US3300226A - Ski construction and method for varying the flexibility thereof - Google Patents

Ski construction and method for varying the flexibility thereof Download PDF

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Publication number
US3300226A
US3300226A US399525A US39952564A US3300226A US 3300226 A US3300226 A US 3300226A US 399525 A US399525 A US 399525A US 39952564 A US39952564 A US 39952564A US 3300226 A US3300226 A US 3300226A
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United States
Prior art keywords
stiffener
ski
inherent
bendability
elongate
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Expired - Lifetime
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US399525A
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English (en)
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Jr Charles L Reed
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Individual
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Individual
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Priority to US399525A priority Critical patent/US3300226A/en
Priority to DE19651478168 priority patent/DE1478168A1/de
Priority to AT800765A priority patent/AT281644B/de
Priority to CH1328765A priority patent/CH442104A/fr
Application granted granted Critical
Publication of US3300226A publication Critical patent/US3300226A/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
    • A63C5/00—Skis or snowboards
    • A63C5/06—Skis or snowboards with special devices thereon, e.g. steering devices
    • A63C5/07—Skis or snowboards with special devices thereon, e.g. steering devices comprising means for adjusting stiffness

Definitions

  • the present invention relates to a ski construction and method for varying the flexibility thereof.
  • skis for travel the travel surface is found to change in character or condition as changes occur in the weather.
  • a travel surface may assume various degrees of hardness, density, and slickness.
  • the different conditions of the travel surface may either be beneficial to ski travel, or detrimental thereto.
  • skis of differing designs or characteristics have been made available in the past, but the necessity of substituting one form of ski for another has not proven popular or desirable.
  • An object of the present invention is to provide a method and means for imparting to a given pair of skis, various degrees of flexibility and resiliency in order to suit the skis to various travel surface conditions.
  • Another object of the invention is to provide means which is instantaneously adjustable for obtaining various degrees of flexibility and resiliency in the body of a ski.
  • Another object is to provide means of a simple, durable, and efiective nature for varying the flexibility and resiliency of skis in the direction of bending.
  • a further object is to provide a novel and effective variable stiffener for bendable elongate bodies.
  • FIG. 1 is a side elevational view of a ski embodying the means of the present invention.
  • FIG. 2 is an enlarged cross-section taken on line 22 of FIG. 1, indicating one position of a stiffener.
  • FIG. 3 is a view similar to FIG. 2, showing the stiffener in alternative position.
  • FIG. 4 is an end view on an enlarged scale, showing the construction of the variable stiffener.
  • FIG. 5 is a side elevation of a ski incorporating the invention in modified form.
  • FIG. 6 is an enlarged cross-section taken on line 66 of FIG. 5.
  • FIG. 7 is a side elevation similar to FIG. 1, illustrating a modification.
  • FIG. 8 is a fragmental perspective view of a modified form of stiffener.
  • the reference character 10 indicates the body of a ski, usually constructed of wood, metal; or plastic, or a combination thereof, and having a forward end 12 and a rear end 14.
  • the body of the ski may be from 2 to 8 feet long, and has opposite side edges 16. In crosssection, the ski body may "be substantially rectangular as shown.
  • the underface 18 of the 'body may be provided with one or more longitudinal grooves 20, in accordance with common practice.
  • a ski constructed as above described will possess an inherent flexibility and resiliency in a plane perpendicular to underface 18 and including the major axis of the ski body.
  • Such flexibility and resiliency are to be controlled and rendered variable according to the will of the user.
  • the means employed for the purpose may be referred to as a variable stiffener.
  • variable stiffener or compensator may comprise one or more flat metal bars or ribbons 22 of considerable length, having a width dimension which exceeds substantially the thickness of the bar or ribbon.
  • the bar has opposite faces 24 of major area or extent, and a pair of parallel edges 26 which are of minor areas, relatively.
  • the bars by preference are formed of rolled or wrought steel.
  • the bar or ribbon will have high flexibility if bent in a direction perpendicular to width surface 24, however, if bent in the direction perpendicular to the thickness surface 26, the bar or ribbon will have relatively low flexibility.
  • a plurality of bars 26 may be disposed flatwise, with the ends thereof coinciding, and between the faces of the bars may be interposed a slick shim 28 having lubricating qualities.
  • a shim may be :formed of a material of the class of Teflon, and may be dimensioned in correspondency with the dimensions of a face 24. The shim will of course minimize friction between the innermost faces of the bars, whenever the bars are flexed or bowed.
  • Similar shims or cover elements 30 may overlie the outer faces of the bars.
  • the bars and shims may be enclosed within a tubular elongate sheath or casing 32 which is coextensive with the length of the bars and shims.
  • the sheath or casing is preferably formed of Teflon or an equivalent self-lubricating material.
  • the spaces between the outer faces of shims 3030 and the inner face of the sheath may be packed with a dense filler material 34, such as hard but pliable rubber, which will tend to reinforce and retain the cylindrical form of the sheath.
  • the body may be constructed with a longitudinal bore or channel 36, the axis of which may be parallel to or in coincidence with the major axis of the ski body.
  • Such bore, or channel is to receive the stiffener unit with sufficient clearance provided, that the stiffener unit may be rocked or rotated axially therein.
  • the unit may be provided with a rigid lever 38 securely fixed to the unit and extended laterally therefrom. Lever 38 is to be accessible for manual actuation, preferably at the upper face 40 of the ski body.
  • stiffener units are shown exposed upon the upper face 40 of the ski body, and held in place thereon by means of a series of brackets or eyelets 42 which are screwed or otherwise fixed at 44 to the body.
  • Each stiffener unit is rotatable within the brackets or eyelets, within limits as indicated at the right and left sides of FIG. 6, by means of a lever 38.
  • FIG. 6 shows the application of two identical stiffener units to the ski body, it is to be understood that a single unit may suffice in most instances. In some cases two or more stiffener-s may be desirable.
  • the stiffeners of course extend in parallelism with the major axis of the ski body.
  • actuating lever 38 is shown applied to a connector 46, which joins the meeting ends of two axially aligned stiffening units installed in the ski body. It should be understood, however, that a single unit might as well be incorporated in the ski body, with lever 38 affixed intermediate the ends thereof, or at any desired location along the length of the unit.
  • FIG. 7 may be quite similar to FIG. 1, with the exception that stiffeners indicated at 46 and 48 are installed in the ski body independently of one another, each having its own adjusting lever 38.
  • This construction makes possible a selective stiffening of the forward portion of the ski body to a different degree than the rear portion thereof.
  • Stiifeners 46 and 48 may be axially aligned one with the other, or in the alternative, they may be disaligned or offset one to the other.
  • the forward and rear portions of the ski body may each embrace more than one stiffener, if desired.
  • the simplified form of stiffener illustrated by FIG. 8, may comprise simply a bar or ribbon 22 like that of FIG. 4, without the application of any filler material 34 or spacing shims.
  • the bar or ribbon of FIG. 8 may support, at intervals along its length, a series of cylindrical bearing members 50 adapted for rotation with the bar or ribbon.
  • the bearing members may be dimensioned for reception in brackets such as 42 of FIG. 6, with such clearance as is necessary to permit rotational adjustment of the bar or ribbon for varying the stiffness of the ski body.
  • FIG. 8 may be applied also in the manner of FIGS.'1 and 7 with or without the use of a tubular sheath or casing such as 32. That is, the FIG. 8 structure may be rotationally supported within a longitudinal bore or channel such as 36 formed in the ski body, with or without the aid of a sheath or casing 32.
  • the bearing members 50 may be formed of any suitable material capable of supporting the bar or ribbon 22, and need not necessarily be of Teflon though this material is found very satisfactory for the purpose.
  • an elongate substantially fiat body possessed of inherent bendability mainly in one direction only
  • an elongate stiffener including an elongate substantially flat member possessed of inherent bendability mainly in one direction only
  • means carried by said body for supporting said member for rotational adjustment, said member extending longitudinally of said body.
  • an elongate substantially flat body possessed of inherent bendability in one direction and substantial rigidity in an opposite direction
  • an elongate substantially flat compensating member possessed of inherent bendability in one direction and substantial rigidity in an opposite direction
  • means carried by said body for supporting said compensating member for rotational adjustment, said member extending longitudinally of said eluding an elongate substantially flat member possessed of inherent bendability in one direction and inherent substantial rigidity in a transverse direction
  • means associated with the ski body for supporting the stiffener lengthwise thereon for rotational adjustment, to dispose the plane of bendability of the stiffener member at selected angles relative to the mean plane of the ski body, for varying flexation of the ski body in the direction of bendability thereof.
  • ski body includes an elongate passageway extending lengthwise thereof to accommodate the length of the stiffener; and means on the stiffener exposed exteriorly of the passageway, for manipulating the stiffener to the selected rotated positions aforesaid.
  • bracket means upstanding upon one face of the ski body adapted to embrace the stiffener, the stiffener being adjustable rotationally relative to the bracket means, for disposing the stiffener member at the selected angles aforesaid.
  • An adjustable ski construction comprising in combination: a substantially flat elongate body possessed of inherent bendability in one direction and inherent substantial rigidity in a transverse direction, an elongate stiffener comprising an elongate tubular casing having a major axis, a plurality of elongate flat and thin bars disposed in parallelism within the casing lengthwise thereof adjacent to the major axis, said bars each being possessed of inherent bendability in one direction and inherent substantial rigidity in a transverse direction, means spacing a flat face of one bar from the flat face of another bar, with said fiat faces in parallelism within the casing, a pliable filler material intermediate the bars and the adjacent inner wall of the tubular casing, and means carried by the ski body for supporting said casing lengthwise of the ski body for rotational adjustment, whereby the bars may be rotated in unison with the casing from a position at which the planes of the bars are parallel to the mean plane of the ski body, to other positions at which the planes of the bars meet the
  • ski body includes an elongate passageway extending lengthwise thereof to accommodate the length of the stiffener, and means on the stiffener casing exposed exteriorly of the passageway, for manipulating the casing and bars to the selected rotated positions aforesaid.
  • bracket means upstanding upon one face of the ski body adapted to embrace the casing of the stiffener, the casing being adjustable rotationally relative to the bracket means, for disposition of the easing and bars to the selected rotated positions aforesaid.
  • a substantially flat elongate body possessed of inherent bendability in one direction and inherent substantial rigidity in a transverse direction, said elongate body having forward and rear end portions; an elongate stiffener for the forward portion, and an elongate stiffener for the rear portion of said body, said stiffeners each including an elongate substantially fiat member possessed of inherent bendability in one direction and inherent substantial rigidity in a transverse direction; means associated with the body for individually supporting the stiffeners lengthwise thereon for individual rotational adjustment, to dispose the plane of bendability of each stiffener member at selected angles relative to the mean plane of the body, for varying flexation of the forward and rear portions of the body in the direction of bendability thereof.
  • a ski body and a stiffener operatively connected therewith and comprising an elongate substantially flat bar disposed longitudinally thereof and possessed of inherent bendability in one direction and inherent substantial rigidity in a transverse direction, and a plurality of cylindrical bearing members disposed along said bar at spaced locations.

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  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US399525A 1964-09-28 1964-09-28 Ski construction and method for varying the flexibility thereof Expired - Lifetime US3300226A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US399525A US3300226A (en) 1964-09-28 1964-09-28 Ski construction and method for varying the flexibility thereof
DE19651478168 DE1478168A1 (de) 1964-09-28 1965-08-25 Laenglicher Koerper,insbesondere Ski,und Verfahren zur AEnderung seiner Biegsamkeit
AT800765A AT281644B (de) 1964-09-28 1965-09-01 Ski mit in Längsrichtung verlaufender Vorrichtung zur Änderung der Biegsamkeit des Skis
CH1328765A CH442104A (fr) 1964-09-28 1965-09-27 Procédé pour faire varier la flexibilité d'un ski et dispositif pour sa mise en oeuvre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US399525A US3300226A (en) 1964-09-28 1964-09-28 Ski construction and method for varying the flexibility thereof

Publications (1)

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US3300226A true US3300226A (en) 1967-01-24

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US399525A Expired - Lifetime US3300226A (en) 1964-09-28 1964-09-28 Ski construction and method for varying the flexibility thereof

Country Status (4)

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US (1) US3300226A (de)
AT (1) AT281644B (de)
CH (1) CH442104A (de)
DE (1) DE1478168A1 (de)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3398968A (en) * 1965-02-26 1968-08-27 Mutzhas Maximilian Friedrich Ski having tensioning means to change the flexibility of the ski
US3537717A (en) * 1968-11-29 1970-11-03 Minnesota Mining & Mfg Damped ski and method of making
US4221400A (en) * 1978-11-08 1980-09-09 Powers John T Method and apparatus for selectively adjusting the stiffness of a ski
US4300786A (en) * 1979-12-19 1981-11-17 Johnson Wax Associates Snow ski with adjustable camber
US4556237A (en) * 1984-02-22 1985-12-03 Olin Corporation Alpine ski with selective reinforcement
US4577886A (en) * 1984-07-26 1986-03-25 Chernega John O Adjustable flex ski
US4592567A (en) * 1982-10-19 1986-06-03 Caber Italia S.P.A. Modifiable stiffness ski
US4592568A (en) * 1984-07-23 1986-06-03 Priskich Damir R Ski boot mounting structure for facilitating monoskiing on snow
US4696487A (en) * 1985-10-07 1987-09-29 Girard Donald A Ski which is stiff in torsion and relatively weak in beam
US4706985A (en) * 1984-02-22 1987-11-17 Tristar Sports Inc. Alpine ski with selective reinforcement
US4895388A (en) * 1988-05-17 1990-01-23 Richmond William D Pair of skis
US5803478A (en) * 1995-06-07 1998-09-08 Gavalis; Richard Clifford Ski
US5855389A (en) * 1996-01-30 1999-01-05 K-2 Corporation Torsionally reinforced snowboard
US5984343A (en) * 1997-04-08 1999-11-16 Robert J. Harrington Sliding apparatus having adjustable flexion and torsion characteristics
US6086084A (en) * 1995-06-02 2000-07-11 Hunter Douglas Industries B.V. Reinforced elongate metal body
US6113508A (en) * 1998-08-18 2000-09-05 Alliance Design And Development Group Adjusting stiffness and flexibility in sports equipment
US6257997B1 (en) 1999-08-18 2001-07-10 Alliance Design And Development Group Adjusting stiffness and flexibility in sports equipment
US20050206128A1 (en) * 2004-02-10 2005-09-22 Skis Rossignol S.A. Crosscountry ski
GB2414649A (en) * 2004-06-02 2005-12-07 Sarah Emily Clark Adjustable footwear
US20060091633A1 (en) * 2001-10-19 2006-05-04 Keith Meader Skate board with wear resisting means
US20060122013A1 (en) * 2003-01-27 2006-06-08 Dodge David J Outer tubular reinforcement member
US7140398B2 (en) 2002-01-28 2006-11-28 Alliance Design And Development Group, Inc. Sports equipment having a tubular structural member
US20070108733A1 (en) * 2005-11-16 2007-05-17 Tobias Heil Snow glide board and shell element for a snow glide board
US20070182129A1 (en) * 2004-11-23 2007-08-09 Wilson Anton F Suspension System for a Ski
WO2008009263A3 (de) * 2006-07-18 2008-04-03 Marker Voelkl Int Gmbh Trimmvorrichtung für schneegleitbretter, insbesondere für ski sowie schneegleitbrett mit wenigstens einem einen kanal bildenden hohlprofil
US20090160143A1 (en) * 2007-12-21 2009-06-25 Pluto Technologies, Inc. Skateboard Deck and Spring-Based Truck
US20090189370A1 (en) * 2008-01-25 2009-07-30 Salomon S.A.S. Alpine Ski with an Adjustment Arrangement
US20100194076A1 (en) * 2005-02-16 2010-08-05 Anton F. Wilson Snowboards
US20100320731A1 (en) * 2004-11-23 2010-12-23 Wilson Anton F Ski With Suspension
US9305120B2 (en) 2011-04-29 2016-04-05 Bryan Marc Failing Sports board configuration
US9950242B2 (en) 2015-06-19 2018-04-24 Anton F. Wilson Automatically adaptive ski
US10099108B2 (en) 2016-06-20 2018-10-16 International Business Machines Corporation Dynamic rigidity mechanism
US10286288B1 (en) * 2015-12-29 2019-05-14 Alpine Radius Control Technologies, LLC Torsional stabilizer for skis

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT376890B (de) * 1983-02-02 1985-01-10 Watschinger Gerhard Dr Stabilisierungseinrichtung fuer skier
DE3564376D1 (de) * 1984-02-10 1988-09-22 Tmc Corp Ski de fond
AT383495B (de) * 1984-05-18 1987-07-10 Amf Sport Freizeitgeraete Ski, insbesondere langlaufski
DE8701008U1 (de) * 1987-01-22 1987-03-05 Fischer, Herwig, 5144 Wegberg Ski
US20090255149A1 (en) * 2003-12-10 2009-10-15 Marco Rigat Multifunctional telemark boot
AT7659U3 (de) * 2004-11-30 2006-05-15 Paul Ornetsmueller Ski
FR2948290A1 (fr) * 2009-07-22 2011-01-28 Dominique Vinconneau Engin de sport dont la deformation elastique est controlable par des moyens de controle deportes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB146568A (en) * 1919-03-18 1920-06-18 Robert Ayton Improvements in or relating to metal springs
US2258046A (en) * 1940-05-24 1941-10-07 Clement Manufacture Enregistre Ski
FR1118857A (fr) * 1955-01-05 1956-06-12 Perfectionnements aux skis
US2918293A (en) * 1957-10-24 1959-12-22 Tavi Felix Ski having tensioning means

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB146568A (en) * 1919-03-18 1920-06-18 Robert Ayton Improvements in or relating to metal springs
US2258046A (en) * 1940-05-24 1941-10-07 Clement Manufacture Enregistre Ski
FR1118857A (fr) * 1955-01-05 1956-06-12 Perfectionnements aux skis
US2918293A (en) * 1957-10-24 1959-12-22 Tavi Felix Ski having tensioning means

Cited By (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3398968A (en) * 1965-02-26 1968-08-27 Mutzhas Maximilian Friedrich Ski having tensioning means to change the flexibility of the ski
US3537717A (en) * 1968-11-29 1970-11-03 Minnesota Mining & Mfg Damped ski and method of making
US4221400A (en) * 1978-11-08 1980-09-09 Powers John T Method and apparatus for selectively adjusting the stiffness of a ski
US4300786A (en) * 1979-12-19 1981-11-17 Johnson Wax Associates Snow ski with adjustable camber
US4592567A (en) * 1982-10-19 1986-06-03 Caber Italia S.P.A. Modifiable stiffness ski
US4706985A (en) * 1984-02-22 1987-11-17 Tristar Sports Inc. Alpine ski with selective reinforcement
US4556237A (en) * 1984-02-22 1985-12-03 Olin Corporation Alpine ski with selective reinforcement
US4592568A (en) * 1984-07-23 1986-06-03 Priskich Damir R Ski boot mounting structure for facilitating monoskiing on snow
US4577886A (en) * 1984-07-26 1986-03-25 Chernega John O Adjustable flex ski
US4696487A (en) * 1985-10-07 1987-09-29 Girard Donald A Ski which is stiff in torsion and relatively weak in beam
US4895388A (en) * 1988-05-17 1990-01-23 Richmond William D Pair of skis
US6086084A (en) * 1995-06-02 2000-07-11 Hunter Douglas Industries B.V. Reinforced elongate metal body
US6409183B1 (en) 1995-06-02 2002-06-25 Geert Wemmenhove Reinforced elongate metal body
US5803478A (en) * 1995-06-07 1998-09-08 Gavalis; Richard Clifford Ski
US5855389A (en) * 1996-01-30 1999-01-05 K-2 Corporation Torsionally reinforced snowboard
US5984343A (en) * 1997-04-08 1999-11-16 Robert J. Harrington Sliding apparatus having adjustable flexion and torsion characteristics
US6113508A (en) * 1998-08-18 2000-09-05 Alliance Design And Development Group Adjusting stiffness and flexibility in sports equipment
US6257997B1 (en) 1999-08-18 2001-07-10 Alliance Design And Development Group Adjusting stiffness and flexibility in sports equipment
US8002296B2 (en) * 2001-10-19 2011-08-23 Keith Meader Skate board with wear resisting means
US20060091633A1 (en) * 2001-10-19 2006-05-04 Keith Meader Skate board with wear resisting means
US7140398B2 (en) 2002-01-28 2006-11-28 Alliance Design And Development Group, Inc. Sports equipment having a tubular structural member
US20060122013A1 (en) * 2003-01-27 2006-06-08 Dodge David J Outer tubular reinforcement member
US7726346B2 (en) * 2003-01-27 2010-06-01 Doble William C Outer tubular reinforcement member
US20050206128A1 (en) * 2004-02-10 2005-09-22 Skis Rossignol S.A. Crosscountry ski
US7360782B2 (en) * 2004-02-10 2008-04-22 Skis Rossignol S.A. Crosscountry ski
GB2414649A (en) * 2004-06-02 2005-12-07 Sarah Emily Clark Adjustable footwear
US20070182129A1 (en) * 2004-11-23 2007-08-09 Wilson Anton F Suspension System for a Ski
US8794658B2 (en) 2004-11-23 2014-08-05 Anton F. Wilson Suspension system for a ski
US20100320731A1 (en) * 2004-11-23 2010-12-23 Wilson Anton F Ski With Suspension
US7607679B2 (en) * 2004-11-23 2009-10-27 Anton F. Wilson Suspension system for a ski
US20100038884A1 (en) * 2004-11-23 2010-02-18 Anton Dynamics, Inc. Suspension System for a Ski
US20100194076A1 (en) * 2005-02-16 2010-08-05 Anton F. Wilson Snowboards
US20070108733A1 (en) * 2005-11-16 2007-05-17 Tobias Heil Snow glide board and shell element for a snow glide board
US8002304B2 (en) * 2005-11-16 2011-08-23 Marker Völkl International GmbH Snow glide board and shell element for a snow glide board
US20110204585A1 (en) * 2005-11-16 2011-08-25 Tobias Heil Snow glide board and shell element for a snow glide board
WO2008009263A3 (de) * 2006-07-18 2008-04-03 Marker Voelkl Int Gmbh Trimmvorrichtung für schneegleitbretter, insbesondere für ski sowie schneegleitbrett mit wenigstens einem einen kanal bildenden hohlprofil
US7581739B2 (en) * 2007-12-21 2009-09-01 Pluto Technologies, Inc. Skateboard deck and spring-based truck
US20090160143A1 (en) * 2007-12-21 2009-06-25 Pluto Technologies, Inc. Skateboard Deck and Spring-Based Truck
US20090189370A1 (en) * 2008-01-25 2009-07-30 Salomon S.A.S. Alpine Ski with an Adjustment Arrangement
US8172250B2 (en) * 2008-01-25 2012-05-08 Salomon S.A.S. Alpine ski with an adjustment arrangement
US9526970B1 (en) 2011-04-29 2016-12-27 Bryan Marc Failing Sports board configuration
US9305120B2 (en) 2011-04-29 2016-04-05 Bryan Marc Failing Sports board configuration
US9884244B1 (en) 2011-04-29 2018-02-06 Bryan Marc Failing Sports board configuration
US10471333B1 (en) 2011-04-29 2019-11-12 Bryan Marc Failing Sports board configuration
US11285375B1 (en) 2011-04-29 2022-03-29 Bryan Marc Failing Sports board configuration
US11724174B1 (en) 2011-04-29 2023-08-15 Bryan Marc Failing Sports board configuration
US12296251B1 (en) * 2011-04-29 2025-05-13 Bryan Marc Failing Sports board configuration
US9950242B2 (en) 2015-06-19 2018-04-24 Anton F. Wilson Automatically adaptive ski
US10933296B2 (en) 2015-06-19 2021-03-02 Anton F. Wilson Automatically adaptive ski
US10286288B1 (en) * 2015-12-29 2019-05-14 Alpine Radius Control Technologies, LLC Torsional stabilizer for skis
US10099108B2 (en) 2016-06-20 2018-10-16 International Business Machines Corporation Dynamic rigidity mechanism

Also Published As

Publication number Publication date
AT281644B (de) 1970-05-25
CH442104A (fr) 1967-08-15
DE1478168A1 (de) 1970-07-02

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