US3921994A - Split-structure skis - Google Patents

Split-structure skis Download PDF

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Publication number
US3921994A
US3921994A US466469A US46646974A US3921994A US 3921994 A US3921994 A US 3921994A US 466469 A US466469 A US 466469A US 46646974 A US46646974 A US 46646974A US 3921994 A US3921994 A US 3921994A
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United States
Prior art keywords
ski
binding portion
runners
runner
respect
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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
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US466469A
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English (en)
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Giuseppe Locati
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Individual
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Individual
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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
    • A63C5/02—Skis or snowboards collapsible; divided
    • 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
    • A63C5/16—Devices enabling skis to be used whilst held in a particular configuration with respect to each other, e.g. for training purposes
    • 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

Definitions

  • the runners are linked to the binding portion by elastically reacting links so that each runner can be vertically shifted with respect to the other runner and vice versa.
  • the elastic reaction can be provided by a hydraulic fluid or a mechanical linkage.
  • the skis permit to hold the path as desired if the upward edges press the snow with a sufficient force: as a matter of fact the ski held with its sole entirely resting on the snow with a uniform pressure could not afford a sufficient hold on the sides, and would thus skid sideways.
  • the skier prevents this possibility by applying his weight on the edge which is upwards with an appropriate posture of the body and a correct action of the legs.
  • a ski which is not guided to go along a planar rectilinear path acts upon the snow with one of its edges: in fact, these are formed by steel strips to withstand the wear and to get a good hold on the snow.
  • the present invention has the purpose of improving the resistance of a ski to the sideways skid so as to permit a more convenient directional control by the skier.
  • a ski comprises a binding portion to which the ski boot is to be fastened, and a sliding portion, formed by at least two runners placed side by side and connected to the binding portion with links which allow the relative motion of at least the central parts of the runners.
  • FIGS. 1 and 2 are general diagrammatical views, in elevation and in plan view, respectively, of a ski ac-- cording to the invention.
  • FIG. 3 is a plan view of a detail of the ski of FIG. 1.
  • FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. 3.
  • FIG. 5 is a cross-sectional view taken along the line VV of FIG. 4.
  • FIGS. 6 and 7 are a plan view and an elevational view, respectively, of a different detail of the ski of FIG. 1
  • FIG. 8 is a view similar to that of FIG. 3, and shows a constructional modification of a detail of the ski, and
  • FIG. 9 is a cross-sectional view taken along the line IX-IX of FIG. 8.
  • the ski as shown in FIGS. 1 and 2 comprises two side-by-side runners 10 and 11, connected by couplings l2 and 13 to a plate 14. On the latter, a ski boot 16 is fastened with any conventional ski-binding 15.
  • the binding portion as generally shown at 12 is better shown in FIGS. 3, 4 and 5. It comprises a base block 17 to which a plate 14 is hinged at 18. Within the block cylindrical seats 19 and 20 are formed in which pistons 21 and 22 are movable, to whose stems 23 and 24 are locked plates 25 and 26, affixed with screws 27 to the runners 10 and 11. The chambers as defined by the pistons 21 and 22 within the respective seats 19 and 20 are 2 filled with a fluid and connected to one another by a duct 28, whose aperture can be throttled by an adjusting screw 29.
  • the unit 13 is the mirror image of the unit 12 so that it will not be described in detail.
  • the runners 10 and 11 are linked to one another in the vicinity of their front ends by a sliding coupling: to the runner 10 an angle iron 30 is applied, which carries a head 31 slidable within the guideway 32 as affixed to the runner 11.
  • FIGS. 4 and 5 show the trim as taken by the ski when it goes along an oblique course downhill; the profile of the ground is diagrammatically shown at 33.
  • the additional link between the runners, as formed by the head 31 freely slidable within the guideway 32, allows a parallel movement of the runners, but prevents the ski tips from spreading apart: this link, which is not essential as itself, increases both the reliability and the stability of the path of the ski, even on very irregular surfaces.
  • FIG. 8 There is shown a linking unit 112, wholly similar to the unit 12 of FIG. 4 and similar parts are indicated with the same reference numeral to which the FIG. 1 is applied as a prefix.
  • two sliders 122 and 123 are movable in seats 1 19 and and carry pins and 141 which engage slots 142 and 143 of the lever 144, freely oscillable at 145.
  • rocker 144 fulfils the task of the fluid contained in the seats 19 and 20 of the unit 12.
  • the damping effect as obtained with the throttling of also mechanisms can be considered, which perform a motion of the runners which is not rigorously parallel, neither between the two runners, nor between the runners and the plate 14.
  • a mechanism can be provided which arranges the runners, when they are vertically staggered, parallel to one another but lying with their soles on planes which are not parallel to the plane containing the plate 14. By so doing, it becomes possible to vary the posture of the edge which is intended to rest on the ground, until obtaining an optimum value of path holding.
  • the ski has been described as to its general structure according to the invention. However, constructional details common to the conventional skis have not been described: for example each of the skis could have at the sole edges metal strips to make a biting edge: the structure and the materials which make up the runners can then be those which are used in the conventional ski making art.
  • a ski as described comprises two side-byside runners: if it is deemed appropriate, a ski can be made which is entirely similar but having more than two runners, for example three.
  • An advantageous embodiment of such a ski comprises for example three hydraulic rams moving in the bodies 12 and 13, whose working chambers are interconnected by ducts: also in this case purely mechanical linkages can be provided.
  • hinges 18 have proven to be adapted, in the practice, to prevent the stiffening of the central portion of the ski, due to the superposition of the runners and the plate 14, thus impeding that a rigid parallelogram might be formed: however, appropriate degrees of freedom as left in the connection between the plate 14 and the units 12 and 13 and between these latter and the runners and 11, will enable the same result to be obtained with different means.
  • a ski comprising a binding portion, to which a ski boot of a skier is intended to be fastened, and a sliding runners to move with respect to each other perpendicularly to the sliding plane of the sliding body.
  • a ski according to claim 2 wherein said connections permit a mutual relative vertical movement of the mutually connected parts.
  • said linkage means comprises pistons located on an upper portion of each of said runners, said pistons being located adjacent said binding portion and corresponding seats integral with said binding portion, each of said pistons being movably positioned within said seats so as to de- 7 fine a compression chamber therein, said compression chamber formed by each piston in its seat being occupied by a fluid and communicating with the compression chamber formed in its seat by the corresponding piston of the other runner.
  • An improved ski comprising: individual first and second sliding body portions each having a bottom surface for slidably engaging snow and defining a sliding plane, a binding portion to which a boot of a skier can be fastened, linkage means for individually connecting each of said first and second sliding body portions to said binding portion so that a slot is formed between said first and second sliding body portions, said first and second portions being movable with respect to each other and perpendicularly with respect to the sliding plane.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
US466469A 1973-05-02 1974-05-02 Split-structure skis Expired - Lifetime US3921994A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT23631/73A IT987600B (it) 1973-05-02 1973-05-02 Sci a struttura articolata

Publications (1)

Publication Number Publication Date
US3921994A true US3921994A (en) 1975-11-25

Family

ID=11208718

Family Applications (1)

Application Number Title Priority Date Filing Date
US466469A Expired - Lifetime US3921994A (en) 1973-05-02 1974-05-02 Split-structure skis

Country Status (8)

Country Link
US (1) US3921994A (de)
JP (1) JPS5041634A (de)
AT (1) AT330626B (de)
CH (1) CH571347A5 (de)
DE (1) DE2417156A1 (de)
ES (1) ES426068A1 (de)
FR (1) FR2227883B3 (de)
IT (1) IT987600B (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027895A (en) * 1975-01-30 1977-06-07 Hans Evald Larsson Cross-country ski having alternate sliding and holding surfaces
US4340241A (en) * 1980-04-14 1982-07-20 Crocket Danial E Ski
US4449735A (en) * 1981-08-28 1984-05-22 Mcdougall David A Skiing apparatus
US4565386A (en) * 1984-02-01 1986-01-21 Design Standards Corporation Ski
US4647062A (en) * 1983-11-10 1987-03-03 Mcdougall David A Skiing apparatus
US5558354A (en) * 1995-02-23 1996-09-24 Lion; Ronald K. Combination skis and mounting plate assembly
FR2794374A1 (fr) * 1999-06-02 2000-12-08 Roumen Kaltchev Ski a geometrie variable
US20040119264A1 (en) * 2002-12-16 2004-06-24 Skis Rossignol S.A. Alpine ski
US20070296181A1 (en) * 2006-01-26 2007-12-27 Skis Rossignol Sas Skiing device including two supplemental elements held together by a connecting structure
US20080185816A1 (en) * 2007-02-02 2008-08-07 Atomic Austria Gmbh Ski or snowboard with a means for influencing its geometry and a method of producing it
US20080185818A1 (en) * 2007-02-02 2008-08-07 Atomic Austria Gmbh Ski or snowboard with a plate-type force-transmitting element
US20080185815A1 (en) * 2007-02-02 2008-08-07 Atomic Austria Gmbh Ski or snowboard with a means for influencing its geometry
US20090261544A1 (en) * 2007-12-21 2009-10-22 Atomic Austria Gmbh End piece for the front or rear end of a ski or snowboard and a ski fitted therewith or a snowboard fitted therewith
US11065529B2 (en) 2016-04-22 2021-07-20 Jan Peter Ortwig Method of and apparatus for changing a shape of a gliding surface of a gliding device
US11590406B2 (en) * 2017-04-13 2023-02-28 Worcester Polytechnic Institute Multi-mode load absorbing ski binding

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3808878A1 (de) * 1988-03-17 1988-12-15 Rolf Backhauss Skier mit besonderheiten
CH676932A5 (de) * 1988-10-04 1991-03-28 Ueli Bettenmann
FR2716811B1 (fr) * 1994-03-07 1996-08-02 Francois Roux Dispositif permettant d'exercer une pression constante sur toute la surface d'appui de la chaussure sur le ski.
US6523851B1 (en) 2000-03-21 2003-02-25 The Burton Corporation Binding mechanism for a touring snowboard
FR2848465A1 (fr) 2002-12-16 2004-06-18 Rossignol Sa Ski alpin

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1499448A (en) * 1922-07-03 1924-07-01 Wilber D Crawford Skate
US3260532A (en) * 1965-04-02 1966-07-12 Johan G F Heuvel Ski binding mounting and runner construction
US3549162A (en) * 1968-11-27 1970-12-22 Harold Y Coutts Ski construction
US3627349A (en) * 1969-10-15 1971-12-14 Jack T Barry Skiing device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1499448A (en) * 1922-07-03 1924-07-01 Wilber D Crawford Skate
US3260532A (en) * 1965-04-02 1966-07-12 Johan G F Heuvel Ski binding mounting and runner construction
US3549162A (en) * 1968-11-27 1970-12-22 Harold Y Coutts Ski construction
US3627349A (en) * 1969-10-15 1971-12-14 Jack T Barry Skiing device

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027895A (en) * 1975-01-30 1977-06-07 Hans Evald Larsson Cross-country ski having alternate sliding and holding surfaces
US4340241A (en) * 1980-04-14 1982-07-20 Crocket Danial E Ski
US4449735A (en) * 1981-08-28 1984-05-22 Mcdougall David A Skiing apparatus
US4647062A (en) * 1983-11-10 1987-03-03 Mcdougall David A Skiing apparatus
US4565386A (en) * 1984-02-01 1986-01-21 Design Standards Corporation Ski
US5558354A (en) * 1995-02-23 1996-09-24 Lion; Ronald K. Combination skis and mounting plate assembly
FR2794374A1 (fr) * 1999-06-02 2000-12-08 Roumen Kaltchev Ski a geometrie variable
US20040119264A1 (en) * 2002-12-16 2004-06-24 Skis Rossignol S.A. Alpine ski
US7258360B2 (en) 2002-12-16 2007-08-21 Skis Rossignol S.A. Alpine ski
US20070296181A1 (en) * 2006-01-26 2007-12-27 Skis Rossignol Sas Skiing device including two supplemental elements held together by a connecting structure
US20080185816A1 (en) * 2007-02-02 2008-08-07 Atomic Austria Gmbh Ski or snowboard with a means for influencing its geometry and a method of producing it
US20080185818A1 (en) * 2007-02-02 2008-08-07 Atomic Austria Gmbh Ski or snowboard with a plate-type force-transmitting element
US20080185815A1 (en) * 2007-02-02 2008-08-07 Atomic Austria Gmbh Ski or snowboard with a means for influencing its geometry
US7900950B2 (en) * 2007-02-02 2011-03-08 Atomic Austria Gmbh Ski or snowboard with a means for influencing its geometry and a method of producing it
US7946608B2 (en) 2007-02-02 2011-05-24 Atomic Austria Gmbh Ski or snowboard with a plate-type force-transmitting element
US8020887B2 (en) 2007-02-02 2011-09-20 Atomic Austria Gmbh Ski or snowboard with a means for influencing its geometry
US20090261544A1 (en) * 2007-12-21 2009-10-22 Atomic Austria Gmbh End piece for the front or rear end of a ski or snowboard and a ski fitted therewith or a snowboard fitted therewith
US8052165B2 (en) * 2007-12-21 2011-11-08 Atomic Austria Gmbh End piece for the front or rear end of a ski or snowboard and a ski fitted therewith or a snowboard fitted therewith
US11065529B2 (en) 2016-04-22 2021-07-20 Jan Peter Ortwig Method of and apparatus for changing a shape of a gliding surface of a gliding device
US11590406B2 (en) * 2017-04-13 2023-02-28 Worcester Polytechnic Institute Multi-mode load absorbing ski binding

Also Published As

Publication number Publication date
JPS5041634A (de) 1975-04-16
ES426068A1 (es) 1976-09-16
CH571347A5 (de) 1976-01-15
FR2227883A1 (de) 1974-11-29
AT330626B (de) 1976-07-12
IT987600B (it) 1975-03-20
FR2227883B3 (de) 1977-03-04
ATA354974A (de) 1975-09-15
DE2417156A1 (de) 1974-11-14

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