WO1991002571A1 - Ski or snowboard consisting of a plurality of layers - Google Patents
Ski or snowboard consisting of a plurality of layers Download PDFInfo
- Publication number
- WO1991002571A1 WO1991002571A1 PCT/DE1990/000553 DE9000553W WO9102571A1 WO 1991002571 A1 WO1991002571 A1 WO 1991002571A1 DE 9000553 W DE9000553 W DE 9000553W WO 9102571 A1 WO9102571 A1 WO 9102571A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ski
- elastic insert
- snowboard
- cavities
- snowboard according
- 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
- A63C5/12—Making thereof; Selection of particular materials
- A63C5/122—Selection of particular materials for damping purposes, e.g. rubber or the like
-
- 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
- A63C5/044—Structure of the surface thereof of the running sole
-
- 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
- A63C5/056—Materials for the running sole
Definitions
- Multi-layer ski or snowboard are Multi-layer ski or snowboard.
- the invention relates to a cross-section of ski or snowboard; it affects 5 both Aipin cross-country and any type of special ski, e.g. B. a jump ski.
- Boundary layer wave that arises when turbulence begins and dampens it. This suppresses those dangerous harbingers of turbulence.
- the skin which is only around 1.5 mm thick, is optimally designed for this special task. It consists of a 0.5 mm thick, foldable membrane and an underlying 1 mm thick, elastically deformable damping layer, which consists of 80% water. This water can flow in the finest channels parallel to the surface. Underneath is the approximately 6 mm thick inner skin, which consists of very strong and tough tissue. Vibrations in the boundary layer are transferred to the damping layer via the soft outer skin, where the water flows through the narrow channels in the event of deformation other areas must flow. The tiny channel diameters slow down the inner flow of water in this layer and dampen the vibrations, similar to a car shock absorber. These are all passive processes that take place automatically under the current conditions and are not nervously influenced by the dolphin. "
- the invention is based on the finding that processes similar to those of the dolphin moving in the water also take place in skiing. This is because a film of water forms on the tread of the ski, which is subject to turbulence and thus exerts a braking effect on the ski.
- the formation of such turbulence can now be suppressed in a manner analogous to that of the dolphin if, in the case of a multi-layer ski or snowboard whose bottom layer forming the outsole covering is laterally delimited by the steel edges, according to the invention in order to maintain a laminar flow around the ski during an elastic insert simulating the flow-dampening skin of a dolphin is inserted between the outsole covering and the layered ski or snowboard body, thereby compensating for turbulence arising from the meltwater during the run on the outsole covering.
- damping layers do not fulfill the task and solution on which the invention is based, which consists in a technical simulation of the dolphin skin to improve the flow behavior between the ski body and the base (snow).
- the tread covering corresponds to the outer skin of the dolphin, the tension belt to the inner skin.
- an elastic insert made of rubber or elastomer material, which can either be solid, perforated or profiled.
- the chambers or channels formed can be filled with a compressible medium (gas or liquid); they are expediently designed in such a way that they are interconnected.
- An elastic insert made of foam rubber or cellular rubber has proven to be particularly advantageous, two types of rubber which are built up in a cell-like manner like a sponge.
- Foam rubber is primarily thought of as a product commercially available under the designation NR, while cell rubber is considered as a product commercially available under the designation NRB.
- the Shore hardness A of this elastic insert should advantageously have a value between 10 and 90, preferably 35.
- the elastic insert When using the proposed materials for the elastic insert, they can have a thickness of 0.5 to 3 mm, preferably between 1.5 and 2 mm. They are inserted, preferably glued, between the wide legs of the steel edge profiles. So that these strengths are practicable, it is further recommended that the layered ski or snowboard body on the side of the pull or lower flange of the ski or snowboard has a groove running in the longitudinal direction of the ski, into which the elastic insert is inserted or glued.
- Such a tread structure can be provided in any length, up to a maximum of the entire ski length.
- the elastic insert made of solid material z. B. from If there is foam rubber or cellular rubber, the flow turbulence occurring on the outsole covering is damped by displacing the air inclusions in the elastic insert (foam or cellular rubber) in the same way as the displacement of the water particles in the damping layer of the dolphin skin.
- the elastic insert can also be designed as a hollow chamber profile, the cavities of which are preferably connected to one another.
- the elastic insert can have a corrugated cross-sectional profile with cavities in the longitudinal direction of the ski; in this case too, the cavities are preferably interconnected.
- the elastic insert can have a single-sided or double-sided nub cross-sectional profile, which can be regarded as particularly advantageous in terms of saving weight.
- 1 is a cross section through a ski profile with a simple rubber insert made of solid material
- FIG. 2 shows a cross section through a ski profile with an elastic insert designed as a hollow chamber
- 3 is a ski profile with a corrugated design of the elastic insert
- 4 is a ski profile with a nub-like design of the elastic insert
- FIG. 6 shows a ski profile with a groove running in the longitudinal direction of the ski in the layered ski body.
- Ski body with l the pressure belt with 2, the tension belt with 3, the steel edges with 4 and the outsole covering with 5.
- a rubber insert 7 is located between the tension belt 3 and the steel edges 4.
- An elastic insert 6 is now inserted, preferably glued, between the outsole covering 5 and the tension belt 3, which in the embodiment according to FIG. 1 consists of foam or cellular rubber, which expediently has a Shore hardness between 10 and 90, preferably 35.
- This elastic insert has a thickness between 0.5 and 3 mm, preferably between 1.5 and 2 mm.
- the elastic insert 6 is designed as a hollow chamber profile
- Hollow chambers are designated by 8. They are closed at their ends, but have connections between them.
- FIG. 3 shows an embodiment in which the elastic insert 6 is designed as a corrugated profile. In this case too, the cavities of the corrugated profile are interconnected.
- 4 shows an embodiment in which the damping layer has knobs on one side, so that there are cavities 9 between the individual knobs. These knobs can also be arranged on both sides.
- FIG. 5 shows an embodiment in which the elastic insert 6 is perforated.
- the punched holes are labeled 10.
- the ski body 1 is provided with a groove 11 running in the longitudinal direction of the ski, into which the lower flange 3 and then the elastic insert 6 is inserted. It can be glued in or just inserted.
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Road Paving Structures (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19893927323 DE3927323A1 (en) | 1989-08-18 | 1989-08-18 | Multilayer ski or snow-board - has its bottom layer forming tread surface with side steel edges, and has elastic inlay |
DEP3927323.7 | 1989-08-18 | ||
DE8915277 | 1989-12-30 | ||
DEG8915277.8U | 1989-12-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991002571A1 true WO1991002571A1 (en) | 1991-03-07 |
Family
ID=25884143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1990/000553 WO1991002571A1 (en) | 1989-08-18 | 1990-07-20 | Ski or snowboard consisting of a plurality of layers |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0439563A1 (en) |
JP (1) | JPH03504683A (en) |
CA (1) | CA2039154A1 (en) |
WO (1) | WO1991002571A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2665530A2 (en) * | 2011-01-19 | 2013-11-27 | Flow Sports Inc. | Sports board having deformable base feature |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1111049B (en) * | 1959-07-28 | 1961-07-13 | Coleman Kramer Inc | Device to achieve a laminar boundary layer |
DE3723974A1 (en) * | 1987-07-20 | 1989-02-02 | Trak Sportartikel Gmbh | Ski, namely a cross-country or touring ski |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA995265A (en) * | 1973-07-18 | 1976-08-17 | Olin Corporation | Vibration damped ski |
JPS5152038A (en) * | 1974-10-31 | 1976-05-08 | Nippon Musical Instruments Mfg | SUKII |
JPS5498831A (en) * | 1978-01-18 | 1979-08-04 | Nippon Gakki Seizo Kk | Ski plate with characteristic variable center core |
JPS5745021U (en) * | 1980-08-25 | 1982-03-12 | ||
AT378479B (en) * | 1983-12-09 | 1985-08-12 | Kaestle Gmbh | SKI |
JPS6236713A (en) * | 1985-08-09 | 1987-02-17 | Matsushita Electric Ind Co Ltd | Production of magnetic head |
-
1990
- 1990-07-20 WO PCT/DE1990/000553 patent/WO1991002571A1/en not_active Application Discontinuation
- 1990-07-20 CA CA 2039154 patent/CA2039154A1/en not_active Abandoned
- 1990-07-20 EP EP19900910559 patent/EP0439563A1/en not_active Withdrawn
- 1990-07-20 JP JP51041690A patent/JPH03504683A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1111049B (en) * | 1959-07-28 | 1961-07-13 | Coleman Kramer Inc | Device to achieve a laminar boundary layer |
DE3723974A1 (en) * | 1987-07-20 | 1989-02-02 | Trak Sportartikel Gmbh | Ski, namely a cross-country or touring ski |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2665530A2 (en) * | 2011-01-19 | 2013-11-27 | Flow Sports Inc. | Sports board having deformable base feature |
EP2665530A4 (en) * | 2011-01-19 | 2014-09-24 | Flow Sports Inc | Sports board having deformable base feature |
US9669284B2 (en) | 2011-01-19 | 2017-06-06 | Nidecker, S.A. | Sports board having deformable base feature |
Also Published As
Publication number | Publication date |
---|---|
EP0439563A1 (en) | 1991-08-07 |
CA2039154A1 (en) | 1991-02-19 |
JPH03504683A (en) | 1991-10-17 |
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