US3893684A - Safety ski binding - Google Patents

Safety ski binding Download PDF

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Publication number
US3893684A
US3893684A US427499A US42749973A US3893684A US 3893684 A US3893684 A US 3893684A US 427499 A US427499 A US 427499A US 42749973 A US42749973 A US 42749973A US 3893684 A US3893684 A US 3893684A
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United States
Prior art keywords
pistons
piston
release
ski binding
safety ski
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
US427499A
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English (en)
Inventor
Gottfried Schweizer
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.)
Gertsch AG
Original Assignee
Gertsch AG
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Filing date
Publication date
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Publication of US3893684A publication Critical patent/US3893684A/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
    • A63C9/0802—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings other than mechanically controlled, e.g. electric, electronic, hydraulic, pneumatic, magnetic, pyrotechnic devices; Remote control

Definitions

  • one or both of the active cylinders are subjected to pressure which cause the transfer [30] Foreign Applicafion Priority Data of hydraulicliquid therefrom into the reactive cylinder D 29 [972 A and depression of the piston therein against a resilient usma 173/72 member.
  • Flow inhibiting means are provided between the active cylinders and the reactive cylinder to mini- [ZIZ] 28255515350; mile the transfer of liquid in response to momentary i "5 T shocks but without appreciably inhibiting such trans- 1 0 can I fer in response to a substantial or sustained force.
  • any desired force relation- 3,350,1l0 10/1967 Salomon 280/1135 T ship necessary for release can be predetermined be- Primary Examiner-Robert R. Song Attorney, Agent, or Firm-Woodhams, Blanchard and Flynn tween lateral or vertical falls or combinations thereof (diagonal falls).
  • the system is applied in one embodiment to a binding for reception into the sole of a ski boot and in another embodiment is applied to a system external to the ski boot and engaging an end thereof.
  • the invention relates to a safety ski binding with an improved safety release, in which a damping and/or delay mechanism, such as a piston which displaces a liquid through a throttle opening, prevents the unintentional release of the binding and in which the liquid in turn moves a reaction piston which is under the pressure of an elastic element, such as a spring.
  • a damping and/or delay mechanism such as a piston which displaces a liquid through a throttle opening, prevents the unintentional release of the binding and in which the liquid in turn moves a reaction piston which is under the pressure of an elastic element, such as a spring.
  • German Offenlegungsschrift No. 1,578,974 provides a resistance means which acts against the disengaging movement of the support jaw or jaws, through which resistance means quick and short impacts are arrested with the result that disengagement occurs only during longer lasting forces acting in disengaging direction against a reduced resistance.
  • a safety ski binding is known from Austrian Patent No. 292,580 which consists of a front and a rear jaw in which at least one jaw is provided with a sliding element which is itself constructed as a piston, or which is connected to a piston, which is movably guided in a cylinder and is loaded in one direction by a pressure fluid.
  • the fluid pressure is created by a piston, which piston is guided in a cylinder and is under the influence of an elastic element such as a compression spring.
  • the cylinder for the piston of the locking element is connected to the cylinder for the piston which is loaded by the elastic element through a channel or through a pressure line.
  • the basic purpose of the invention is to further develop safety ski bindings of the last-mentioned type and to make such safety ski bindings also usable for the socalled diagonal release.
  • This purpose is attained according to the invention by providing at least three cylinders, of which two each receives one piston, which pistons receive the forces which lead to the release. and the third cylinder contains the known reaction piston.
  • the safety ski binding according to the invention attains this objective.
  • a force which occurs in the horizontal plane operates only one cylinder and piston unit; and a force which occurs in the vertical plane operates both cylinders with their respective pistons.
  • the piston into the direction of which the resulting force acts is loaded more than the other one.
  • the one piston is operated more and the other one less so that in the end the force which acts onto the reaction piston at a diagonal release is always smaller than at a release force lying in the vertical plane.
  • a release force in the horizontal direction 1 and in the vertical direction 2 then the resulting forces which extend between horizontal and vertical plane indicate values of between 1 and 2.
  • the hy draulic mechanism can fully meet these requirements because the less than fully loaded piston always adds only a fraction of the value under 1 to the loaded piston.
  • One advantageous feature of the invention is that the release can take place even though a control cam is omitted. This for example is the case with a front jaw. However, in other embodiments of the invention, such as in so-called centerpoint bindings, the use of a presently known control cam is necessary. By using a control cam any desired release in horizontal or vertical, or in any desired direction lying therebetween, is possible.
  • a further advantageous feature of the invention consists in that the throttle opening between the cylinders is formed of nozzles which provide an additional throttling from the cylinders containing the force receiving pistons toward the cylinder containing the reaction piston.
  • the liquid from the cylinder which directly receives the forces is throttled in the above-mentioned direction, while liquid flowing in the opposite direction passes easily. This makes it possible that during a return the liquid easily fills its original space and thereby permits the jaw also to return automatically and quickly into its original position.
  • the nozzle is constructed angularly at the inlet thereof but it is rounded off at the return point.
  • this nozzle can also be constructed as an ejector in the direction of the release forces. It lies also within the scope of the invention to construct the nozzle wall in direction of the passage with an oppositely directed flow-preventing surface. All these embodiments serve to slow down the passage in direction of the release forces. It can also be easily conceived to realize the various braking possibilities in any desired combination.
  • FIGS. I to 4 illustrate one exemplary embodiment of the inventive safety ski binding, wherein FIGS. I and 2 or 3 and 4 illustrate in associated views the safety ski binding in a closed or in an open condition.
  • FIG. I is a cross-sectional view along the line H of FIG. 2 and FIG. 2 is a cross-sectional view along the line III-Ill of FIG. 1; and FIGS. 3 and 4 correspond to FIGS. I and FIGS. 5 to 7 illustrate a different exemplary embodiment of the inventive safety ski binding, wherein FIG. 5 is a central cross-sectional view of FIG. 6 and FIG. 6 is a cross-sectional view along the line VIVI of FIG. 5 and FIG. 7 is the same cross-sectional view as FIG. 6, but in a so-called diagonal release position.
  • the approximately U-shaped binding part 1 is arranged in a not illustrated ski boot and is secured in a conventional manner on the ski 7 by means of a housing 6 which carries the locking elements 3, 4 and 5.
  • the housing 6 is secured to the ski by means of screws 2.
  • the locking elements 3 or 4 and 5 load with their rearward ends a common elastic apparatus.
  • This elastic apparatus is constructed in the exemplary embodiment as a hydraulic device which has three cylinders.
  • the locking elements 4 and 5 are connected to pistons 8 and 9 which are sealed on the ends thereof which communicate with the hydraulic medium. Rubber rings 10 and 11 are used as seals.
  • the locking element 3 is anchored in the housing 6 by means of a pin 29.
  • the reaction piston 13 is loaded by a spring 12 which in turn is supported by an abutment 22 on an eccentric cam 21.
  • the reaction piston I3 is also sealed by a rubber ring 14 on its end opposite the pressure medium.
  • the hydraulic device I5 itself consists substantially of three cylinders l6, l7 and 18 of which two are used to receive the pistons 8 or 9 and the third one 18 receives the reaction piston 13.
  • the cylinders 16 and 18 and the cylinders 17 and 18 are connected respectively by openings 19 and 20.
  • the openings 19 and 20, seen from the sides of the operating pistons 8 and 9, are constructed with entry corners and rounded-off continuations.
  • a spring I2 is connected between the locking element 3 and the reaction piston 13.
  • This spring 12 is used as a locking spring in known mechanical safety ski bindings and can be adjusted between predetermined limits by means of an eccentric cam 21 which is secured on a screw 21.
  • the locking elements 3, 4 and 5 rest in locking pans 23, 24 or 25.
  • the inclination of the locking pans 23, 24 or 25 in the lower and the lateral areas can be constructed in various ways.
  • the inclination 28 in the lower zone may be less than the inclination 26 or 27 in the lateral zone.
  • This known measure can, however, also be omitted from the inventive safety ski binding because by using the two forcetransmitting pistons and the spring-loaded reaction piston with the interpositioning of the hydraulic means IS a system has been created in which the release force which must be overcome is adjustable in horizontal, vertical or diagonal direction according to the conditions.
  • FIG. 3 illustrates a release in vertical direction and FIG. 4 a diagonal release.
  • both locking elements 4 and 5 are operated against the inclination 28 in the lower area of the locking pan 24 or 25 (not shown).
  • the hydraulic liquid which is provided in the cylinders 16 and I7 is simultaneously and with the same force urged through the openings 19 and 20 against the spring force 12.
  • this adjustment has the consequence that a duplicate release force must be overcome than if for example an exclusively horizontal release occurs in which either only the locking element 4 or only the locking element 5 is to be adjusted.
  • FIG. 4 shows that, for example, the locking element 5 was moved further backwardly and the locking element 4 was moved less backwardly in order to effect the necessary release.
  • FIGS. 5 to 7 A further exemplary embodiment is illustrated in FIGS. 5 to 7.
  • the same parts are identified with the same reference numerals as in the exemplary embodiment according to FIGS. 1 to 4. Parts which in their effect and partially also in structure correspond to the already described parts, but are different in their construction, have been identified to indicate this difference with a prime symbol
  • two bentleverlike sole holders 3], 32 are supported pivotally about the axes 33.
  • Rollers 36 or 37 are supported on the outer sole holders 31 by means of substantially vertical axes 34 and 35, against which rollers the ski boot 38 which is indicated in dash-dotted lines is engaged.
  • the binding housing 6 or hydraulic means 15 are arranged on the ski 7 with the interpositioning of a support plate 39.
  • a support plate 39 Above this support plate two parallel arranged sliding members 40 which are adjustable in longitudinal direction are provided, the two ends 41, 42 of which sliding members are bent.
  • the end of the sliding members which extends into the binding housing 6' is connected to an arm 44 of a clamp 45.
  • the bent ends 43 of the sole holder arms 32 engage this flange portion 42 of the sliding member 40.
  • the other ends of the sliding members 40 which are remote from the binding housing 6' are supported on the load pistons 8' or 9' which are connected to a spring-loaded reaction piston 13' through a hydraulic system 15'.
  • gas can be used as a hydraulic medium or also a liquid-gas composition can be used.
  • a liquid-gas composition can be used.
  • the delay can be accelerated or reduced.
  • the response time can be adjusted in relation to various temperatures between predetermined limits.
  • the use of a liquid-gas system offers further possibilities for the acceleration or reduction of the response time.
  • the delay may be achieved by a special construction of the passage opening between the cylinders for the operating pistons and that for the reaction piston. For example, this may be accomplished by installing a corresponding control for a solely horizontal release and the cylinder of the unactivated piston may then serve as additional space for the partial receiving of the displaced hydraulic medium.
  • attention must here be paid to the changing of the cylinder volume according to the spring force of the reaction piston. In this manner the relationship between horizontal and vertical release forces can be altered from the relationship 1 2.
  • the force relationship which acts on the spring by means of the adjustment of the lever arms can also be carried out in a conventional manner.
  • a hydraulic system can be created in which also an asymmetrical stress by the two sole holders is possible. In this case both power pistons are made adjustable.
  • a damping and/or delay mechanism comprising piston means for effecting a displacement of a fluid through a throttle opening prevents the unintended release of the binding, whereby said fluid in turn moves a reaction piston which is under the pressure of a resilient means
  • said iston means comprises means defining at least three cylinders, two of said cylinders each having a piston therein adapted to receive the forces attempting to effect a release of said ski binding, said reaction piston being mounted in the third cylinder and being movable against the force of said resilient means in response to a displacement of fluid from one of said two cylinders into said third cylinder and external force receiving means engaging each of said two pistons and effecting an application of a force to each of said two pistons.
  • one of said pistons engaged with said force receiving means being moved in response to a relative horizontal lateral movement between said one piston and said force receiving means, both of said pistons engaged with said force receiving means being simultaneously moved in response to a relative vertical movement between said pistons and said force receiving means, a simultaneous movement of both of said pistons requiring more force than a movement ofjust one of said pistons.
  • said resilient means is a spring and wherein the pre-tension of the spring for the reaction piston is variable by adjusting means for adjusting the initial position of an acting piston.
  • the improved safety ski binding according to claim 1 including means for adjusting the relationship between horizontal and vertical release force in the range of 1 2 3,5.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US427499A 1972-12-29 1973-12-26 Safety ski binding Expired - Lifetime US3893684A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1117372A AT319112B (de) 1972-12-29 1972-12-29 Sicherheitsskibindung
AT178973A AT320493B (de) 1972-12-29 1973-02-28 Sicherheitsskibindung

Publications (1)

Publication Number Publication Date
US3893684A true US3893684A (en) 1975-07-08

Family

ID=25596815

Family Applications (1)

Application Number Title Priority Date Filing Date
US427499A Expired - Lifetime US3893684A (en) 1972-12-29 1973-12-26 Safety ski binding

Country Status (8)

Country Link
US (1) US3893684A (ru)
JP (1) JPS49101136A (ru)
AT (2) AT319112B (ru)
CA (1) CA986547A (ru)
CH (2) CH572351A5 (ru)
DE (1) DE2362349A1 (ru)
FR (1) FR2212159B3 (ru)
IT (1) IT1002449B (ru)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372574A (en) * 1978-04-27 1983-02-08 Tmc Corporation Safety ski binding
US4394032A (en) * 1979-11-30 1983-07-19 Geze Gmbh Ski safety binding
US4728115A (en) * 1985-12-02 1988-03-01 Nordica S.P.A. Concealable ski binding
US5294144A (en) * 1991-09-10 1994-03-15 Marker Deutschland Gmbh Hydraulic ski binding incorporating electronically-controlled bypass
US20130334795A1 (en) * 2012-06-01 2013-12-19 Marker Deutschland Gmbh Boot retaining unit with damping

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4463968A (en) * 1980-06-24 1984-08-07 The Regents Of The University Of California Method for programmed release in ski bindings
US4494768A (en) * 1980-06-24 1985-01-22 The Regents Of The University Of California Apparatus for programmed release in ski bindings
EP0042762A3 (en) * 1980-06-24 1982-07-21 The Regents Of The University Of California Method and apparatus for programmed release in ski bindings
DE3669111D1 (de) * 1985-08-01 1990-04-05 Charles Parsons Sicherheitsskibindung.
AT402157B (de) * 1990-08-07 1997-02-25 Varpat Patentverwertung Plattenförmige dämpfungseinrichtung für eine schibindung
DE19800702A1 (de) * 1998-01-10 1999-07-15 Marker Deutschland Gmbh Schuhhalteraggregat

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3350110A (en) * 1965-08-25 1967-10-31 Georges P J Salomon Safety ski binding

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3350110A (en) * 1965-08-25 1967-10-31 Georges P J Salomon Safety ski binding

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372574A (en) * 1978-04-27 1983-02-08 Tmc Corporation Safety ski binding
US4394032A (en) * 1979-11-30 1983-07-19 Geze Gmbh Ski safety binding
US4728115A (en) * 1985-12-02 1988-03-01 Nordica S.P.A. Concealable ski binding
US5294144A (en) * 1991-09-10 1994-03-15 Marker Deutschland Gmbh Hydraulic ski binding incorporating electronically-controlled bypass
US20130334795A1 (en) * 2012-06-01 2013-12-19 Marker Deutschland Gmbh Boot retaining unit with damping
US8899611B2 (en) * 2012-06-01 2014-12-02 Marker Deutschland Gmbh Boot retaining unit with damping

Also Published As

Publication number Publication date
JPS49101136A (ru) 1974-09-25
IT1002449B (it) 1976-05-20
FR2212159B3 (ru) 1976-10-15
DE2362349A1 (de) 1974-07-04
CH572351A5 (ru) 1976-02-13
AT320493B (de) 1975-02-10
CA986547A (en) 1976-03-30
CH583573A5 (ru) 1977-01-14
AT319112B (de) 1974-12-10
FR2212159A1 (ru) 1974-07-26

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