FR2627994A1 - Ski with rollers for use without snow - has tubular beam with rollers at each end and boot binding on collars around beam - Google Patents

Abstract

The ski has a beam (1) which is tubular and circular in cross section. It has forks (11,19) at each end which support the rollers (12,20). The boot is held on the ski by a front plate (2), which has a normal ski binding, and a back plate (4), which is flat and has points (5) on it to hold the boot's heel. The plates are held on the ski by collars (6,7,9) which go round the beam. Their inclination is adjustable by rotating round this and they are fixed in position by screws. There are anti-vibration blocks inside the beam. USE - For practising skiing on ground without snow.

Description

() FRENCH REPUBLIC Publication no .: 2 627 994 (use only

  for NATIONAL INSTITUTE reproduction orders)

INDUSTRIAL PROPERTY

  D R É T N national registration 88 03742 PARIS

(Int CI4: A 63 C 5/00, 17/00.

  A1 PATENT APPLICATION

  Filing date: March 7, 1988. Q Applicant (s): TRITENNE Claude. - FR.

() Priority

(Inventor (s): Claude Tritenne.

  Date of public availability of the

  request: BOPI "Patents)> No. 36 of September 8, 1989.

  6 References to other national documents appearing

rented (Holder (s)

  Q Agent (s) Cabinet Germain and Maureau.

(Roller skiing.

  @ Roller ski with a longituent master beam

  dinale 1, two yokes 19, 11 front and rear, and two casters

, 12 carried by these yokes.

  The beam 1 is of circular section. The device 2, 4 for fixing and supporting the shoe is adjustable in inclination by rotation around this round bar 1. / ".v .. IN (o N oLO Sale of booklets at IMPRIMERIE NATIONALE. 27, rue of the Convention - 75732 PARIS CEDEX 15

SKI ON WHEELS

  The present invention relates to a roller ski, more

  especially intended for sports training on snow-free road

  accustomed to cross-country skiing on snow.

  A roller ski, for the practice of cross-country skiing on the road and in the absence of snow, is conventionally composed of a bar or longitudinal beam of rectangular section on which is fixed a cross-country ski binding entirely conventional, generally comprising a device for fixing the front - of the shoe, as well as a support plate of the front half of the sole of this shoe and a support plate of its heel. Depending on the case, these two support plates can

  be combined into a single support plate for the shoe sole

or a footrest plate.

  It has been found in use that this roller ski has some drawbacks which do not affect the cross-country ski intended for practice

  on snow. On the one hand, there is a deflection of the beam longitu-

  under the weight of the skier, so that the skis manage to scrape

  the ground, and sometimes they even break. On the other hand, in case of incli-

  born of the ski, when practicing the skater's step for example, the lower edge, right or left as the case may be, of the ski scrapes the ground, which causes rapid wear of the ski and represents a risk of falling for the skier. Anyway, we are further limited in lowering the center of gravity of the ski by this risk of scraping the ground, in position

ski slope or not.

  The invention aims to remedy these drawbacks. It relates for this purpose to a roller ski more particularly intended for the practice

  cross-country skiing without snow, this ski comprising a long main beam

  tudinal supporting the support and fixing assembly of the shoe, and comprising a first yoke at the front end of this longitudinal beam and a second yoke at the rear end of this same beam, these two yokes respectively supporting the caster front (or the front wheels) and the rear wheel (or the rear wheels) of the ski. This longitudinal beam is, in accordance with the invention, of circular section, and is therefore preferably constituted by a round tube. The support and fixing assembly of the boot is fixed to this round bar, which forms the main beam of the ski, by one or more fasteners, which grip this round bar so

  to be adjustable in inclination by rotation around it.

  The invention will be well understood, and its advantages and other characteristics.

  will emerge during the following description of an example not

  limiting the production of this roller ski, with reference to the dry drawing-

  attached material in which: Figure 1 is an overall perspective view of the roller ski Figure 2 is a view, in cross section along Il-Il of Figure 1, of one of the fasteners of the support plate of the part front of the shoe Figure 3 is a view, in cross section along 111-111 of Figure 1, of the attachment of the support plate of the heel of the shoe; Figure 4 shows, in partial section along IV-IV of Figure 1, the yoke and the rear wheel of this roller ski, with a variant drawn in phantom;

  Figure 5 is a partial longitudinal section of this roller ski-

  your; and Figure 6 shows an alternative embodiment of the yoke of the

figure 4.

  Referring to Figures I to 5, this roller ski is more particularly intended for the practice of cross-country skiing without snow, by

example on a snow-free road.

  It has a longitudinal main beam I which is made up of

  killed by a metal tube of circular section. The device for fixing and supporting the boot consists of: - a front support plate 2, which is flat and which carries a conventional device 3 for fixing the front of the cross-country ski boot; this plate 2 receives the front half of the front of the shoe; and - a rear support plate 4, which is flat, furnished with

  points 5, and which receives the heel of the shoe.

  The front plate 2 is secured to two fasteners 6,7 which enclose the tube 1, and which each consist of a collar tightened around the tube 1 by means of a screw 8 (FIG. 2). Likewise, the rear plate 5 is secured to a fastener 9 which encloses the tube 1 and which is constituted by another collar 9 tightened around the tube 1 and held in position relative to the latter by means of a screw. needle 10. These

  clamps allow easy longitudinal adjustment of the position of the fastener.

  As the fasteners 6, 7, 9 can, before blocking by the screws 8 and 10, rotate around the master rod 1, it is easy to adjust the angular position of the plates 2 and 5 relative to the horizontal, depending on example of the morphology of the skier's legs or his way of skiing. Figure 4 shows the method of fixing the rear yoke 11, which itself supports the rear caster 12. This yoke 11 is integral with an axial tube 13 which is capable of being fitted tightly into the end of the tube 1 Four holes 14 are provided in correspondence on the inner tube 13 and on the outer tube 1, and they receive

  fixing rivets (not shown).

  In dashed lines is shown a variant of the yoke 16, which has a wheel axle 17 raised relative to the axle 18 carried by the yoke 11, this axle 17 being located above the longitudinal axis of the main beam 1 This results in a lowering of the center of gravity of the ski compared to the conventional roller ski, this lowering being

  finally made possible by the rounded shape of the tube 1.

  Figure 4 shows the rear yoke. It is obvious that the front yoke 19 which carries the front wheel 20 is strictly identical, as can be seen moreover in FIG. 5. This FIG. 5 also shows that the inner part of the tube I is lined with anti-vibration blocks 21 , 22,23 which are respectively placed under the plate

  2, under the plate 4 at the rear of the tube 1, and at the front of this tube 1.

  The invention is of course not limited to the exemplary embodiment.

  tion which has just been described. The support plates 2 and 4 could be combined into one. The method of fixing the yokes 11 and 19 on the round tube I could be different: FIG. 6 shows for example a yoke 11 which is provided with a fixing tube 13 which encloses the tube I instead of being enclosed by that -this. The clamps for fixing the support plates can be all identical, - or be from another

  type as the two collars described as examples, etc ...

Claims (7)

  I - Roller ski, of the type comprising a longitudinal main beam (1) supporting the assembly (2,4) of support and fixing of the boot, and comprising a first yoke (19) at the front end of this longitudinal beam and a second yoke (11) at the rear end of this same beam, these two yokes supporting respectively the front caster (or casters) (20) and the caster (or casters)   rear (12) of the ski, characterized in that this main beam longitu-   dinal (1) is of circular section.   2 - Roller ski according to claim 1, characterized in   that this longitudinal beam (1) is tubular.   3 - Roller ski according to one of claims I or 2, character-   laughed in that the support and fixing assembly (2,4) of the boot is fixed to the round beam (1) by means of one or more fasteners (6, 7,9) which enclose this round bar (1) so as to be adjustable   tilting around it.   4 - Roller ski according to claim 3, characterized in that these fasteners (6,7,9) are constituted by collars provided with a   clamping (8) or blocking (10) member.   5 - Roller ski according to one of claims 1 to 4, character-   in that the front and rear yokes (16) are shaped so that the axes (17) of the front and rear casters are located above   of the longitudinal axis of the main beam (1).   6 - Roller ski according to one of claims I to 5, charac-   terized in that anti-vibration blocks (21,22,23) are introduced at   the inside of the round beam (1). 1/2 2627994 he ' FIG3 FIG1 2 F9G-6 z. "-, / 'Es.,' / SD . ^ .--- - - - - - 7-OI1: Ys 866ZZ9Z gV