WO1992013609A1 - Alpine pair ski - Google Patents
Alpine pair ski Download PDFInfo
- Publication number
- WO1992013609A1 WO1992013609A1 PCT/NO1992/000020 NO9200020W WO9213609A1 WO 1992013609 A1 WO1992013609 A1 WO 1992013609A1 NO 9200020 W NO9200020 W NO 9200020W WO 9213609 A1 WO9213609 A1 WO 9213609A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ski
- sides
- front section
- width
- sliding surface
- Prior art date
Links
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
- A63C5/04—Structure of the surface thereof
- A63C5/052—Structure of the surface thereof of the tips or rear ends
-
- 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
- A63C5/04—Structure of the surface thereof
Definitions
- the invention concerns an Alpine pair ski with upturned tip and a main section with curved sides and approximately flat sliding surface.
- pair ski refers to skis which are intended for use in pairs, i.e. with one ski on each foot, as opposed to so-called monoskis, where both feet are placed on a single ski.
- the turning technique for pair skis is fundamentally different from that used for monoskis.
- a pair ski of even width is known, where a front section of the approximately flat sliding surface is bordered at the sides by two bevelled sections.
- the width of each of the bevelled sections normally increases steadily until they meet at the central axis of the ski at the transition between the main body and the tip.
- the bordered front section of the two bevelled side sections of the flat sliding surface is thereby normally approximately triangular in shape. Not only does the bevelling increase in width, but the angle of bevelling also increases towards the tip. The object is to reduce resistance during turning.
- pair skis it is also normal for pair skis to be slightly wider at the front and the rear, i.e. the sides of the skis are gently curved. This helps to steer the skis through the turns with the least possible loss of kinetic energy. If the sides are curved too much, however, the skis will be difficult to control, since when they are on their edges they will cut into the snow at the front and the rear. Moreover, the grip on the snow in the middle of the ski will be reduced, which is a major disadvantage particularly on a hard cover, where everything depends on being able to skid well in the middle of the ski. For these reasons there is a limit to what can be achieved with this kind of curving of the sides.
- CH 662 744 A5 describes a pair ski whose sides curve substantially inwards. As already mentioned, such skis will be difficult to control.
- the object of the present invention is to provide a ski which makes it possible to turn with the least possible loss of kinetic energy, in that it does not cut too deep into the snow, but still permits the attainment of a good grip when skidding. In this way a faster ski can be obtained which is still easy for the performer to control.
- a front section at most 20 cm in length of the main body has sides whose lower edges diverge so markedly upwards and outwards to the sides in relation to imagined, straight, parallel lines which constitute extensions of the lower edges of the sides of the rest of the main body that (a) at the transition between the main section and the tip, the ski has a width which is 15-70%, preferably 15-50% and best of all 20-30% greater than the width at the transition between the front section and the rest of the main section, and that (b) the lower edge of each side edge here is at a vertical distance above a plane between the said lines which are at least 10%, and preferably at least 15%, e.g. approximately 20% of the increase in width.
- the skis are thus considerably wider at the front end than at the middle without being difficult to control, the lower edge of each side diverging upwards and thereby being raised sufficiently from the snow to prevent it from cutting into the snow when the skis are on their edges despite the increased ski width at the front end.
- the upward divergence of the lower edge is closely connected with the pronounced outward curve (the increased width) at the front of the ski.
- the ski can also be wider at the rear end and the lower edges of the sides can be raised correspondingly.
- the outward curve will help the performer to make the turn with less skidding and thus a lesser loss of kinetic energy.
- the outward curve at the front and possibly the rear will not prevent the steel edges on the central section from getting a grip. With the correct adjustment of angle and curve the skis will still be under full control, even if hard skidding is required.
- the absolute width increase in millimetres is naturally dependent on the length of the front section. When this is short, the width increase will have to be in the lower part of the specified area.
- An interesting design is one in which the length of the front section and the width increase are in the lower range, i.e. the front section is approximately 5 cm long, while the width increase is approximately 15%.
- An upward divergence of the lower edge can be achieved by bending the sliding surface on the front section slightly upwards in relation to the sliding surface on the rest of the main body.
- Another way of achieving upward divergence of the lower edge is to arrange for the sliding surface on the front section to be bordered at the sides by two bevelled sections. These two solutions can naturally be combined in order to achieve the necessary raising of the lower edge. When bevelled side sections are used, these should mainly lie outside the said parallel lines.
- Fig. 1 is an embodiment viewed from above.
- Fig. 2 illustrates the front section of the ski in figure l, viewed from below.
- Fig. 3 is a perspective view of the front end of the ski.
- Figs. 4a, 4b and 4c are three different embodiments of the ski in fig. 2 in cross section taken along the line IV-IV.
- Fig. 5 is another embodiment viewed from below.
- Fig. 6 is a side view of the ski in the embodiment in fig. 5.
- line C-C indicates the narrowest part of the ski. Between line B-B and the rear end of the ski E-E, the ski has sides 3 with a normal inward curve (outward curve) . The lower edge of each side 3 is indicated by 3* .
- the ski has a mainly flat sliding surface 1 which on the front section of the ski's main body is indicated by la.
- This front section extends from B-B to line A-A, where the underside of the ski begins to curve upwards to form the tip, which ends at point F.
- the front section should have a length of at most 20 cm, preferably approximately 10-15 cm, but the length can also be less.
- the section of each side 3 relating to the front section of the ski is indicated by 3a, and the corresponding lower edges are indicated by 3a 1 .
- the bevelled surfaces 4 are shown as flat, while those in figs. 4b and 4c are shown as a concave and convex curve respectively. It may be suitable for the bevelling angle ⁇ to be constant, but it is within the scope of the invention to allow it to vary between points B-B and A-A. In figs. 4a-4c the upper side of the ski is shown flat, but if the width of the bevelling 4 and the size of the angle ⁇ would otherwise cause the ski to become too thin at the sides 3, it is also possible to curve the upper side upwards at the sides on those sections which are bevelled on the underside.
- the result of the illustrated bevelling is that the lower edge 3a' of the sides 3a will diverge upwards in relation to the lines 2. Thereby the edge 3a* will not cut so easily into the snow when the ski is on its edge, despite the increased width of the ski between points B-B and A-A.
- the bevelling 4 can extend further in towards the middle of the ski than to the lines 2, but the pronounced outward curve of the ski between points B-B and A-A will make it unnecessary to let the bevelling extend so far inwards, and the embodiment illustrated in figs. 1-4 is the preferred one.
- an upward divergence of the lower edge 3a' from the related line 2 is achieved by bending the sliding surface la on the front section gently upwards in relation to the sliding surface 1 on the rest of the main body. Thereby no bevelling is required in order to prevent the lower edge 3a' fron cutting into the snow when the skis are on their edges during turning.
- the angle ⁇ between the surfaces l and la can be maintained at a few degrees.
- the rear section of the ski (between line D-D and the rear end E-E) can be of a similar design as the front section (between lines A-A and B-B) .
- the rear section can be less extreme with regard to outward curve and upward curve than the front section.
- a normal width for an alpine ski at the front end is 75-90 mm, and the width 5-20 cm behind the front end (corresponding to line B-B) is a few millimetres less.
- the width will increase substan ⁇ tially more towards the front, preferably by 15-20 mm, but an increase of as little as 12 mm or as much as 60 mm is also conceivable.
- An appropriate raising of the lower edges 3a in relation to the lines 2 will be from 2-10 mm, but higher values are conceivable.
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP92904838A EP0570467B1 (en) | 1991-02-07 | 1992-02-03 | Alpine pair ski |
DE69201129T DE69201129T2 (en) | 1991-02-07 | 1992-02-03 | ALPINE PAARSKI. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO910487A NO172170C (en) | 1991-02-07 | 1991-02-07 | ALPIN PARSKI |
NO910487 | 1991-02-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992013609A1 true WO1992013609A1 (en) | 1992-08-20 |
Family
ID=19893864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NO1992/000020 WO1992013609A1 (en) | 1991-02-07 | 1992-02-03 | Alpine pair ski |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0570467B1 (en) |
AT (1) | ATE116567T1 (en) |
CA (1) | CA2103589A1 (en) |
DE (1) | DE69201129T2 (en) |
NO (1) | NO172170C (en) |
WO (1) | WO1992013609A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999046016A1 (en) * | 1998-03-10 | 1999-09-16 | Hiturn As | Snowboard |
US6663137B2 (en) | 1998-03-10 | 2003-12-16 | Karlsen Joergen | Snowboard |
EP3034137A1 (en) * | 2010-06-07 | 2016-06-22 | Hiturn AS | Snowboard |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO940482D0 (en) * | 1994-02-11 | 1994-02-11 | Joergen Karlsen | Alpine Parski |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE88426C1 (en) * | ||||
DE3600862A1 (en) * | 1985-01-16 | 1986-07-17 | Salomon S.A., Pringy | SKI |
US4971349A (en) * | 1986-05-23 | 1990-11-20 | Salomon S.A. | Ski having upper and lower surfaces of differing width |
-
1991
- 1991-02-07 NO NO910487A patent/NO172170C/en unknown
-
1992
- 1992-02-03 EP EP92904838A patent/EP0570467B1/en not_active Expired - Lifetime
- 1992-02-03 DE DE69201129T patent/DE69201129T2/en not_active Expired - Fee Related
- 1992-02-03 AT AT92904838T patent/ATE116567T1/en not_active IP Right Cessation
- 1992-02-03 WO PCT/NO1992/000020 patent/WO1992013609A1/en active IP Right Grant
- 1992-02-03 CA CA002103589A patent/CA2103589A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE88426C1 (en) * | ||||
DE3600862A1 (en) * | 1985-01-16 | 1986-07-17 | Salomon S.A., Pringy | SKI |
US4971349A (en) * | 1986-05-23 | 1990-11-20 | Salomon S.A. | Ski having upper and lower surfaces of differing width |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999046016A1 (en) * | 1998-03-10 | 1999-09-16 | Hiturn As | Snowboard |
US6663137B2 (en) | 1998-03-10 | 2003-12-16 | Karlsen Joergen | Snowboard |
EP3034137A1 (en) * | 2010-06-07 | 2016-06-22 | Hiturn AS | Snowboard |
Also Published As
Publication number | Publication date |
---|---|
NO910487L (en) | 1992-08-10 |
DE69201129D1 (en) | 1995-02-16 |
CA2103589A1 (en) | 1992-08-08 |
EP0570467B1 (en) | 1995-01-04 |
NO172170B (en) | 1993-03-08 |
DE69201129T2 (en) | 1995-06-01 |
NO910487D0 (en) | 1991-02-07 |
EP0570467A1 (en) | 1993-11-24 |
NO172170C (en) | 1993-06-16 |
ATE116567T1 (en) | 1995-01-15 |
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