US3567238A - Front jaw of safety binding for skis - Google Patents

Front jaw of safety binding for skis Download PDF

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Publication number
US3567238A
US3567238A US808545A US3567238DA US3567238A US 3567238 A US3567238 A US 3567238A US 808545 A US808545 A US 808545A US 3567238D A US3567238D A US 3567238DA US 3567238 A US3567238 A US 3567238A
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United States
Prior art keywords
holddown
jaw
arms
intermediate member
supporting face
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
US808545A
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English (en)
Inventor
Rudolf Brunner
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Individual
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Individual
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Publication date
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Publication of US3567238A publication Critical patent/US3567238A/en
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Expired - Lifetime legal-status Critical Current

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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
    • A63C9/005—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
    • 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

  • This invention relates generally to ski bindings, and more particularly is directed to improvements in the front jaws of safety bindings for skis.
  • the front jaw comprises a jaw body swingable laterally, as about a pivot secured to the ski, from an operative position where it is yieldably retained, as by a resilient latch, and a pair of diverging holddown arms projecting rearwardly from the body at opposite sides of a central supporting face is provided at the rear of the jaw body to engage lateral areas of the toe portion of a ski boot when the front end of its sole abuts the central supporting face.
  • the front jaw as described above may be referred to as being of the single joint type, in that the holddown arms are fixed relative to the jaw body and the only pivot axis is that about which the jaw body can swing relative to the ski.
  • the front jaw of the single joint type as aforesaid, is to be distinguished from other existing types of front jaws in which a boot clamping member is pivotable relative to the body of the jaw and the body is, in turn, pivotable about a bearing bolt securely attached to the ski, with a resiliently engaged latch means being provided between the boot clamping member and the jaw body.
  • this angular adjustment has been effected either by providing holddown arms which are attachable to the jaw body at different angles with respect to the central supporting face or by providing a central supporting face which is displaceable in the longitudinal direction of the jaw body.
  • the angle of displacement of the jaw body from its operative position at which the boot is released from the jaw is unduly influenced by the kind and the size of the particular boot.
  • Still another object is to provide for adaption to different boots by a simple, strong, and compact structure.
  • An additional object is to provide also for adjustment of the level of the holddown arms with respect to the jaw body.
  • a further object of this invention is to provide for easy manipulation of the adjusting means by affording ready access thereto from the outside and from above.
  • a still further object of this invention is to provide for effective sealing of the jaw body while permitting the necessary adjustments of the holddown arms relative thereto.
  • a front jaw of the single joint type has its holddown arms integral with each other to provide a rigid unit which is secured with respect to the jaw body, as by a screw and slot connection, to permit adjustment of such rigid unit in the longitudinal direction of the jaw body relative to the central supporting face provided on the latter.
  • FIG. 1 is a top plan view of the front jaw of a safety binding for skis according to an embodiment of this invention
  • FIG. 2 is a longitudinal sectional view taken along the line IIII on FIG. 1;
  • FIG. 3 is a view similar to that of FIG. 2, but illustrating another embodiment of the invention.
  • FIG. 4 is a horizontal sectional view taken along the line IVIV on FIG. 2;
  • FIG. 5 is a horizontal sectional view taken along the line VV on FIG. 2, and with a portion of a connecting member being further broken away;
  • FIG. 6 is a view similar to that of FIG. 1, but showing another embodiment of the invention.
  • FIGS. 1, 2 and 4 it will be seen that the invention is there shown applied to a front jaw 1 of a safety binding for skis, which front jaw 1 is of the type comprising a mounting plate 5 having laterally projecting ears 3 with holes 3a (FIG. 4) therein to receive screws 2 (FIG. 1) by which the mounting plate may be securely attached on the upper surface of a ski (not shown).
  • a fixed bearing bolt 4 extends upwardly from the center of mounting plate 5 to define a pivoting axis normal to the upper surface of the ski, and a jaw body 6 in the form of a hollow housing is mounted on bearing bolt 4 so as to be laterally swingable about the axis defined by the latter.
  • bearing bolt 4 is formed with a bore 7 extending diametrically therethrough and slidably receiving a sleeve member 8 which is open at one end and contains a helical spring 8a urging a ball 9 to project from the open end of the sleeve member.
  • a cam member 11 Suitably secured within the hollow interior of jaw body 6 is a cam member 11 having a generally V-shaped cam surface against which ball 9 is urged by spring 8a (FIG. 4).
  • the spring latch constituted by spring urged ball 9 and cam surface 10 functions to yieldably retain body 6 in an operative position where the longitudinal axis of such body extends parallel to the longitudinal axis of the ski and has one of its ends, that is, the end of body 6 appearing at the left in each of FIGS. 1, 2 and 4, directed rearwardly. It will be apparent that a laterally directed force applied tot he rearwardly directed end of body 6, and which is of sufiicient magnitude to overcome the force of spring Set, will be effective to laterally swing body 6 from the aforementioned operative position thereof.
  • sleeve member 8 is longitudinally adjusted in bore 7 for varying the magnitude of the force exerted on ball 9 by spring 8a.
  • longitudinal adjustment of sleeve member 8 is effected by a rotary adjusting member 24 turnable in an axial bore 4a formed in pivot bolt 4 above diametrical bore 7.
  • Adjusting member 24 has a slotted head 24a which projects through the top of body 6 so as to be accessible for turning by a screwdriver or other tool from the exterior of the jaw body.
  • the lower end of adjusting member 24 has an eccentric 24b pro jecting therefrom and being slidably received in a laterally directed slot formed in the top of sleeve 8 so that turning of adjusting member 24 will effect longitudinal movement of the sleeve member.
  • eccentric 24b pro jecting therefrom and being slidably received in a laterally directed slot formed in the top of sleeve 8 so that turning of adjusting member 24 will effect longitudinal movement of the sleeve member.
  • adjusting member 24 may be formed with an annular groove 24c receiving detent balls 26 (FIG. 2) which extend partly into radial holes provided in pivot bolt 4 opposite groove 240 (FIG. 2).
  • jaw body 6 Provided at the rearwardly directed end of jaw body 6 is a central supporting face 12 lying in a laterally directed vertical plane, and holddown arms 14 diverge rearwardly from body 6 at opposite sides of face 12 and at a level below which face 12 extends so that, when the toe end of the sole of a ski boot abuts against supporting face 12, the boot is centralized and the sole of the boot is held down upon the ski by means of arms 14 which provide lateral areas of engagement with the boot.
  • the above described front jaw 1 may be referred to as being of the single joint type in that the only pivot axis therefor is provided by bolt 4 about which body 6 is laterally swingable.
  • arms 14 are formed as integral parts of a holddown member 16 and are in fixed angular relation to each other.
  • the holddown member is in the form of a flat piece and, in addition to arms 14, includes an extension 34 that is centrally located with respect to arms 14 and directed generally in opposition to the latter.
  • Extension 34 is formed with parallel, rectilinear side edges 35 (FIG. 5) and with an arcuately concave end edge 36.
  • holddown member 16 is fixed relative to body 6 by securing means, as hereinafter described in detail, which permit adjustment of holddown member 16 relative to body 6 in the fore and aft direction, that is, parallel to the direc- 4 tion from the pivoting axis of body 6 to the rearwardly directed end of the latter, as indicated by the doubleheaded arrow 40 on FIG. 5, whereby to vary the extent of the rearward projection of arm 14 beyond central supporting face 12.
  • holddown member 16 is fixed relative to body 6 through an intermediate member 18 on which the central supporting face 12 is formed, and the assembly of holddown member 16 and intermediate member 18 is mounted on body 6 so as to be vertically adjustable relative to the latter, that is, adjustable in the direction parallel to the pivoting axis of body 6, whereby to vary the level of arms 14.
  • the rearwardly directed end of hollow body 6 has an opening (FIG. 2) extending thereacross at a location spaced upwardly from the bottom of body 6, and intermediate member 18 is vertically dimensioned to extend over such opening 30 at all vertically adjusted positions of the assembly constituted by members 16 and 18.
  • the attachment of intermediate member 18 to body 6 is achieved by means of screws 22 extending through vertically elongated slots 22a in intermediate member 18 and screwed into tapped holes provided in the rearwardly directed end of body 6 below opening 30 (FIG. 4).
  • screws 22 extending through vertically elongated slots 22a in intermediate member 18 and screwed into tapped holes provided in the rearwardly directed end of body 6 below opening 30 (FIG. 4).
  • the rearwardly directed end of body 6 below opening 30 and the forwardly directed, confronting surface of intermediate member 18 are formed with interengageable serrations 20 (FIG. 2).
  • intermediate member 18 is formed with a forwardly directed projection 32 extending through opening 30 of body 6 and being vertically displaceable within such opening at a level above sleeve 8 of the spring latch.
  • the intermediate member 18 further has a laterally elongated opening 18a (FIG. 2) through which extension 34 of holddown member 16 extends in a forward direction and such opening 18a registers with a channel formed in the underside of projection 32 and which is laterally dimensioned so that the sides 38 of the channel (FIG. 5) will be slidably engaged by, and thereby longitudinally guide, the parallel side edges of extension 34.
  • a screw and slot connection between projection 32 and extension 34 In order to releasably secure holddown member 16 to intermediate member 18 and to permit adjustment of the holddown member relative to body 6 in the direction of the double-headed arrow 40 on FIG. 5, there is provided a screw and slot connection between projection 32 and extension 34.
  • such connection may be constituted by a screw 44 received in a hole 46 in projection 32 and extending vertically downward through an elongated slot 42 in extension 34 into engagement with a nut 48 underlying extension 4. It will be apparent that when screw 44 is tightened, holddown member 16 and intermediate member 18 are fixedly connected to each other and, if desired, the upper surface of nut 48 may be knurled in order to improve the resistance to relative displacement of members 16 and 18.
  • hole 46 may be located in projection 32 so that nut 48 on screw 44 will be disposed with one of its fiat sides engaging against the forwardly directed surface of member 18 (FIG. 2) whereby to prevent turning of nut 48 when screw 44 is being either loosened or tightened. It will be apparent that, when screw 44 is loosened, the elongation of slot 42 permits displacement of holddown member 16 relative to intermediate member 18 in the direction of arrow 40 on FIG. 5, and thereby makes possible variation of the extent of the rearward projection of diverging arms 14 beyond central supporting face 12.
  • the head of screw 44 is enclosed within body 6 when the assembly of holddown member 16 and intermediate member 18 is mounted on jaw body 6, and this has the advantage of preventing the erroneous loosening of arms 14 by the inadvertent manipulation of screw 44 and also prevents the collection of ice or dirt in the head slot of screw 44.
  • screws 22 are removed to disconnect the assembly of holddown member 16 and intermediate member 18 from body 6, whereupon screw 44 is accessible to be loosened and then retightened after the desired relative adjustment of members 16 and 18. Finally, the adjusted assembly of members 16 and 18 is again mounted on body 6.
  • FIG. 3 the adjustable connection of holddown member 16 to intermediate member 18 is effected by a screw 52 which extends through an inclined bore in member 18 so that the screw head 50 is disposed at the portion of member 18 outside of body 6 and is accessible from above holddown member 16.
  • the inclined screw 52 extends downwardly and forwardly through slot 42 in the extension 34 of holddown member 16 and below the latter is threadably engaged in a similarly inclined, tapped bore 56 provided in a nut 58 which may have a knurled upper surface for secure engagement with the underside of extension 34.
  • each of the described embodiments adjustably connects members 16 and 18 by means of a screw 42 or 52 that is fixedly positioned with respect to the intermediate member 18 and received in a slot 42 provided in the holddown member 16, it will be apparent that the alternative to such arrangement can also be used, that is, the screw may extend through an elongated slot in the intermediate member 18 and engage in a tapped bore in the holddown member 16.
  • holdodwn member 16 and intermediate member 18 is vertically adjusted with respect to body 6 so that the flat, rearwardly diverging arms 14 will be at level suitable to engage over a boot sole when the toe end of the latter abuts face 12. Further, holddown member 16 is adjusted relative to intermediate member 18, and hence relative to face 12 at the rearwardly directed end of body 6, so that with the toe end of the boot sole abutting face 12,
  • the simple adjustment of the position of holddown member 16 relative to body 6 serves to adapt the front jaw 1 to use with ski boots of various sizes and toe configurations while ensuring that predetermined forces tending to twist the ski laterally relative to the boot will cause release of the boot from the front jaw and thereby avoid serious injury to the skier.
  • a front jaw 101 which is otherwise similar to the front jaw 1 of FIGS. 1, 2, 4 and 5, has a holddown member 116 with rearwardly diverging arms 114 as integral parts thereof, as in the case of the arms 14 of holddown member 16, but such arms 114 have depending flanges 118 along their outer edges.
  • holddown member 116 is longitudinally adjusted 'with respect to body 106, as previously described, so that, when the toe end of a boot sole 122 abuts the central supporting face 112 at the rearwardly directed end of body 106, as at 120, flanges 118 of arms 114 will effect abutting engagement with lateral areas of the sole edge and arms 114 will extend over the sole merely to hold the latter down on the ski. Thus, in this case, binding is effected at the lateral areas and at the toe end of the boot sole.
  • the necessary adjustments of holddown arms 14 or 114 are made possible with structures that effectively seal the interior of body 6 or 106 against the entry of dirt or ice therein so as to ensure the reliable operation of the spring latch contained in the jaw body. Further, since the arms 14 or 114 are integral parts of a one-piece holddown member, such arms cannot be angularly displaced relative to each other by forces acting on the binding during skiing. Thus, the adjustment of the holddown member 16 or 116 relative to the jaw body, once made, is reliably retained to provide for release of the binding only upon the occurrence of excessive forces.
  • a front jaw according to claim 1 in which said central supporting face lies in a plane parallel to said axis and said arms of the holddown member lie in a plane perpendicular to said axis and below which said face extends so that said arms can extend over the sole of a ski boot to provide said lateral areas of engagement at the cap of the boot while the abutment with said face is at the toe end of the sole.
  • a front jaw according to claim 1 in which said central supporting face lies in a plane parallel to said axis so as to be abutted by the sole of a ski boot at said toe end of the latter, said arms have portions thereof in a plane perpendicular to said axis and below which said face extends so that said portions of the arms can extend over the sole, and said arms further have flange portions depending from the outer edges of the first mentioned portions of the arms to provide said lateral areas of engagement at the edge surface of the sole.
  • said means defining the central supporting face includes an intermediate member at said one end of the body and releasable means to attach said intermediate member to said body and permitting adjustment of said intermediate member relative to said body in the direction of said axis, and in which said screw and slot connection secures said holddown member to said intermediate member so that the level of said arms is changed upon said adjustment of the intermediate member relative to said body.
  • a front jaw according to claim 8 in which said body has an opening at said one end thereof, said holddown member has a forwardly directed extension that is centered with respect to said arms, and said intermediate member has a forwardly directed projection extending into said body through said opening of the latter and constituting a guide slidably receiving said extension of the holddown member.
  • a front jaw according to claim 10 in which said intermediate member has an opening above said face extending therethrough and communicating with said guide, and said extension of the holddown member extends through said opening of the intermediate member and into engagement with said guide.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US808545A 1968-03-27 1969-03-19 Front jaw of safety binding for skis Expired - Lifetime US3567238A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681703068 DE1703068A1 (de) 1968-03-27 1968-03-27 Eingelenkiger Sicherheitsvorderbacken einer Skibindung

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US3567238A true US3567238A (en) 1971-03-02

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US808545A Expired - Lifetime US3567238A (en) 1968-03-27 1969-03-19 Front jaw of safety binding for skis

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US (1) US3567238A (de)
AT (1) AT291829B (de)
CH (1) CH499989A (de)
DE (1) DE1703068A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638958A (en) * 1969-06-11 1972-02-01 Attenhofer Ag A Front jaw for safety ski bindings
USD299734S (en) 1984-12-21 1989-02-07 Marker Deutschland Gmbh Toepiece for ski binding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638958A (en) * 1969-06-11 1972-02-01 Attenhofer Ag A Front jaw for safety ski bindings
USD299734S (en) 1984-12-21 1989-02-07 Marker Deutschland Gmbh Toepiece for ski binding

Also Published As

Publication number Publication date
AT291829B (de) 1971-07-26
CH499989A (de) 1970-12-15
DE1703068A1 (de) 1971-12-23

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