US3762735A - Ski binding - Google Patents

Ski binding Download PDF

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Publication number
US3762735A
US3762735A US00180808A US3762735DA US3762735A US 3762735 A US3762735 A US 3762735A US 00180808 A US00180808 A US 00180808A US 3762735D A US3762735D A US 3762735DA US 3762735 A US3762735 A US 3762735A
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United States
Prior art keywords
ski
binding
contact
electromagnet
acceleration
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
US00180808A
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English (en)
Inventor
T Smolka
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
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 Gertsch AG filed Critical Gertsch AG
Application granted granted Critical
Publication of US3762735A publication Critical patent/US3762735A/en
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Expired - Lifetime legal-status Critical Current

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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
    • A63C9/088—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with electronically controlled locking devices
    • A63C9/0885—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with electronically controlled locking devices remotely operated, e.g. by the skier

Definitions

  • the invention relates to a ski binding which upon occurrence of an overload, such as during a fall, frees the ski boot, wherein an electromagnet is provided for controlling the locking and unlocking operation, said electromagnet being arranged in a circuit fed by a battery and controlled by a switch.
  • Ski bindings which are equipped with spring-loaded locks. If an overload occurs, the lock is released by overcoming a selected spring force.
  • the adjustment in such a device must be adjusted to correspond to the weight and the skiing capability of the user.
  • no means have yet been devised to effeet an adjustment which would always completely correspond to such conditions.
  • Such an adjustment depends also on the build and the physical capacity of the user and on the condition of the ski run. In the case of an icy ski run, different conditions occur than for example in the case of powder snow. Furthermdre during a slow fall the binding is opened at a different time than if a sudden stress occurs.
  • the stress of the body parts is first transferred to the boot and only then from the boot to the binding. The safety release thus depends also on thestrue ture of the boot.
  • the binding may be opened manually by the user.
  • a switch was installed into the ski pole, which switch, when operated, opens an electrically controlled binding. This, however, leaves to the judgment and the reaction capability of the user whether or not he should open the binding at a given moment. This often results in wrong decisions. Furthermore, theski pole carrying the switch could be lost.
  • the purpose of the invention is to avoid these disadvantages and the invention is characterized in that the switch is comprised of at least one acceleration sensitive device which at a preselected change in either velocity or acceleration will change the condition of the circuit.
  • the switch is comprised of at least one acceleration sensitive device which at a preselected change in either velocity or acceleration will change the condition of the circuit.
  • FIG. I is a schematic illustration of the fundamental structure of the invention.
  • FIGS. 2 and 3 illustrate in associated views an acceleration sensitive device.
  • FIGS. 4 to 6 schematically illustrate a detail of an acceleration sensitive device in three variations.
  • FIGS. 7 and 8 illustrate two circuit diagrams.
  • FIGS. 9 to 11 are three schematic positions of a known binding (according to Austrian Patent No.
  • the ski boot 1 is held on the ski 2 by a heel holder 3. and ajaw 4. Both in the heel holder 3 and also in the jaw 4 there are provided electromagnets 5 and 6, the cores 7 and 8 of which respectively form springloaded locks which hold the bindings in the position of use.
  • the electromagnets 5, 6 are positioned in a circuit which is fed by a battery 9 and which is broken by an acceleration sensitive device 10. If the speed changes at a certain, predetermined amount, then the acceleration sensitive device 10 closes the circuit so that the electromagnets 5, 6 move their cores 7, 8 against the force of the spring 11 or 12. Thus, the heel binding 3 can pivot about the axis 23 and the jaw 4 about the axis 24.
  • Each binding 3, 4 has its own acceleration sensitive device 10.
  • the acceleration sensitive device can be arranged in the binding, on or in the boot, on the ski, on the foot or on any other part of the body. Various known acceleration sensitive devices can be used.
  • the acceleration sensitive device consists of a cylindrical housing 13 in which is arranged an annular contact 14 with the interpositioning of an insulation 15.
  • the second contact 16 is supported within the contact ring 14 eccentrically on a resilient rod 17.
  • the resilient rod 17 will flex and permit the contact 16 to contact the contact ring 14 and close the circuit through the lines l8, 19.
  • a contact of the contacts l4, 16 at a greater or smaller acceleration will occur depending on the direction in which the acceleration occurs. In this manner different releasevalues are obtained in different directions which different release values are coordinated to the stresses of the body parts of the skier. Therefore, for example the release values occurring during a fall forwardly will be adjusted larger than in case of a twisting fall.
  • the contact has an oval shape and the contact 16 is arranged offset within the contact 14.
  • the contacts 14 are shaped according to predetermined curves which are chosen according to the expected conditions of use.
  • an integrator 20 is arranged between magnet 5 and acceleration sensitive device 10. If a velocity change, or acceleration, occurs, the acceleration sensitive device 10 closes, as above described, the circuit'which is fed by the battery 9 and the switching impulse is passed on to the integrator.
  • the integrator is adjusted in such a manner that it does not operate the electromagnet 5 at short current impulses. This means that the binding does not open during short impacts which are not dangerous for the skier and as they occur during skiing. During slightly longer lasting stresses the current impulse, however, is forwarded to the electromagnet 5 and the binding or the boot is released. These time differences are, of course, very small and are closely coordinated to the stresses of the body parts.
  • FIG. 8 A different switching possibility is shown in FIG. 8 in which a differentiator 21 and a discriminator 22 are provided in the circuit fed by the battery 9 between acceleration sensitive device 10 and electromagnet 5.
  • a capacitative or inductive acceleration sensitive device is preferable.
  • Such acceleration sensitive devices provide a voltage which is proportional to the acceleration and the differentiator 21 passes a current impulse on to the discriminator 22.
  • This current impulse is proportional to the steepness of the voltage rise, that is, proportional to the voltage increase in a given unit of time.
  • the discriminator 22 passes this current impulse, when it reaches a predetermined value, on to the electromagnet 5.
  • adjustment means will be provided at least in one of the parts 10, 21, 22 in order to be able to perform an adjustment to skiing manner, body weight, etc. Also in the case of this arrangement the binding will not open at short impacts which are not dangerous for the skier.
  • the schematic binding according to FIGS. 9 to 11 has a sole holder 25 which can pivot about the axis 23 on a carriage 26 which is movable on the base plate 27.
  • a lock 29 which is also pivotable about an axis 28 is positioned on the carriage 26.
  • a release lever 31 is arranged on the pivot axis 23 through a slotted hole 30, which release lever has a stop 32. This stop 32 acts onto a further stop 33 of the lock 29.
  • the spring 34 is supported at one end on a projection 35 of the base plate 27 and at the other end on an arm 36 of the release lever 31. The spring 34 thus exerts pressure through the parts 36, 31 the carriage 26 and thence through the clamping loop 25 against the sole of the ski boot. For this purpose, only the horizontal component of the spring force is utilized.
  • the lock 29 acts through a stop member 37 to hold the sole holder 25 in operating position.
  • the tension of the spring 34 is preferably adjustable in any convenient, conventional manner, such as by being mounted at one end on threadedly adjustable means or by relative adjustment between plates 26 and 27 as shown in Austrian Patent No. 276 180.
  • the core 7 of the electromagnet is supported pivotally in a slotted hole 38 provided on the release lever 31. If a critical change in acceleration occurs, the acceleration sensitive device closes the circuit fed by the battery 9. The electromagnet 5 pulls the core 7 downwardly through which the release lever 31 swings also downwardly about the axis 23 and the stops 32, 33 are separated from one another. Now the lock 29 releases the stop part 37 of the sole holder 25 so that the latter can swing upwardly about the axis 23.
  • the binding can, as can be taken from FIG. 11, still release mechanically. In such event, the stop part 37 will press the lock 29 through the parts 33, 32, 31, 36 back against the force of the spring 34.
  • a control lamp or any other signal device which indicates the operating readiness of the binding.
  • the invention is not limited to the embodiments expressly illustrated. There are a number of further embodiments which lie within the scope of the invention. It is possible to apply the invention to a later installation, or addition in or to, known mechanical ski bindings. Furthermore, of course, there exist many further electrical switching-combination possibilities.
  • the electromagnet is coupled with a univibrator (monostable sweep circuit) which activates the electromagnet for only a limited, but freely adjustable, period of time.
  • This univibrator reacts to a voltage change and remains activated only for a limited time, regardless of how long the voltage change lasts.
  • ski binding adapted to automatically release a ski boot upon the occurrence of an overload, for example, during a fall
  • said ski binding having an electromagnet for releasing the binding arranged in a circuit which is supplied by a battery the power of which is controlled by a contact device
  • the improvement comprises an acceleration sensitive device having a contact arranged on a resilient rod, said contact being provided within a second contact spaced therefrom that at a predetermined acceleration change through a movement of the resilient rod said contacts effect a control of said electromagnet.
  • ski binding adapted to automatically release a ski boot upon the occurrence of an overload, for example, during a fall
  • said ski binding having an electromagnet for releasing the binding arranged in an electrical circuit which is supplied by a battery the power of which is controlled by a contact device, comprising the improvement wherein said contact device consists of a sensing means responsive solely to acceleration forces on the ski and being completely free of responsiveness to forces generated as a result of the position of the ski relative to the ground to directly control the ski binding.
  • said sensing means includes an acceleration responsive switch responsive solely to acceleration forces on said ski and being completely free of responsiveness to forces generated as a result of the position of the ski relative to the ground and integrator circuit connected in series therewith, said switch and said integrator circuit being connected in a loop between said battery and said electromagnet.
  • said sensing means includes an acceleration responsive switch responsive solely to acceleration forces on said ski and being completely free of responsiveness to forces generated as a result of the position of the ski relative to the ground and a series connected differentiator circuit and discriminator circuit connected in series with said switch, said switch and said series connected differentiator circuit and said discriminator circuit being connected in a loop between said battery and said electromagnet.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US00180808A 1970-10-14 1971-09-15 Ski binding Expired - Lifetime US3762735A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT924270A AT299031B (de) 1970-10-14 1970-10-14 Skibindung

Publications (1)

Publication Number Publication Date
US3762735A true US3762735A (en) 1973-10-02

Family

ID=3612446

Family Applications (1)

Application Number Title Priority Date Filing Date
US00180808A Expired - Lifetime US3762735A (en) 1970-10-14 1971-09-15 Ski binding

Country Status (4)

Country Link
US (1) US3762735A (enExample)
JP (1) JPS5248852B1 (enExample)
AT (1) AT299031B (enExample)
FR (1) FR2109799A5 (enExample)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3826509A (en) * 1970-07-08 1974-07-30 Gertsch Ag Safety ski binding
US3907316A (en) * 1972-09-13 1975-09-23 Hannes Marker Method and devices for releasing a ski boot from the ski
US4156534A (en) * 1976-09-02 1979-05-29 S.A. Establissements Francois Salomon & Fils Safety bindings for skis
US4159124A (en) * 1976-12-30 1979-06-26 S.A. Etablissements Francois Salomon & Fils Safety binding for a ski
US4280714A (en) * 1976-11-04 1981-07-28 S.A. Etablissements Francois Salomon & Fils Safety bindings for skis
US4291894A (en) * 1974-05-07 1981-09-29 Antonio Nicholas F D Electrical ski boot release
EP0042717A1 (en) * 1980-06-19 1981-12-30 Yasushi Horiuchi Ski binding
US4349212A (en) * 1978-08-28 1982-09-14 Tmc Corporation Holding plate, in particular for ski bindings
US4361344A (en) * 1980-08-11 1982-11-30 The Regents Of The University Of California Ski binding with universal release
US4371188A (en) * 1980-06-24 1983-02-01 University Of California Method for programmed release in ski bindings
US4402524A (en) * 1979-06-07 1983-09-06 Marker-Patentverwertungsgesellschaft Mbh Battery-charging generator for electronic ski binding
US4463968A (en) * 1980-06-24 1984-08-07 The Regents Of The University Of California Method for programmed release in ski bindings
US4482168A (en) * 1981-03-10 1984-11-13 Tmc Corporation Safety ski binding
US4494768A (en) * 1980-06-24 1985-01-22 The Regents Of The University Of California Apparatus for programmed release in ski bindings
US4563021A (en) * 1981-08-17 1986-01-07 Marker International Company Release mechanism for safety ski bindings
US4602804A (en) * 1983-09-08 1986-07-29 Tmc Corporation Safety ski binding
US20070090626A1 (en) * 2005-10-20 2007-04-26 Salomon S.A. Safety binding
US20140077656A1 (en) * 2012-09-19 2014-03-20 Jeff Thramann Generation of electrical energy in a ski or snowboard

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2938756A1 (de) * 1979-09-25 1981-04-02 Marker, Hannes, 8100 Garmisch-Partenkirchen Elektronische sicherheits-skibindung
DE3017841A1 (de) * 1980-05-09 1981-11-12 Geze Gmbh, 7250 Leonberg Batteriebetriebene, elektrisch ausloesende sicherheitsskibindung
EP0137763B1 (en) * 1983-02-11 1989-05-24 Marker International Heel piece for safety ski binding
JPH03135499A (ja) * 1989-10-23 1991-06-10 Gifushi 摩耗検知機能を有する脱水ケーキの輸送装置
EP1273324B1 (de) * 2001-07-05 2005-12-14 Hans-Ulrich Kessler Sicherheitsbindung zum Halten einer Person oder eines Gegenstandes auf einem weiteren Gegenstand

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE849221C (de) * 1951-03-13 1952-09-11 Rudolf Quadt Erschuetterungskontakt fuer Sicherheitsanlagen
US3246907A (en) * 1964-01-07 1966-04-19 Douglas S Chisholm Magnetic ski binding or harness

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3826509A (en) * 1970-07-08 1974-07-30 Gertsch Ag Safety ski binding
US3907316A (en) * 1972-09-13 1975-09-23 Hannes Marker Method and devices for releasing a ski boot from the ski
US3940156A (en) * 1972-09-13 1976-02-24 Hannes Marker Safety ski binding
US3950003A (en) * 1972-09-13 1976-04-13 Hannes Marker Method and apparatus for releasing a ski boot from a ski
US4291894A (en) * 1974-05-07 1981-09-29 Antonio Nicholas F D Electrical ski boot release
US4156534A (en) * 1976-09-02 1979-05-29 S.A. Establissements Francois Salomon & Fils Safety bindings for skis
US4280714A (en) * 1976-11-04 1981-07-28 S.A. Etablissements Francois Salomon & Fils Safety bindings for skis
US4159124A (en) * 1976-12-30 1979-06-26 S.A. Etablissements Francois Salomon & Fils Safety binding for a ski
US4349212A (en) * 1978-08-28 1982-09-14 Tmc Corporation Holding plate, in particular for ski bindings
US4402524A (en) * 1979-06-07 1983-09-06 Marker-Patentverwertungsgesellschaft Mbh Battery-charging generator for electronic ski binding
EP0042717A1 (en) * 1980-06-19 1981-12-30 Yasushi Horiuchi Ski binding
US4494768A (en) * 1980-06-24 1985-01-22 The Regents Of The University Of California Apparatus for programmed release in ski bindings
US4371188A (en) * 1980-06-24 1983-02-01 University Of California Method for programmed release in ski bindings
US4463968A (en) * 1980-06-24 1984-08-07 The Regents Of The University Of California Method for programmed release in ski bindings
US4361344A (en) * 1980-08-11 1982-11-30 The Regents Of The University Of California Ski binding with universal release
US4482168A (en) * 1981-03-10 1984-11-13 Tmc Corporation Safety ski binding
US4563021A (en) * 1981-08-17 1986-01-07 Marker International Company Release mechanism for safety ski bindings
US4602804A (en) * 1983-09-08 1986-07-29 Tmc Corporation Safety ski binding
US20070090626A1 (en) * 2005-10-20 2007-04-26 Salomon S.A. Safety binding
US7438307B2 (en) * 2005-10-20 2008-10-21 Salomon S.A. Safety binding
US20140077656A1 (en) * 2012-09-19 2014-03-20 Jeff Thramann Generation of electrical energy in a ski or snowboard
US9024462B2 (en) * 2012-09-19 2015-05-05 Jeff Thramann Generation of electrical energy in a ski or snowboard

Also Published As

Publication number Publication date
AT299031B (de) 1972-06-12
FR2109799A5 (enExample) 1972-05-26
JPS5248852B1 (enExample) 1977-12-13
DE2139557B2 (de) 1974-10-24
DE2139557A1 (de) 1972-04-20

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