CA2322866C - Snowboard - Google Patents

Abstract

A snowboard comprises a board and bindings mounted on the board's surface. The board is designed with a first sole surface which is divided into three portions between the tips, and which is flat along its entire length between the transitions to the tips when the broad is pressed down against the base. In the front and rear portions, on each side of the first sole surface, the sole of the snowboard includes secondary lateral areas (2). In the secondary lateral areas (2) the cross section will form substantially straight lines. The secondary areas are rigid and not in contact with the ground unless the board is edged. The angle which the secondary lateral areas form with the first sole surface viewed in cross section, will substantially be increasing when moving from the transverse lines (5 or 7) towards the transition to the tips (4 or 8).

Description

JUN.2012006 16:26 613-230-8755 CASSAN MACLEAN #4279 P.004 Snowboard The invention relates to a snowboard, consisting of a board on which two bindings are mounted on the upper surface of the board, at a distance apart approximately corresponding to 1/3 of the board's length. The board is designed with inwardly curving edge portions, the board having a greater widtlt at both ends at the transition to the tips, and with a minimum width of 18 em in the middle. The board has upturned tips, possibly with a slightIy more moderate tip at one end.

At present snowboards are normally designed with a flat sole surface between the ti.ps at both ends which is the gliding surface of the board. For steering the board is edged and the weight distributed between the feet in the two bindings.
Snowboarding is a field which is related to Alpine skiing. In. Alpine skis it is known to have the sole or gliding surfaces designed ivith angled portions in partial areas of the sole surface.

Thus in Norwegian paten.t 172 1704here is disclosed an Alpine ski, of a pair of skis, which on a nlaximum 20 cm long front portion has a gliding surface whicli diverges upwards when the steel edge diverges outwards from the ski's longitudinal axis. The ob.jee't of this ski is to turn with the least possible loss of kinetic energy. Yn. W09521662 there is discloscd an Alpine ski, which oii a portion which is longer than 20 cm has a gliding surface which diverges upwards when the steel edge diverges outwards from tbe ski's longitudinal axis. The object of this ski is to tu.m with the least possible loss of kinetic energy, but in this case with a more harmonious design than, in that which is described 'zn. Norwegian patent 172 170.

In Norwegian patent no. 3 01 964, which corresponds to EP 748245 there is disclosed an Alpine ski with a flat first gliding surface and lateral surfaces provided with an almost continuous concave inward curve between a first transition line which defines the transition from a tip portion to a front portion and a second transition line which defmes the transition from the main portion to a rear portion. The lower lateral edge between the transition lines describes an almost conti.nuous curve. The sole on both sides of the first gliding surface comprises further gliding surfaces, which extend upwards from the edge of the first gliding surface to the lower lateral edges of the ski with an upward curve.
, The additional gliding surfaces extend in the longitudinal direction of the slti, at least from the first and second transition lines respectively towards R
transverse line behind the middle ofthe ski and in the portion oftlic ski where JUN.20'2006 16:27 613-230-8755 CASSAN MACLEAN #4279 P.005 the binding is attached, the width of the ski at the transvcrse tine being equal to the least width of the slci between the transition lines. The upward curve in the lower lateral edge on the additional gliding surfaces increases substantially with the sk.i's increasing width in the direction of the two transition lines.

An Alpine ski as described in this publicataom has been shown to be very well suited to Alpine events and the angled gliding surfaces, which even with a relatively slight edging of the ski r.an be pressed i.z-to contact with the base, giving improved turning tecWque and grip on the base.

The present invention is based on the development of Alpine skis which is described in Norwegian patent no. 301964. Even though both skis and snowboards are used for downhill skiing and turning in Alpine terrain, there are nevertheless significant differences. This difference is based both on the difference in design of the two products and on the manner in which the product manoeuvres. In skis the weight is distributed with a foot in a binding in the central portion of each ski and the ski, which is elongated and relatively narrow, at least for most of its length, will, when a pressure load is applied in the central area, be able to be forced to assume different positions against the base. In the case of a snowboarii the performer stands with both feet-transversally Positioned on a substantially wider board and he will steer the hoard by bodily movements and by distributing his weight between the rront and, the rear orthe boar[i. Since the board is wider and shorter and the weight distribution different the board will not only be more rigid than a ski but will also be steered in a different way.
In the present invention it has been found that a number of the princxples which have been developed in connection with the ski according to Norwegian patent no. 301964 in modified and developed form can be employed for further development of a snowboard, resulting in a marked improvement in their handling characteristics.

On this basis, thereforc, it is the object of the invention to provide an improved snowboard. This is achieved by means of a snowboard which is characterized by the features which will be presented in the patent claims.

The snowboard according to the present invention differs froin the above-mentioned, known ski designs in the requirement, amongst other tliings, that the secondaty lateral areas of the board should be substantially Lwiste4. )jy twisted it should be understood that the angle of the lateral area against the JUN.20'2006 16:27 613-230-8755 CASSAN MACLEAN #4279 P.006 base, viewed in the transverse direction ot tlle board, mostly iilcrmses from the central portion up to the ti-rmt area at the t.ips.

From the dynam.ic point of view a snowboard differs from a ski in many ways, for reasons of both design and mode of application, as indicated above. A ski with a certain inward curve will be twisted upwards at the tip and rear tip when edged, since the slcier presses with his foot in the middle of the ski and the counter-forces from the base wiil twist the ski, reducing the aggressiveness at the front and the rear due to the fact that the sole is flatter against the snow at the front and the rear than in the middle. In contrast with this the perfonner on a snowboard will stand with both feet placed not so far fror-t the tips, with the result that in relative and absolute terms the snowboard has less length than the ski to generate a twisting moment. It will therefore not be so easy to twist the snowboard. It is therefore absolutely necessary to give i:he snowboard a dynamically coz'rect shape at the manufacturing stage. This is achieved according to the invention by combining dimensions which are specific to the snowboard with selected features wliich are known to be employed in connection with skis, since these selected features together will give the sn.owboard an optimal dynamic adaptation. Thus it is the combination of the features indicated in the patent claims which make it possible to utilise the features known from skis for an i.mprovement of an alternative product, viz. a snowboard.

There is therefore a fundamental difference between ski and board, and in the invetition it has surprisingly been slaowx} that by means of adaptation and modification of features known from the field of skis with regard to the design of twisted surfaces, it has been possible to develop a snowboard which is adapted to the dynamics which apply to skis.

When the twisted board according to the invention is placed on the snow, it can already have a better dynamic sbape than the surface the board is capable of achieving, since the board according to the invention is produced with a twisting of the sole adapted to where the weight is actually placed oxx the board, with regard to the ideal twisting which is desired.

It has furtlier been shown that there are significant safety aspects associated with a specific design o#'raised gliding surfaces with regard to landixzg after jumping with the snowboard. It is a fact that falls with snowboards result in many ir-juries, which are far more serious than the speed would indicate. The s-nowboard according to the present invention is also designed to increase JUN.20'2006 16:26 613-230-8755 CASSAN MACLEAN #4279 P.007 :Q
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safety in landing after a jump, due to the fact that it is not so aggressive in the edge area during landing.

The znore curved the steel edge in the snowboard's edge area is, the greater tendcncy it has to cut away in an uncontrolled fashion when landing after a jump, especially when ma3cing an almost flat laibding. The invention will therefore provide greater safety benefxts the more inward curve the snowboard has. By allowing the board to be almost flat along its entire width at the central portion a reasonable edge grip can also be secured when the board is flat against the snow. On the front and rear portions of the board the right and left parts of the sole are twisted upwards, thus providing a less aggressive steel edge, but at the same time the board has to be formed in suclt a manner that it has a good edge grip when turning. Thu.s a boat shape, in which the cross section shows cumd lincs near the steel edge will be unsuitable, since the angle at the steel edge will then be too large to give a good edge grip. The snowboard described with a cross section in the front and rear portions consisting of three straight lines (fig. 2) will ensure both a less aggressive edge grip during landing after a jump and adequate edge grip during turning.

1he width is a further significant difference between ski and snowboard. A
narrow ski can easily be edged 45a. The much wider snowboard is usually run mtich flatter than a ski. A great deal of edge grip will therefore easily be lost with a snowboard when the secondary surfaces are too acutely angled relative to the first sole surface. The in-vention solves this special problem for snowboards by means of the special design of raised lateral area from the followixig criteria:

1. The secondary lateral area must have a certain *ri +imum width which is greater than for most skis, tllus achieving a greater uplift with less angling of the secondary lateral area relative to the main area of the solo surface, i.e. the gliding surface.

2. The secondary lateral area is raised from the plane of the main area by being twisted upwards when moving from the middle towards the tips.

3. The cross section shows #Iie sole as three substantially straight lines in those parts of the board where there are secondary lateral areas.

The iiivention will now be iIIustrated in more detail by means of the =
embodiments which are presented in the drawings, in which:

fig. 1 illustrates t11c undersicle of a snowboard according to the invctition, :S
fig. 2 is a cross section of the snowboard in fig. 1, viewed across the board in the areas indicated by A, B C, fig. 3 is a variant of the embodiment in fig. 1, fig. 4 is a third embodiment of the invention, fig. 5 is a variant of the embodiment in fig. 1, fig. 6 is a variant of the embodiment in fig. 5, fig. 7 is a further variant of the invention, fig. 8 is a further variant of the invention, figs. 9 and 10 illustrate the snowboard according to the invention, viewed from the side and from one end.

Fig. 1 illustrates the underside of a snowboard. The hatched gliding surface 1, called the main area, is completely flat when the board is pressed against a flat base. The secondary lateral areas 2a and 2b in line 5a - 5b form zero degrees with the main area, and up to line 4a - 4b form a substantially increasing angle with the main area, viewed in cross section as shown in fig. 2. In the same way the secondary lateral areas 2c and 2d in line 7a - 7b form zero degrees with the main area, and up to line 8a - 8b form a substantially increasing angle with the main area. The secondary lateral areas 2 therefore appear to be twisted, if not over their entire length, to such an extent that they have the function of a twisted surface. The front tip 3a and rear tip 3b and central transversal axis 6a - 6b are also shown.

Fig. 2 illustrates three cross sections of the snowboard in fig. 1, taken directly across from fig. 1. In order to illustrate the increasing angle from line 5a-5b to line 4a-4b the angles are slightly exaggerated, thus making it easy to see that there is a larger angle nearest line 4a-4b. In cross section the sole surfaces are shown to be completely straight, even though in the transition between first sole surface and the secondary lateral areas there may be a certain degree of rounding.

Fig. 3 illustrates a design in which the secondary lateral areas are terminated reasonably parallel to the steel edge.

Fig. 4 illustrates a design in which the secondary lateral areas are widest at the transition to the tips at lines 4a-.4b and 8a-8b respectively, gradually narrowing as one approaches lines 5a-5b and 7a-7b respectively. In this embodiment the k:\patent\1I 1 00 011 1 1 0571selaadsdokamenter\1I1057 kec4 04 02 e.doc ;6 degree of twisting will be less than in the other embodiments which are illustrated.

Fig. 5 illustrates approximately the same design as fig. 1. Here the board is envisaged moving straight ahead with the board completely flat against a hard base. Only the steel edges outside the main area plane 1 are then in contact with the snow, while the performer's weight is envisaged evenly distributed over the entire length of the main area plane. As an illustration we have chosen to let the central portion of the snowboard be the same length as the sum of the length of the secondary lateral areas on the same side. Thus the lengths 4a-5a and 7a-8a are here equal to 5a-7a, and correspondingly on the opposite side.
F/2 is the force from the base on the steel edge over half the length of the board, while d/2 is the average distance from the centre 6 of the performer to the force's point of attack on one side. M indicates torque.

Fig. 6 illustrates the same design as fig. 5, but with a completely flat sole.
F is the force from the base on the steel edge along the entire length of the board, while d is the average distance from the centre 6 of the performer to the force's point of attack on one side. M indicates torque.

Figures 7 and 8 illustrate two further examples of snowboards designed according to the invention. In the embodiment according to figure 7 the hatched sole surface, i.e. the main area is designed with equal, relatively narrow width along the whole board, but has a central portion at line 6-6 which makes a "soft" transition into the lateral areas. A certain degree of asymmetry in the secondary areas is indicated, even though symmetry is preferred. In the embodiment in figure 8 the hatched main area surface is designed narrowing from line 6-6 to end lines 4-4 and 8-8, which is first illustrated from lines 5-5 and 7-7. The portion of the main area surface between these two lines is continued right out to the edge. In all embodiments the lateral areas are designed in a twisted form.

The illustrated examples will provide boards which have different handling characteristics, but will all provide the special advantage which is achieved by means of the invention.

Finally, figures 9 and 10 illustrate the snowboard according to the invention, viewed from the side and from one of the ends. On this scale the angles had to be exaggerated relative to the preferred angle in order to clearly illustrate the principle. In figure 10 the twisting of the lateral areas can be seen indicated on the underside, with the maximum angle in the transition to the tip.
k.\patent1111000\1110571selaadsdolvmenter\111057 kar4 f 34 02 e.doc :7 Four tables are now presented illustrating the twisting angle for the lateral areas in the snowboard according to the invention. Thus table 1 gives four examples of snowboards with a constant cross section for the first sole surface.
Table 2 exemplifies an embodiment with constant width for the secondary lateral areas, while table 3 gives the angle for boards with variable width for the first sole surface in the secondary lateral areas. Table 4 illustrates an example of an asymmetrical snowboard.
The tables are only intended as a demonstration of the increasing angle against a flat base from a cross section at the central area to cross sections at regular intervals distributed in the direction towards the ends of the board.

It should be obvious from the above that despite the choice and combination of special features which are partly known from ski technology, many modifications are possible. Further development according to the invention is based on the combination of selected features in such a manner that a result is obtained which is unique for snowboards. In the invention a selection of features and dimensions have been made which together provide an improvement.

k:lpatent111100011110571aeLnadsdoknmenter1111057 kar4 f34 02 e.doe WO 99/46016 PC'I'/N099/00032 8 Table 1. Four examples of a snowboard with a constant v6dtin of tlle fi'rst'bhse sm'face.' For simplicity we use in these examples snowboards with circular sidecut, and symmetry along both the longitudinal and transversal central axis.
Total width Total width Length (6)-(8) Length (6)-(4) Sidecut at (8) at (6) radius Distance Total width Width of the 1. Width of each Cross sectional angle between from the tip base surface secondary first base and secondary areas areas 1 2 3 4 150 290,0 80,0 105,0 3,0 1,0 2,0 2,2 200 284,1 80,0 102,0 2,7 0,7 1,9 2,2 250 278,6 80,0 99,3 2,4 0,3 1,8 2,1 300 273,7 80,0 96,8 2,1 0 1,7 2 350 269,2 80,0 94,6 1,8 0 1,6 1,8 400 265,1 80,0 92,6 1,5 0 1,5 1,6 450 261,6 80,0 90,8 1,2 0 1,4 1,4 500 258,5 80,0 89,3 0,9 0 1,2 1,2 550 255,9 80,0 88,0 0,6 0 0,9 1 600 253,8 80,0 86,9 0,3 0 0,6 0,8 650 252,1 80,0 86,1 0 0 0,3 0,6 700 250,9 80,0 85,5 0 0 0 0,4 750 250,2 80,0 85,1 0 0 0 0,2 800 250,0 80,0 85,0 0 0 0. 0 850 250,2 80,0 85,1 0 0 0 0,2 900 250,9 80,0 85,5 0 0 0 0,4 950 252,1 80,0 86,1 0 0 0,3 0,6 1000 253,8 80,0 86,9 0,3 0 0,6 0,8 1050 255,9 80,0 88,0 0,6 0 0,9 1,0 1100 258,5 80,0 89,3 0,9 0 1,2 1,2 1150 261,6 80,0 90,8 1,2 0 1,4 1,4 1200 265,1 80,0 92,6 1,5 0 1,5 1,6 1250 269,2 80,0 94,6 1,8 0 1,6 1,8 1300 273,7 80,0 96,8 2,1 0 1,7. 2,0 1350 278,6 80,0 99,3 2,4 0,3 1,8 2,0 1400 284,1 80,0 102,0 2,7 0,7 1,9 2,1 1450 290,0 80,0 105,0 3,0 1,0 2,0 2,1 Where the angle is zero, the first base surface extend to the steel edges In these example the width of the first base surface is chosen to be 80 mm, but it could just as well have been set at any value between 40 mm and 160 mm WO 99/46016 PCTlN099/00032 9 Table 2. Four examples of a snowboard with a constant width cf tiie secondary ai eas.
For simplicity we use in these examples snowboards with circular sidecut, and symmetry along both the longitudinal and transversal central axis.
Total width Total width Length (6)-(8) Length (6)-(4) Sidecut at (8) at (6) radius.

Distance Total width Width of the 1. Width of each Cross sectional angle between from the tip base surface secondary first base and secondary areas areas z 6 7 8 150 290,0 140,0 75,0 3,5 1,0 2,0 3 200 283,3 133,3 75,0 3,1 0,8 1,9 2,7 250 277,2 127,2 75,0 2,7 0,6 1,8 2,4 300 271,6 121,6 75,0 2,3 0,4 1,7 2,1 350 266,6 116,6 75,0 1,9 0,2 1,6 1,8 400 262,0 112,0 75,0 1,6 0 1,5 1,6 450 258,0 108,0 75,0 1,3 0 1,4 1,4 500 254,6 104,6 75,0 1,0 0 1,2 1,2 550 251,7 101,7 75,0 0,7 0 0,9 1 600 249,3 99,3 75,0 0,4 0 0,6 0,8 650 247,4 97,4 75,0 0,2 0 0,3 0,6 700 246,1 96,1 75,0 0 0 0 0,4 750 245,3 95,3 75,0 0 0 0 0,2 800 245,0 95,0 75,0 0 0 0 0 850 245,3 95,3 75,0 0 0 0 0,2 900 246,1 96,1 75,0 0 0 0 0,4 950 247,4 97,4 75,0 0,2 0 0,3 0,6 1000 249,3 99,3 75,0 0,4 0 0,6 0,8 1050 251,7 101,7 75,0 0,7 0 0,9 1,0 1100 254,6 104,6 75,0 1,0 0 1,2 1,2 1150 258,0 108,0 75,0 1,3 0 1,4 1,4=
1200 262,0 112,0 75,0 1,6 0 1,5 1,6 1250 266,6 116,6 75,0 1,9 0,2 1,6 1,8 1300 271,6 121,6 75,0 2,3 0,4 1,7 2,1 1350 277,2 127,2 75,0 2,7 0,6 1,8 2,4 1400 283,3 133,3 75,0 3,1 0,8 1,9 2,7 1450 290,0 140,0 75,0 3,5 1,0 2,0 3,0 Where the angle is zero, the first base surface extend to the steel edges In these example the width of the scondary areas are chosen to be 75 mm, but it could just as well have been set at any value between 40 mm and 105 mm Table 3. Four examples of a snowboard with a variable widfh'oi th~ f-;rs*'base:sui-fzce.
For simplicity we use in these examples snowboards with circular sidecut, and symmetry along both the longitudinal and transversal central axis.
Total width Total width Length (6)-(8) Length (6)-(4) Sidecut at (8) at (6) radius Distance Total width Width of the 1. Width of each Cross sectional angle between from the tip base surface secondary first base and secondary areas areas 9 10 11 12 0.

150 280,0 40,0 120,0 2,0 0,8 1,2 1,8 200 273,6 50,0 111,8 1,8 0,6 1,1 1,6 250 267,8 60,0 103,9 1,6 0,4 1,0 1,4 300 262,5 70,0 96,2 1,4 0,2 0,9 1,2 350 257,8 80,0 88,9 1,2 0 0,8 1 400 253,6 90,0 81,8 1 0 0,7 0,8 450 250,0 100,0 75,0 0,8 0 0,6 0,6 500 246,9 110,0 68,5 0,6 0 . 0,5 0,4 550 244,4 120,0 62,2 0,4 0 0,4 0,3 600 242,5 130,0 56,2 0,2 0 0,3 0,2 650 241,1 140,0 50,6 0 0 0,2 0,1 700 240,3 150,0 45,1 0 0 0,1 0 750 240,0 160,0 40,0 0 0 0,0 0 800 240,3 150,0 45,1 0 0 0,1 0 850 241,1 140,0 50,6 0 0 0,2 0,1 900 242,5 130,0. 56,2 0,2 0 0,3 0,2 950 244,4 120,0 62,2 0,4 0 0,4 0,3 1000 246,9 110,0 68,5 0,6 0 0,5 0,4 1050 250,0 100,0 75,0 0,8 0 0,6 0,6 1100 253,6 90,0 81,8 1,0 0 0,7 0,8 1150 257,8 80,0 88,9 1,2 0 0,8 1,0 1200 262,5 70,0 96,2 1,4 0,2 0,9 1,2 1250 267,8 60,0 103,9 1,6 0,4 1,0 1,4 1300 273,6 50,0 111,8 1,8 0,6 1,1 1,6 1350 280,0 40,0 120,0 2,0 0,8 1,2 1,8 Where the angle is zero, the first base surface extend to the steel edges In these examples the width of the first base surface is chosen to be 40 mm at

(4) and (8) and then the width increases towards the middle.

Table 4. An example of an assymmetric snowboard ; , .
For simplicity we use in these examples snowboards with circular sidecut, Total width Total width Length (6)-(8) Length (6)-(4) Sidecut at (8) at (6) radius.

Distance Total width Width of the 1. Width of each Cross sectional angle between frorn the tip base surface secondary first base and secondary areas areas 50 ~ Rieht Left 150 255,0 80,0 87,5 2,8 2,4 200 250,5 80,0 85,2 2,6 2,3 250 246,3 80,0 83,1 2,4 2,2 300 242,4 80,0 81,2 2,2 2 350 238,8 80,0 79,4 2 1,8 400 235,6 80,0 77,8 1,8 1,6 450 232,6 80,0 76,3 1,6 1,4 500 230,0 80,0 75,0 1,4 1,2 550 227,6 80,0 73,8 1,2 1 600 225,6 80,0 72,8 1 0,8 650 223,9 80,0 71,9 0,8 0,6 700 222,5 80,0 71,2 0,6 0,4 750 221,4 80,0 70,7 0,4 0,2 800 220,6 80,0 70,3 0,2 0 850 220,2 80,0 70,1 0 0 900 220,0 80,0 70,0 0 0 950 220,2 80,0 70,1 0 0 1000 220,6 80,0 70,3 0 0 1050 221,4 80,0 70,7 0,2 0 1100 222,5 80,0 71,2 0,4 0,2 1150 223,9 80,0 71,9 0,6 0,4 1200 225,6 80,0 72,8 0,8 0,6 1250 227,6 80,0 73,8 1,0 0,8 1300 230,0 80,0 75,0 1,2 1,0 1350 232,6 80,0 76,3 1,4 1,2 1400 235,6 80,0 77,8 1,6 1,4 1450 238,8 80,0 79,4 1,8 1,6 1500 242,4 80,0 81,2 2,1 1,7 1550 246,3 80,0 83,1 2,2 1,8 Where the angle is zero, the first base surface extend to the steel edges In these example the width of the first base surface is chosen to be 80 mm, but it could just as well have been set at any value between 40 mm and 160 mm

Claims (8)

WHAT IS CLAIMED IS:

1. A snowboard comprising a board where two bindings are mounted on the board's upper surface at a distance apart corresponding to approximately 1/3 of the board's length, wherein the board is designed with inwardly curving edge portions, the width of the board being greater at both ends at the transition to the tips than in the middle where the minimum width is greater than 18 cm, with upturned tips, and possibly with a more moderate tip at one end, characterized in that:
a) the snowboard has a sole surface forming its gliding surface, which between the tips is divided in the length direction of the snowboard into 3 successive portions, the front portion, the central portion and the rear portion, which sole surface has a first or main area extending in the middle of the sole surface in its length direction through all three portions and is flat when the board is pressed down against the ground, the main area having a minimum width of 4 cm in the transverse direction of the snowboard over a length that is sufficient to define the flat surface;
b) on each side of the main arca, the sole surface of the snowboard includes secondary lateral areas, positioned in the front portion and the back portion, and at the transition to the tips, cach secondary lateral area is at least 4 cm wide;
c) the combined length of the secondary lateral areas, both in the front and rear portions on one side of the snowboard, is at least 1/10 of the length of the main surface;
d) the secondary lateral areas in cross section form substantially straight lines;
e) the secondary lateral areas are rigid and not in contact with the ground unless the board is edged;
f) the angle which the secondary lateral areas form with the main area, viewed in cross section of the snowboard, mostly increases when moving from the area at the center portion to the transition to the tips, and so that the secondary lateral areas or a substantially part thereof are twisted, being increasingly elevated from the ground when moving from the central portion to the transition lines to the tips.

2. A snowboard according to claim 1, characterized in that the width of the main area is at least 6 cm.

3. A snowboard according to any one of claims 1 and 2, characterized in that the combined length of the secondary lateral areas on one side is at least 1/5 of the length of the main area.

4. A snowboard according to any one of claims 1 to 3, characterized in that as the secondary lateral areas are twisted with respect to the plane of the main area, the angle formed by the secondary lateral areas with the main area, viewed in a cross section to the snowboard, increases over each 5 cm long interval of the secondary lateral area when displacing the cross section view from the central portion towards the transition to the tips.

5. A snowboard according to any one of claims 1 to 4, characterized in that the board is symmetrical about its longitudinal axis.

6. A snowboard according to any one of claims 1 to 5, characterized in that the board is asymmetrical about its longitudinal axis.

7. A snowboard according to any one of claims 1 to 6, characterized in that the board is symmetrical about its central transversal axis.

8. A snowboard according to any one of claims 1 to 7, characterized in that the board is asymmetrical about its central transversal axis.