US3785664A - Heel supporting device of a ski safety binding - Google Patents

Heel supporting device of a ski safety binding Download PDF

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Publication number
US3785664A
US3785664A US00217556A US3785664DA US3785664A US 3785664 A US3785664 A US 3785664A US 00217556 A US00217556 A US 00217556A US 3785664D A US3785664D A US 3785664DA US 3785664 A US3785664 A US 3785664A
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United States
Prior art keywords
heel
depressor
ski
spring
bracing
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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
US00217556A
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English (en)
Inventor
B 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
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Filing date
Publication date
Priority claimed from DE19712101973 external-priority patent/DE2101973C3/de
Application filed by Vereinigte Baubeschlag - Fabriken Gretsch and Co GmbH filed Critical Vereinigte Baubeschlag - Fabriken Gretsch and Co GmbH
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Publication of US3785664A publication Critical patent/US3785664A/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
    • A63C9/084—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
    • A63C9/0841—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
    • A63C9/005—Ski bindings with means for adjusting the position of a shoe holder or of the complete binding relative to the ski
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00—Ski bindings
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/084—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

  • the present invention relates to a heel supporting device of a ski safety binding of the type as disclosed in my previous U.S. Pat. No. 3,529,846, which device comprises a heel depressing element, hereafter called the heel depressor, which normally presses the heel under the action of a heel depressing spring upon the ski, but releases the heel when such a strong force acts in the upward direction upon the heel that the spring pressure of the heel depressing spring will be overcome.
  • the heel depressor normally presses the heel under the action of a heel depressing spring upon the ski, but releases the heel when such a strong force acts in the upward direction upon the heel that the spring pressure of the heel depressing spring will be overcome.
  • An important feature of the invention therefore consists in providing additional spring means which have a limited stroke and preferably a resilience lower than that of the heel depressing spring and are interposed between the heel or the heel depressor and the ski in a manner so as to permit a limited resilient upward movement of the heel without causing the heel to be released.
  • a heel supporting device of a design as described above which is of a very simple construction and the new parts of which may be easily combined and assembled with the parts of a heel supporting device as disclosed by the aforementioned patent.
  • Another feature 'of the invention therefore consists in providing such a heel supporting device with additional spring means in the form of a bow-shaped spring bracket which, insofar as the direction of its force is concerned, is interposed between the ski and the heel depressor.
  • the additional spring means are preferably connected between the first toggle arm and the ski.
  • the additional spring means For limiting the stroke of the additional spring means, for permitting these means to be made of a relatively low-resilient strength, and for preventing them from impairing the required stability of the heel supporting device, it is another feature of the invention to design these additional spring means so that at the end of their stroke their effective force will be still lower than the force which is required for compressing the heel depressing spring to an extent that it will cause the heel depressor to start its releasing move ment. According to a preferred embodiment of the invention, this is attained by connecting the additional spring means in parallel with a rigid element, for example, an arm, which is interposed with a certain amount of play between the ski and the heel or the toggle-lever mechanism.
  • a rigid element for example, an arm
  • the stroke of the additional spring means may be limited by providing a part of one of the joints of the interposed arm with a longitudinal slot.
  • the rigid element or arm preferably also forms a bracing member for bracing the lever mechanism and for taking up the reaction forces which occur especially when the binding is being released.
  • the additional spring means are preferably provided with an initial tension when they are in their inactive position and that is, when the heel rests on the ski. Therefore, these means will only be actuated when the force which acts in the upward direction upon the heel exceeds a certain minimum value.
  • the invention further provides these spring means to consist of a pair of spring elements, preferably in the form of bow-shaped spring brackets, which are mounted in corresponding positions at both sides of the heel depressor.
  • FIG. 1 shows a diagrammatic side view of the heel supporting device according to the invention
  • FIG. 2 shows a spring diagram of the device
  • FIG. 3 is a longitudinal section which is taken along the line 3 3 in FIG. 4 of an actual embodiment of the dvice as shown in FIG. 1;
  • FIG. 4 is a cross section which is taken along the line 4 4 in FIG. 3, but only shows one half of the device at one side of the central vertical plane m m and omits some of the internal parts of the device; while FIG. 5 is a top view of the device as shown in FIG. 3, from which the upper covering wall is cut away and omitted and in which like in FIG. 4 only one half of the device is shown and some of its parts are omitted.
  • a pair of pivot pins 12 and 13 which extend parallel to the upper surface of the ski l0 and transversely to the ski are rigidly secured to the ski, for example, by being mounted on a base plate 11 which, in turn, is secured to the ski.
  • a heel depressor 15 is provided with a longitudinal slot 14 into which the pivot pin 12 engages.
  • the heel depressor 15 is pivotable upwardly about the horizontal axis of pin 12 in the direction of the arrow x.
  • a tension spring 16 draws the heel depressor l5 forwardly and against the heel 17 of a ski boot which is only indicated in dot-and-dash lines.
  • a supporting or bracing device for the heel depressor 15 may consist, for example in accordance with the patent previously referred to, of two bracing arms 18 and 19 which are pivotably connected to each other at their upper ends and together form a unit of an inverted V-shape the apex of which is formed by the joint 20 between these arms.
  • a toggle-lever mechanism consisting of the two toggle arms 21 and 22 is dis posed between and connected to the joint 20 and the heel depressor 15.
  • Arm 22 one end of which is pivotably connected to the arm 21 by a joint 23 is pivotably connected at its other end by a joint 24 to the heel depressor 15 which is provided on its upper front end with a heel-depressing element 25 which is adapted to engage upon the upper side of the heel l7 and is preferably adjustable to different heights relative to the heel depressor 15, while on its lower front end the heel depressor is provided with a projection 26 on which the heel 17 rests when the ski boot is held in the binding and rests on the ski.
  • a heel-depressing compression spring 27 the tension of which is preferably adjustable acts with its rear end by means of a bearing member 28 upon the heel depressor 15 in a position in which it has the tendency to open or release the heel depressor 15 from the heel, while its front end acts by means of a bearing member 29 upon the toggle-lever mechanism, for example, upon the toggle arm 21 or the joint 23 and thus tends to push the joint 23 forwardly toward a stop 30 with the tendency to close the heel depressor 15 and to press it toward the ski.
  • the closing tendency is, however, greater than the opening tendency.
  • a releasing lever 31 for arbitrarily releasing the heel depressor 15 is pivotably mounted, for example, on the pivot pin 12 and has an arm 32 which by means of a pin 33 engages with a certain amount of play with a draw rod 34 which serves as a releasing rod and engages with the toggle-lever mechanism, for example, on the joint 23.
  • an additional spring in the form of a resilient bow-shaped bracket 35 is provided between the ski and the heel depressor and thus between the ski and the heel insofar as the transmission of force is concerned.
  • the ends of this spring bracket 35 are connected to the pivot pin of the two bracing arms 18 and 19 and to the pivot pin 13 which by means of base plate 11 is rigidly secured to the ski.
  • the lower end of the bracing arm 19 is provided with a longitudinal slot 36 through which it is connected with a certain amount of play to the pin 13.
  • the spring element 35 may spring back and forth to the extent as limited by the upper and lower ends of the longitudinal slot 36.
  • FIG. 2 shows an example of a suitable spring diagram of the heel depressor in which the upwardly directed spring force P and its dependence upon the spring stroke s is plotted, while f designates the spring characteristics of the spring element 35 which is preferably mounted between the joints formed by the pivot pins 13 and 20 so as to be under an initial tension and tending to press these two joints toward each other so that the upper end ofthe longitudinal slot 36 of the bracing arm 19 engages with an initial pressure upon the pivot pin 13.
  • this normal position of the spring element 35 is indicated, for example, by the point A in which this element has an initial tension P, with which it presses the heel depressor against the heel.
  • the heel may move upwardly by carrying out a stroke s, which is in accordance with the section A-B of the spring diagram.
  • the bow-shaped spring element 35 is thereby expanded since the slotted part 36 of the arm 19 will then slide in a substantially vertical direction on the pivot pin 13 and cause the tension of the spring element 35 to increase from the value P to the value P
  • This value P is, however, still lower than the value of the force with which the heel depressor or the heel is pressed at this time by spring 27 against the ski.
  • FIGS. 3 to 5 which illustrate a reduction of the invention to actual practice, those parts which are similar to the parts as shown in FIG. 1 are also designated by the same reference numerals.
  • the base plate 11 is in this case composed of two angular or trough-shaped plates 11a and 11b, respectively, which are screwed or welded together.
  • the inner trough-shaped plate 11b carries the transverse pivot pins 12 and 13.
  • FIGS. 4 and 5 each of which shows a cross section of one half of the heel suppressing device according to FIG. 3, the individual elements, especially the spring element 35 and the bracing arm 19 which limits the stroke of this spring element, are provided in pairs symmetrically at both sides of the central vertical plane m m of the device.
  • the spring action and stroke of both spring elements 35 will thus be very uniform.
  • the device is only provided with a single draw spring 16 and a single heel depressing spring 27. Both of these elements although not shown in FIGS. 4 and 5 are located within the central vertical plane m m, while in FIG. 3 the draw spring 16 is only indicated by a dotand-dash line forming its longitudinal axis.
  • any other suitable means may be provided which will produce the same effect.
  • a heel supporting device of a ski binding for clamping a boot upon a ski comprising mounting means to be secured to a ski, a heel depressor having means normally acting upon the heel of the boot for depressing the same upon the ski, means for movably connecting said heel depressor to said mounting means, spring means for resiliently pressing said heel depressor upon said ski, transmitting means for transmitting the spring force of said spring means to said heel depressor, means operatively connected to said transmitting means for permitting said heel depressor to be lifted against the action of said spring means upon the application of an excessive force in the upward direction upon said heel depressor until the heel of the boot is released therefrom, an additional spring means interposed in the direction of force between said ski and said heel depressor, and means for limiting the resilient stroke of said additional spring means so as to permit the heel to move upwardly from the ski for a limited distance without causing the heel to be released from said heel depressor, and means for supporting one end of said additional spring means on said mounting means and the other end on said transmit
  • a heel supporting device as defined in claim 1 further comprising a bracing unit including a first bracing lever, a second bracing lever, and means for pivotably connecting said two bracing levers to each other and also for pivotably connecting said two levers to said mounting means so that said mounting means and said two bracing levers together form a substantially triangular bracing unit, means for supporting said transmitting means on said bracing unit, said additional spring means consisting of at least one substantially C-shaped spring bracket in parallel connection within said bracing unit to one of said bracing levers, means for permitting a predetermined play at said last-mentioned bracing lever relative to said stroke limiting means, whereby said last-mentioned lever can carry out a stroke in accordance with said play and said additional spring means can carry out a corresponding resilient stroke.
  • a bracing unit including a first bracing lever, a second bracing lever, and means for pivotably connecting said two bracing levers to each other and also for pivotably connecting said two
  • a heel supporting device as defined in claim I further comprising a bracing unit for bracing said transmitting means, said bracing unit including an intermediate member forming a first bracing lever, a second bracing lever, means for pivotably connecting said two bracing levers to each other, separate means for pivotably connecting the free ends of each of said bracing levers to said mounting means, said two bracing levers and said mounting means forming a substantially triangular bracing unit, said means for pivotably connecting a first of said bracing levers additionally serving as a means for pivotably connecting one end of said additional spring means to said mounting means and the other end to said second bracing lever, means for permitting a limited play at one of said connecting means for one of said bracing levers, said limited play being determined by said stroke limiting means, said play permitting a limited stroke of said first bracing lever and a corresponding resilient stroke of said additional spring means.
  • a heel supporting device of a ski binding for clamping a boot upon a ski comprising mounting means to be secured to a ski, a heel depressor having means normally acting upon the heel of the boot for depressing the same upon the ski, means for movably connecting said heel depressor to said mounting means, spring means for resiliently pressing said heel depressor upon said ski, transmitting means for transmitting the spring force of said spring means to said heel depressor, means operatively connected to said transmitting means for permitting said heel depressor to be lifted against the action of said spring means upon the application of an excessive force in the upward direction upon said heel depressor until the heel of the boot is released therefrom, an additional spring means consisting of at least one substantially C-shaped spring bracket interposed in the direction of force between said ski and said heel depressor, and means for limiting the resilient stroke of said additional spring means so as to permit the heel to move upwardly from the ski for a limited distance without causing the heel to be released from said heel depressor.
  • a heel supporting device of a ski binding for clamping a boot upon a ski comprising mounting means to be secured to a ski, a heel depressor having means normally acting upon the heel of the boot for depressing the same upon the ski, means for movably connecting said heel depressor to said mounting means, spring means for resiliently pressing said heel depressor upon said ski, transmitting means for transmitting the spring force of said spring means to said heel depressor, means operatively connected to said transmitting means for permitting said heel depressor to be lifted against the action of said spring means upon the application of an excessive force in the upward direction upon said heel depressor until the heel of the boot is released therefrom, an additional spring means interposed in the direction of force between said ski and said heel depressor, and means for limiting the resilient stroke of said additional spring means so as to permit the heel to move upwardly from the ski for a limited distance without causing the heel to be released from said heel depressor, said means for movably connecting said heel depressor includes pivot means having a pivot axis extending
  • said bracing means for pivotably mounting said lever further include a bracing unit supported on the ski, a further lever, connecting means for pivotably connecting one end of said further lever to said bracing unit and its other end to said first lever, said two levers forming a toggle-lever mechanism, said spring means biasing said two levers into a position of straight alignment
  • said additional spring means includes at least one spring element, connecting means for connecting one end of said spring element to the ski and the other end to said bracing unit at least adjacent to said connecting means, one of said connecting means carrying said stroke limiting means and permitting a certain play at one end of said spring element.
  • a heel supporting device of a ski binding for clamping a boot upon a ski comprising mounting means to be secured to a ski, a heel depressor having means normally acting upon the heel of the boot for depressing the same upon the ski, means for movably connecting said heel depressor to said mounting means, heel depressing means for resiliently pressing said heel depressor upon said ski, transmitting means for transmitting the spring force of said spring means to said heel depressor in such a manner that, if an excessive force acts in the upward direction upon the heel depressor, said heel depressor will be lifted against the action of said spring means until said heel is released from said heel depressor, additional spring means interposed in the direction of force between said ski and said heel depressor, means for limiting the resilient stroke of said additional spring means so as to permit the heel to move upwardly from the ski for a limited distance without causing the heel to be released from said heel depressor, and a bracing means for bracing said transmitting means, said bracing means comprising an intermediate member, means
  • said additional spring means consist of at least one substantially C-shaped spring bracket.
  • a heel supporting device of a ski binding for clamping a boot upon a ski comprising mounting means to be secured to a ski, a heel depressor having means normally acting upon the heel of the boot for depressing the same upon the ski, means for movably connecting said heel depressor to said mounting means, spring means for resiliently pressing said heel depressor upon said ski, transmitting means for transmitting the spring force of said spring means to said heel depressor, means operatively connected to said transmitting means for permitting said heel depressor to be lifted against the action of said spring means upon the application of an excessive force in the upward direction upon said heel depressor until the heel of the boot is released therefrom, an additional spring means interposed in the direction of force between said ski and said heel depressor, the maximum spring force of said additional spring means being lower than the spring force exerted by said spring means upon the heel on the ski, and means for limiting the resilient stroke of said additional spring means so as to permit the heel to move upwardly from the ski for a limited distance without causing the heel to be released from said
  • a heel supporting device of a ski binding for clamping a boot upon a ski comprising mounting means to be secured to a ski, a heel depressor having means normally acting upon the heel of the boot for depressing the same upon the ski, means for movably connecting said heel depressor to said mounting means, spring means for resiliently pressing said heel depressor upon said ski, transmitting means for transmitting the spring force of said spring means to said heel depressor, means operatively connected to said transmitting means for permitting said heel depressor to be lifted against the action of said spring means upon the application of an excessive force in the upward direction upon said heel depressor until the heel of the boot is released therefrom, an additional spring means interposed in the direction of force between said ski and said heel depressor, said additional spring means being under an initial tension when said heel depressor is pivoted downwardly toward said ski and means for limiting the resilient stroke of said additional spring means so as to permit the heel to move upwardly from the ski for a limited distance without causing the heel to be released from said heel depressor, where
  • a heel supporting device of a ski binding for clamping a boot upon a ski comprising mounting means to be secured to a ski, a heel depressor having means normally acting upon the heel of the boot for depressing the same upon the ski, means for movably connecting said heel depressor to said mounting means, spring means for resiliently pressing said heel depressor upon said ski, transmitting means for transmitting the spring force of said spring means to said heel depressor, means operatively connected to said the resilient 3,785,664 9 10 transmitting means for permitting said heel depressor posed in the direction of force between said ski and to be lifted against the action of Said spring means said heel depressor, and means for limiting the resilient upon h implication an excessive forcein the stroke of said additional spring means so as to permit ward direction upon said heel depressor until the heel the heel to move u ward] from the Ski for a limited of the boot is released therefrom, an additional spring p y means consisting of a pair of substantially GshaPed distance without causing the heel to be released

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US00217556A 1971-01-16 1972-01-13 Heel supporting device of a ski safety binding Expired - Lifetime US3785664A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712101973 DE2101973C3 (de) 1971-01-16 Fersenabstützvorrichtung für Sicherheitsskibindungen

Publications (1)

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US3785664A true US3785664A (en) 1974-01-15

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US00217556A Expired - Lifetime US3785664A (en) 1971-01-16 1972-01-13 Heel supporting device of a ski safety binding

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US (1) US3785664A (de)
AT (1) AT318444B (de)
CA (1) CA961878A (de)
CH (1) CH556182A (de)
IT (1) IT1045405B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3950003A (en) * 1972-09-13 1976-04-13 Hannes Marker Method and apparatus for releasing a ski boot from a ski

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529846A (en) * 1966-02-02 1970-09-22 Ver Baubeschlag Gretsch Co Heel supporting device for a ski safety binding
US3529844A (en) * 1967-01-25 1970-09-22 Georges P J Salomon Safety boot binding for skis
US3630539A (en) * 1969-07-23 1971-12-28 Heinz G Wagner Heel safety binding for a ski
US3697094A (en) * 1968-12-16 1972-10-10 Georges P J Salomon Safety boot binding for skis with two-stage recocking

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3529846A (en) * 1966-02-02 1970-09-22 Ver Baubeschlag Gretsch Co Heel supporting device for a ski safety binding
US3529844A (en) * 1967-01-25 1970-09-22 Georges P J Salomon Safety boot binding for skis
US3697094A (en) * 1968-12-16 1972-10-10 Georges P J Salomon Safety boot binding for skis with two-stage recocking
US3630539A (en) * 1969-07-23 1971-12-28 Heinz G Wagner Heel safety binding for a ski

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3950003A (en) * 1972-09-13 1976-04-13 Hannes Marker Method and apparatus for releasing a ski boot from a ski

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Publication number Publication date
CA961878A (en) 1975-01-28
AT318444B (de) 1974-10-25
CH556182A (de) 1974-11-29
IT1045405B (it) 1980-05-10

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