US3544123A - Anti-friction device for ski boots and skis - Google Patents

Anti-friction device for ski boots and skis Download PDF

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Publication number
US3544123A
US3544123A US717214A US3544123DA US3544123A US 3544123 A US3544123 A US 3544123A US 717214 A US717214 A US 717214A US 3544123D A US3544123D A US 3544123DA US 3544123 A US3544123 A US 3544123A
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United States
Prior art keywords
plate
ski
boot
friction
cover plate
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Expired - Lifetime
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US717214A
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English (en)
Inventor
Frank D Werner
Paul S Petersen
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.)
SPORTS Tech
Sports Technology Inc
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SPORTS Tech
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Publication date
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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
    • A63C9/001—Anti-friction devices
    • 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
    • A63C9/084—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
    • A63C9/085—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
    • A63C9/0805—Adjustment of the toe or heel holders; Indicators therefor

Definitions

  • the present invention relates to friction control devices for reducing the effective friction between two surfaces, in particular for controlling the friction between the top of a ski and the sole of a boot held in bindings on the ski.
  • U. S. Pat. No. 3,079,163 shows a safety binding including a movable plate on the top of the ski which is used in an attempt to reduce friction.
  • This device is not adaptable to general use with other bindings. Further, the mounting and construtcion of the device makes it susceptible to foreign material or ice. The unit does not embody features that minimize friction in all situations, nor does it provide for automatic re-set.
  • the present invention relates to an anti-friction device which reduces the coefficient of friction between two devices which are subjected to changing loads and which must release laterally with respect to each other within acceptable variations from a preset load regardless of the forces applied between the two members.
  • the primary usage is for positive releasing of a ski boot from lateral release ski bindings.
  • the unit is not adversely affected by load on the boot or foreign materials.
  • FIG. 1 is a side elevational view of the boot shown in place in a typical safety release binding
  • FIG. 2 is a top plan view taken as on line 2-2 in FIG. 1;
  • FIG. 3 is an exploded view of the device made accord ing to the present invention to show the interior details detail.
  • FIG. 4 is a fragmentary enlarged side elevational view of the forward portion of the anti-friction device made according to the present invention with parts in section and parts broken away;
  • FIG. 5 is a fragmentary bottom plan View of the device of the present invention showing the unit when it is in its released position in a first direction;
  • FIG. 6 is a fragmentary bottom view showing the device in its released positionof FIG. 5, with the bottom plate removed to show the positioning of the center member;
  • FIG. 7 is a fragmentary bottom view of the device taken with the bottom plate of the unit removed to show the position of the internal members carrier in its normal centered position.
  • a ski boot 10 is fastened to a lateral release toe piece 11 and a life release heel binding 12, both mounted onto a ski 13 and holding the ski boot firmly in place on the ski.
  • the binding toe piece 11 is made so that it can be adjusted in the amount of lateral release force which is necessary for it to release the boot, and it will pivot with respect to its mounting plate to release laterally as shown in dotted lines in FIG. 2.
  • the amount of force necessary for the lateral release varies and can be set with an adjusting screw 14 in the usual manner.
  • Many different toe pieces of this general configuration are available commercially and are in wide use.
  • the heel on each binding 12 generally is a vertical release so that when the heel is lifted under sufficient force as in a forward fall, the heel will release, and when the leg is twisted, theoretically the toe piece is released. This Will free the skiers leg from the ski.
  • the heel binding is also a commercially available unit of usual or preferred design.
  • an anti-friction or friction control device generally designated 20 is placed between the toe portion of the boot and the top of the ski.
  • the friction control device comprises a base plate 21 which
  • the base plate comprises a flat plate-like member of hardened steel, preferably stainless steel, which is triangular shaped as shown.
  • the plate is hard enough to prevent roller indentation.
  • the leading edge area of the base plate 21 includes a guide lip 23 which is integral with the base portion, and is otfset therefrom through the use of a transition section 24 which extends upwardly from the base plate itself to the guide lip.
  • the guide lip extends forwardly slightly from the main part of the base plate and there is an opening 25 provided through the transition section. This opening is centrally located on the transition section and is made so that it will permit a hairpin type spring 27 to pass therethrough, as shown in FIG. 3.
  • the hairpin spring 27 has a closed end 28, and a pair of legs 29, 29 which extend through the opening 25.
  • the legs 29, 29 are flattened at their outer ends, as shown, and have upwardly extending prongs or ears 32, 32.
  • the ears as perhaps best seen in FIG. 4, extend upwardly from the legs themselves and when the spring is in place, the ears extend upwardly above the top of the lip 23.
  • a roller cage and bearing member 33 is provided to be positioned on top of the base plate 21.
  • the roller cage 33 comprises a member having flat plate-like sections 34 adjacent the outer sides thereof and a center raised section 35.
  • the center raised section forms a pocket (shown in FIG. 7) into which the hairpin spring 27 is fitted.
  • the pocket has openings 36 along the edges thereof in the area where the closed end or rounded end of the hairpin spring rides.
  • the closed end of the hairpin spring can be retained in place with a suitable small fastening lug 37 if desired. This will retain the hairpin spring from exaggerated sideways movement during actuation.
  • the bearing case 33 also is used to form a plurality of roller pockets.
  • There are two forward pockets 40, 40 which are formed so that the axes of rollers 41 therein will intersect the centerline of a pivot or mounting hole 42 at the rear portions of the bearing cage.
  • a third bearing pocket 43 is formed in the raised member 35 just to the rear of the spring pocket and a roller 41 also fits inside this pocket 43. The axis of the roller in pocket 43 also intersects the pivot point at the pivot opening 42.
  • the bearing cage is made of a low friction material which has high strength, such as nylon, and the rollers .41 are of size so that they will protrude just above and below the edges of the surfaces defining the pockets 40 and 43.
  • the rollers 41 ride against the top surface of the base plate 21 and the bottom surface of a cover plate 45 rides on top of the rollers.
  • the cover plate 45 has a top member which is provided with two stifiening indentations 46, 46 and has turned down flanges 47 along the longitudinal edges of the plate.
  • the flanges 47 are of size so that when the unit is assembled as shown in FIG. 4 the flange closely clears the top of the base plate 21.
  • the cover plate has a turned over guide member 48 which forms a U-shape in cross section as shown in FIG. 4 and is made to fit below and retain the lip 23.
  • the guide member 48 does not extend all the way out to the peripheral edges of plate 45, for ease of manufacture, but does go substantially to each of the sides of the cover plate.
  • the lip 23 fits inside the U-shape of the guide member and extends above the lower edges of flanges 47 as shown.
  • the guide member 48 is provided with an opening 51 on the bottom side thereof.
  • This opening is positioned to align with the upright ears 32, 32 of the spring, and is of size so that the spring ears fit inside the opening when it is under slight compression.
  • the opening 51 is forwardly of the outer edge of the lip 23 and the ears also clear the outer edge of this lip.
  • the spring legs 29, 29 extend through the opening 25 in the transition section 24 of the lip 23 so that the prongs extend into the opening 51.
  • the unit is retained in assembled position with a rivet 52 that is shouldered.
  • the rivet is fastened to hold the bottom plate, the roller cage, and the top cover 45 together for relative movement about a single pivotal axis adjacent the rear of the unit.
  • the bearing cage opening 42 has a cone shaped surface 53
  • the cover plate also has a pivot opening 54 having an interior cone shaped surface 55.
  • the rivet holds the bottom surface of the cover plate in contact with a boss 59 on the roller cage surrounding opening '42 so that there is a bearing surface for relative movement between the two parts, namely the bearing cage and the cover plate.
  • the bearing cage is of low friction material so the pivot moves easily.
  • the bearing cage also bears on the bottom plate 21 to carry load at the rear portions of the unit from the cover to the bottom plate.
  • the base plate When the unit is used, the base plate is fastened to the ski in a suitable manner such as with adhesive material 22 or with screws as desired.
  • the rivet will hold the pivoting plates 45, 33 and 21 together for pivoting about its central rear axis.
  • the guide member 48 At the forward edge, the guide member 48 will hold the cover plate and the base plate from separating because the guide member 48 will engage the underside of the lip 23.
  • the unit is placed substantially under the ball of the foot or slightly forwardly therefrom so that the three rollers are in position to carry most of the weight of the foot from the ski boot when the skier leans forwardly. Because the unit has some thickness, a small block can be placed under the heel portion of the boot to keep the boot level.
  • the anti-friction device When the foot is to be released, the anti-friction device will do it under rolling friction.
  • the movement of the top plate, which will move with the boot, relative to the bottom plate which stays with the ski is supported by free rollers.
  • one flange 47 will engage an edge portion 61 of the transition section 24 on the base plate, and this will act as a stop to prevent the cover plate from pivoting too far.
  • the transition portion 24 and the flange 47 on the opposite side of the cover plate will act as stops to limit movement of the cover plate in the opposite direction.
  • the bearing cage moves substantially half the angular distance of the cover plate.
  • the bearing cage shifts slightly, and the compression of the spring takes place largely between one end surface of the opening 25 and one end surface of opening 51.
  • the unit in order to install the forward screws in the bottom plate tothe ski, the unit merely has to be moved so that the cover plate is in its full sideways position, and the screw holes at the forward end of the base plate 21 will be uncovered and thus the screws can be installed.
  • the cover plate movement is sufficient to permit this installation as shown in FIG. 1.
  • the spring 27 also acts not only to center the cover plate with respect to the base plate, but also to center the roller cage each time. Because the basic action on the spring takes place between the edges of the opening 25 and the edges of the opening 51, the rear portions of the spring react against the lugs 62 to center the roller cage each time its returned to center. Sometimes, if the rollers slide rather than roll the cage could become misplaced and then the unit would not operate as well. However, this centering action of the spring acts to keep the roller cage centered after each time it has been pivoted as well as recentering the cover plate with respect to the base plate.
  • the ears or prongs 32 on the spring 27 are constrained in opening '51 so they prevent the spring from slipping out of place. The ears are made long enough to insure this.
  • the turned down flanges 47 act as stitfeners for the cover plate, as well, and also acts as a scraper for ice and foreign material to make sure that when the cover plate pivots it will scrape away any ice that might have built up along the edges of the base plate or on the ski, and keep this foreign material out of the way of the rollers. It can be seen that the clearance between the edges 47 and the base plate 21 is quite small and this will insure that no foreign material gets into the roller cage to adversely affect operation.
  • a friction control unit positioned between an upper surface of a ski and a lower surface of the sole of a ski boot, wherein lateral release binding means for releasably securing the boot to the ski are provided, comprising an assembly of a first plate, a center bearing cage member, and a second cover plate pivotally mounted together about a common axis adjacent the rear of the assembly, means to mount said first plate to the top surface of said ski with said common axis substantially perpendicular to the upper surface of said ski and substantially centered transversely on the ski, the forward portions of said assembly lying under a ski boot fastened in the binding means adjacent the front of the boot and roller means, said bearing cage member having pockets defined therethrough, said roller means being positioned within said pockets in said center bearing cage member for transferring force from said cover plate to said first plate in the forward portions of said assembly.
  • said rolling means comprise substantially cylindricalrollers having rolling axes intersecting the common axis of said assembly.
  • center bearing cage for retaining said rollers includes low friction means for transferring force from said second plate to said first plate in the area adjacent to the pivot between said second plate and said first plate.
  • a friction reducing unit for mounting between a first surface comprising the upper surface of a ski and a second surface, said ski having a longitudinal direction, comprising a first plate member adapted to be attached to said first surface, a second plate member substantially parallel to said first plate member, means pivotally mounting said first and second plate members together about a pivot axis at substantially right angles to said longitudinal direction so that portions of said second plate member will move transversely relative to said first plate member, said second plate member being adapted to support said second surface, rolling members positioned between said first and said second plate members and effec tive to transfer force from said second plate member to said first plate member and to roll when said second plate member moves relative to said first plate member, said rolling members being positioned spaced from said pivotal axis in said longitudinal direction, and bearing cage means for retaining said rolling members in a predetermined orientation for rolling motion between said first and said second plate members, said bearing cage means being positioned between said first and second plate members and having low friction means thereon for transferring force from said second plate member to said first plate member
  • a friction reducing unit for mounting between a first surface comprising the upper surface of a ski and a second surface, said ski having a longitudinal direction, comprising a first plate member adapted to be attached to said first surface, a second plate member substantially parallel to said first plate member, means pivotally mounting said first and second plate members together about a pivot axis at substantially right angles to said longitudinal direction so that portions of said second plate member will move transversely relative to said first plate member, said second plate member being adapted to support said second surface, rolling members positioned between said first and said second plate members and effective to transfer force from said second plate member to said first plate member and to roll when said second plate member moves relative to said first plate member, said rolling members being positioned spaced from said pivotal axis in said longitudinal direction, and said second plate member comprising a cover member having a flange extending along the longitudinal edges thereof, said flange being of dimension to very closely clear the upper surface of said first plate member when said second plate member pivots relative to said first plate member.
  • a device for controlling friction load between a ski boot and the top of a ski, said ski boot being retained on said ski with lateral release bindings comprising an assembly of two spaced apart substantially parallel plates, means pivotally mounting said plates with respect to each other for limited pivotal movement about a pivotal axis adjacent one end thereof, a plurality of rolling members between said plates, and supporting said plates directly, means for constraining said rolling members for rolling contact with both of said plates in a predetermined path as said plates pivot with respect to each other, and means to mount said assembly in position on said ski with said plates and the rolling members substantially under the ball of a foot of a skier wearing said ski boot, and with the pivot axis positioned rearwardly of the ball of said 7 foot.
  • rolling members comprise substantially cylindrical rollers having axes extending generally in longitudinal direction of the ski.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US717214A 1968-03-29 1968-03-29 Anti-friction device for ski boots and skis Expired - Lifetime US3544123A (en)

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US71721468A 1968-03-29 1968-03-29

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US (1) US3544123A (enrdf_load_stackoverflow)
AT (1) AT317054B (enrdf_load_stackoverflow)
CH (1) CH490871A (enrdf_load_stackoverflow)
DE (1) DE1914546A1 (enrdf_load_stackoverflow)
FR (1) FR2005094A1 (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3799563A (en) * 1970-08-28 1974-03-26 Gertsch Ag Sole support apparatus
US3819200A (en) * 1971-06-23 1974-06-25 Gertsch Ag Sole support device
US3950000A (en) * 1972-12-01 1976-04-13 Vereinigte Baubeschlagfabriken Gretsch And Co. Gmbh Device in ski bindings with pivotal sole support
US4163569A (en) * 1975-09-23 1979-08-07 Tmc Corporation Ski brake
US4869525A (en) * 1986-08-05 1989-09-26 Salomon S.A. Anti-friction plate which automatically recenters for safety binding
US5040822A (en) * 1988-02-11 1991-08-20 Salomon S.A. Safety binding for an alpine ski
US5114174A (en) * 1990-03-17 1992-05-19 Geze Sport International Gmbh Bearing arrangement for the laterally movable vertical support of a ski boot on a ski
DE4400373A1 (de) * 1994-01-11 1995-07-13 Hubert Boesch Sohlenbindung für Sportgeräte
US5511816A (en) * 1994-01-12 1996-04-30 Marker Deutschland Gmbh Base plate and movable anti-friction device of a ski binding

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2521017B1 (fr) * 1982-02-08 1985-11-08 Petzl Ets Fixation de ski a declenchement lateral perfectionne
FR2602687B1 (fr) * 1986-08-05 1988-11-10 Salomon Sa Plaque antifriction libre a recentrage automatique pour fixation de securite
FR2609900B1 (fr) * 1987-01-28 1989-05-05 Salomon Sa Plaque antifriction libre a coulisseau de recentrage automatique pour fixation de securite
FR2663856B1 (fr) * 1990-06-27 1993-01-08 Salomon Sa Dispositif d'appui d'une chaussure de ski sur un ski.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676813A (en) * 1949-06-13 1954-04-27 Beyl Jean Joseph Alfred Safety ski fastening
US2745672A (en) * 1951-10-22 1956-05-15 Jr Robert C Meier Automatically releasable ski binding
US2846232A (en) * 1954-03-12 1958-08-05 Reinhold Voster Safety device for securing a shoe upon a ski
US3079163A (en) * 1958-07-26 1963-02-26 Beausacq Alfred Raymond De Safety securing means for skis
FR1358624A (fr) * 1963-03-07 1964-04-17 Salomon & Fils F Perfectionnements aux organes de retenue des fixations arrière de sécurité pour skis
CH431349A (de) * 1964-12-24 1967-02-28 Ver Baubeschlag Gretsch Co Sicherheitsskibindung mit beweglicher Standplatte

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676813A (en) * 1949-06-13 1954-04-27 Beyl Jean Joseph Alfred Safety ski fastening
US2745672A (en) * 1951-10-22 1956-05-15 Jr Robert C Meier Automatically releasable ski binding
US2846232A (en) * 1954-03-12 1958-08-05 Reinhold Voster Safety device for securing a shoe upon a ski
US3079163A (en) * 1958-07-26 1963-02-26 Beausacq Alfred Raymond De Safety securing means for skis
FR1358624A (fr) * 1963-03-07 1964-04-17 Salomon & Fils F Perfectionnements aux organes de retenue des fixations arrière de sécurité pour skis
CH431349A (de) * 1964-12-24 1967-02-28 Ver Baubeschlag Gretsch Co Sicherheitsskibindung mit beweglicher Standplatte

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3799563A (en) * 1970-08-28 1974-03-26 Gertsch Ag Sole support apparatus
US3819200A (en) * 1971-06-23 1974-06-25 Gertsch Ag Sole support device
US3950000A (en) * 1972-12-01 1976-04-13 Vereinigte Baubeschlagfabriken Gretsch And Co. Gmbh Device in ski bindings with pivotal sole support
US4163569A (en) * 1975-09-23 1979-08-07 Tmc Corporation Ski brake
US4869525A (en) * 1986-08-05 1989-09-26 Salomon S.A. Anti-friction plate which automatically recenters for safety binding
US5040822A (en) * 1988-02-11 1991-08-20 Salomon S.A. Safety binding for an alpine ski
US5114174A (en) * 1990-03-17 1992-05-19 Geze Sport International Gmbh Bearing arrangement for the laterally movable vertical support of a ski boot on a ski
DE4400373A1 (de) * 1994-01-11 1995-07-13 Hubert Boesch Sohlenbindung für Sportgeräte
US5511816A (en) * 1994-01-12 1996-04-30 Marker Deutschland Gmbh Base plate and movable anti-friction device of a ski binding

Also Published As

Publication number Publication date
FR2005094A1 (enrdf_load_stackoverflow) 1969-12-05
DE1914546A1 (de) 1969-10-30
AT317054B (de) 1974-08-12
CH490871A (fr) 1970-05-31

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