EP1556146B1 - Rollski - Google Patents
Rollski Download PDFInfo
- Publication number
- EP1556146B1 EP1556146B1 EP02788537A EP02788537A EP1556146B1 EP 1556146 B1 EP1556146 B1 EP 1556146B1 EP 02788537 A EP02788537 A EP 02788537A EP 02788537 A EP02788537 A EP 02788537A EP 1556146 B1 EP1556146 B1 EP 1556146B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ski
- roller
- rollers
- onto
- additional rollers
- 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
Links
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- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 1
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- 238000005452 bending Methods 0.000 description 1
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- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- 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
- A63C17/004—Roller skates; Skate-boards with auxiliary wheels not contacting the riding surface during steady riding
-
- 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
- A63C17/0046—Roller skates; Skate-boards with shock absorption or suspension system
-
- 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
-
- 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
- A63C17/12—Roller skates; Skate-boards with driving mechanisms
Definitions
- the present invention relates to roller ski, and in particular to a pair of roller skis or to a monoski or to a roller ski board of the type capable of sliding on rollers interposed between the ski and a suitable ground, e.g. a lawn, a pavement, a carpet and the like.
- roller skis or boards are known, sharing the presence of plural in-line rollers rotatably coupled to an elongated ski body. These examples have been devised in lieu of traditional-type skis or snowboards in order to allow skiing in the absence of snow.
- US 6,435,558 (Osawa) refers to skis having rollers located on a single line along the ski, in an arrangement known from the so called Rollerblade® .
- each roller With reference to the rollers positioned at the central portion of the ski, each roller is tapered sideways so that, tilting the skis when turning, the ground-resting spots lie along a curved line, with a bending radius which decreases at the increase of the camber.
- This arrangement enables turning with a skiing technique, and yet it undermines the ski stability when turning, where the least loss of adherence to the ground would entail a fall by side sliding, which in traditional snow skiing is called inner edge loss.
- US 5,195,781 discloses a ski supported by pairs of parallel rollers. At the central portion of the ski the rollers are mounted on elastic bearings and have a tapered shape such that, at tilted ski, the ground-resting spots are located on curved lines.
- This arrangement though more effective than the preceding one in terms of stability, aims at simulating the presence of the so-called laminae onto traditional skis. However, onto hard and possibly uneven terrains, the inner edge loss is always very high, as the outer roller is unburdened.
- the technical problem underlying the present invention is to provide roller ski allowing to overcome the drawbacks mentioned with reference to the known art.
- the main advantage of the roller ski according to the present invention lies in allowing turning with common skiing techniques, concomitantly ensuring a remarkable stability to the skier.
- 'roller ski' will mean the entire structure which is the subject-matter of the present invention, referring however not merely to common ski pairs analogous to those employed for on-snow downhills, but also to monoski or to snowboards.
- an individual roller ski of a pair of skis will be meant, it being understood that a pair of roller skis will comprise two specularly identical roller skis.
- the surface onto which the roller ski rests will hereinafter be defined with the term 'ground', however it is understood that it may include any type of terrain: e.g. asphalt, concrete, grass, firm soil, artificial terrains or turfs, carpets, artificial lawn, etc.
- ski'ski' will instead refer to the plane elongated laminar body or to the board that, in skis or snowboards, implements the entire device.
- This ski will be made of a wood-based, metallic, plastics, resin-based material, or composite thereof yet capable of providing the required elasticity and strength.
- a roller ski is generally indicated by 1. It comprises a ski 2 having an inner edge 3, an outer edge 4, and that extends from a rear end 5, or briefly tail, to a front end 6, or briefly tip, the latter having a raised configuration as in the common snow ski.
- the ski 2 further has a bottom ground-resting surface 7, or briefly bottom.
- the roller ski 1 comprises a binding 8 which in the present example is shown to be alike a common ski boot binding, employed in on-snow downhills. However, it is understood that the roller ski 1 could mount any type of binding adequate to the foreseen performances and to the footwear. Likewise, the binding 8 could be replaced by a shoe incorporated in the ski body 2.
- the contour of the ski 2 has a marked sidecut, alike that employed in on-snow downhill ski, i.e. the so-called carving ski.
- 'sidecut' it is meant that the edges of the ski 2 have curved profile with opposite convexities, so that the ski waist be narrower with respect to the wider regions corresponding to tip and tail.
- the sidecuts onto the inner edge 3 and the outer edge 4 are substantially symmetrical.
- the roller ski 1 is associated to a respective pole 9 having a handle 10 with a strap 11, a ferrule 12 e, at the latter, a basket 13.
- the roller ski 1 comprises in-line supporting rollers located along the centerline of the ski 2, apt to support the ski 2 while contacting the ground.
- the present embodiment comprises two supporting rollers 20, a front one, located between the binding 8 and the tip 6 and a rear one, located between the binding 8 and the tail 5.
- Said rollers may be of any one dimension, and could therefore be housed in suitable bearings below the bottom 7, or, as in the present embodiment, they could cross the thickness of the ski 2 by virtue of a suitable slot 21.
- said supporting rollers 20 are of the integrated-bearing type, known e.g. for in-line skates, and have a hub 22 fastened to the bottom 7 by fastening plates 23.
- Said supporting rollers 20 are of the type realizing a substantially punctiform contact on the ground, having a tapered contour and outer diameters that are smaller than the innermost diameters, i.e. than those nearer to the centerline thereof. Hence, said rollers 20 can be tilted preserving a point of contact onto the side surface thereof.
- the material selected for the supporting rollers 20, e.g. a resin, should be adequate in terms of friction and strength.
- the roller ski 1 further comprises a plurality of additional rollers, located at the inner edge 3 and at the outer edge 4 of the ski 2.
- the roller ski 1 has, at each edge of the ski 2, a pair of additional front rollers 24a, at the tip region 6, and a single additional rear roller 24b, at the tail region 5.
- Said additional rollers 24a, 24b are of the type realizing a substantially punctiform contact onto the ground, having a tapered contour and outer diameters smaller than the innermost diameters, i.e. than the diameters nearer to the centerline thereof.
- the material selected for the rollers 24a, 24b e.g. a resin, should be adequate in terms of friction and strength. Both for these latter rollers and for the supporting rollers 20, the rollers commonly employed for in-line rollerblades or rollerskates may be adequate. Rollers having a greater diameter, optionally provided of tires or of other covers, may be selected for employs on uneven and/or soft terrains like carpets, natural or artificial grass, dirt tracks, etc.
- the additional rollers 24a, 24b are mounted onto the ski 2 by virtue of a bearing 25 that, in present embodiment, is in the shape of an inverted-T and has a fastening plate 26. From the latter there rises a stem 27, comprising at its top a pair of flaps 28 ending in a fork 29, each flap having an additional roller 24a, 24b coupled thereto.
- a bearing 25 that, in present embodiment, is in the shape of an inverted-T and has a fastening plate 26. From the latter there rises a stem 27, comprising at its top a pair of flaps 28 ending in a fork 29, each flap having an additional roller 24a, 24b coupled thereto.
- the additional rollers 24a, 24b located onto the inner edge and onto the outer edge of the ski are destined to alternatively rest on the ground when the ski is tilted on the inside and on the outside (FIGS. 8 and 9A).
- the additional rollers 24a, 24b are located on a curved line C both onto the inner edge 3 and onto the outer edge 4.
- Said curved line C substantially follows the contour of the abovecited sidecut, a shape that facilitates the positioning of the additional rollers.
- said additional rollers could be mounted projecting directly onto the edge of the ski 2, and in this case the additional rollers would be located on a curved line defined directly by the sidecut of the ski 2.
- the abovecited bearing 25 is elastic and hence, when the roller ski 1 is tilted onto the inner or outer edge with the additional rollers 24a, 24b resting on the ground, a greater weight load onto the bearing edge will determine an elastic strain of the bearing 25, facilitating the spring back of the roller ski 1 to a horizontal configuration.
- the elasticity of the bearing 25 is due to the fact that said stem 27 can bend elastically.
- the same effect may be attained with a symmetric leaf spring configuration of the stem 27, with elastic flaps 28, with an elastic hub mounted onto the fork 29, with helical springs mounted between the flap and the fork, or even with actual shock absorbers.
- a symmetric leaf spring configuration of the stem 27 with elastic flaps 28, with an elastic hub mounted onto the fork 29, with helical springs mounted between the flap and the fork, or even with actual shock absorbers.
- the additional rollers 24a, 24b have a camber toward the centerline of the ski 2, so that when the roller ski 1 is tilted sideways the additional rollers 24a, 24b contact the ground substantially vertically.
- the camber is more marked, so that the additional roller 24a, 24b contacting the ground still has a camber toward the centerline of the ski 2. This positioning facilitates the unloading of the weight loaded onto the edge of the ski 2, compensating also the straightening back of the roller determined by the elasticity of the bearing.
- the adjustment of the camber of the additional rollers 24a, 24b, of the elasticity of the bearing 25 or of the camber of the curved line C may be provided.
- said line C is defined by the planes of rotation of the additional rollers 24a, 24b, tangential to said curved line C (figure 3).
- the preferred roller arrangement provides the supporting rollers 20 to lie between the binding 8 and the additional rollers 24a, 24b, whereas the latter will lie between the supporting rollers 20 and the tail 5 and the tip 6, respectively.
- the number of the supporting rollers 20 and/or of the additional rollers will be preselected according to the desired performances, to the skier's weight, and to the length of the ski 2. A marked increase of the latter will be unnecessary, it being optionally reduced as in on-snow carving skis.
- the roller ski 1 has at least one supporting roller 20, in particular the rear one, with evident advantages in terms of stability, provided with a braking system.
- the roller ski 1 could anyhow have a brake, even acting directly on the ground rather than onto the supporting rollers, like e.g. the one taught in US 4,892,332 (Jennings).
- the brake is of the disc type.
- a belt 31 at a first pulley 32 integral thereto.
- a second pulley 33 working as disc houses the belt 31.
- a pincer 34 provided with pads 39 acting onto the disc surface, is located onto the periphery of the second pulley 33 and it is provided with a remotely controlled hydraulic actuator, conventional and not shown in detail.
- a rigid casing 35 fastened to the ski 2 shields the brake 30.
- the remote control may be implemented in several different ways.
- the actuator may comprise an electric power source, e.g. a rechargeable battery, and be radio controlled by a remote control e.g. located in the handle 10, it also power-supplied by an analogous power source.
- the activation is of mechanical type and it comprises a cable 36 housed inside of a sheath 37 extending from the pincer 34 to the handle 10 of the pole 9.
- the brake 30 comprises a lever 38 capable of pulling the cable 36, thereby activating the actuator of the pincer 34 according to a system already tried out in the field of bicycle brakes.
- the abovedescribed disc brake 30 could be replaced by other brake variants, e.g. the pincers could act directly onto the supporting roller, in particular on a specifically provided crown thereof.
- the same brake could be controlled by a skier's shifting the ski boot onto the binding.
- a anti-blocking system well-known in the motor field, i.e. capable of preventing the blocking of the supporting roller with the entailed extension of the braking space.
- the skier During a normal sliding, the skier keeps the roller skis 1 substantially parallel and not tilted sideways.
- the supporting rollers 20 act as a rollerblade system and, being located at the central region of the ski 2, provide a sufficient stability implementable by the skier through an adequate employ of the poles 9.
- the speed due to the gradient of the downhill that is being negotiated, may be adjusted by virtue of the brake 30 (figures 7 and 7A).
- the skier can perform the so-called wedge technique by tilting both skis inwards, thereby ground-contacting the additional rollers 24a, 24b at the inner edge 3 (figures 8 and 8A).
- the additional rollers 24a, 24b lie on a curved line C that facilitates the turning, as it happens e.g. in the abovementioned carving skis.
- the additional rollers 24a, 24b replace the laminae of an on-snow ski concomitantly ensuring the maximum stability of the ski by virtue of the supporting rollers 20 always maintaining a grip.
- a greater weight load determines an elastic strain of the bearing 25 of the additional rollers 24a, 24b, a strain giving the skier a sensation which is very similar to that given by on-snow skiing and turning.
- roller ski fit any off-snow sport or amateur employ. It is understood that the same principles hereto described may fit any ski type: downhill, slalom, cross-country, jump skis, etc. Moreover, the same technical principle may successfully be adopted on monoski and snowboards. Moreover, the abovedescribed roller ski allow turning according to any known technique (christiania, matching skis, Telemark).
- roller ski may be employed for sport training, for amateur practice and for learning.
- roller ski a person skilled in the art in order to meet further and contingent needs may effect several further modifications and variants, all however comprised within the protective scope of the present invention, as defined by the appended claims.
Landscapes
- Road Paving Structures (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Motorcycle And Bicycle Frame (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Claims (14)
- Rollski (1), der umfasst:Reihen-Tragerollen (20), die entlang der Mittellinie des Ski (2) angeordnet sind und sich dazu eignen, den Ski (2) zu tragen, während sie mit dem Boden in Kontakt sind; undeine Vielzahl zusätzlicher Rollen (24a, 24b), die sich an der Innenkante (3) und an der Außenkante (4) des Ski (2) befinden, wobei die zusätzlichen Rollen (24a, 24b) in Bezug auf den Boden erhöht sind,die zusätzlichen Rollen (24a, 24b) auf einer gekrümmten Linie (C) zwischen der Bindung (8) und dem Spitzenbereich (6) sowie zwischen der Bindung (8) und dem Endbereich (5) angeordnet sind und die zusätzlichen Rollen (24a, 24b) an der Innenkante (3) und an der Außenkante (4) des Ski (2) am Spitzenbereich (6) und am Endbereich (5) angeordnet sind und sich dazu eignen, abwechselnd auf dem Boden aufzusitzen, wenn der Ski (2) zur Innenseite bzw. zur Außenseite geneigt wird,dadurch gekennzeichnet, dass die zusätzlichen Rollen (24a, 24b) mittels eines elastischen Lagers (25) an dem Ski (2) angebracht sind.
- Rollski (1) nach Anspruch 1, wobei die Kontur des Ski (2) eine Taillierung an der Innenkante (3) und der Außenkante (4) hat, und die gekrümmte Linie (C) im Wesentlichen der Kontur der Taillierung folgt.
- Rollski (1) nach Anspruch 2, wobei die zusätzlichen Rollen (24a, 24b) so angebracht sind, dass sie direkt an der Kante des Ski (2) vorstehen, und die gekrümmte Linie (C) so direkt durch die Taillierung des Ski (2) gebildet wird.
- Rollski (1) nach Anspruch 1, wobei die zusätzlichen Rollen (24a, 24b) eine Wölbung zur Mittellinie des Ski (2) hin haben, so dass, wenn der Rollski (1) seitlich geneigt wird, die zusätzlichen Rollen (24a, 24b) im Wesentlichen vertikal mit dem Boden oder mit einer Wölbung zur Mittellinie des Ski (2) hin in Kontakt kommen.
- Rollski (1) nach Anspruch 1, wobei die Anordnung der Rollen (20, 24a, 24b) gewährleistet, dass die tragenden Rollen (20) zwischen der Bindung (8) und den zusätzlichen Rollen (24a, 24b) liegen, während die letzteren zwischen den tragenden Rollen (20) und dem Ende (5) bzw. der Spitze (6) liegen.
- Rollski (1) nach Anspruch 1, wobei wenigstens eine tragende Rolle (20) mit einem Bremssystem versehen ist.
- Rollski (1) nach Anspruch 6, wobei das Bremssystem auf eine hintere tragende Rolle (20) wirkt.
- Rollski (1) nach Anspruch 6 oder 7, wobei das Bremssystem eine Scheibenbremse (30) umfasst.
- Rollski (1) nach Anspruch 8, wobei an einer tragenden Rolle (20) ein Riemen (31) an einer ersten Riemenscheibe (32) befestigt ist, die integral mit dem tragenden Rad (20) ausgebildet ist und eine zweite Riemenscheibe (33), die als Scheibe wirkt, den Riemen (31) aufnimmt und mit einer Klemme (34) versehen ist, die auf die Scheibenoberfläche wirkt und sich am Umfang der zweiten Riemenscheibe (33) befindet.
- Rollski (1) nach Anspruch 6 oder 7, wobei das Bremssystem ein fernbedientes Betätigungselement umfasst.
- Rollski (1) nach Anspruch 10, wobei das Betätigungselement eine Stromquelle umfasst und durch eine Fernsteuerung funkgesteuert wird, die durch eine analoge Stromquelle mit Strom versorgt wird.
- Rollski (1) nach Anspruch 10, wobei das Betätigungselement eine mechanische Betätigung aufweist, die ein Seil (36), das im Inneren einer Ummantelung (37) aufgenommen ist, und einen Hebel (38) umfasst, der das Seil (36) ziehen kann, um so das Betätigungselement zu aktivieren.
- Rollski (1) nach Anspruch 11 oder 12, wobei die Fernsteuerung oder der Hebel (38) mit einem Griff (10) eines Skistocks (9) verbunden ist.
- Rollski (1) nach Anspruch 13, wobei das Bremssystem ein Antiblockiersystem umfasst.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IT2002/000682 WO2004037358A1 (en) | 2002-10-28 | 2002-10-28 | Roller ski |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1556146A1 EP1556146A1 (de) | 2005-07-27 |
| EP1556146B1 true EP1556146B1 (de) | 2006-05-24 |
Family
ID=32170668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02788537A Expired - Lifetime EP1556146B1 (de) | 2002-10-28 | 2002-10-28 | Rollski |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1556146B1 (de) |
| AT (1) | ATE327012T1 (de) |
| AU (1) | AU2002353512A1 (de) |
| DE (1) | DE60211757T2 (de) |
| ES (1) | ES2265059T3 (de) |
| WO (1) | WO2004037358A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006018505A1 (de) * | 2006-04-21 | 2007-10-25 | Reinhard Wittner | Gelände-Inline-Skates |
| DE102007007176A1 (de) * | 2007-02-09 | 2008-08-14 | Duong, Gilbert, Dr. | Gleitrollen für Skier |
| IT1394607B1 (it) * | 2009-06-08 | 2012-07-05 | Bolditalia S R L | Perfezionamento negli sci o tavola su ruote. |
| US10807659B2 (en) | 2016-05-27 | 2020-10-20 | Joseph L. Pikulski | Motorized platforms |
| US10071303B2 (en) | 2015-08-26 | 2018-09-11 | Malibu Innovations, LLC | Mobilized cooler device with fork hanger assembly |
| RU2725642C1 (ru) * | 2019-05-13 | 2020-07-03 | Николай Васильевич Вагин | Транспорт |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3617245C1 (de) | 1986-05-22 | 1987-06-04 | Engelbert Schmid | Bremseinrichtung fuer einen Rollski |
| US4887824A (en) * | 1987-08-24 | 1989-12-19 | Jeffrey Zatlin | Skatecraft |
| US4886298A (en) | 1987-11-30 | 1989-12-12 | Shols Christopher B | Roller ski |
| US4892332A (en) | 1988-11-04 | 1990-01-09 | Ryan Jennings | Braking system for roller skis |
| US5195781A (en) | 1989-03-28 | 1993-03-23 | Kazuo Osawa | Grass ski roller boards |
| JP2993652B2 (ja) * | 1993-02-13 | 1999-12-20 | ユニテック 株式会社 | 電動遊戯具 |
| US6237960B1 (en) | 1994-03-01 | 2001-05-29 | Siegfried Dornhofer | Roller-type skiing device for negotiating a slope |
| US5855385A (en) * | 1996-09-23 | 1999-01-05 | Hambsch; Stephen G. | Wheeled board apparatus having platform with concave sidecuts |
| JP4267747B2 (ja) | 1999-03-03 | 2009-05-27 | 和雄 大澤 | ローラースキー |
-
2002
- 2002-10-28 WO PCT/IT2002/000682 patent/WO2004037358A1/en not_active Ceased
- 2002-10-28 AT AT02788537T patent/ATE327012T1/de active
- 2002-10-28 ES ES02788537T patent/ES2265059T3/es not_active Expired - Lifetime
- 2002-10-28 EP EP02788537A patent/EP1556146B1/de not_active Expired - Lifetime
- 2002-10-28 DE DE60211757T patent/DE60211757T2/de not_active Expired - Lifetime
- 2002-10-28 AU AU2002353512A patent/AU2002353512A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| DE60211757D1 (de) | 2006-06-29 |
| ATE327012T1 (de) | 2006-06-15 |
| WO2004037358A1 (en) | 2004-05-06 |
| ES2265059T3 (es) | 2007-02-01 |
| EP1556146A1 (de) | 2005-07-27 |
| AU2002353512A1 (en) | 2004-05-13 |
| DE60211757T2 (de) | 2007-05-16 |
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