US3610649A - Toe iron for safety ski bindings - Google Patents

Toe iron for safety ski bindings Download PDF

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Publication number
US3610649A
US3610649A US761036A US3610649DA US3610649A US 3610649 A US3610649 A US 3610649A US 761036 A US761036 A US 761036A US 3610649D A US3610649D A US 3610649DA US 3610649 A US3610649 A US 3610649A
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US
United States
Prior art keywords
pivot pin
soleholder
toe iron
iron according
swivel member
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
US761036A
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English (en)
Inventor
Ludwig Axthammer
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
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Filing date
Publication date
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Application granted granted Critical
Publication of US3610649A publication Critical patent/US3610649A/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
    • A63C9/001—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
    • A63C9/08535—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
    • A63C9/08—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 baseplate carries a vertical pivot pin, on which a pivoted member is rotatably mounted which carries a soleholder, which is pivoted to the pivoted member on an axis which is parallel to the pivot pin on the baseplate.
  • the soleholder is normally held against rotation by a detent device, which comprises a first member that is movable relative to a second member of the detent device to release the latter.
  • the first member of the detent device is under the influence of the pivoted member in such a manner that the soleholder will be released when said member has performed a predetermined pivotal movement from its normal position.
  • the present invention relates to a toe holder which is intended for use in safety ski bindings and which has a baseplate carrying a vertical pivot pin, on which a pivoted member is rotatably mounted which carries a soleholder, which is pivoted to the pivoted member on an axis which is parallel to the pivot pin on the baseplate, the soleholder being normally held against rotation by a detent device.
  • the-detent resistance is adjustable so that the force required for a release, the so-called release hardness, is variable.
  • a contact pressure is required between the skiing boot and the soleholder and the value of said contact pressure and the detent resistance determine the extent of the elastic zone which must be traversed before the detent is released and in which forces are resiliently taken up which act transverse to the ski and which are harmless to the leg of the skier.
  • release hardnesses With different release hardnesses, the extent of the elastic zone differs too. A large elastic zone will be obtained if the detent resistance is high and the pressure applied by the skiing boot is high too. The elastic zone is small if both the detent resistance and the contact pressure applied by the skiing boot are small.
  • the detent device comprises a first member which is movable relative to a second member of the detent device to release the latter.
  • the first member is under the influence of the pivoted member in such a manner that the soleholder will be released when said member has performed a predetermined pivotal movement from its normal position.
  • the detent element of the detent device is coaxial to the pivot pin that is fixed to the ski.
  • the detent element is held on said pivot pin and the soleholder is provided with the detent socket.
  • the free end of the pivot pin may serve as a detent element.
  • the detent element may consist of a pin, which is longitudinally slidably held in the pivot pin and with its free end protrudes from the pivot pin and is adapted to be forced into the pivot pin against a returning force.
  • oblique cam surfaces are provided on the soleholder on both sides of the detent socket.
  • the toe holder comprises a helical compression spring which opposes the movement of the pivoted member and is mounted on the pivot pin that is fixed to the ski
  • a feature of the invention may reside in that the helical compression spring bearing at one end on the pivoted member bears at its other end on a nut, which is longitudinally displaceably and nonrotatably held in the pivoted member and screwed on' the pivot pin, which for this purpose is provided with screw threads.
  • a scale is provided at least on one longitudinal side of the slot and the nut may carry a stud, which enters a vertical slot in the pivoted member to hold the nut against rotation.
  • the soleholder comprises a pedal for engaging the underside of the forward end portion of the sole of the skiing boot.
  • the action of a force having a direction thatis transverse to the ski results normally in the occurrence of dangerous frictional forces between the skiing boot and the ski, which forces oppose a movement of the skiing boot in the releasing sense and cannot be exactly predicted so that they cannot be taken into account when the binding is being adjusted.
  • the occurrence of such frictional forces will be virtually avoided if the last-mentioned feature of the invention is adopted.
  • FIG. 1 is a central longitudinal sectional view showing a first embodiment of a toe iron according to the invention.
  • FIG. 2 is a top plan view of FIG. 1.
  • FIG. 3 is a top plan view similar to FIG. 2 but shows the toe iron in the released position.
  • FIG. 4 is a central longitudinal sectional view showing a toe iron in an embodiment which is only slightly modified from the first.
  • MG. 5 is a central longitudinal sectional view showing a toe holder in a third embodiment.
  • the baseplate 1 has two screw holes 2 for use in a screw-connecting the toe iron to a ski.
  • a vertical pivot pin 3 is riveted into the baseplate and a pivoted member 4 is rotatably mounted on the pivot pin 3.
  • the pivot pin also carries a helical compression spring 5, which acts at one end on the pivoted member and bears at its other end on a collar of the pivot pin.
  • the pivot pin 3 is provided at its lower end with two oblique surfaces 6 and 7, which in the normal position of the pivoted member are in mating engagement with the oblique surfaces of the pivoted member 4, which is urged against the oblique surfaces 6 and 7 by the helical compression spring 5.
  • the oblique surfaces 6 and 7 form camming surfaces for the pivoted member so that the latter is moved axially upwardly against the force of the helical compression spring.
  • a soleholder 9 is secured by a pivot pin 8 to the pivoted member 4.
  • the two arms l0 and 11 of the soleholder engage the forward end portion of the sole on top and embrace the toe portion of the boot.
  • the vertical portion of the soleholder bears on the toe portion of the boot and comprises in known manner two teeth 12 and 13, which engage corresponding recesses in the toe portion of the sole to ensure a positive transmission of motion under the action of lateral forces.
  • That portion of the soleholder 9 which normally overlies the pivoted member 4 is formed with a blind hole 14, which forms part of a detent device.
  • the detent element of thedetent device is constituted by the stepped free end portion 15 of the pivot pin 3.
  • the pivoted member 4 and the soleholder 9 are normally interlocked.
  • This interlock can be released in that the pivoted member 4 is rotated to a predetermined extent about the pivot pin 3 because this rotation positively results in an upward axial displacement of the pivoted member 4 against the force of the helical compression spring 5.
  • the oblique surfaces 6 and 7 of the pivot pin 3 may be designed so that the axial displacement of the pivoted member and an increase of the stress of the helical compression spring 5 take place only until the release position is reached whereas virtually no effort is required to continue the rotation of the pivoted member about the pivot pin 3 If a force in a direction that is oblique to the longitudinal direction of the ski acts on the soleholder 9 via a tooth 12 or 13, that force will tend to turn the soleholder and with it the pivoted member 4 about the pivot pin 3 because the parts 4 and 9 are interlocked against the force of the helical compression spring 5 as the member 4 runs up on the oblique surfaces 6 and 7 during its pivotal movement.
  • the soleholder 9 To return the toe iron to a position ready for skiing after a safety release operation, the soleholder 9 must first be pivotally moved until the hole 14 is coaxial to the pivot pin 3. The pivoted member 4 must then be pivotally moved back to the end of the elastic zone and from this position moves automatically back to its normal position by a relaxation of the helical compression spring 5. During the riding of the pivoted member 4 on the oblique surfaces 6 and 7, the end portion 15 of the pivot pin 3 automatically enters the hole 14. The pivoted member 4 is sufficiently strongly locked in its intermediate position under the initial stress of the helical compression spring 5.
  • the toe iron is virtually independent of the pressure applied by the boot.
  • the distance from the teeth 12 and 13 to the pivot pin 3 is relatively large so that the pivotal movement within the elastic zone results only in an insignificant displacement of the skiing boot in the longitudinal direction of the ski and only in a slight increase of the retaining force that is produced by a heel holder.
  • oblique cam surfaces 16 and 17 are provided on the soleholder on both sides of the hole 14. These surfaces are indicated by dash-dot lines in FIGS. 2 and 3.
  • FIG. 4 shows a toe iron which differs from the previously described design in that the force of the helical compression spring 5 need not be overcome for a pivotal movement of the soleholder member 9 to its normal position when the pivoted member 4 is already in its central position.
  • the pivot pin 20 does not have a stepped end portion but carries a plunger 21, which is disposed in an axial bore of the pivot pin and with its free end normally protrudes from the pivot pin.
  • the plunger can be depressed into the pivot pin against the force of a relatively weak restoring spring 22.
  • the toe iron is exactly the same in design and mode of operation as that of FIGS. 1 to 3. For this reason, the same reference characters are used for like parts.
  • FIG. 5 shows a toe iron which embodies the invention and enables an adjustment of the release hardness.
  • the same reference characters are again used for like parts.
  • the pivot pin which is riveted into the baseplate has in this case at its free end no collar but is provided with screw threads in threaded engagement with a nut 26, on which the helical compression spring 5 can hear.
  • the nut is longitudinally slidably and nonrotatably held in the pivoted member 27. It is held against rotation by a stud 28, which enters a vertical slot 29 in the pivoted member.
  • This pin serves at the same time as an indicator of the release hardness.
  • a scale is provided on one longitudinal side of the slot.
  • the nut 26 is shown in the position which corresponds to the smallest release hardness.
  • the nut 26 can be screwed further onto the pivot pin 25 to increase the stress of the helical compression spring 5 in that the pivoted member 27 is rotated together with the soleholder 9. This will not result in a change of the elastic zone or the release point because the latter is determined by the design of the oblique surfaces 6 and 7.
  • the hardness can easily be adjusted without need for a tool because the soleholder 9 constitutes a long lever arm.
  • the soleholder can readily be designed so as to meet this requirement.
  • the soleholder 9 comprises a pedal 18, which engages the underside of the forward end portion of the skiing boot.
  • this sole end portion will not contact the surface of the ski so that the dangerous frictional forces are avoided, which otherwise occur between the skiing boot and the ski as a result of a force that is transverse to the ski.
  • This result is of great significance of the safety function of the device because the frictional forces may be considerable.
  • a toe iron for safety ski bindings comprising a baseplate, a vertical pivot pin secured to said baseplate, a spring carried by said vertical pivot pin, a swivel member rotatably mounted on said vertical pivot pin, a soleholder member rotatably mounted to said swivel member around an axis lying parallel to said vertical pivot pin, said soleholder member being normally held against rotation relative to said swivel member by an antirotation lock, said antirotation lock comprising a locking pin which extends in locked position through a horizontal division between said swivel member and said soleholder member, said soleholder member being unlocked from the locking pin by swinging the swivel member through a predetermined angle out of a central position by relative displacement of the swivel member in opposition to the force of said pivot pin spring.
  • a toe iron according to claim 1, wherein said antirotation lock comprises two parts, one part being mounted coaxially on said vertical pivot pin and the other part being a socket provided in said soleholder.
  • said one part of said antirotation lock comprises a plunger slidably held axially in said pivot pin with the free end portion of said plunger protruding from said pivot pin and restoring means biasing said plunger outwardly.
  • a toe iron according to claim 2 wherein said soleholder defines an oblique cam surface on each side of said socket to guide said one part of said antirotation lock.
  • a toe iron according to claim 6, wherein said adjusting means comprises, a nut contained within said swivel member and threadably engaged with said pivot pin.
  • a toe iron according to claim 8 wherein said swivel member defines a vertical slot through which said stud pro jects, and a release hardness scale is provided on one side of said slot so that said stud constitutes an indicator of the release hardness.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Nonmetallic Welding Materials (AREA)
US761036A 1967-09-22 1968-09-20 Toe iron for safety ski bindings Expired - Lifetime US3610649A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19671578857 DE1578857A1 (de) 1967-09-22 1967-09-22 Spitzenhaltevorrichtung fuer Sicherheits-Skibindungen

Publications (1)

Publication Number Publication Date
US3610649A true US3610649A (en) 1971-10-05

Family

ID=5679107

Family Applications (1)

Application Number Title Priority Date Filing Date
US761036A Expired - Lifetime US3610649A (en) 1967-09-22 1968-09-20 Toe iron for safety ski bindings

Country Status (9)

Country Link
US (1) US3610649A (es)
JP (1) JPS4813374B1 (es)
AT (1) AT289617B (es)
CH (1) CH482451A (es)
CS (1) CS150592B2 (es)
DE (1) DE1578857A1 (es)
ES (1) ES163422Y (es)
FR (1) FR1582330A (es)
NO (1) NO123684B (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3741576A (en) * 1970-05-05 1973-06-26 Salomon Georges P J Ski bindings
US3743309A (en) * 1971-04-28 1973-07-03 Hope Kk Ski boot toe fixture

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4505494A (en) * 1980-12-30 1985-03-19 Tmc Corporation Release type ski binding
US4533156A (en) * 1980-12-30 1985-08-06 Tmc Corporation Toe mechanism for a safety ski binding
AT388677B (de) * 1987-09-09 1989-08-10 Tyrolia Freizeitgeraete Vorderbacken fuer sicherheitsskibindungen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3037785A (en) * 1959-08-21 1962-06-05 Place Henry De Safety knock-off device for ski binder
US3107102A (en) * 1961-04-10 1963-10-15 Ramillon Rene Safety securing means for skis
US3194574A (en) * 1962-06-01 1965-07-13 Beyl Jean Joseph Alfred Safety ski binder
US3201140A (en) * 1961-08-12 1965-08-17 Georg Von Opel Dr H C Safety front jaw for ski bindings or fastenings
US3292941A (en) * 1963-05-17 1966-12-20 Berchtold Ludwig Safety jaw for safety bindings
US3298703A (en) * 1964-04-17 1967-01-17 Marker Hannes Toe iron for safety ski bindings

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3037785A (en) * 1959-08-21 1962-06-05 Place Henry De Safety knock-off device for ski binder
US3107102A (en) * 1961-04-10 1963-10-15 Ramillon Rene Safety securing means for skis
US3201140A (en) * 1961-08-12 1965-08-17 Georg Von Opel Dr H C Safety front jaw for ski bindings or fastenings
US3194574A (en) * 1962-06-01 1965-07-13 Beyl Jean Joseph Alfred Safety ski binder
US3292941A (en) * 1963-05-17 1966-12-20 Berchtold Ludwig Safety jaw for safety bindings
US3298703A (en) * 1964-04-17 1967-01-17 Marker Hannes Toe iron for safety ski bindings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3741576A (en) * 1970-05-05 1973-06-26 Salomon Georges P J Ski bindings
US3743309A (en) * 1971-04-28 1973-07-03 Hope Kk Ski boot toe fixture

Also Published As

Publication number Publication date
DE1578857A1 (de) 1971-12-16
AT289617B (de) 1971-04-26
ES163422U (es) 1971-04-01
CS150592B2 (es) 1973-09-04
CH482451A (de) 1969-12-15
ES163422Y (es) 1971-09-01
NO123684B (es) 1971-12-27
JPS4813374B1 (es) 1973-04-26
FR1582330A (es) 1969-09-26

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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,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