US3406981A - Toe iron for safety ski bindings - Google Patents

Toe iron for safety ski bindings Download PDF

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Publication number
US3406981A
US3406981A US571534A US57153466A US3406981A US 3406981 A US3406981 A US 3406981A US 571534 A US571534 A US 571534A US 57153466 A US57153466 A US 57153466A US 3406981 A US3406981 A US 3406981A
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US
United States
Prior art keywords
spring
toe iron
pivoted member
pivot pin
stop
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
US571534A
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English (en)
Inventor
Scheib Hermann
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 US3406981A publication Critical patent/US3406981A/en
Assigned to MARKER-PATENTVERWERTUNGSGESELLSCHAFT MBH., A SWISS CORP. reassignment MARKER-PATENTVERWERTUNGSGESELLSCHAFT MBH., A SWISS CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MARKER, HANNES
Anticipated expiration legal-status Critical
Assigned to MARKER INTERNATIONAL COMPANY reassignment MARKER INTERNATIONAL COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MARKER-PATENTVERWERTUNGSGELLSCHAFT GMBH
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
    • A63C9/085—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
    • A63C9/08578—Details of the release mechanism using a plurality of biasing elements
    • 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
    • A63C9/0855—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 pivoting about a vertical 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
    • A63C9/085—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
    • A63C9/005—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

  • a toe iron for safety ski bindings comprising a pivot pin which is secured to the ski, a pivoted member mounted on said pivot pin and extending at right angles to the ski surface, a spring element controlling the pivotal movement of said pivoted member about said pivot pin, said spring element consisting of a torsional wire spring having crossing free spring arms which are substantially parallel and spaced apart behind the crossing, said pivoted member having a stop which is disposed between the spring arms and engaged by said spring arms under initial stress when the pivoted member is in its central position.
  • this very strong spring must be horizontally disposed so that the overall length is very large.
  • the toe iron has a very low stability in its central position because in this position the resistance of the spring to a deflection of the toe iron is very small and progressively increases only as the deflection proceeds.
  • the manufacture of this toe iron is highly expensive owing to the need for a strong coil spring, the large overall length and the high-grade material which must be used for the pivot pin provided with the flat.
  • the means for holding the pivoted member in its central position and for returning this member to said position after a deflection comprises surfaces which are oblique with respect to the axis of the pivot pin and formed on one of the members which are pivotally movable relative to each other, and a pressure element of the other member, which pressure element may also consist of an oblique surface, or of a ball, a roller or the like, and
  • Such a seizing in a partly deflected position may also occur in the known safety binding described first hereinbefore because the tightener which acts on the heel to produce the forward clamping pressure moves the foot forwardly when the toe iron is being deflected and the restoring force of the spring is not suflicient, owing to the small lever arm described hereinbefore, to reliably overcome the pressure of the tightener and restore the foot to its original position.
  • the spring element consists of a torsional wire spring having crossing free spring arms, which are substantially parallel and spaced apart behind the crossing, each of the members which are pivotally movable relative to each other has a stop, which is disposed between the spring arms and engaged by said spring arms under initial stress when the toe iron is in its central position.
  • the torsion spring When the foot has been released during a fall, the torsion spring will immediately return the toe iron to its operative position so that no manipulation is required before the skier can step into the binding.
  • the spring arms are only in point contact with the stops on the members which are pivotally movable relative to each other so that the frictional forces are so small that they can be virtually neglected in a consideration of the function of the toe iron according to the invention. There is no deflection of forces and no mechanical advantage so that the release moment is always approximately as large as the restoring torque acting on the toe iron and a seizing of the boot during the releasing operation is prevented.
  • Another important advantage of the toe iron according to the invention resides in that any trouble due to icing is avoided because there are no large surfaces which can be joined by ice, and the torsional spring acting directly in the direction of the pivotal movement would immediately break any resistance due to ice.
  • the toe iron may comprise in a manner known per se a sole holder, which is pivoted to the pivoted member on a pivot pin which is parallel to the pivot pin for the pivoted member, and which sole holder extends over the pivoted member and has at its forward end a depending stop nose, which just as the stop of the pivoted member extends between the spring arms of the torsion spring.
  • the stop provided on the baseplate serves only for holding the toe iron in is central position and for ensuring a return of the deflected toe iron to this central position.
  • the stress of the torsion spring and the utilization of said spring is doubled.
  • a weaker spring may be used than in an embodiment in which one spring arm bears on a stop which is secured to the ski.
  • the increase in force during the outward pivotal movement may be very small.
  • This increase in force depends on the nature of the torsion spring employed, the wire material, the number of convolutions etc.
  • the increase in force is generally only about Owing to this relatively small increase in force, it is not necessary in general to provide for an adjustment of the releasing torque, although such adjustment may be provided for, if desired, by a dislocation of the points where the movable stops engage the spring arms.
  • this may be accomplished in that the torsion spring is mounted on an adjusting member, which is displaceable in the direction of the spring arms relative to the baseplate, which is secured to the ski, which adjusting member can be fixed in position and has a slot for the passage of the pivot pin.
  • the pivoted member is mounted on the pivot pin with the aid of a slot so as to be forwardly displaceable. Even with a single-pivot toe iron, this arrangement eliminates the need for a rearward movement of the foot during the outward pivotal movement. Owing to the tightener pressure from the rear, such rearward movement could cause a seizing of the foot so that the release would be prevented.
  • the pivoted member must be guided so that it returns to its initial position also in the longitudinal direction of the ski when the pivoted member is being restored by the torsion spring.
  • the pivoted member may be provided at its forward end with a roller, which bears on a forwardly curved cam wall, which is formed on the baseplate and disposed laterally of the longitudinal center line of the ski.
  • the Australian patent specification No. 223,091 discloses a safety toe iron in which soleholder wings are mounted on the pivoted member and by the two arms of a torsional wire spring are held in their central position and restored to the same after a deflection.
  • the resistance of a conventional ball detent device must be overcome by an excessive torque.
  • the torsion spring is under no initial stress or under no substantial initial stress and its free spring arms do not cross.
  • torsion springs can be used for controlling the release torque of a safety toe iron, for eflecting a return of the toe iron to its normal position after slight lateral jolts, and for returning the toe iron also after the foot has been released, and what advantages are obtained by such an arrangement.
  • FIG. 1 is a longitudinal sectional view showing a first embodiment of a toe iron according to the invention
  • FIG. 3 is sectional view taken on line 33 of FIG. 1 and showing the toe iron in a deflected position
  • FIG. 4 is a side elevation, partly in section, showing another embodiment which enables an additional adjust ment
  • FIG. 5 a top plan view, partly in section, showing the embodiment of FIG. 4,
  • FIG. 7 a top plan view showing the embodiment of FIG. 6,
  • the collar screw 37 in the upper end of pin 2 slidably secures the pivoted member 4 and the spring retainer 32 to the base plate 1.
  • a slot 38 in the member 4 slidably engages pin 2.
  • member 4 can move forward on pivot 2 because of the cooperation of cam 27, roller 28 and slot 38, as best seen in FIGURE 10.
  • the cam wall 27 engaged by the pressure roller 28 extends on both sides of the longitudinal center line of the ski and presents a convex surface to roller 28.
  • a toe iron according to claim 1 characterized in that the pivoted member is mounted on the pivot pin with the aid of a slot so as to be forwardly displaceable.
  • a toe iron according to claim 1 characterized in that the spring has an initial stress of 30-40 kg. and its 7 8 force is increased by about 20% until the release position FOREIGN PATENTS is reached. 2 43 3 196 References Cited 1 2 France' UNITED STATES PATENTS BENJAMIN HERSH, Primal Examiner.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US571534A 1965-08-28 1966-08-10 Toe iron for safety ski bindings Expired - Lifetime US3406981A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM0066484 1965-08-28

Publications (1)

Publication Number Publication Date
US3406981A true US3406981A (en) 1968-10-22

Family

ID=7311825

Family Applications (1)

Application Number Title Priority Date Filing Date
US571534A Expired - Lifetime US3406981A (en) 1965-08-28 1966-08-10 Toe iron for safety ski bindings

Country Status (5)

Country Link
US (1) US3406981A (de)
AT (1) AT276181B (de)
CH (1) CH441085A (de)
DE (1) DE1478149A1 (de)
ES (1) ES329910A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3671053A (en) * 1968-07-29 1972-06-20 Smolka & Co Wiener Metall Ski binding
US3722902A (en) * 1969-11-11 1973-03-27 Marker Hannes Toe iron for safety ski bindings
US3733085A (en) * 1969-11-28 1973-05-15 Hope Kk Ski boot toe fixture
US4134603A (en) * 1976-05-15 1979-01-16 Heinrich Wunder Kg. Safety ski binding

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1326431A (fr) * 1962-03-13 1963-05-10 Fixation de ski
US3105696A (en) * 1960-01-16 1963-10-01 Smolka & Co Wiener Metall Safety binding with swivel jaw
US3329438A (en) * 1965-04-17 1967-07-04 Lusser Robert Front binding of a safety binding for skis

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3105696A (en) * 1960-01-16 1963-10-01 Smolka & Co Wiener Metall Safety binding with swivel jaw
FR1326431A (fr) * 1962-03-13 1963-05-10 Fixation de ski
US3329438A (en) * 1965-04-17 1967-07-04 Lusser Robert Front binding of a safety binding for skis

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3671053A (en) * 1968-07-29 1972-06-20 Smolka & Co Wiener Metall Ski binding
US3722902A (en) * 1969-11-11 1973-03-27 Marker Hannes Toe iron for safety ski bindings
US3733085A (en) * 1969-11-28 1973-05-15 Hope Kk Ski boot toe fixture
US4134603A (en) * 1976-05-15 1979-01-16 Heinrich Wunder Kg. Safety ski binding

Also Published As

Publication number Publication date
DE1478149A1 (de) 1969-09-25
CH441085A (de) 1967-07-31
ES329910A1 (es) 1967-06-01
AT276181B (de) 1969-11-10

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Legal Events

Date Code Title Description
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, P.O. BOX 26548, SALT

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

Effective date: 19880331

Owner name: MARKER INTERNATIONAL COMPANY,UTAH

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

Effective date: 19880331