US3888498A - Releasable ski binding - Google Patents

Releasable ski binding Download PDF

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Publication number
US3888498A
US3888498A US414424A US41442473A US3888498A US 3888498 A US3888498 A US 3888498A US 414424 A US414424 A US 414424A US 41442473 A US41442473 A US 41442473A US 3888498 A US3888498 A US 3888498A
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United States
Prior art keywords
housing
compartments
spring
compartment
ski binding
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
US414424A
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English (en)
Inventor
Ulrich Gertsch
Valentin Balass
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
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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
Priority to CH1481874A priority Critical patent/CH581481A5/de
Application granted granted Critical
Publication of US3888498A publication Critical patent/US3888498A/en
Anticipated expiration legal-status Critical
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
    • A63C9/0802—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

  • ABSTRACT A releasable ski binding with a locking element which during the release action of the binding retracts out of its holding position against spring force, this locking element being coupled with a displacement element,
  • the displacement element immerses into a first of two compartments containing a fluid medium and communicating with one another by a throttle location.
  • a first spring is coupled with the displacement element by means of the fluid medium in the first compartment and a second spring is coupled with the displacement element by means of the fluid medium in both compartments.
  • fhe reliability of releasable ski bindings is dependent upon conditions which are in paradox with one another. namely upon conditions which are diametrically opposed to one another, n the one hand. the binding must give in the presence ofevternally acting forces in order to avoid injury to the skier. On the other hand. the binding must not give in the presence of externally acting forces so as to avoid faulty release of the binding.
  • An absolutely reliable releasable ski binding therefore must be capable of differentiating between forces which can cause injury to the skier from non-dangerous forces.
  • Another and more specific object of the present in vention relates to an improved construction of releasable or safety ski binding which is relatively simple in construction and design. extremely reliable in operation. not readily subject to malfunction or breakdown. and provides for positive and reliable release action of the binding so as to prevent injury to the skier.
  • the invention relates to a new and improved construction of releasable ski binding of the previously mentioned type. That is to say. a releasable ski binding with a locking element which during release of the binding retracts or returns out of its holding position against spring force, the locking element being coupled with a displacement element which immerses into a (first) of two compartments containing a fluid medium and which communicate with one another by means of a throttle location.
  • the invention contemplates coupling with the displacement element a first spring by means of the fluid medium in the first compartment and coupling with the displacement element a second spring by means of the fluid medium in both compartments.
  • the locking element *slowly returns or retracts out of its holding position, namely within the time span required for the displacement of the corresponding quantity of liquid or fluid medium, then the displacement element can immerse into the first compartment. whereby through the agency of the fluid medium or liquid displaced in the second compartment the second spring is loaded. However. if there acts upon the locking element an increased" force. which strives to accelerate the displacement of the fluid medium or liquid out of the first compartment. but because of the (effective) throttling action however cannot be accelerated. then there does not arise a delay during retraction of the locking element. rather the locking element can give against the action of the first spring during each speed which. as a practical matter, comes under consideration. Basically.
  • FIG. I is a longitudinal sectional view of a pneumatic locking mechanism for holding the front or rear end of a boot or a release plate at the ski;
  • FIG. 2 is a longitudinal sectional view of a further embodiment of pneumatic locking mechanism for holding the front or rear end of a boot or a release plate at the ski;
  • H0. 3 is a hydraulic mechanical variant embodiment of the invention.
  • FIG. 4 is a further hydraulic mechanical embodiment of the invention DETAILED DESCRIPTION OF THE PREFERRED EMBODlMENTS Describing now the drawings, with the exemplary embodiment of releasable ski binding as depicted in FIG. I.
  • the locking mechanism which has been designated in its entirety by reference numeral 1 comprises a cylindrical housing 2 in which there is retained for axial movement a locking element 3.
  • the locking element 3 embodies a guide portion or part 4 which is guided in piston-like manner within the housing 2.
  • a plunger 5 extends from such guide portion 4 into the housing 2, at the free end 5a of which there is suitably anchored the folded over portion 6 of a rolling bellows or diaphragm 7.
  • an inlet valve mechanism 8 by means of which compressed air or a pressurized gas can be introduced into the interior of the rolling bellows or diaphragm 7. that is to say. into the compartment or chamber 9.
  • This compartment or chamber 9 is sealed by an intermediate wall 10 which carries at its side facing away from the rolling bellows or diaphragm 7 a sealing lip 11 which bears against the inner wall of the housing 2.
  • a further compartment or chamber 12 which is connected with the compartment or chamber 9 by a calibrated throughput or throughpassage nozzle 13.
  • This throughpassage nozzle 13 is located in an appropriate opening 10a of the wall 10 which together with the rolling bellows '7 and the sealing lip 11 is fabricated of one-piece from a rubber-like or elastomeric material.
  • the compartments 9 and 12 are filled with compressed air or with a pressurized gas, which provides a resilient resistance opposing the retraction or return of the locking element 3 in the housing 2 and through the agency of the locking element 3 directly or indirectly (for instance by using a release plate) exerts a resilient holding force upon the ski boot or the like.
  • the magnitude of this holding force is thus apart from the rest condition dependent upon the speed with which the possibly encountered release action occurs, in other words the speed with which therefore the locking element 3 is pushed back into the housing.
  • the plunger which in this case has been designated by reference character 51, is extended in length so as to pass through a central opening of the partition or intermediate wall 10 into the compartment or chamber 12.
  • the regulation or adjusting screw. which has here been designated by reference character 141, in this case extends through the plunger 51 and cooperates with an equalization or balancing channel 15 provided at the plunger and which channel communicates with both compartments 9 and 12 respectively.
  • the equalization or balancing channel 15 together with the annular or ring-shaped gap surrounding the plunger 51 and enclosed by the partition wall 10 forms the compensation or balancing connection.
  • the filling valve 8 is located at the end wall 2a of the housing 2.
  • the mode of operation of this embodiment is basically the same as that discussed above in conjunction with FIG. 1.
  • One difference merely resides in the fact that the plunger in the compartment or chamber 12 tends to directly bring about an increase in pressure, which however with a certain retraction or return movement of the locking element 3 is smaller than that in the compartment 9, corresponding to the larger displacement volume of the rolling bellows or diaphragm 7.
  • the characteristic of such locking mechanism can be influenced in a number of different ways.
  • the wall III of the embodiment of FIG. I can be constructed in a membrane-like or diaphragmdike manner and during a sudden stroke the nozzle 13 can retract in the direction of the. and it necessary. up to the regulating screw 14. so that the throttle location can be correspondingly restricted or in fact completely closed.
  • What is decisive for the characteristic of such locking mechanism is furthermore of course also the volume of gas which is filled-in in relation to the volume of the compartments. wherein both factors can be changed.
  • the compartment 12 also could be closed by a roll' ing bellows or diaphragm which is adjustable by means of a plunger.
  • the locking mechanism can be furthermore assembled together in building-block manner from interexchangeable elements which. depending upon the desired characteristic. can be assembled together.
  • gas cushioning can be provided independently of the fact whether the actual locking element is supported to be displaceablc. pivotable or otherwise movable and correspondingly retracts.
  • a locking element which is constructed as a pivotal pin 33 and which. as is known. in this particular art. is intended to retain the front or rear end of a re lease plate or the ski boot at the ski.
  • a piston 34 defining a displacement element and also like the collar 35 of the locking element 33, is guided in a cylindrical compartment or chamber 36 of a housing designated in its entirety by reference numeral 37.
  • the compartment 36 communicates through the agency of a throttle opening 38 with a further cylindrical compartment or chamber 39 enclosed within the housing 37.
  • the adjustment screw 44 in turn is located in a threaded bore 44a of an adjustment ring 45' defining a countersupport which is inserted into the internal threading 43a of the housing 43.
  • the adjust ment screw 44" (FIG. 4 I. on the other hand. is inserted into the internal threading 37a of the housing 37.
  • one end of a spring 46 bears against the corresponding countersupport. i.e. adjustment rings 45' and 45" respectively. which at the other respective end bear against the housing 37, in order to press the same against the stop 42 of the spring housing 43.
  • the binding in the presence of lower forces is opposed by a smaller resistance and in the presence of larger forces requiring rapid release is on posed by a resistance which at the beginning is greater. whereby when such larger forces continue to prevail the resistance gradually is only produced by the normal release spring.
  • the binding also responds to greater impacts in a resilient flexible manner and it is accordingly not blocked even during the time span re quired for pressure equalization between both compartments. Consequently. under this aspect. the effectiveness of the throttling is not subjected to any limits and. as mentioned. there exists the necessity of a compromise in this respect.
  • the intermediate wall separating both compartments 36 and 39. could be elastically resilient in order to initially increase the throttling action similar to HQ. 1.
  • lt also would be possible to insert a movable element in the throttle opening 38. which is shifted or displaced out of its normal position as a function of the flow velocity in order to temporarily increase the effcctiveness of the throttling action.
  • These measures basically do not serve the purpose of influencing as a function of time the release action. although they are suitable for delaying the pressure equalization between both compartments. in this case the purpose also resides in influencing the spring characteristic insofar as namely owing to a temporarily more pronounced throttling the spring 46 is correspondingly more markedly loaded and fo a longer time.
  • hydraulic compo nent can be constructed as a mountable unit with or without spring 41 or locking element 33, and which advantageously is encapsulated.
  • spring 41 or locking element 33 which advantageously is encapsulated.
  • FIGS. 3 and 4 belong in the category of a unitary binding.
  • the indicated adjustment possibility for the springs 41 and 46 respectively is not to be considered as being an absolute necessity.
  • a releasable ski binding comprising a housing means. a locking element which is displaced back against spring force during release out of its holding position mounted in said housing means, a displacement element. said locking element being operatively coupled with said displacement element.
  • a first spring coupled with the displace ment element by means of the fluid medium in the first compartment and a second spring coupled with the dis placement element by means of the fluid medium in both compartments.
  • both of said compartments are arranged behind one another in the displacement direction of said housing which is common to both said compartments. and a second displacement element for delimiting the second compartment in such direction.
  • a releasable ski binding comprising a locking element which is displaced back against a resilient force during release out of its holding position, a displacement element with which said locking element is coupled. said displacement element immersing into one of two compartments containing a fluid medium and communicating with one another through the agency of a throttle location.
  • the improvement comprising a first resilient means operatively coupled with the displacement element by means of the fluid medium in the first compartment and a second resilient means coupled with the displacement element by means of the fluid medium in both compartments.
  • a releasable ski binding comprising housing means. a locking element which is displaced back against a resilient forced during release out of its holding position supported by said housing means. a displacement element. said locking element being opera- 10 of said two compartments, and wherein a first resilient force acts upon the displacement element by means of the fluid medium in the first compartment and a second resilient force acts upon the displacement element by means of the fluid medium in both compartments.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)
US414424A 1972-11-15 1973-11-09 Releasable ski binding Expired - Lifetime US3888498A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH1481874A CH581481A5 (en) 1973-11-09 1974-11-06 Hydraulically operated safety ski release - has hydraulic piston on toe or heel catch for automatic freeing of ski boot

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1659472A CH570816A5 (de) 1972-11-15 1972-11-15

Publications (1)

Publication Number Publication Date
US3888498A true US3888498A (en) 1975-06-10

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ID=4418642

Family Applications (1)

Application Number Title Priority Date Filing Date
US414424A Expired - Lifetime US3888498A (en) 1972-11-15 1973-11-09 Releasable ski binding

Country Status (4)

Country Link
US (1) US3888498A (de)
JP (1) JPS5546749B2 (de)
CH (1) CH570816A5 (de)
DE (2) DE2356415C2 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4290624A (en) * 1978-08-16 1981-09-22 Vereinigte Baubeschlagfabriken Gretsch & Co. Gmbh Release setting indicating device for a ski safety binding
US4372574A (en) * 1978-04-27 1983-02-08 Tmc Corporation Safety ski binding
EP0829280A1 (de) * 1996-09-03 1998-03-18 Marker Deutschland GmbH Schuhhalteraggregat
US6659494B1 (en) * 2000-08-10 2003-12-09 Ralph M. Martin Backwards release ski binding on a pivot plate mount
US6769711B1 (en) * 2000-08-10 2004-08-03 Ralph M. Martin Gas powered backwards release ski binding

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2634649C2 (de) * 1976-08-02 1982-06-24 Bernhard 5500 Trier Kirsch Auslösevorrichtung für Sicherheitsbindungen
JPS6140498A (ja) * 1984-08-02 1986-02-26 Matsushita Electric Ind Co Ltd 電動送風機
DE19733848A1 (de) * 1997-08-05 1999-02-11 Marker Deutschland Gmbh Schuhhalteraggregat
DE19741266A1 (de) * 1997-08-05 1999-02-11 Marker Deutschland Gmbh Stoßdämpfer
US7104564B2 (en) * 2000-08-10 2006-09-12 Martin Ralph M Backwards release ski binding

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348855A (en) * 1965-06-21 1967-10-24 Marker Hannes Safety toe iron for ski bindings
US3350110A (en) * 1965-08-25 1967-10-31 Georges P J Salomon Safety ski binding

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348855A (en) * 1965-06-21 1967-10-24 Marker Hannes Safety toe iron for ski bindings
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
US4290624A (en) * 1978-08-16 1981-09-22 Vereinigte Baubeschlagfabriken Gretsch & Co. Gmbh Release setting indicating device for a ski safety binding
EP0829280A1 (de) * 1996-09-03 1998-03-18 Marker Deutschland GmbH Schuhhalteraggregat
US5957481A (en) * 1996-09-03 1999-09-28 Marker Deutschland Gmbh Boot retaining unit
US6659494B1 (en) * 2000-08-10 2003-12-09 Ralph M. Martin Backwards release ski binding on a pivot plate mount
US6769711B1 (en) * 2000-08-10 2004-08-03 Ralph M. Martin Gas powered backwards release ski binding

Also Published As

Publication number Publication date
CH570816A5 (de) 1975-12-31
DE2366481C2 (de) 1983-04-28
JPS4981144A (de) 1974-08-05
DE2356415C2 (de) 1982-11-25
JPS5546749B2 (de) 1980-11-26
DE2356415A1 (de) 1974-05-16

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