US3907313A - Safety fixing devices for skis - Google Patents

Safety fixing devices for skis Download PDF

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Publication number
US3907313A
US3907313A US413985A US41398573A US3907313A US 3907313 A US3907313 A US 3907313A US 413985 A US413985 A US 413985A US 41398573 A US41398573 A US 41398573A US 3907313 A US3907313 A US 3907313A
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US
United States
Prior art keywords
ski
boot
ramp
respect
profile
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
US413985A
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English (en)
Inventor
Georges Pierre Joseph Salomon
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.)
Salomon SAS
Original Assignee
Francois Salomon et Fils SA
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 Francois Salomon et Fils SA filed Critical Francois Salomon et Fils SA
Application granted granted Critical
Publication of US3907313A publication Critical patent/US3907313A/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
    • A63C9/086—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings using parts which are fixed on the shoe of the user and are releasable from the ski binding
    • 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
    • A63C9/0846—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
    • A63C9/08—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
    • A63C9/085—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08507—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 plurality of mobile jaws

Definitions

  • the bridge member including a portion movable between a first position in [52] U S Cl 280/1135 K which the moving portion of the bridge member is [51] A63C' 9/08 raised with respect to the ski, and a second low posi- Fieid E H 35 D tion in which the moving portion of the bridge mem- A I 35 her is locked with respect to the ski.
  • the second ramp i mounted on the ski being rigidly fixed to the moving [56] Refefences Cited portion of the bridge member, the binding device being characterized in that, for each possible point of UNlTED STATES PATENTS contact between the two ramps, the angle formed be- 3.
  • the present invention relates to safetybindingdevices for skis in which the boot is temporarily or permanently fixed to an added member intelnded to co operate with a corresponding retaining member fixed to the ski a
  • This type of bindingdevice hasacertain number of disadvantages due to its structure, especially when;putting on skis, in particularin the case where the added member is smaller in size than the soleand is thereby hidden from the skiers view, this member must -never theless be engaged. with maximum accuracy in theretention member fixed on the ski.
  • the present invention proposes vto improve the performance of thesebinding devices of the added member type, by providing a new structure-for the contact ing profiles of these members.
  • Devices of the added member type have already been proposed; in particular-they include aplate fixed temporarily under-the sole of ,theboot and .compriseon the one hand an elasticdevice coeoperatingawith one extremity of the plate andon the otherhand a fixed member in the form of a bridge-co-operating withithflv other extremity of the plate.
  • the profile -of..the plate is an inclined planewhich issupported against an. edge of the bridge member which has approximately the shape of a U in horizontal -cross-section.
  • the profile of the bridge member is constituted by one. ormore: frustoconical studs applied-against inclinedplanes of the bridge member-whichthas an arcuateform in horizontal cross-section. s. 5 i
  • the present invention propos'esto-provide a simple; economic and effective solution :for the problems referred to above.
  • the boot includes a first ramp formed either directly to the sole of the boot, or belonging to a memberfixed permanently ortemporarily. to the boot) intended to co-operate with.
  • a second ramp fixed on the moving portion of a bridge member mounted on the ski; the two ramps are respectively symmetricalin relation to the longitudinal axis'of the boot and in relation to the longitudinal axis ofthe ski.
  • the mobile portion of the bridge member is movable between two positions: t
  • the transition from the first to-the second position, by the-.action-of theboot, is effected against'the action of anelas tic memben
  • the bridge member may be of thetype described in the co-pending application of Aug. 21st 1973, Ser. No. 390,245 in the name of Georges, Pierre, Joseph, SALOMON.
  • the abovedevice is characterizedin that for each possible pointof contact between the two ramp, the angle formed by the tangent to the profile of the ramp fixed to the mobile portion ofthe bridge memberand a straight line perpendicular to the longitudinal axis of the ski is constantly greater than .the sum of .the friction angle at the point of contact of the two ramps and the angle formed by the longitudinal axes of the ski and the boot.
  • the plate fixed on the boot slides without force on the opposite surface of the bridge member and is engaged in this latter.
  • the skier easily overcomes the friction forces betweenthe bridge mem: her and, the plates, acting against the downward movement of the plate-moving portion assembly of the bridge.
  • the skier utilizes the weight of his body to overcome the friction forces.
  • the invention which combines a special ramp profile with a step-in bridge member comprisinga moving portion, thus provides an automatic and effortless centering action of the added plate.
  • the profile, of the ramp in a horizontal plane will advantageously be a broken line in the form of a V.for example, the point of which is located in the normal position, substantially on the axis of the ski. It will however be understood that it would be possible to adopt in the horizontal section a form other than the broken form, and especially a curved form.
  • the invention is not limited to the particular case which will be described below, the invention will be described as applied to the case of a binding device with a plate a'dded temporarily under the sole of the boot. It will be understood in fact, that the invention relating to the structure of the cooperating ramps, this structure could equally well be applied to the case in which one of the ramps is formed directly on the sole of the boot or belongs to a member permanently fixed on the sole.
  • FIG. 1 shows a general view in perspective of a binding device of the type with a member added under the sole of the boot;
  • FIG. 2 is a partial vertical section of a detail to a larger scale of FIG. 1, showing the co-operation of the bridge profiles of the plate;
  • FIG. 3 represents a perspective view showing the shape of the ramp and the plate of FIG. 2;
  • FIG. 4 is a view in partial horizontal cross-section of a detail of FIG. 1, to a larger scale, showing the diagram of forces.
  • FIG. 1 where has been shown at l a ski, on which there are fixed:
  • the front of the moving portion of the bridge member 3 has an inclined guiding ramp, indicated generally at 5 and having in the horizontal plane a V-shape 6 (FIG. 4).
  • a plate 8 is fixed temporarily under the sole of the boot 24, on which it is held:
  • the rear ramp formed on the plate 8 and intended to co-operate with the ramp 5 of the moving portion of the bridge member is essentially constituted by two surfaces II and 12 having a V-shape in horizontal section and converging towards the longitudinal axis XX of the plate (FIGS. 1 and 3)
  • the inter-section edge 14 of these two surfaces 11 and 12 is located in the vertical plane of symmetry.
  • FIG. 4 is a view in partial horizontal cross-section of the ramp systems 6 and ll, 12, fixed respectively on the moving portion of the bridge member 3 and the plate 8.
  • the axis Y-Y is the longitudinal axis of the ski
  • the axis XX is the longitudinal axis of the plate and also that of the boot.
  • C the angle 13 formed by these two longitudinal axes of symmetry.
  • the point M is the point of contact between the intersection edge 14 of the surfaces 11 and 12 and the ramp 6.
  • A the angle 15 formed by the tangent to the profile 6 at the point of contact M with a straight line 18 perpendicular to the longitudinal axis of the ski.
  • F designates the force applied by the skiers boot on the ramp 6. This force is directed along the axis XX of the boot.
  • the distance from the center of pivoting of the ski boot to the profile of the ramp on the boot is less than the distance from the center of pivoting to the point of the ramp on the bridge member located in the longitudinal axis of symmetry.
  • B the friction angle 16 at the point of contact M between edge 14 and the ramp 6; the angle of friction B is the arc of tangent is the coefficient of friction of the contacting ramps. It can be established very simply that this inequality between the forces T and T results in a condition of the angles A, C and B.
  • the component T of the force applied by the skier is greater than the component T of the friction force and the angle A is greater than the sum of the angles B and C: A B C.
  • the profile of the ramp fixed on the bridge member must be such that the angle formed by the tangent to the profile of the ramp mounted on the ski and a straight line perpendicular to the longitudinal axis of the ski is constantly greater than the sum of the angle of friction and the angle formed by the longitudinal axes of the ski and the boot.
  • the edge 14 slides all the better as the angle A is large. However, for other reasons and especially to facilitate the operation of the safety system, especially during a lateral fall, it is preferable to limit the angle A to values comprised between 10 and 35 and preferably in the vicinity of 30.
  • the profile of the ramp fixed on the bridge member must be such that the angle formed by the tangent to the profile of this ramp and a straight line perpendicular to the longitudinal axis of the ski is constantly greater than or equal to the angle formed by the longitudinal axes of the boot and of the ski.
  • angles formed by the longitudinal axis ofthe ski boot and the longitudinal axis of the ski and by the longitudinal axis of the ski boot and a line perpendicular to the longitudinal axis of the ski are complementary angles whose sum is equal to 90.
  • the angle formed by the tangent to the profile of the ramp on the bridge member and the longitudinal axis of the ski boot is the sum of the anglesformed by the line perpendicular to the longitudinal axis of the ski and the longitudinal axis of the ski boot and the tangent to the profile of the ramp on the bridge member and must be greater than a 90 angle and is greater by the angle of friction.
  • the value of the angle A can be limited to values in the vicinity of 30, while retaining the advantage of automatic centering arrangement of the added plate.
  • the invention thus makes it possible to construct binding devices which operate correctly with relatively small angles A (IS).
  • the result is that the ramps of the bridge member may extend practically over the entire width of the ski without having too large longitudinal dimensions on the ski.
  • the invention thus permits of ensuring a centering action from positions which are farther off-center than would be permitted by known binding devices. There is therefore an improvement in the convenience of use.
  • a safety binding device for skis a system for automatically positioning the boot of a skier with respect to the axis of the ski when the skier puts on his ski; the sole of the boot of the skier bearing a first ramp symmetrically shaped with respect to the longitudinal axis of the boot; said system being composed of a bridgemember mounted on the ski, said bridge member including:
  • a second ramp fixed on said movable portion said ramp being symmetrically shaped with respect to the longitudinal axis of the ski and adapted to cooperate with said first ramp for locking the boot with respect to the movable portion: the angle between the tangent to the profile of the second ramp and the axis of the first ramp of said ski boot exceeding degrees and the profile of the first ramp being at a distance from the center of pivoting of the ski boot less than the distance from said center of pivoting to the point of the first ramp located in the longitudinal axis of symmetry;
  • said portion being movable between two positions:
  • said movable portion being actuated from said first position to said second position by the skier with the sole of his boot when he puts on the ski.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US413985A 1972-11-13 1973-11-08 Safety fixing devices for skis Expired - Lifetime US3907313A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7240183A FR2206108B1 (xx) 1972-11-13 1972-11-13

Publications (1)

Publication Number Publication Date
US3907313A true US3907313A (en) 1975-09-23

Family

ID=9107068

Family Applications (1)

Application Number Title Priority Date Filing Date
US413985A Expired - Lifetime US3907313A (en) 1972-11-13 1973-11-08 Safety fixing devices for skis

Country Status (7)

Country Link
US (1) US3907313A (xx)
JP (1) JPS4994433A (xx)
AT (1) AT332769B (xx)
CH (1) CH581484A5 (xx)
DE (1) DE2355392A1 (xx)
FR (1) FR2206108B1 (xx)
IT (1) IT999301B (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098522A (en) * 1975-01-28 1978-07-04 Jean Joseph Alfred Beyl Safety ski binding

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3244431A (en) * 1961-05-08 1966-04-05 Smolka & Co Wiener Metall Ski binding
US3410568A (en) * 1966-06-06 1968-11-12 Philip K. Wiley Tension adjustable releasable ski binding
US3432179A (en) * 1965-06-03 1969-03-11 Hannes Marker Toe iron for safety ski-bindings
US3489424A (en) * 1966-10-20 1970-01-13 Ernst Gertsch Safety ski binding
US3672694A (en) * 1970-12-21 1972-06-27 Whittaker Corp Means and techniques for releasably securing ski boots to skis
US3741576A (en) * 1970-05-05 1973-06-26 Salomon Georges P J Ski bindings

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1500916A (fr) * 1966-07-25 1967-11-10 Salomon & Fils F Perfectionnement aux fixations pour skis

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3244431A (en) * 1961-05-08 1966-04-05 Smolka & Co Wiener Metall Ski binding
US3432179A (en) * 1965-06-03 1969-03-11 Hannes Marker Toe iron for safety ski-bindings
US3410568A (en) * 1966-06-06 1968-11-12 Philip K. Wiley Tension adjustable releasable ski binding
US3489424A (en) * 1966-10-20 1970-01-13 Ernst Gertsch Safety ski binding
US3741576A (en) * 1970-05-05 1973-06-26 Salomon Georges P J Ski bindings
US3672694A (en) * 1970-12-21 1972-06-27 Whittaker Corp Means and techniques for releasably securing ski boots to skis

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098522A (en) * 1975-01-28 1978-07-04 Jean Joseph Alfred Beyl Safety ski binding

Also Published As

Publication number Publication date
DE2355392A1 (de) 1974-05-22
CH581484A5 (xx) 1976-11-15
FR2206108A1 (xx) 1974-06-07
IT999301B (it) 1976-02-20
JPS4994433A (xx) 1974-09-07
FR2206108B1 (xx) 1976-08-20
ATA953973A (de) 1975-06-15
AT332769B (de) 1976-10-11

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