .to be forced into the member 39.
  • These cooperating components are so arranged that with excessive pull on the cable (i.e. with a dangerous fall forwardly), the end 40 of the lever is pulled out of the holding member 39 and thus the tightening device is automatically opened by the control cable.
  • the holding member is formed as a nut 42 which can be screwed on to a threaded bolt 44 connecting the end of the cable 37 to the end of the spring 43 and can thus be adjusted longitudinally of the said bolt 44.
  • This holding member in the form of a nut 42 comprises a hook-shaped rocker arm 45 which, as shown in the drawing, engages over the end 40 of the tightening lever 41. With excessive pull on the cable, the two springs 43 and 46 are expanded so strongly that the end 40 of the tightening lever is pulled out of the hook-shaped holding member 45 and then the tightening device is automatically opened under the action of the strong cable pull.
  • the combination of the roller-type tightening means according to the invention as shown in FIG. 8 with the previously described safety device has the particular advantage that with a dangerous forward fall, the tightening loop consisting of the springs 43, 46, the link 47 and the lever 41, opens instantaneously and to such a degree that the loop can slip off the heel, this being due to the small friction made possible by interposition of the rollers 23, 24.
  • the closing pressure produced by the link 47 and tightening lever 41 can be made comparatively strong, so that therefore the enlargement of the tightening loop when opening the tightening device can be comparatively large.
  • a tightening device for ski bindings said device being mountable on a ski and being engageable with the heel of a ski boot, comprising:
  • a tightening lever having a long lever arm and a short lever arm, the tightening lever being pivotally movable in a plane which extends lengthwise of the ski, the short lever arm being pivotally connected to the rearward end of one spring;
  • a first roller connected to the rearward end of said one spring for rotation about an axis perpendicular to the plane of movement of the tightening lever;
  • a second roller connected to the rearward end of said other spring for rotation about an axis perpendicular to the plane of movement of the tightening lever;
  • rollers being disposed between the rearward ends of said springs and being of such size that they extend inwardly a substantial distance beyond the innermost edges of said tightening lever and said link so that the portion of the periphery of said rollers closest to the heel will engage the heel and hold the rearward ends of the springs out of engagement with the heel.
  • a tightening device in which the pivotal connection of the short lever arm and said one spring is coaxial with the rotational axis of the first roller and the pivotal connection of the link to the other spring is coaxial with the rotational axis of said second roller.
  • a tightening device in which both coil springs are the same size,, so that the tightening device is approximately symmetrical.
  • a tightening device in which the front ends of the springs are fixedly connected to a heel plate which is mounted on the ski, the said heel plate being provided with ring holders for drawing through and securing a long strap.
  • a tightening device in which the springs are secured to the heel plate by adjustable set bolts.
  • a tightening device in which the set bolts and thus also the remainder of the tightening device are held in a position sloping up to the heel groove by upwardly inclined surfaces on the heel plate.
  • a tightening device in which the coil springs are connected to a control cable which is secured to the ski in front of the ski boot and which is guided by staples.
  • a tightening device in which one end of the control cable has connected thereto a holding member into which the end of the tightening lever can be guided, these co-operating parts being so arranged that with excessive pull on the cable, the end of the tightening lever is pulled out of the holding member and thus the tightening device is automatically opened by the control cable.
  • a tightening device in which the :holding member is constructed as an adjustable nut on a threaded bolt connecting the end of the cable to one end of the spring and comprises a hook-shaped rocker arm which serves for holding the end of the tightening lever.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US107739A 1960-05-09 1961-05-04 Tightening device for ski bindings Expired - Lifetime US3100119A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM45243A DE1185520B (de) 1960-05-09 1960-05-09 Fersenstrammerzug fuer Skibindungen

Publications (1)

Publication Number Publication Date
US3100119A true US3100119A (en) 1963-08-06

Family

ID=7305238

Family Applications (1)

Application Number Title Priority Date Filing Date
US107739A Expired - Lifetime US3100119A (en) 1960-05-09 1961-05-04 Tightening device for ski bindings

Country Status (5)

Country Link
US (1) US3100119A (enrdf_load_stackoverflow)
CH (1) CH399977A (enrdf_load_stackoverflow)
DE (1) DE1185520B (enrdf_load_stackoverflow)
GB (1) GB943048A (enrdf_load_stackoverflow)
IT (1) IT649742A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3168326A (en) * 1962-03-24 1965-02-02 Molino Ottavio Ski binding
US3198537A (en) * 1963-11-04 1965-08-03 James K Silberman Ski binding plate
US3214186A (en) * 1964-04-16 1965-10-26 Spier I Martin Releasable heel holding means for a ski binding
US3284092A (en) * 1964-03-16 1966-11-08 Merwin B Rumaner Safety ski binding
US3357713A (en) * 1965-09-28 1967-12-12 Jr Clarence W See Safety ski binding
US3442524A (en) * 1965-11-20 1969-05-06 Hans Menzl Ski binding having a forward release which is floating or secured to the ski and effective during a forward fall
US6554295B2 (en) * 2000-04-03 2003-04-29 K-2 Corporation Strapless toelock binding for snowboards

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE481375C (de) * 1929-08-23 Alois Theimer Doppelstrammer fuer Schneeschuhbindungen
AT140881B (de) * 1934-02-26 1935-03-11 Josef Krupka Strammer für Skibindungen.
AT147359B (de) * 1935-07-27 1936-10-26 Siegmund Werner Fa Elastisches Fersenstück für Skibindungen.
CH207305A (de) * 1934-02-03 1939-10-15 Reuge Henri Skibindung mit Fersenhalterschlaufe.
DE691296C (de) * 1936-09-22 1940-05-22 Brunschweiler & Cie A Fersenzugglied fuer Skibindungen
CH231083A (de) * 1942-11-23 1944-02-29 Beerli Louis Skibindung.
US2747885A (en) * 1954-04-13 1956-05-29 Weiner Metallwaren Und Schnall Ski binding with tension cable
US2836428A (en) * 1955-04-21 1958-05-27 Marker Hannes Ski binding having swivelable heel securing means
FR1190118A (fr) * 1957-12-28 1959-10-09 Dispositif de fixation de sécurité pour ski

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE481375C (de) * 1929-08-23 Alois Theimer Doppelstrammer fuer Schneeschuhbindungen
CH207305A (de) * 1934-02-03 1939-10-15 Reuge Henri Skibindung mit Fersenhalterschlaufe.
AT140881B (de) * 1934-02-26 1935-03-11 Josef Krupka Strammer für Skibindungen.
AT147359B (de) * 1935-07-27 1936-10-26 Siegmund Werner Fa Elastisches Fersenstück für Skibindungen.
DE691296C (de) * 1936-09-22 1940-05-22 Brunschweiler & Cie A Fersenzugglied fuer Skibindungen
CH231083A (de) * 1942-11-23 1944-02-29 Beerli Louis Skibindung.
US2747885A (en) * 1954-04-13 1956-05-29 Weiner Metallwaren Und Schnall Ski binding with tension cable
US2836428A (en) * 1955-04-21 1958-05-27 Marker Hannes Ski binding having swivelable heel securing means
FR1190118A (fr) * 1957-12-28 1959-10-09 Dispositif de fixation de sécurité pour ski

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3168326A (en) * 1962-03-24 1965-02-02 Molino Ottavio Ski binding
US3198537A (en) * 1963-11-04 1965-08-03 James K Silberman Ski binding plate
US3284092A (en) * 1964-03-16 1966-11-08 Merwin B Rumaner Safety ski binding
US3214186A (en) * 1964-04-16 1965-10-26 Spier I Martin Releasable heel holding means for a ski binding
US3357713A (en) * 1965-09-28 1967-12-12 Jr Clarence W See Safety ski binding
US3442524A (en) * 1965-11-20 1969-05-06 Hans Menzl Ski binding having a forward release which is floating or secured to the ski and effective during a forward fall
US6554295B2 (en) * 2000-04-03 2003-04-29 K-2 Corporation Strapless toelock binding for snowboards

Also Published As

Publication number Publication date
IT649742A (enrdf_load_stackoverflow)
CH399977A (de) 1965-09-30
GB943048A (en) 1963-11-27
DE1185520B (de) 1965-01-14

Similar Documents

Publication Publication Date Title
US3291500A (en) Heel-holding device for ski safety binding
US4266806A (en) Safety ski binding
US2610861A (en) Ski binding
US4036509A (en) Ski brake apparatus
US3145027A (en) Safety ski binding
US3887205A (en) Safety ski binding
US2745672A (en) Automatically releasable ski binding
US2879071A (en) Ski binding having automatically releasable heel anchor
US3100119A (en) Tightening device for ski bindings
US2643888A (en) Ski binding
US3278195A (en) Safety ski binding
US3744810A (en) Toe iron for safety ski bindings
US6527293B1 (en) Binding for a snow-sport device
US3572738A (en) Securing head for safety ski bindings
US2669459A (en) Safety ski binding
US4239257A (en) Cross country ski binding
US4214773A (en) Heel holder for release ski binding
US4108466A (en) Ski brake
US3403920A (en) Heel tightener for ski bindings
US3950002A (en) Front jaws for ski bindings
US4168084A (en) Ski binding having a step-in clamping device
JPS60210279A (ja) スキ−ブ−ツ及び該ブ−ツを取り付ける安全ビンデイング
US3608918A (en) Heel-holding device for safety ski bindings
US3095209A (en) Heel safety device for ski binding
US3594015A (en) Heel portion of safety ski bindings devoid of cables