US3920256A - Safety ski binding - Google Patents

Safety ski binding Download PDF

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Publication number
US3920256A
US3920256A US493086A US49308674A US3920256A US 3920256 A US3920256 A US 3920256A US 493086 A US493086 A US 493086A US 49308674 A US49308674 A US 49308674A US 3920256 A US3920256 A US 3920256A
Authority
US
United States
Prior art keywords
arresting
boot
ski binding
safety ski
lateral
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
US493086A
Other languages
English (en)
Inventor
Brigitte S Sittmann
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.)
Vereinigte Baubeschlag - Fabriken Gretsch and Co GmbH
Original Assignee
Vereinigte Baubeschlag - Fabriken Gretsch and Co GmbH
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
Application filed by Vereinigte Baubeschlag - Fabriken Gretsch and Co GmbH filed Critical Vereinigte Baubeschlag - Fabriken Gretsch and Co GmbH
Application granted granted Critical
Publication of US3920256A publication Critical patent/US3920256A/en
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
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0846—Details of the release or step-in mechanism
    • 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
    • A63C9/007—Systems preventing accumulation of forces on the binding when the ski is bending
    • 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
    • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0841—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable with a single jaw
    • A63C9/0842—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable with a single jaw the jaw pivoting on the body or base about a transverse 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
    • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0845—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable the body or base or a jaw pivoting about a vertical axis, i.e. side release
    • 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
    • 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
    • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0847—Details of the manual release
    • 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
    • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0848—Structure or making

Definitions

  • ABSTRACT A safety ski binding having a hollow boot fastener adapted to be swung upwardly out of a normal boot fastening position about a transverse shaft and laterally about a vertical shaft counter to arresting forces, an arresting surface provided on the inside on said boot fastener, an arresting member cooperable with said arresting surface, spring means biasing said memher in the direction of the boot into engagement with said arresting surface, said arresting surface having a plurality of vertical arresting cams which rise to a vertical release point during a vertical movement relative to the arresting member and superimposed also a plurality of lateral arresting cams which rise to lateral release points during a lateral movement relative to the arresting member, the lateral arresting cams having centers of curvature located on-the side of the arresting surface towards the boot, and said arresting member having two arresting projections movable into engagement with the arresting surface on both sides of a central longitudinal plane thereof when the boot fastener is in a central position
  • the invention relates to a safety ski binding with a boot fastener which can be swung out of the normal boot fastening position about a transverse shaft upwards and about a vertical shaft to both sides counter to arresting forces, wherein an arresting member spring-loaded in the direction of the boot engages on an arresting surface provided on the inside on the boot fastener having side-by-side a plurality of vertical arresting cams which rise to the vertical release point during a vertical movement relative to the arresting member and superimposed also a plurality of lateral arresting cams which rise to the lateral release points during a lateral movement relative to the arresting member.
  • the problem of the invention is therefore to provide a safety ski binding of the type described hereinbefore where, whilst maintaining a compact construction, the surface pressures on the arresting surface are reduced, thereby ensuring a substantial constancy of the release values.
  • this problem is solved in that the centres of curvature of the lateral arresting cams are located on the side of the arresting surface towards the boot, and the arresting member has two juxtaposed arresting projections which when the boot fastener is in the central position engage with the arresting surface on both sides of its central longitudinal plane. Therefore, the projections provided according to-the invention engage laterally around the arresting surface and can therefore be positioned at a relatively large distance from the pivot so that the lateral forces on the arresting member, and the surface pressures on thearresting surface are reduced.
  • the arresting surface can be kept relatively narrow because in the case of a lateral release in each case the arresting projection which is in contact with the arresting surface moves relatively inwardly. It is therefore sufficient if the arresting surface merely extends between the two arresting projections. Therefore this construction is relatively simple and therefore economic to manufacture.
  • the arresting member is curved in the same direction but somewhat more than the lateral arresting cams. This ensures a very level support of the projections on the arresting surface so that a clean sliding process is ensured during the lateral release in both directions.
  • the arresting surface width decreases downwardly so that the spacing of the contact surfaces between arresting member and arresting surfaces decreases downwards. Therefore the lateral release force decreases with increasing vertical release, which is advantageous, because during the vertical release (frontal fall) the skiers leg is subject to a particularly high load. However, with the construction according to the inven- 2 tion the lateral release force is continuously reduced so that the danger of the skiers leg being broken is substantially eliminated.
  • the boot fastener has a vertical rotating shaft which is fitted to the housing so as to be pivotable about the transverse shaft and supports the front portion of the boot fastener pivotable about the vertical shaft, whereby the vertical shaft of the boot fastener is located between the transverse shaft and the arresting surface.
  • This construction also contributes to reducing the lateral release force with increasing vertical release because it makes it possible for the arresting surface to extend downwardly close to the vertical shaft.
  • the curvatures of the lateral arresting cams and the arresting member are circular.
  • the arresting surface comprises two surfaces which are substantially homologous towards the central longitudinal plane.
  • the curvature of the radial sections of the arresting surface can increase from top to bottom.
  • the lateral release force is increased which can be advantageous if, due to other effects (the arresting surface coming closer to the vertical shaft or convergence of the contact surfaces of the two projections) too great a decrease in the lateral release force could occur with a vertical release.
  • a further embodiment of the invention provides for projections on the housing which with the binding closed cooperate with lugs on the boot fastener in such a way that lateral release is prevented within a predetermined upward pivoting range of the boot fastener. Therefore lateral release can only take place after vertical release has advanced by a predetermined amount. This is particularly advantageous if during a frontal fall the skiers leg is also exposed to torsional stress/In this case the pressure on the ball of the foot is so great that the lateral release of the front binding is no longer secured.
  • the vertical release on the heel binding has already advanced to such an extent that the projections and lugs of this embodiment become disengaged and permit a relatively easy lateral release of the heel binding.
  • the vertical release cams preferably have a first portion along which a substantially constant holding down force is exerted on the boot fastener whereby this portion is followed by a portion with a rising holding down force which is in turn followed by a peak on which the holding down force disappears. After the peak the cam appropriately falls off whereupon a force occurs on the boot fastener in the opening direction.
  • the arresting member can be moved away from the arresting surface counter to the spring tension and between the housing and the boot fastener acts a spring which is held open under tension.
  • the front edge of the arresting member is formed by the generatrix of a roller fitted to the arresting member and which rotates about a transverse shaft.
  • the front portion of the boot fastener is divided in the centre of boot.
  • FIG. 1 shows a vertical longitudinal section of a safety ski binding according to the invention for a heel in the closed condition
  • FIG. 2 a horizontal sectionof the binding shown in FIG. 1;
  • FIG. 3 shows a section analogous to FIG. 1 of the same binding opened in the vertical direction
  • FIG. 4 shows a horizontal section identical to FIG. 2 of the binding in the lateral released condition
  • FIGS. 5a 52 show radial sections along the lines AtoO-EinFIGl
  • FIGS. 6 and 7 show horizontal sections of a further embodiment.
  • a housing 12 is fitted in longitudinally displaceable manner to a base plate 28 fixed to a ski.
  • One or more juxtaposed spiral springs 29 on the boot place the housing 12 under a pretension.
  • the displacement of housing 12 brought about by springs 29 is limited by a stop member 40.
  • a vertical rotating shaft 11a which in cross-section has the shape of a rectangular frame of the boot fastener 11 which fastens from behind above and the sides of the ski boot. Between the portion of the boot fastener 11 facing the boot and the vertical rotating shaft 11a is provided an articulated connection with a vertical shaft 17. As can be gathered from FIGS. 1 and 3, the joints defining the vertical shaft 17 are arranged at the top and bottom.
  • boot fastener 11 is hollow and has on the inside an arresting surface 13 which cooperates with an arresting member 14 which is pretensioned in the direction of the arresting surface by a spiral spring 26 supported on housing 12.
  • An adjusting screw 30 permits the adjustment of the spring pretension and therefore the release forces.
  • the radial sections along 0 A to 0 E of arresting surface 13 are segments ofa circle with centres directed towards the boot.
  • the front edge 16 of arresting member 14 is also a segment of a circle but has a smaller radius ,of curvature than the radial sections of arresting surface 13.
  • arresting member I4 has two lateral projections 14a, 14b formed by the circular edge 16 terminating outside the contact surfaces 15.
  • FIGS. 1 and 3 lugs 20 and 20' fixed to the boot fastener are shown which cooperate with projections 19
  • a pedal is provided which is pivotable. about a transverse shaft 33.
  • the downward movement of-pedal 22 is limited in such a way that it can still be engaged by the lowered heel in order to start the closing movement of the binding'
  • FIG S. .2 .and 4 inside boot fastener 11 f lateral receiving spaces 23 are provided whichthe arresting member 14 can enter during a lateral release of the boot fastener 11 according to FIG. 4.
  • a spiral or leg spring 24 is provided between housing 12 and vertical rotating shaft 11a which when the arresting member314 is moved back by means of a hand lever 25 bringsabout the opening of boot fastener 11.
  • the slide 14 forming the arresting member can also be replaced by a pivoting shaft or the likewhich pivots about an articulation fitted to the underside of the housing.
  • FIG. 1 If e.g. as a result of a frontal fall a force ofpredetermined size is upwardly exertedon bootfastenerll according to FIG. 1, the latter moves upwards and the contact points or, areas of arresting member 14 on atresting surface 13 slide downwards along contact surfaces 15 on arresting surface 13.
  • This process is shown in different phases in FIGS. 5a to 5e.
  • the continual 1 downward convergence of contact surfaces 15due to a continual narrowing of the radial sections from the top to the bottom is not only shown in FIGS. 5a to Sc but also by means of the broken lines 15 in the vertical longitudinal sections.
  • the binding is closed simply by the skier pressing on pedal 22 with the heel, whereupon arresting member 14 passes beyond the peak 21 on arresting surface 13 so that the binding snaps shut.
  • the articulated arrangement of pedal 22 by means of shaft 33 makes it possible for boot fastener 11 to move downwards until it engages with the heel or sole in the area of the toes, and presses downwards against the ski or base plate.
  • the lateral release characteristic is determined by the following parameters which are freely selectable within the scope of the invention:
  • FIGS. 6 and 7 show an embodiment wherein additionally a boot fastener 11 divided in the centre of the binding in the longitudinal direction of the ski and a correspondingly divided arresting surface are provided.
  • a boot fastener 11 divided in the centre of the binding in the longitudinal direction of the ski and a correspondingly divided arresting surface are provided.
  • pedal 22 is linked with vertical rotating shaft 11a so that it no longer swings out.
  • each half is pivotable about its own vertical shaft.
  • a safety skibinding having a hollow boot fastener adapted to be swung upwardly out of a normal boot fastening position about a transverse shaft and laterally about a vertical shaft counter to arresting forces, an arresting surface provided on the inside on said boot fastener, an arresting member cooperable with said arresting surface, spring means biasing said member in the direction of the boot into engagement with said arresting surface, said arresting surface having a plurality of vertical arresting cams which rise to a vertical release point during a vertical movement relative to the arresting member and superimposed also a plurality of lateral arresting cams which rise to lateral release points during a lateral movement relative to the arresting member, the lateral arresting cams having centers of curvature located on the side of the arresting surface towards the boot, and said arresting member having two arresting projections movable into engagement with the arresting surface on both sides of a central longitudinal plane thereof when the boot fastener is in a central position.
  • a safety ski binding according to-claim 1 wherein the arresting member is curved between said two arresting projections, said member being curved in the same direction and greater than said lateral arresting cams.
  • a safety ski binding according to claim 2 wherein the width of said arresting surface increases downwards in a manner such that the spacing of the contact surfaces between the arresting member and the arresting surface decreases downwards.
  • a safety ski binding according to claim 1 including a housing, said boot fastener having a vertical rotating shaft which is attached to said housing in a manner so as to pivot about the transverse shaft and carries the front portion of the boot fastener pivotable about the vertical shaft, said vertical shaft being located between the transverse shaft and the arresting surface.
  • a safety ski binding according to claim 1, wherein the arresting surface comprises two surfaces substantially homologous to the central longitudinal plane.
  • a safety ski binding according to claim 1 including a housing having projections provided thereon, said boot fastener having lugs thereon cooperable with said housing projections with the binding closed in a manner such that lateral release is blocked within a predetermined upward pivoting range of the boot fastener.
  • a safety ski binding according to claim 1 wherein the vertical cams have a first portion along 7 which a substantially constant holding down force is exerted on the boot fastener, said first portion being followed by a second portion having a rising holding down force, and said second portion being followed by a peak where the holding down force disappears.
  • a safety ski binding according to claim 10 wherein following the peak the cams fall away whereby a force is exerted on the boot fastener in the opening direction.
  • a safety ski binding according to claim 1 including a lever for moving the arresting member away from the arresting surface counter to thebias of said spring 8 means, a housing, and a spring between the housing and the boot fastener biased in the opening direction. 13. A safety ski binding according to claim 1,
  • the front edge of the arresting member is 0 at the center of the binding in the longitudinal direction of the ski, whereby only the right-hand portion of;the boot fastener pivots to the right and the left-hand portion pivots to the left.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US493086A 1973-08-09 1974-07-30 Safety ski binding Expired - Lifetime US3920256A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2340419A DE2340419C3 (de) 1973-08-09 1973-08-09 Sicherheitsskibindung

Publications (1)

Publication Number Publication Date
US3920256A true US3920256A (en) 1975-11-18

Family

ID=5889342

Family Applications (1)

Application Number Title Priority Date Filing Date
US493086A Expired - Lifetime US3920256A (en) 1973-08-09 1974-07-30 Safety ski binding

Country Status (6)

Country Link
US (1) US3920256A (de)
JP (1) JPS576950B2 (de)
AT (1) AT332277B (de)
CH (1) CH587667A5 (de)
DE (1) DE2340419C3 (de)
FR (1) FR2240030B1 (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070034A (en) * 1975-04-25 1978-01-24 Swenson Glen R Adjustable release heel ski binding
US4170372A (en) * 1975-12-11 1979-10-09 S.A. des Etablissements Francois Salmon & Fils Devices mounted on a ski
US4226439A (en) * 1977-06-27 1980-10-07 Bernhard Kirsch Safety ski-bindings
US4411446A (en) * 1980-03-19 1983-10-25 Tmc Corporation Release binding
US4456281A (en) * 1981-08-20 1984-06-26 Tmc Corporation Heel holder
US4660849A (en) * 1984-01-02 1987-04-28 Marker International Company Toe piece for a safety ski-binding
US4815754A (en) * 1979-02-21 1989-03-28 Salomon S.A. Safety binding for ski
US4902031A (en) * 1987-10-12 1990-02-20 Geze Sport International Gmbh Toe unit of a safety ski binding
USRE33388E (en) * 1984-01-02 1990-10-16 Marker Deutschland Gmbh Toe piece for a safety ski-binding
US5316331A (en) * 1991-04-11 1994-05-31 Noridca S.P.A. Ski binding with device for compensating the calibration load for toe unit safety release
EP0985434A1 (de) * 1998-08-18 2000-03-15 HTM Sport- und Freizeitgeräte Aktiengesellschaft Skibindung mit Diagonalauslösung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT380402B (de) * 1983-12-21 1986-05-26 Amf Sport Freizeitgeraete Fersenhalter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3610650A (en) * 1968-07-02 1971-10-05 Eckel Fa H Ski boot holding clamp
US3649037A (en) * 1969-02-12 1972-03-14 Carpano & Pons Device for releasably attaching ski boots to skis
US3689095A (en) * 1969-07-14 1972-09-05 Georges P J Salomon Ski boot fixation device
US3778073A (en) * 1970-06-01 1973-12-11 Salomon Georges P J Ski binding

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3610650A (en) * 1968-07-02 1971-10-05 Eckel Fa H Ski boot holding clamp
US3649037A (en) * 1969-02-12 1972-03-14 Carpano & Pons Device for releasably attaching ski boots to skis
US3689095A (en) * 1969-07-14 1972-09-05 Georges P J Salomon Ski boot fixation device
US3778073A (en) * 1970-06-01 1973-12-11 Salomon Georges P J Ski binding

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070034A (en) * 1975-04-25 1978-01-24 Swenson Glen R Adjustable release heel ski binding
US4170372A (en) * 1975-12-11 1979-10-09 S.A. des Etablissements Francois Salmon & Fils Devices mounted on a ski
US4178014A (en) * 1975-12-11 1979-12-11 S.A. Des Etablissements Francois Salomon & Fils Binding with vertical pivot axes
US4226439A (en) * 1977-06-27 1980-10-07 Bernhard Kirsch Safety ski-bindings
US4911463A (en) * 1979-02-21 1990-03-27 Salomon S.A. Safety binding for ski
US4815754A (en) * 1979-02-21 1989-03-28 Salomon S.A. Safety binding for ski
US4411446A (en) * 1980-03-19 1983-10-25 Tmc Corporation Release binding
US4456281A (en) * 1981-08-20 1984-06-26 Tmc Corporation Heel holder
US4660849A (en) * 1984-01-02 1987-04-28 Marker International Company Toe piece for a safety ski-binding
USRE33388E (en) * 1984-01-02 1990-10-16 Marker Deutschland Gmbh Toe piece for a safety ski-binding
US4902031A (en) * 1987-10-12 1990-02-20 Geze Sport International Gmbh Toe unit of a safety ski binding
US5316331A (en) * 1991-04-11 1994-05-31 Noridca S.P.A. Ski binding with device for compensating the calibration load for toe unit safety release
EP0985434A1 (de) * 1998-08-18 2000-03-15 HTM Sport- und Freizeitgeräte Aktiengesellschaft Skibindung mit Diagonalauslösung

Also Published As

Publication number Publication date
JPS5071429A (de) 1975-06-13
JPS576950B2 (de) 1982-02-08
FR2240030A1 (de) 1975-03-07
DE2340419B2 (de) 1978-12-14
FR2240030B1 (de) 1982-04-23
CH587667A5 (de) 1977-05-13
DE2340419C3 (de) 1979-08-09
ATA645574A (de) 1975-12-15
DE2340419A1 (de) 1975-02-20
AT332277B (de) 1976-09-27

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