WO1991004770A1 - Short, wide ski and binding - Google Patents
Short, wide ski and binding Download PDFInfo
- Publication number
- WO1991004770A1 WO1991004770A1 PCT/CA1990/000322 CA9000322W WO9104770A1 WO 1991004770 A1 WO1991004770 A1 WO 1991004770A1 CA 9000322 W CA9000322 W CA 9000322W WO 9104770 A1 WO9104770 A1 WO 9104770A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ski
- skier
- weight
- binding plate
- side edges
- 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
- A63C5/025—Short skis
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C9/00—Ski bindings
- A63C9/005—Ski bindings with means for adjusting the position of a shoe holder or of the complete binding relative to the ski
Definitions
- This invention relates to a ski, and more particularly, to a ski which may be used in a variety of snow conditions and more particularly, soft snow.
- Skiing has become an extremely popular sport for people of all ages.
- ski manufacturers design and construct skis which are optimised to accommodate skiing on these groomed hills.
- the present invention provides a ski which has the characteristic of facilitating maneuvers in the sport of skiing, including the turns of skiing downhill, the stepping movements required when walking on the flat, and the stepping movements required when climbing uphill with climbing skins or wax.
- the ski of the present invention is designed to remain closer the surface of soft snow when skiing downhill such that it will float, and plane, to allow foot steering. The tip of the ski will tend to remain out of the soft snow.
- the ski of the present design facilitates turning and stepping movements by decreasing the ski length, increasing the ski width, and also preferable by providing for a variation of the skier's centre of gravity in the fore and aft directions on the ski.
- the theory behind the invention is that in soft snow, when skiing downhill in order to be maneuverable, a ski must be short, yet it still must tend to stay near the surface, with the ski tips tending to remain out of the snow so as to in effect plane. The ski therefore, must not only be short, but must also have a large area for floatation.
- the present invention seeks to provide a deep snow ski which satisfies a longstanding need for a multipurpose or touring ski which can be used for cross-country skiing and yet will still allow the enjoyment of skiing downhill without resorting to the unnatural, uncomfortable, awkward, difficult, and dangerous maneuver referred to as telemarking.
- downhill skiing having a width, length and snow engaging surface area selected to accomplish, floating, planing and foot steering.
- the ski has a total width range from about 8 1/2 cms to about 15 1/2 cms for a total ski length from about 130 cms to 190 cms.
- the ski area is preferably in the range from about 1390 cm 2 to about 2485 cm 2 .
- a ski and binding plate combination wherein the binding plate is a thin flat plate having attachment means for receiving a ski boot binding.
- the binding plate and ski have interengageable flange and channel means along side edges of the ski for accommodating relative sliding movement of the binding plate and the ski while preventing separation of the binding plate in a direction normal to the upper
- Locking means is providing for releasably affixing the binding plate at different positions in the longitudinal direction of the ski.
- Figure 1 is a graph of the length verses width of a ski for a 75 kilogram skier, with certain performance characteristics being indicated;
- Figure 2 is a graph, which shows the acceptable range of length verses width of a ski, for skiers of different weights
- Figure 3 is a perspective view of the binding plate of the present invention.
- Figure 4 is a top view of the binding plate according to the present invention attached to a ski;
- Figure 5 is a side view of the binding plate of Figure 4.
- Figure 6 is a cross sectional view of the plate of Figure 5;
- Figure 7 is a view similar to Figure 6 of another embodiment of the invention.
- Figure 8 is a top view of yet another alternative embodiment of the binding plate
- Figure 9 is a side view of the binding plate of Figure 8.
- Figure 10 is a cross sectional view of the binding plate structure shown in Figure 9;
- Figure 11 is a cross section view of another embodiment of the binding plate of the present invention.
- Figure 12 is a cross section view of still a further embodiment of the present invention.
- Figure 13 is another cross section view of the embodiment.
- one aspect of the present invention resides in a ski which is shorter in length than normally used by downhill skiers .
- the ski of the present invention provides a sufficiently large snow engaging surface that floatation and planing is obtainable in soft snow and the skier is able to foot steer. Such action is not possible with skis which are commonly available and are longer and narrower than the skis of the present invention. Referring to following Table I, skis having the lengths, widths and snow engaging or bottom surface areas identified as A were found available in a well stocked ski shop.
- the preferred surface area of the ski of the present invention is approximately 1800 cm 2 and for lengths varying from 140 cm to a maximum of 170 cm, the preferred width therefore decreases from about 13 cm to about 10 1/2 cms as shown at B in Table I. It is with the combination of dimensions shown for the skis of group B in Table I that a 75 Kg skier obtains the above described skiing characteristics.
- ski determined by considering skier's weights in weight groups in spans of 20 kg each. While it might first seem that the ski could be designed to provide the desirable characteristics of the invention by determining an optimum ski area (cm) per Kg weight for all skiers, it was in fact found that for satisfactory results, the surface area of the ski in contact with the snow, which is taken as being the length from the rear end to tip, multiplied by the width, which is taken as the width at its widest point must be smaller for heavier persons than light weight skiers.
- Table II illustrates a break-down of skiers into weight groups of 45 to 65 Kg, 65 to 85 Kg, 85 to 105 Kg and 105 to 125 Kg which are logical intervals and appear to in total cover the weights of substantially all persons for which this type of ski would be marketed. For the sake of calculations it appears to be sufficiently accurate to work on the bases of an average weight of 55 Kg, 75 Kg, 95 Kg and 115 Kg for the four weight groups. Testing indicates that the approximate optimum snow engaging surface required to provide the above described skiing characteristics for the four specified weight groups are 1600 cm 2 , 1800 cm 2 , 2000 cm 2 and 2200 cm 2 , respectively but a variation of about
- Weight Groups group of 45 to 65 Kgs has the range of 1600 ⁇ 13%, which equals approximately 1390 cm 2 to 1810 cm 2 .
- the ranges for the other three groups are 1550 cm 2 to 2035 cm 2 , 1740 cm 2 to 2260 cm 2 , and 1915 cm 2 to 2485 cm 2 , respectively. It can be seen that the optimum surface area per kilogram of skier weight using the optimum ski surface A divided by the average weight
- the width W would be or a width of
- the range of lengths 130 cm to 160 cm for the weight group of 45 to 65, 140 cm to 170 cm for the weight group of 65 to 85, 150 cm to 180 cm for the weight group of 85 to 105, and 160 cm to 190 cm for the weight group of 105 to 125 appears most acceptable.
- the preferred widths for the selected lengths may also be calculated by the formula of width W equals Ski Surface Area, i.e. which
- Length for the second weight group i.e. the group of 65 to 85 Kgs, would give an optimum width of or
- FIG 2 graphically illustrates the results as calculated and tabulated in Tables III and IV.
- the shaded area generally denotes the overall acceptable L v W combinations.
- the arrow H shows the range of lengths for each Weight Group. It is clear, of course, that for skis of lengths between those specified, the range of widths could be obtained by interpolation.
- the double headed arrows J indicate the plotted lines, the shaded area between which is relevant for each weight group.
- the positioning of the skier's weight with respect to the length of the ski is also of importance. For example, if the skier's weight is centered too far to the rear, the heel of the ski will sink too far into the soft snow, to produce an undesirable braking effect, whereas if the skier's weight is too far forward, the front end or tip of the ski will sink, making skiing and walking and climbing difficult. Accordingly, in
- the present invention includes means to adjust the ski boot longitudinally on the ski.
- the adjustment is sufficiently simple that it can be performed by the skier on the slopes, to accommodate the snow conditions of the area being skied.
- FIG. 3 is a perspective view of an embodiment of the binding plate of the present invention.
- the binding plate shown generally at 10 includes forward and rearward, laterally extending portions or cross members 12, and integrally formed center member 14.
- the outer edges 16 of each cross member 12 are bent around the corner edge of the ski 20 so as to enter a groove 22 formed in the edge 24 of the ski.
- Groove 22 is formed by routing, or other means, which will produce a groove or channel along either side of the ski.
- An upper face 26 of a metal plate or the ski provides a rail 28 for each bent portion 16 to slide along.
- Center member 14 of binding plate 10 has a longitudinal slot 30 through which locking means generally shown at 32 passes
- Openings 34 in the binding plate 10 provides a means for attaching a normal ski binding 39 as best shown in Figures 5 and 6 which may be a conventional downhill ski binding or cross-country ski bindings.
- Locking means 32 as shown in Figure 5 comprises a hexagonal or knurled headed screw having a threaded portion 35 which mates with a helicoil in one of the openings 40.
- bindings attached thereto are located in the optimum position along the length of the ski depending on the snow conditions. Normally, it is not necessary to completely remove the locking screw 32 as considerable adjustment can be obtained due to the length of the slot 30. However, the additional openings 40 are provided to permit the locking screw 32 to be moved so as to provide more variations in the positioning of the binding plate. Also more than one locking screw can be used at one time to provide a stronger attachment against longitudinal slippage. Slot 30 may have in a preferred embodiment countersunk holes 37 ( Figure 4) which allow a head of the locking screw to seat therein so as to more securely lock the plate in the correct position.
- a pair of screws 42 are threaded into openings (not shown) in the ski on either side of the center member 14, and by which a small laterally extending strap or bridge member 43 is held down over the center member 42.
- This bridge has a small central projection 44 which mates with countersunk holes 45 in the center member, so that the binding plate may slide in a fore and aft direction when the screws 42 are loosened and then tightened after the adjustment of the under plate, and then may be locked to lock it on the ski in regularly located positions along the ski. If the ski does not have an upper metal plate
- binding plate 72 is seen to be of a similar shape to binding plate 12 shown in the previous embodiment, but the outer edges of the plate do not curl around the side of the ski
- angle members 74 are attached to the side of the ski by attachment means such as screws 76.
- the upper edge 75 of angle member 74 is bent inwardly to lie parallel to the upper face of the ski and spaced therefrom.
- the cross members 12 of the binding plate 72 are just slightly narrower than the width of the top surface of the ski so that the edges of the binding plate extends into the gap created by the bent over edge 75 of the angle member 74.
- Locking means similar to that previously described may be used in conjunct with in a slot (not shown) along central portion 14 of binding plate 72.
- FIG 12 is an illustration of an alternate embodiment for use with attachment means or locking screw 32 described.
- drill hole 51 has a threaded insert 50 glued or otherwise fixed into the hole.
- the insert 50 has a bore 52 which is internally threaded to receive the threaded portion 35 of locking screw 32 within the hole.
- Such an arrangement provides better wear characteristics to withstand repeated removal of the locking screw 32 during adjustment.
- the upper plate 26 is slightly wider than the top surface of the ski which allows groove 22 to be shallower than that of the embodiment of Figure 3. This feature of the shallower groove decreases any tendency of ski delamination and also reduces icing of the groove.
- steel inserts 50 are used in openings on either side of the central portion of the binding plate 10 to receive a pair of locking screws 32.
- the screws 32 pass through openings 65 at opposite ends of the bridge member 43 which has a downwardly projecting portion 44 for receipt in one of a number of openings 45 spaced longitudinally in the binding plate 10.
- the mounting of the binder plate on the ski must be such that it can move forwardly and rearwardly from the static balance point. It is preferable to have a total range of movement up to at least 15 cm. With the positioning of the slot and/or holes in the binder plate and the screw receiving holes in the ski being such that the tip of the boot can move at least 1 1/2 cm forward at the conventional boot position on the ski to an aft position of 13 1/2 cm.
- the embodiments of the present invention as described above are such that such exclusive movement can be obtained without structural stiffening of the ski which would be disadvantageous.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69019361T DE69019361T2 (en) | 1989-09-29 | 1990-09-28 | SHORT WIDE SKI AND BIND. |
EP90914042A EP0493452B1 (en) | 1989-09-29 | 1990-09-28 | Short, wide ski and binding |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA000615220A CA1332433C (en) | 1989-09-29 | 1989-09-29 | Ski structure and binding therefor |
CA615,220 | 1989-09-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991004770A1 true WO1991004770A1 (en) | 1991-04-18 |
Family
ID=4140882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CA1990/000322 WO1991004770A1 (en) | 1989-09-29 | 1990-09-28 | Short, wide ski and binding |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0493452B1 (en) |
AT (1) | ATE122247T1 (en) |
AU (1) | AU6436690A (en) |
CA (1) | CA1332433C (en) |
DE (1) | DE69019361T2 (en) |
WO (1) | WO1991004770A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2756747A1 (en) * | 1996-12-11 | 1998-06-12 | Look Fixations Sa | Fastener device for fixture element on ski |
US6184200B1 (en) | 1995-09-28 | 2001-02-06 | Amgen Inc. | Truncated glial cell line-derived neurotrophic factor |
EP1279421A1 (en) | 2001-07-25 | 2003-01-29 | Skis Rossignol S.A. | Interface and gliding board with such a device |
FR2849392A1 (en) * | 2002-12-31 | 2004-07-02 | Skis Dynastar | Support fixation retaining and adjusting device for use in snow sliding board e.g. ski, has longitudinal positional installation unit on ski for retaining support fixations within chosen position |
WO2004078286A1 (en) * | 2003-03-07 | 2004-09-16 | Tyrolia Technology Gmbh | Sliding board, particularly a ski |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3314687A (en) * | 1963-08-30 | 1967-04-18 | Robin F Tiesler | Adjustable ski binding |
FR2282823A1 (en) * | 1974-08-30 | 1976-03-26 | Salomon & Fils F | SKI BOOT DESIGNED TO MOVE FREELY AFTER RELEASE IN A BINDING INCLUDING A SIDE RETAINING JAW |
CA989435A (en) * | 1974-09-25 | 1976-05-18 | Alec Pedersen | Monoski |
GB2020184A (en) * | 1978-05-04 | 1979-11-14 | Bortoli E | Ski binding support plate |
AT372005B (en) * | 1981-05-22 | 1983-08-25 | Ski World Inc | SKI |
-
1989
- 1989-09-29 CA CA000615220A patent/CA1332433C/en not_active Expired - Fee Related
-
1990
- 1990-09-28 WO PCT/CA1990/000322 patent/WO1991004770A1/en active IP Right Grant
- 1990-09-28 AT AT90914042T patent/ATE122247T1/en not_active IP Right Cessation
- 1990-09-28 AU AU64366/90A patent/AU6436690A/en not_active Abandoned
- 1990-09-28 DE DE69019361T patent/DE69019361T2/en not_active Expired - Fee Related
- 1990-09-28 EP EP90914042A patent/EP0493452B1/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3314687A (en) * | 1963-08-30 | 1967-04-18 | Robin F Tiesler | Adjustable ski binding |
FR2282823A1 (en) * | 1974-08-30 | 1976-03-26 | Salomon & Fils F | SKI BOOT DESIGNED TO MOVE FREELY AFTER RELEASE IN A BINDING INCLUDING A SIDE RETAINING JAW |
CA989435A (en) * | 1974-09-25 | 1976-05-18 | Alec Pedersen | Monoski |
GB2020184A (en) * | 1978-05-04 | 1979-11-14 | Bortoli E | Ski binding support plate |
AT372005B (en) * | 1981-05-22 | 1983-08-25 | Ski World Inc | SKI |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6184200B1 (en) | 1995-09-28 | 2001-02-06 | Amgen Inc. | Truncated glial cell line-derived neurotrophic factor |
FR2756747A1 (en) * | 1996-12-11 | 1998-06-12 | Look Fixations Sa | Fastener device for fixture element on ski |
EP1279421A1 (en) | 2001-07-25 | 2003-01-29 | Skis Rossignol S.A. | Interface and gliding board with such a device |
FR2827787A1 (en) | 2001-07-25 | 2003-01-31 | Rossignol Sa | SUPPORT DEVICE FOR FIXING A SHOE AND SNOW SNOWBOARD EQUIPPED WITH SUCH A DEVICE |
FR2849392A1 (en) * | 2002-12-31 | 2004-07-02 | Skis Dynastar | Support fixation retaining and adjusting device for use in snow sliding board e.g. ski, has longitudinal positional installation unit on ski for retaining support fixations within chosen position |
EP1435257A1 (en) * | 2002-12-31 | 2004-07-07 | Skis Dynastar | Retaining and adjusting device for the longitudinal position of an snowboardbinding |
WO2004078286A1 (en) * | 2003-03-07 | 2004-09-16 | Tyrolia Technology Gmbh | Sliding board, particularly a ski |
US7497460B2 (en) | 2003-03-07 | 2009-03-03 | Tyrolia Technology Gmbh | Sliding board, particularly a ski |
Also Published As
Publication number | Publication date |
---|---|
DE69019361T2 (en) | 1996-02-08 |
AU6436690A (en) | 1991-04-28 |
EP0493452A1 (en) | 1992-07-08 |
CA1332433C (en) | 1994-10-11 |
ATE122247T1 (en) | 1995-05-15 |
DE69019361D1 (en) | 1995-06-14 |
EP0493452B1 (en) | 1995-05-10 |
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