US3455568A - Heel release device for safety ski bindings - Google Patents

Heel release device for safety ski bindings Download PDF

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Publication number
US3455568A
US3455568A US439564A US3455568DA US3455568A US 3455568 A US3455568 A US 3455568A US 439564 A US439564 A US 439564A US 3455568D A US3455568D A US 3455568DA US 3455568 A US3455568 A US 3455568A
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United States
Prior art keywords
heel
release device
thrust member
tension
safety ski
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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
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US439564A
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English (en)
Inventor
Richard Erlebach
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Individual
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Individual
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Publication date
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Publication of US3455568A publication Critical patent/US3455568A/en
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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
    • A63C9/083—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with loosenable cable strap

Definitions

  • a heel release device for safety ski bindings in which a heel thrust means has relatively movable spring biased members with one member engaging the heel groove of a ski boot and with the other member connected to tension elements extending forwardly from the heel thrust means at an angle whereby upward movement of the ski boot will move the point of contact of the heel thrust member with the boot across the line formed by the tension elements to release the ski boot from the ski.
  • This invention relates to a heel release device for safety ski bindings.
  • FIG. 1 is a diagrammatic side elevation of a first embodiment of the invention
  • FIG. 2 is a diagrammatic side elevation of another embodiment
  • FIGS. 3 and 4 are a rear view and a side elevation showing a final embodiment.
  • the heel thrust member 26 conforms to the skiing boot adjacent to the heel groove.
  • a cylindrical sleeve 28 is slidable in a bore of the heel thrust member 26 and accommodates a cylindrical helical compression spring 29.
  • the helical compression spring 29 bears at one end on the end face of the bore or slideway of the heel thrust member 26 and at the other end on an adjusting screw 30, which is screwable in an internal screw thread of the bore of the cylindrical sleeve 28 for adjusting the release moment.
  • the cylindrical sleeve 28 is slidable in the bore or slideway of the heel thrust member 26 against the action of the spring 29 if the heel moves upwardly, and carries the suitably shaped heel thrust member 26 along.
  • the cylindrical sleeve 28 has at the rear an extension 31, which is firmly connected to it and serves for receiving the continuous heel tension cable. Adjacent to the heel, the heel tension cable 32 is guided in downpull hooks 33. Further ahead, the cable may be secured to the side faces of the ski by means which are not shown, or may be hooked to the tension member of a known front tightener. In this embodiment and in the embodiments shown in FIGS. 2 to 4 a change from downhill running to crosscountry skiing is enabled by disengaging the cable 32 from the downpull hook 33.
  • the heel thrust member 26 In case of a forward fall of the skier, the heel thrust member 26 will be pushed upwardly against the action "ice of the spring 29 whereas the cylindrical sleeve 28 is held in position by the tension cable 32.
  • the heel release device swings to the rear and the foot is released.
  • the heel may be placed On the ski while the heel release device lies still on the surface of the ski. The release device is then swung about the point of contact 34 to the operative position shown on the drawing. Where a front tightener is provided, the heel release may be moved to its vertical position and moved against the boot thereafter'by closing the front tightener.
  • FIG. 2 differs from that of FIG. 1 only in that the point of engagement of the heel tension cable 32 is displaced to the longitudinal axis of the spring pressure device.
  • the heel thrust member 35 has on each side a longitudinal slot 36, Whereas the cylindrical sleeve 37 is provided on both sides with bearing eyes 38, which are connected each to one end of the tension cable 32, which is split in this embodiment.
  • the mode of operation of the invention is the same as with the embodiment shown in FIG. 1.
  • the last embodiment which is shown from the rear in FIG. 3 and from the side in FIG. 4, differs from the examples described hereinbefore in that a tension spring 39 is used.
  • This tension spring 39 is suspended in a cylindrical bore or slideway 40 of the heel thrust member 41 from a top closing plug 42 of the bore 40, e.g., with the aid of a pin extending into the turns of the spring.
  • the lower end of the tension spring 39 is connected to a holding element 43, which is slidably fitted on a shaft 44 extending transversely through the heel thrust member.
  • the tension spring 39 may be suspended by other means between the closing plug and the transverse axis.
  • the ends of the shaft 44 protruding from the heel thrust member 41 are designed so that the two ends of the tension cable 32 can be detachably connected to these shaft ends by means of the eyes 45, which are diagrammatically shown.
  • the member 41 is provided on both sides with suitably designed lugs 46, which do not adversely affect the rolling of the depending camlike extension 27 when the skiing boot is released.
  • lugs 46 may suitably be provided also in the embodiments of FIGS. 1 and 2.
  • a heel release device for safety ski bindings comprising a heel thrust member engageable with the heel groove of a skiing boot and which defines a slideway, a slide member slidably received in the slideway of said heel thrust member, spring means for relatively biasing said heel thrust member and said slide member, tension means connected to said slide member and adapted to be fixed to a ski forwardly on the sides of the heel of the skiing boot, the connection between said tension means and said slide member constituting a pivotal axis parallel to the surface of the ski about which said heel thrust member and slide member can pivot as a unit, said heel release device operating to pivot and thereby release when pursuant to excessive tension the point of contact between the heel thrust member and the heel groove of the ski boot is caused by relative sliding between said members to be above the line between the point at which said tension means is fixed to the ski, and said tension means is connected to said slide member.
  • a heel release device characterized in that the heel thrust member conforms to the real part of meninges-6t aridhas a cam-like exten- References Cited sion extending below the heel groove.
  • a heel release device charac- FOREIGN PATENTS terized in that the spring means is a tension spring 1711853 7/1952 Austriarnounted in the slideway of the heel thrust member, which 5 1,190,118 3/1959 f tension spring is connected at one end to the top end of 258334 1/1950 Swltzerland' the slideway and at the other end to a shaft which is slidable relative to the heel thrust member, and the ten- A N HERSH Pnmaly Exammer sion means is connected to the shaft.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US439564A 1964-03-20 1965-03-15 Heel release device for safety ski bindings Expired - Lifetime US3455568A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT244064A AT272166B (de) 1964-03-20 1964-03-20 Sicherheitsskibindung

Publications (1)

Publication Number Publication Date
US3455568A true US3455568A (en) 1969-07-15

Family

ID=3534386

Family Applications (1)

Application Number Title Priority Date Filing Date
US439564A Expired - Lifetime US3455568A (en) 1964-03-20 1965-03-15 Heel release device for safety ski bindings

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US (1) US3455568A (de)
AT (1) AT272166B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3573878A (en) * 1968-04-19 1971-04-06 Hannes Marker Rear tightener for safety ski bindings

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH258334A (fr) * 1949-07-20 1948-11-30 Yovanovitch Lazare Dispositif presse-talon pour ski.
AT171853B (de) * 1950-03-13 1952-07-10 Brunschweiler & Cie A Niederhaltevorrichtung für Skischuhe
FR1190118A (fr) * 1957-12-28 1959-10-09 Dispositif de fixation de sécurité pour ski

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH258334A (fr) * 1949-07-20 1948-11-30 Yovanovitch Lazare Dispositif presse-talon pour ski.
AT171853B (de) * 1950-03-13 1952-07-10 Brunschweiler & Cie A Niederhaltevorrichtung für Skischuhe
FR1190118A (fr) * 1957-12-28 1959-10-09 Dispositif de fixation de sécurité pour ski

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3573878A (en) * 1968-04-19 1971-04-06 Hannes Marker Rear tightener for safety ski bindings

Also Published As

Publication number Publication date
AT272166B (de) 1969-06-25

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