EP0169185B1 - Ski à roulettes - Google Patents

Ski à roulettes Download PDF

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Publication number
EP0169185B1
EP0169185B1 EP85850241A EP85850241A EP0169185B1 EP 0169185 B1 EP0169185 B1 EP 0169185B1 EP 85850241 A EP85850241 A EP 85850241A EP 85850241 A EP85850241 A EP 85850241A EP 0169185 B1 EP0169185 B1 EP 0169185B1
Authority
EP
European Patent Office
Prior art keywords
ski
roller
hollow section
foot deck
wheel
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
EP85850241A
Other languages
German (de)
English (en)
Other versions
EP0169185A2 (fr
EP0169185A3 (en
Inventor
Sivert Höög
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.)
SAMHALL HOEGLAND
Original Assignee
SAMHALL HOEGLAND
Samhall Hogland
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 SAMHALL HOEGLAND, Samhall Hogland filed Critical SAMHALL HOEGLAND
Priority to AT85850241T priority Critical patent/ATE57309T1/de
Publication of EP0169185A2 publication Critical patent/EP0169185A2/fr
Publication of EP0169185A3 publication Critical patent/EP0169185A3/en
Application granted granted Critical
Publication of EP0169185B1 publication Critical patent/EP0169185B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • A63C5/035—Skis or snowboards with ground engaging rolls or belts
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00—Roller skates; Skate-boards
    • A63C17/04—Roller skates; Skate-boards with wheels arranged otherwise than in two pairs
    • A63C17/045—Roller skis

Definitions

  • the present invention relates to a roller ski including a ski body mounted on a forward and a rear wheel, a binding or attachment for a ski shoe (boot) being arranged between the wheels, close to the rear wheel.
  • ski-skating In skiing today, apart from the conventional poling and diagonal skiing, there is used to an ever-increasing extent so-called “ski-skating". This is pronounced to a high degree of ordinary ice skating, and is either done by toeing out with the ski tips, so-called “herringboning”, this technique mostly being used heretofore on upward slopes, or by toeing out with one ski only, resulting in that the other ski (hereinafter designated the “track ski”) is kept in the track, the other ski (hereinafter designated “the skate ski”) being toed out sideways, this manner of skiing being the one most prevalent of the two, and allowing the maintenance of greater speed with less effort than customary poling or diagonal skiing. This kind of skiing is most often done without so-called ground wax which also contributes to the ski working more lightly and quickly.
  • the track ski In snow skiing using single-sided toeing out of one ski, the track ski is down in the track or rut formed by earlier skiing and the transverse forces acting on the ski and urging it outtransversely are entirely taken up by the edges of the rut.
  • the track ski In a corresponding manner of skiing with roller skis, the track ski is also affected by transverse forces steering it outwards, and it must be returned to the travelling direction using a technique not found in the present snow skiing technique.
  • the foot on the skate ski is put down as near as possible to the heel on the track ski, the skate ski then crossing over the track ski, which is possible since the track ski is down in the rut at a depth which is greater than the height of the ski.
  • skate ski base In skiing with snow skis, customary in the technique in question, the skate ski base is angled to a considerable degree. If known roller skis are angled to the same amount, the roller fork mountings scrape against the ground, which means that the skier cannot train technically correctly and also that the fork mounting can dig into the ground and cause abrupt stoppage with a fall and a risk of injury.
  • roller ski It is attempted today, by such as the selection of materials, to make the roller skis in question as light as possible.
  • a roller ski is described in DE-A-28 23 152.
  • the roller ski comprises a ski body mounted on forward and rear wheels and it includes two parallel bars of solid cylindrical cross sections being connected with cross brac- ings and carrying a binding for the ski shoe close to the rear wheels.
  • the known roller ski is a rather stiff construction for taking up vertical and horizontal forces.
  • roller skis of today are dimensioned to completely take up both vertical and horizontal forces so that, for example, the positions of the wheels in the travelling direction will not be changed. They are often also implemented with a roll-back stop unnecessary for "ski skating” involving that wheel hub and shaft are made in strong steel. Altogether this makes the roller ski used at present about 3 times as heavy as the appropriate competition snow ski of today.
  • the object of the present invention is therefore to solve the above-mentioned problem in the difference between skiing with snow skis and skiing with roller skis, and particularly with reference to ski skating.
  • roller ski defined in claim 1.
  • the ski body By shaping the hollow section with a rectangular cross section with its short side downwards, the ski body will be laterally flexible for the skiing load. At the same time it supports mounting portions for the forward and rear wheels.
  • the carrying member is implemented such as to take up vertical forces to a greater extent than horizontal forces, it is suitable to use for it a rectangular hollow section with its short side downwards.
  • the inventive roller ski has been formed with only a half fork mounting for each of the forward and rear wheels.
  • the fork mountings of the roller ski are formed by the hollow section itself.
  • the lightness of the ski is enabled by using less material, since it does not need to be dimensioned for being straight when it takes up horizontal forces, and is intended to be laterally flexible, as well as not being provided in a basic embodiment with a roll-back stop not necessary for skate skiing.
  • the wheel hub can then be made in such as aluminium or plastics material.
  • the wheel shaft can be implemented in lighter material, e.g. with a steel core for carrying and assembly.
  • FIGS 1 and 2 illustrate one-sided toeing-out on snow with ordinary skis, one ski, the track ski 1, following the track or rut 2 in the snow. The other ski, the skate ski 3, is put down behind the skier in ski-skating so that it crosses over the other ski, as will be seen from Figure 1.
  • Figure 8 it will be seen how this crossing of the skis 1 and 3 is possible when skiing on snow, due to the track ski 1 lying deep in the rut 2.
  • roller skis implemented in accordance with the present invention, there is however obtained an action entirely corresponding to that carried out in the relevant snow skiing technique.
  • the roller ski in accordance with the present invention as will be more closely described in conjunction with Figures 10-13, is short and it has the binding or foot deck arranged in the immediate vicinity of the rear wheel.
  • the roller skier can thus train and ski in exactly the same way as is applicable to skiing on snow, as will be noted by comparing Figures 5 and 7 with Figures 1 and 2. It will thus be seen from Figure 5 that the skate ski 3 can be moved crosswise behind the track ski 1, the travelling movement and the application of effort corresponding to what is applicable with the crossing ski movement according to Figure 1. This is also apparent from the comparison of Figure 9 with Figure 8.
  • the reason that the track ski 1 during skiing on roller skis in accordance with the present invention follows the direction of travel 2' without the skier needing to take any corrective movements is primarily due to the lateral flexibility of the ski, as is exaggeratedly indicated in Figure 6.
  • the roller skis in accordance with the invention are namely formed to be laterally flexible. Another reason for the tracking property may be attributed to the journalling of the wheel and the implementation of the wheel.
  • the roller ski includes a ski body 10 mounted on a forward wheel 11 and a rear wheel 12.
  • the ski body 10 comprises a hollow body with a rectangular cross section with its short side downwards, as will be seen from Figure 14.
  • the hollow body thus has side walls 13 of greater extension than its upper and bottom walls 14, 15.
  • the upper wall 14 of the hollow body is formed with a foot deck 16,17.
  • the foot deck 16, 17 is centered about the longitudinal axis 20 of the ski body 10, and has fastenings 18 for bindings for the ski shoe (not shown).
  • the foot deck 16, 17 is arranged in the immediate vicinity of the rear wheel 12 and is further divided into a toe portion 16 and a heel portion 17, substantially for reducing the weight of the roller ski, but also so as not to constitute an obstacle to the above-mentioned lateral flexing ability.
  • the wheels 11, 12 are suspended by each a one-sided fork 19 being formed by the hollow body.
  • the hollow body is joggled so that the forks 19 are parallel to the rest of the hollow body.
  • the central axis of the wheels which is at right angles to their axes of rotation, is thus in register with the longitudinal axis 20 of the ski body 10.
  • FIG. 13 A second embodiment of the roller ski in accordance with the present invention is illustrated in Figures 13, 14 and 16. Elements which are the same as in the above-described first embodiment have been given the same reference numerals.
  • the illustrated second embodiment of the roller ski in accordance with the invention has a foot deck 16', 17' starting from the upper wall 14 of the hollow body in only one direction as will be seen from Figure 16.
  • the foot deck 16', 17' which is similarly divided into a toe portion 16' and a heel portion 17', thus has its longitudinal axis displaced parallel relative the longitudinal axis of the ski body in a direction towards the roller ski lying at its side in a roller ski pair.
  • FIG 17 illustrates the wheel shaft 21 made in a light material such as plastics or aluminium with a core 22, e.g. of steel.
  • the core 22 has the form of a screw or bolt which consists of, or reinforces the carrying properties of the wheel shaft 21 as well as fastening it to the ski body 10.
  • Through holes 33 have thus been made in the hollow section (the forks) side walls 13.
  • the screw or bolt-like core 22 is taken through the holes 23 and into the hollow wheel shaft 21, which has an interior thread 24 coacting with a thread 25 on the core 22.
  • the portion of the wheel shaft 21 facing towards one side wall 13 of the ski body 10 has a flange 26 of large diameter, forming a contact surface against the side wall 13 when the core 22 is threaded into the wheel shaft 21.
  • the wheel shaft 21 is intended to coact with a wheel 11 or 12.
  • the hub of the wheel 11, 12 is formed as a rim 27, as will be seen from Figure 12.
  • the rim 27 may be of plastics and form a relatively large inner cavity 28 in the wheel 11, 12 for keeping the weight of the wheel down.
  • the rim 27 carries a tire or a tread 29 of suitable form and pattern for roller skis.
  • the rim 27 is formed to carry ball or roller bearings 30 at the sides of the wheel 11, 12. These bearings 30 are mounted on the wheel shaft 21 and the wheel 11, 12 is fastened to the wheel shaft 21 with a spring clip (not shown) in the annular groove 31 at the end of the wheel shaft 21.

Landscapes

  • Rolls And Other Rotary Bodies (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Road Paving Structures (AREA)
  • Paper (AREA)
  • Dental Preparations (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Motorcycle And Bicycle Frame (AREA)

Claims (7)

1. Ski à roues comportant un corps de ski (10) monté sur des roues avant et arrière (11, 12), une fixation (16-18) pour une chaussure de ski montée entre lesdites roues avant et arrière et près de la roue arrière (12), caractérisé en ce que le corps de ski (10) comprend une section creuse de forme rectangulaire, les parois supérieure et inférieure (14, 15) de ladite section creuse étant plus étroites que la largeur d'une chaussure de ski normale, les parois latérales (13) ayant une extension supérieure aux dites parois supérieure et inférieure (14, 15), ladite section creuse supportant simultanément à des extrémités opposées des parties servant au montage (19; 19') des roues avant et arrière (11, 12), et la paroi supérieure (14) présentant une plate forme pour le pied (16, 17; 16', 17') prévue pour la chaussure de ski, laquelle plate forme est aussi large que la chaussure de ski et est faite d'un seul tenant avec la paroi supérieure (14) de la section creuse.
2. Ski à roues selon la revendication 1, caractérisé en ce que la plate forme pour le pied (16, 17; 16', 17') est divisée en une portion pour les doigts de pied (16, 16') et une portion pour le talon (17, 17').
3. Ski à roues selon la revendication 1, caractérisé en ce que la plate forme pour le pied (16, 17) est centrée autour de l'axe longitudinal (20) du corps de ski (10), la section creuse étant indentée à ses extrémités pour former lesdites fourches (19) excentriques par rapport à la section creuse et parallèles à celle-ci (figure 11).
4. Ski à roues selon la revendication 2, caractérisé en ce que la plate forme pour le pied (16', 17') s'étend depuis la paroi supérieure (14) de la section creuse (10) en direction de l'autre ski à roues d'une paire de skis, les roues avant et arrière (11, 12) étant montées sur le même côté de la section creuse que la plate forme pour le pied, ladite section creuse étant essentiellement rectiligne.
5. Ski à roues selon la revendication 1, caractérisé en ce que dans les parois latérales (13) de chacune des fourches (19; 19') formées par la section (10) creuse se trouve un trou débouchant (23) recevant un noyau (22) pour un arbre creux (21) servant d'essieu sur lequel sont supportées les roues avant et arrière correspondantes (11, 12).
6. Ski à roues selon la revendication 5, caractérisé en ce que l'arbre creux (21) est fait d'un matériau léger comme de l'aluminium ou du plastique et en ce que le noyau (22) fixé à la fourche (19; 19') se compose d'acier sous la forme d'une vis ou d'un écrou vissé dans l'arbre creux, qui est, pour ce faire, muni d'un filetage femelle (24).
7. Ski à roues selon la revendication 6, caractérisé en ce que chaque roue avant et arrière (11,12) comprend un moyeu (27) présentant un rebord, le moyeu portant des paliers (30) sur les côtés de la roue pour un arbre creux (21), et en ce qu'une cavité (28) est formée entre ces paliers à l'intérieur de la roue, la périphérie du rebord portant un pneu (29).
EP85850241A 1984-07-20 1985-07-17 Ski à roulettes Expired - Lifetime EP0169185B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85850241T ATE57309T1 (de) 1984-07-20 1985-07-17 Rollski.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8403809A SE455993B (sv) 1984-07-20 1984-07-20 Rullskida
SE8403809 1984-07-20

Publications (3)

Publication Number Publication Date
EP0169185A2 EP0169185A2 (fr) 1986-01-22
EP0169185A3 EP0169185A3 (en) 1987-10-28
EP0169185B1 true EP0169185B1 (fr) 1990-10-10

Family

ID=20356577

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85850241A Expired - Lifetime EP0169185B1 (fr) 1984-07-20 1985-07-17 Ski à roulettes

Country Status (7)

Country Link
EP (1) EP0169185B1 (fr)
JP (1) JPS61222470A (fr)
AT (1) ATE57309T1 (fr)
DE (1) DE3580071D1 (fr)
FI (1) FI852834A7 (fr)
NO (1) NO158852C (fr)
SE (1) SE455993B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194157B (en) * 1986-08-20 1990-01-10 Jerry Lin Two-wheeled combination roller skate-ski
AU642006B2 (en) * 1991-04-29 1993-10-07 Mark Stephen Atlee An improved grass-ski
US6241264B1 (en) * 1998-11-06 2001-06-05 Crosskate, Llc Steerable wheel assembly with damping and centering force mechanism for an in-line skate or roller ski

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8229185U1 (de) * 1983-03-31 Dsi-Sportartikel Gmbh, 8961 Weitnau Skiroller
US3767220A (en) * 1972-03-13 1973-10-23 R Peterson Foot worn two-wheeled vehicle
AT335321B (de) * 1975-05-27 1977-03-10 Nordin Per Henry Trocken- bzw. rollski
DE2817705A1 (de) * 1978-04-22 1979-10-31 Georg Dr Med Patzer Sommerski
DE2823152A1 (de) * 1978-05-26 1979-12-06 Skf Kugellagerfabriken Gmbh Roll-ski

Also Published As

Publication number Publication date
NO852845L (no) 1986-01-21
ATE57309T1 (de) 1990-10-15
DE3580071D1 (de) 1990-11-15
FI852834A0 (fi) 1985-07-19
NO158852B (no) 1988-08-01
FI852834L (fi) 1986-01-21
SE8403809L (sv) 1986-01-21
SE8403809D0 (sv) 1984-07-20
NO158852C (no) 1988-11-09
SE455993B (sv) 1988-08-29
EP0169185A2 (fr) 1986-01-22
JPS61222470A (ja) 1986-10-02
EP0169185A3 (en) 1987-10-28
FI852834A7 (fi) 1986-01-21

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