US3744810A - Toe iron for safety ski bindings - Google Patents

Toe iron for safety ski bindings Download PDF

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Publication number
US3744810A
US3744810A US00131977A US3744810DA US3744810A US 3744810 A US3744810 A US 3744810A US 00131977 A US00131977 A US 00131977A US 3744810D A US3744810D A US 3744810DA US 3744810 A US3744810 A US 3744810A
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United States
Prior art keywords
toe iron
slider
levers
toe
iron
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
US00131977A
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English (en)
Inventor
R Jungkind
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.)
Marker International Co
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
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Application granted granted Critical
Publication of US3744810A publication Critical patent/US3744810A/en
Assigned to MARKER-PATENTVERWERTUNGSGESELLSCHAFT MBH., A SWISS CORP. reassignment MARKER-PATENTVERWERTUNGSGESELLSCHAFT MBH., A SWISS CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MARKER, HANNES
Assigned to MARKER INTERNATIONAL COMPANY reassignment MARKER INTERNATIONAL COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MARKER-PATENTVERWERTUNGSGELLSCHAFT GMBH
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A63C9/08—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
    • 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
    • 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
    • A63C9/08507—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 plurality of mobile jaws
    • A63C9/08521—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 plurality of mobile jaws pivoting about a vertical axis, e.g. side release
    • 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
    • A63C9/08557—Details of the release mechanism
    • A63C9/08564—Details of the release mechanism using cam or slide surface
    • 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
    • A63C9/08557—Details of the release mechanism
    • A63C9/08571—Details of the release mechanism using axis and lever

Definitions

  • A63c 9/00 have a common Slider, which is guided in an at least p- [58] Field of Search 280/11.35 T proximately p cam Slot that is fixed t9 the ski and has a stem which extends in the longitudinal direc- [56] References it d tion of the ski.
  • the spring element extends in the longi- UNITED STATES PATENTS tudinal direction of the ski and acts on the slider of the 3,638,959 2/1972 Reuge 280/11.3s T Shder crank mechamsms' 3,603,607 7 Claims, 7 Drawing Figures 9/1971 Marker 280/ll.35 T
  • This invention relates to a toe iron for safety ski bindings, which toe iron comprises two levers, which are pivoted to a toe iron portion that is fixed to the ski and which at their free ends carry respective soleholders and are biased by a spring element toward their normal position.
  • these known toe irons have the advantage that they move through an elastic range before releasing the skiing boot so that they are not susceptible to shock.
  • these toe irons have the important disadvantage that the force which is to be overcome for a release progressively increases beyond the required elastic range so that the skiing boot must be virtually squeezed out of the binding.
  • these toe irons lack an exactly defined release position and the skiing boot which is fully loaded by the spring force moves also relative to the soleholder during its outward pivotal movement.
  • Another disadvantage of these known toe irons resides in that the force required for a release depends also on the shape of the skiing boot. Because a skiing boot is normally not entirely symmetric, the different forces are required for a release of the boot by the toe iron to one side and the other so that the binding cannot be exactly adjusted and there are different margins of safety for twisting falls in different senses.
  • a toe iron for safety ski bindings which toe iron comprises two levers, which are pivoted to a toe iron part that is fixed to the ski and which at their free ends carry respective soleholders and are biased by a spring element toward their normal position
  • each lever forms a crank of a slider crank mechanism
  • these two slider crank mechanisms have a common slider, which is guided in an at least approximately T-shaped cam slot that is fixed to the ski and has a stem which extends in the longitudinal direction of the ski, and the spring element extends in the longitudinal direction of the ski and acts on the slider of the slider crank mechanisms.
  • the elastic movement of the slider depends on the length of the stem of the cam slot, which stem extends in the longitudinal direction of the toe iron, and the spring element will not be stressed further or will be only slightly stressed further when the slider has completed said elastic movement and moves thereafter in those sections of the cam slot which are transverse to the longitudinal direction of the toe iron.
  • the wall surface of the cam slot which is fixed to the ski almost completely takes up the spring force so that there is virtually no resistance to the continued outward pivotal movement of the soleholders until the skiing boot is released.
  • the skiing boot need not be squeezed out of the binding and the forces required for a release of the boot to different sides do not unintendedly differ.
  • freely rotatable backing rollers for the toe edge of the skiing boot may be provided in known manner on the soleholders.
  • an arrangement has been found particularly desirable in which in the normal position of the levers the axes of rotation of the backing rollers are nearer to the longitudinal axis of the toe iron than the pivotal axes of the levers which carry the soleholders.
  • an outward pivotal movement of the skiing boot causes the leading supporting roller to move along an are which is tangent to or intersects the arc of a circle which is at least approximately centered on the axis of rotation of the skiing boot on the ski. This ensures that the skiing boot cannot be displaced forwardly toward the tip of the ski during its elastic movement so that the toe iron and skiing boot can be automatically restored to their normal position without additional effort.
  • the axes of rotation of the backing rollers may be desirably coaxial with the axes on which the links of the slider crank mechanisms are pivoted to the cranks.
  • the common slider of the slider crank mechanisms consists of a rotatably mounted guide roller.
  • the internal friction of the toe iron mechanism is much lower than where a slider moving with sliding friction is employed.
  • a particularly simple arrangement of the spring element will be enabled in that one end of the spring is directly secured to the slider of the slider crank mechanisms.
  • the spring may act on the slider through the intermediary of a rocker lever.
  • the toe iron may be much more compact because the spring may be arranged over the mechanism of the toe iron.
  • an adjusting member is suitably provided, which is slidable in the direction of the longitudinal axis of the rocker lever, and the rocker lever is supported by said adjusting member on a toe iron portion that is fixed to the ski.
  • the adjusting member may be adjusted to change the fulcrum and lever ratio of the rocker lever so that the force required for a release of the toe iron may be changed without need to change the initial stress of the spring.
  • the same optimum elastic range of the spring can always be utilized, regardless of the adjusted force required for a release. This is an important advantage.
  • FIG. 1 is a top plan view showing the toe iron according to the invention in a normal position without the skiing boot.
  • the housing has been removed to facilitate the understanding of the toe iron mechanism.
  • FIG. 2 is a central longitudinal sectional view showing the toe iron of FIG. I with the housing applied.
  • FIG. 3 is a top plan view showing the toe iron in its normal position with the inserted skiing boot and without the housing.
  • FIG. 4 is a top plan view showing the toe iron of FIG. 3 in a position at the end of the elastic range.
  • FIG. 5 is a top plan view showing the toe iron of FIG. 3 in a position after the release of the skiing boot.
  • FIG. 6 is a central longitudinal sectional view showing another embodiment of the toe iron according to the invention.
  • FIG. 7 is a top plan view showing the toe iron of FIG. 6 in its normal position without a skiing boot and without a housing.
  • the toe iron which is shown in FIGS. 1 to 5 comprises a baseplate 1, which is adapted to be screwconnected to a ski and for this purpose is provided with four screw holes 2.
  • Two vertically upwardly extending pivot pins 3 are secured to the baseplate.
  • a channel section lever 4 is rotatably mounted on each pivot pin 3.
  • the free ends of the levers 4 consist of soleholders 5, which can embrace the sole of the skiing boot (see particularly FIG. 3) at the top and laterally. That sole is indicated in the drawing only by dash-dot lines.
  • a link 8 is pivoted to each lever 4.
  • the other end of each link is pivoted to the axle 9 of a freely rotatable guide roller 10.
  • the guide roller 10 is guided in an approximately T-shaped cam slot 11, which is formed in the base plate 1 and has a stem extending in the longitudinal direction of the toe iron.
  • a U-shaped member 12 (see particularly FIG. 2) is mounted on the axle 9 of the guide roller 10 and forms an abutment for a helical tension spring 13, which extends in the longitudinal direction of the toe iron and at its other end is pivoted to a vertical pin 14, which is fixed to the baseplate.
  • the helical tension spring 13 is preferably slightly prestressed and normally holds the toe iron mechanism in the position shown in FIG. 1, in
  • the spring 13 may be replaced to change the force required for a release by the toe iron shown.
  • the forward end of the spring may be secured to an adjustable spring abutment, which is adjustable to vary the initial stress of the spring. This fixation of the forward end of the spring is known and not described more fully.
  • a freely rotatable backing roller 15 is mounted on each of the pivots 7, which in the normal position of the toe iron are nearer to the central longitudinal axis of the toe iron than the pivot pins 3.
  • the boot can move forwardly between the soleholders 5 until the leading edge of the skiing boot engages the backing rollers 15.
  • a slight outward pivotal movement is imparted to the soleholders 5 against the force of the spring 13, as is clearly apparent upon a comparison of FIGS. 1 and 3, so that the skiing boot 6 is automatically centered in its correct position.
  • the toe iron mechanism is covered by a housing 16, e.g., of plastics material (see FIG. 2).
  • the substantially U-shaped housing is placed over the toe iron mechanism and is secured to the baseplate by suitable means, which are not shown.
  • the toe iron mechanism will first perform the movement described hereinbefore until the position shown in FIG. 4 has been reached.
  • the guide roller enters the leading section of the T-shaped cam slot 11 which extends transversely to the longitudinal direction of the toe iron. That section is curved and its center of curvature lies in the longitudinal axis of the pin 14 so that the stress of the spring 13 is not increased during that movement.
  • the force exerted by the spring is taken up by the wall surface of the cam slot 11, which is fixed relative to the ski so that the soleholder can continue its pivotal movement against almost no resistance until the skiing boot is completely released (see FIG. 5).
  • the return of the toe iron to its normal position must be initiated by hand.
  • the toe iron shown in FIGS. 6 and 7 differs from the one described hereinbefore only by the different design of the spring mechanism. Like components are designated with the same reference characters.
  • the spring element does not act directly on the guide roller 10 but a tie rod 20 (FIG. 6) which extends in the longitudinal direction of the toe iron is secured to the U-shaped member 12 which is mounted on the axle 9 of the guide roller 10.
  • a channel member 21 extends at least approximately vertically upwardly and at one of its end faces is welded to the baseplate 1.
  • the web 22 of said channel member 21 is formed with a slot 23, which is transverse to the longitudinal direction of the toe iron and through which the tie rod 20 extends.
  • the leading end of the tie rod 20 is formed with a vertical bore.
  • a screw 25 is articulatedly mounted in said bore and extends between the flanges of member 21.
  • An adjusting member 26 is screwed on the screw 25 and by means of two lateral lugs (see FIG. 7) bears on the leading edges of the flanges of the channel member 21.
  • the top end of the screw 25 is articulatedly mounted on another tie rod 27, which extends rearwardly through a bore 28 in the web 22 of member 21 and at its free end carries a disc 29, which is held by a circlip. That disc 29 serves as an abutment for a helical compression spring 30, which at its other end bears on the web 22 of member 21.
  • the screw 25 is provided at its top end with a head 31, which facilitates a rotation of the screw to move the adjusting member 26 along the screw, which is held against axial movement.
  • the screw 25 is turned so that the adjusting member 26 is moved upwardly or downwardly so that the fulcrum of the screw and the effective lengths of the lever arms are varied. In this way, the force required for a release of the toe iron may be adjusted without need to change the initial stress of thespring. Because the design of the toe iron is the same as in the preceding embodiment in other respects, there is no need to describe its function in more detail.
  • a toe iron for safety ski bindings comprising a toe iron part which is adapted to be fixed to a ski, two levers pivotally mounted to said toe iron part on opposite sides of the longitudinal axis of said toe iron, a soleholder carried by each of said levers and adapted to receive the sole of a skiing boot, a cam slot fixed relative to said ski and having a first portion extending in the forward longitudinal direction of said toe iron and a second portion extending generally transversely to the longitudinal axis of said toe iron, a slider adapted to move along said cam slot, means connecting said slider to each of said levers so as to form a slider crank mechanism which includes said levers, a spring element extending in the longitudinal direction of said toe iron and cooperating with said slider to urge said slider forward and into contact with said first portion of said cam slot when said crank mechanism and soleholders are in their normal position, said slider being moveable against the biasing action of said spring element from said first portion to said second portion of said cam slot during the outward pivotal movement of
  • each of said soleholders comprises a backing roller adapted to contact the sole of a said skiing boot and which is rotatably mounted to said levers at a point which, in the normal position of said levers, is closer to the longitudinal axis of said toe iron than the point at which said levers are pivotally mounted to said toe iron.
  • toe iron of claim 6 in which said toe iron further comprises a second toe iron part fixed relative to said ski and an adjusting member cooperating with said second toe iron part and with said rocker lever such that said rocker lever is adjustable along its longitudinal

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Transmission Devices (AREA)
US00131977A 1970-04-14 1971-04-07 Toe iron for safety ski bindings Expired - Lifetime US3744810A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2017849A DE2017849C3 (de) 1970-04-14 1970-04-14 Vorderbacken für Sicherheits-Skibindungen

Publications (1)

Publication Number Publication Date
US3744810A true US3744810A (en) 1973-07-10

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ID=5768065

Family Applications (1)

Application Number Title Priority Date Filing Date
US00131977A Expired - Lifetime US3744810A (en) 1970-04-14 1971-04-07 Toe iron for safety ski bindings

Country Status (8)

Country Link
US (1) US3744810A (enExample)
JP (1) JPS5416259B1 (enExample)
AT (1) AT305107B (enExample)
CH (1) CH534528A (enExample)
CS (1) CS158695B2 (enExample)
DE (1) DE2017849C3 (enExample)
ES (1) ES390114A1 (enExample)
FR (1) FR2089540A5 (enExample)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900207A (en) * 1973-02-20 1975-08-19 Hope Kk Toe fixture for a ski safety binding
US3902730A (en) * 1972-12-18 1975-09-02 Gertsh Ag Ski binding part
US3902728A (en) * 1972-12-01 1975-09-02 Salomon & Fils F Ski binding
US3993327A (en) * 1973-09-26 1976-11-23 Gertsch Ag Front jaw for safety ski bindings
US4067594A (en) * 1976-04-05 1978-01-10 Hope Co., Ltd. Ski boot toe binding
US4143886A (en) * 1975-09-30 1979-03-13 Etablissements Francois Salomon Et Fils Safety ski binding
US4685696A (en) * 1983-05-12 1987-08-11 Marker International Front piece for a safety ski-binding
US20040090359A1 (en) * 2001-03-16 2004-05-13 Mcmakin Douglas L. Detecting concealed objects at a checkpoint
US20130207356A1 (en) * 2012-02-07 2013-08-15 Fritz Barthel Front unit for a sliding board binding, touring binding and ski-jumping binding
US9220969B2 (en) 2014-04-09 2015-12-29 Salomon S.A.S. Ski binding

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3173719D1 (en) * 1980-10-01 1986-03-20 Bendix Ltd Variable pressure ratio valve
CH659953A5 (fr) * 1984-10-19 1987-03-13 Haldemann Ag Fixation de securite d'une chaussure sur un ski.
DE9401309U1 (de) * 1994-01-26 1995-06-01 Marker Deutschland Gmbh, 82438 Eschenlohe Vorderbacken einer Skibindung
FR3046082B1 (fr) 2015-12-23 2018-01-12 Salomon Sas Fixation de ski

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194574A (en) * 1962-06-01 1965-07-13 Beyl Jean Joseph Alfred Safety ski binder
US3232631A (en) * 1962-11-06 1966-02-01 Pierre A Habegger Safety attachment device for skis
US3584891A (en) * 1969-06-27 1971-06-15 Joseph N Khazzam Ski binding releasable toe clamp
US3603607A (en) * 1967-09-28 1971-09-07 Hannes Marker Toe iron for safety ski bindings
US3638959A (en) * 1969-09-05 1972-02-01 Henri Reuge Toe stop member for ski safety bindings

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2364620A (en) * 1942-09-25 1944-12-12 Ernest O Crocker Safety ski binding
AT163752B (de) * 1945-11-27 1949-08-10 Karl Kinzl Skibindung
DE1478133C3 (de) * 1965-04-17 1979-05-31 Hannes Marker Sicherheitsskibindungen Kg, 8100 Garmisch-Partenkirchen Vorderer Bindungsteil einer Ski-Sicherheitsbindung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194574A (en) * 1962-06-01 1965-07-13 Beyl Jean Joseph Alfred Safety ski binder
US3232631A (en) * 1962-11-06 1966-02-01 Pierre A Habegger Safety attachment device for skis
US3603607A (en) * 1967-09-28 1971-09-07 Hannes Marker Toe iron for safety ski bindings
US3584891A (en) * 1969-06-27 1971-06-15 Joseph N Khazzam Ski binding releasable toe clamp
US3638959A (en) * 1969-09-05 1972-02-01 Henri Reuge Toe stop member for ski safety bindings

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3902728A (en) * 1972-12-01 1975-09-02 Salomon & Fils F Ski binding
US3902730A (en) * 1972-12-18 1975-09-02 Gertsh Ag Ski binding part
US3900207A (en) * 1973-02-20 1975-08-19 Hope Kk Toe fixture for a ski safety binding
US3993327A (en) * 1973-09-26 1976-11-23 Gertsch Ag Front jaw for safety ski bindings
US4143886A (en) * 1975-09-30 1979-03-13 Etablissements Francois Salomon Et Fils Safety ski binding
US4067594A (en) * 1976-04-05 1978-01-10 Hope Co., Ltd. Ski boot toe binding
US4685696A (en) * 1983-05-12 1987-08-11 Marker International Front piece for a safety ski-binding
US20040090359A1 (en) * 2001-03-16 2004-05-13 Mcmakin Douglas L. Detecting concealed objects at a checkpoint
US20130207356A1 (en) * 2012-02-07 2013-08-15 Fritz Barthel Front unit for a sliding board binding, touring binding and ski-jumping binding
US9220969B2 (en) 2014-04-09 2015-12-29 Salomon S.A.S. Ski binding
US9795862B2 (en) 2014-04-09 2017-10-24 Salomon S.A.S. Ski binding

Also Published As

Publication number Publication date
JPS5416259B1 (enExample) 1979-06-21
ES390114A1 (es) 1973-06-01
DE2017849C3 (de) 1981-06-25
DE2017849B2 (de) 1980-09-18
CH534528A (de) 1973-03-15
AT305107B (de) 1973-02-12
FR2089540A5 (enExample) 1972-01-07
DE2017849A1 (de) 1971-10-28
CS158695B2 (enExample) 1974-11-25

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AS Assignment

Owner name: MARKER-PATENTVERWERTUNGSGESELLSCHAFT MBH., BAAR, S

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MARKER, HANNES;REEL/FRAME:004089/0014

Effective date: 19820804

AS Assignment

Owner name: MARKER INTERNATIONAL COMPANY,UTAH

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MARKER-PATENTVERWERTUNGSGELLSCHAFT GMBH;REEL/FRAME:004906/0245

Effective date: 19880331

Owner name: MARKER INTERNATIONAL COMPANY, P.O. BOX 26548, SALT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MARKER-PATENTVERWERTUNGSGELLSCHAFT GMBH;REEL/FRAME:004906/0245

Effective date: 19880331