US3578804A - Safety abutment of ski binding - Google Patents

Safety abutment of ski binding Download PDF

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Publication number
US3578804A
US3578804A US783843A US3578804DA US3578804A US 3578804 A US3578804 A US 3578804A US 783843 A US783843 A US 783843A US 3578804D A US3578804D A US 3578804DA US 3578804 A US3578804 A US 3578804A
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US
United States
Prior art keywords
toe end
boot
sole
jaw
abutment device
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
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US783843A
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English (en)
Inventor
Jean Joseph Alfred Beyl
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Individual
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Individual
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Publication date
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Publication of US3578804A publication Critical patent/US3578804A/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
    • A63C9/085—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
    • A63C9/005—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
    • A63C9/08557—Details of the release mechanism

Definitions

  • the present invention relates to ski bindings and has specific reference to safety abutment devices adapted to retain the toe end of a ski boot in its normal position on a ski.
  • Abutment devices of this character comprise as a rule a jaw pivotally mounted on a vertical pivot and urged to its normal skiing position by a resilient holding mechanism.
  • this jaw is so designed that it can properly receive the toe end of a ski boot and subsequently be capable of holding this end against motion both forwards and laterally on either side.
  • two different types of abutment devices are found among existing models.
  • the abutment devices comprise at the rear a concave jaw forming a relatively wide angle adapted to receive the toe end of the sole of the boot to be held against movement.
  • This jaw is such that the toe end of the sole engages the jaw sides with the two corners of its toe end.
  • the safety abutment devices of the second type are designed with a view to coact with the rounded toe end of the upper instead of with the sole of the ski boot. Abutment devices of this type are described and illustrated in the applicants U.S. Pat. No. 3,194,574.
  • the abutment devices of this second type comprise at the rear on the one hand a central bearing surface engageable by the toe edge of the boot sole and on the other hand a pair of lateral arms adapted to engage laterally the corners of the rounded toe end ofthe boot upper.
  • these two arms are pivotally mounted on the abutment body so that their angular spacing can be adjusted as a function of the width of the boot upper so as to engagethe sides thereof when the toe end of the boot contactsthe bearing surface provided on the abutment body.
  • locking means are provided for adjusting separately the position of the two lateral arms.
  • This safety abutment is characterized essentially in that as the two lateral arms provided at the rear end thereof fomi an unitary structure with the jaw body, they constitute with the central portion thereof a concave, smooth surface adapted to fit around the toe end of the boot upper.
  • thecontour of this surface in a horizontal plane comprises on the one hand a part-circular central portion having a radius of curvature corresponding to the smallest radius of curvature. existing at the toe end of the ski boot upper, and on the other hand two rectilinear portions corresponding to the lateral arms and forming with each other an angle of the order of 70" to 95, which is sufficient for receiving the rounded toe end of the boot upper having the greatest possible radius of curvature.
  • FIG. 1 is a plane view to scale from above showing a safety abutment device according to the invention
  • FIG. 2 illustrates diagrammatically the two maximum and minimum curvatures likely to be encountered with different types of rounded toe ends of ski boots uppers
  • FIG. 3 is a side elevational view of the abutment device of FIG. 1, which in this case is shown on a different scale;
  • FIG. 4 is a plan view from above showing a ski boot retained in its normal position by a safety abutment device according to this invention, the rounded toe end of the boot upper being shown with the maximum radius of curvature;
  • FIG. 5 is a fragmentary plane view of the same boot and safety abutment device after the boot has pivoted through a certain angle as a consequence of a torsional stress exerted thereon;
  • FIG. 6 is a view similar to FIG. 4 but showing a boot upper having a minimum radius of curvature at its rounded toe end;
  • FIG. 7 is a plane view from above showing. another form of embodiment of a safety abutment device according to this invention.
  • FIG. 8 is a similar view of the same abutment device after it has been pivoted through a certain angle
  • FIG. 9 is a side elevational view of the same abutment member.
  • the safety abutment device comprises a rotary body 1 pivotally mounted about a vertical pivot'pin 2.
  • This pin 2 is carried by a baseplate 3 adapted to be secured by means of screws 4 to the top surface of a ski.
  • the rear end of this abutment device has substantially the shape of a concave jaw adapted to receive preferably in snugfitting engagement the rounded toe endS of the upper ofaski boot C.
  • the abutmentbody carries two arms 6 extending laterally and rearwardly so as to form an angle therebetween.
  • the two divergent arms 6 are formed integrally withthis body. Besides, the inner faces of these arms and the aforesaid part-circular central portion 7 constitute together a smooth bearing surface adapted to be engaged by the rounded toe end '5 of the upper of aski boot C.
  • this bearing surface comprises on the one hand the above-defined part-circular portion 7 and on the other hand, laterally, two rectilinear portions 9 consisting of the inner faces of said arms 6.
  • the radius of curvature r of said part-circular central portion corresponds to the smallest radius of curvature R likely to be encountered on the toe end 5a of the upper of a ski boot.
  • the two rectilinear divergent portions 9 of this bearing surface form together an I of a value selected from the range of about 70 to The value of this angle should be sufficient to enable these two arms 6 to receive therebetween the rounded toe'end 5b of the upper of a ski boot having the largest possible radius of curvature R at the toe end of this upper.
  • the lateral arms 6 overlie the side portions of the sole of the ski boot 'C. Under these conditions, these two arms can safely prevent the sole from being lifted oh the ski top surface.
  • this abutment device comprises a mechanism of any known and suitable type for normally urging the jaw 1 to its skiing position, unless an abnormally high torsional stress is exerted thereon by the skiers boot.
  • this abutment device is adapted to receive a I boot C, of which the rounded toe end of the upper a has the smallest possible radius of curvature R
  • the curvature of the rounded toe end 5a is at the most coincident with the part-circular contour of the central portion 7 of the smooth bearing surface formed at the rear of the jaw.
  • the contact area is limited by the endmost points 100 (see FIG. 6).
  • this same abutment device is also adapted to receive the rounded toe end 511 of the upper of a ski boot C having the greatest possible radius of curvature R at its toe end (see FlGS. 4 and 5).
  • the rounded toe end 5b of the ski boot upper does not engage the bottom of the part-circular portion 7 of the jaw bearing surface.
  • this rounded toe end engages the smooth surface at points denoted 10b in FIG. 4.
  • the depth of penetration of the rounded toe end of the boot upper is changed, only very slightly in the two extreme cases contemplated hereinabove.
  • the length of the lever arm a through which the boot actuates the body 1 of the abutment device for transmitting a torsional stress is also modified to a very small degree.
  • the safety abutment device according to this invention can advantageously be used for equipping skis let out on hire for it can safely be used with ski boots of different types and/or sizes, without requiring any modification of the initial setting of the mechanism when changing from one pair of boot to another.
  • FIG. 5 illustrates a ski boot C having pivoted through an angle ,6 just before being released completely. Now in this position the point of engagement of the rounded toe end of its upper has attained the position denoted 11b, i.e. very close to its normal position shown at 10b in H0. 4.
  • the length of the lever arm a varies but slightly.
  • the resilient force retaining the boot can be kept at a nearly constant value if the holding and return mechanism incorporated in the abutment device is designed with a view to exert a constant effort during its operation.
  • the leather wall of the rounded toe end of the upper of a ski boot has a smooth surface as contrasted with the front edge of a sole which is rather rough and has surface unevennesses due to the superposition of several layers.
  • the bearing surface 7, 9 of the jaw is very smooth. in any case, considering an aluminum jaw the latter can advantageously be polished to provide the desired smooth surface.
  • the thrust P exerted on the boot by the heel binding means is transmitted only through the rounded toe end 5 of the upper to the bearing surface 7, 9 of the jaw.
  • the rounded toe end of the upper tends to accommodate the curvature of the part-circular portion 7 of the jaw.
  • the abutment device according to this invention may advantageously be arranged to afford a relatively great amplitude of the pivotal movement of the boot before its complete release. As long as this pivot angle B is not attained the boot remains in engagement with the jaw and can be restored to its initial position if the holding mechanism of the device provides the necessary resilient return force.
  • the boot is restored to its normal skiing position after short, low-amplitude torsional stress. Besides, it is clear that the boot will be released completely in case of a major torsion stress exerted during a longer time period.
  • H08. 7 to 9 of the drawing illustrate another form of embodiment of the safety abutment device of ski binding according to the present invention.
  • This device comprises on the one hand a retaining mechanism of the type described and illustrated in the US. Pat. application filed by the applicant on Nov. l968 for Safety Ski Binding" and corresponding to the French Pat. application No. 128,874 filed on Nov. 20, 1967, this mechanism being designed to afford a greater amplitude of pivotal move ment of the ski boot before its complete release.
  • This device Ia comprises a jaw having the same characteristics as in the device shown in H0. 1.
  • the two rectilinear portions 9 of the bearing surface form with each other an angle I having a value of about 93.
  • the part-circular central portion 7 has a radius of curvature of about 1 inch so as to correspond substantially to the smallest possible radius of curvature of the rounded toe end of the upper of a ski boot. In the case of a ski boot having the maximum radius of curvature R at the toe end of its upper, this toe end bears at points 10b against the two lateral arms 6 of the jaw.
  • the body la of the safety abutment device is adjustable in the vertical direction by means of an adjustment screw 12.
  • its level can be adjusted in relation to the fastening or baseplate 3a as a function of the thickness of the sole 13 of the corresponding sole.
  • the jaw adapted to coact with the rounded toe end of the upper of a ski boot is disposed directly on the rear end of the rotary abutment body.
  • this jaw could also be independent and consist of a separate member pivoted for example to the abutment body.
  • Safety abutment device for retaining the toe end of a ski boot. which toe end has a sole and a toe upper. comprising a jaw body rotatably mounted on a vertical pivot. resilient means interconnecting said jaw body and the vertical pivot for holding said jaw body against movement under normal conditions of use and releasing said jaw body under conditions of abnormal torsional stress.
  • said jaw body comprising a central curved portion and two laterally extending arms integral with said central curved portion for receiving the toe upper therein said toe upper being adapted to contact said arms and said central curved portion over a substantial portion thereof to provide for low contact stresses in said toe upper, said jaw body overlying said sole and being positioned such that the front portion of the sole does not abut any portion of said safety abutment device.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US783843A 1967-12-29 1968-12-16 Safety abutment of ski binding Expired - Lifetime US3578804A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR134220 1967-12-29

Publications (1)

Publication Number Publication Date
US3578804A true US3578804A (en) 1971-05-18

Family

ID=8643888

Family Applications (1)

Application Number Title Priority Date Filing Date
US783843A Expired - Lifetime US3578804A (en) 1967-12-29 1968-12-16 Safety abutment of ski binding

Country Status (5)

Country Link
US (1) US3578804A (de)
JP (1) JPS4831334B1 (de)
AT (1) AT303580B (de)
DE (1) DE1815589C3 (de)
FR (1) FR1556379A (de)

Citations (3)

* 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
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

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178339B (de) * 1958-03-24 1964-09-17 Henry De Place Sicherheitsskibindung
FR1336704A (fr) * 1962-06-01 1963-09-06 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
US3037785A (en) * 1959-08-21 1962-06-05 Place Henry De Safety knock-off device for ski binder
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

Also Published As

Publication number Publication date
DE1815589A1 (de) 1969-07-24
AT303580B (de) 1972-11-27
DE1815589C3 (de) 1981-10-01
FR1556379A (de) 1969-02-07
DE1815589B2 (de) 1981-02-05
JPS4831334B1 (de) 1973-09-28

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