US3871671A - Radial ski having a profiled running surface - Google Patents

Radial ski having a profiled running surface Download PDF

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Publication number
US3871671A
US3871671A US366615A US36661573A US3871671A US 3871671 A US3871671 A US 3871671A US 366615 A US366615 A US 366615A US 36661573 A US36661573 A US 36661573A US 3871671 A US3871671 A US 3871671A
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US
United States
Prior art keywords
ski
running surface
guide strip
edges
guide
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
Application number
US366615A
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English (en)
Inventor
Heinz Bildner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19722227980 external-priority patent/DE2227980A1/de
Priority claimed from DE19732309782 external-priority patent/DE2309782A1/de
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3871671A publication Critical patent/US3871671A/en
Priority to US05/771,836 priority Critical patent/USRE29659E/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • A63C5/048—Structure of the surface thereof of the edges
    • A63C5/0485—Complementary or supplementary ski edges
    • 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

  • a ski consists of a body or carrier, a running surface or sole and steel edges at both sides of the running surface.
  • the ski body is made up of layers or sheets of wood, steel and/or plastic, the running surface is formed by a plastic coat, and the steel edges are either bars of rectangular cross section inserted at both sides of the running surface or metal sectional material with a sharp outer edge embedded in the plastic.
  • skis have socalled running grooves to improve the tracking'properties of the ski.
  • a semi-circular fluting is provided which extends in the middle of the sole, in other cases, e.g., with jumping skis a plurality of parallel flutings are provided in the sole.
  • the running groove is known to design the running groove as a broad channel with rectangular cross section.
  • ski edges are known which comprise skids or have an edge profile that tapers outwardly, as seen in cross section, or have a hollow polished or ground section similar to skates. It is the purpose of these measures to improve the ski such that it will better maintain the direction determined by the skier, in other words hold the track better than is possible with smooth running surfaces.
  • An essential factor in considering the usefulness of a ski is the coordination between the steel edges and the elasticity of the ski.
  • the steel edges make it possible to bring the ski into engagement with the ground during a change of direction, i.e., when swinging or turning so that the skier can dominate the radial drift or sideslip during a swing, in other words keep it as small as possible.
  • the elastic properties of the ski should be chosen such that the steel edge will engage the ground approximately uniformly over its entire length upon a turn. This engagement of the steel edges during swinging or turning is necessary especially on trails or runs, above all on hard runs. With all the known skis only one steel edge will engage the ground in a turn during which the ski is slightly tilted inwardly. Any attempt made so far at improving this engagement was always directed at improving the elasticity of the ski.
  • the invention meets this object by the provision of a ski having at least one guide strip at both sides which forms another edge, projects laterally beyond the respective edge of the running surface, and has this lateral projection diminish from the middle of the ski towards the tip and tail ends.
  • the projection preferably amounts to zero in the area of the tip and tail ends of the ski, in other words near the ends there is only one effective steel edge at each side of the ski, while there are two or more steel edges at each side in the area of the middle of the ski which enter :into engagement during a turn.
  • a ski according to the invention may also be furnished with plastic edges instead of steel edges, provided the plastic edges are of the required strength.
  • the radial drifting or side slipping of the ski during a swing can also be kept smaller without, how ever, causing the ski tip and tail ends to dig, i.e., to establish too strong an engagement with the ground.
  • Any possible greater stress'on the strength of the ski may be balanced in accordance with the invention by the provision of hollow spaces extending side by side along the ski throughout the body. These may be formed by pipes or tubes or other forms of hollows which may have condensed or compacted rims, if desired.
  • a ski according to the invention can be turned more easily if the running surface is shaped so as to be slightly convex outwardly, in other words crowned in the area of the middle of the ski.
  • this running surface may be arranged for replacementby being slidable between the two steel edges of the lowest guidestrip.
  • the running surface of the ski has concave shape, as seen in cross section, in the range of the forward third of the length of the ski, i.e., near the shovel. This provides for further improvement of the tracking quality of the radial ski according to the invention.
  • FIG. 1 is a perspective view of a radial ski in accordance with the invention
  • FIG. la is a perspective view and a section view of the end of the ski
  • FIGS. 2a, 2b, 3a, 3b, 4a, 4b, and 5a, 5b are cross sectional and part sectional views, respectively, of skis according to the invention, each figure marked with an a referring to a section taken in the area of line II in FIG. 1, and each figure marked with a b referring to a section taken in the area of line 11-11 in FIG. 1,
  • FIG. 6 is an exploded view of a cut through the middle of a ski according to the invention having three edges at each side and showing the laminated structure of the ski,
  • FIGS. 7 to 9 are cross sectional views through the middle of various embodiments of skis according to the invention.
  • FIG. 10 represents an embodiment of the invention having a crowned running surface.
  • a ski l in accordance with the invention is provided in its central portion with a guide strip 2 having its degree of projection diminish according to the invention towards the shovel 3 and tail 5, as shown in FIG. 1.
  • the guide strip 2 is shown in section in the area where its projection is the greatest. The distance by which the guide strip 2 projects in this area is marked a.
  • FIG. 2b shows a section along line IIII, and it is obvious that in this area the degree of projection b is much less already and will become approximately zero at position 4. The same is true of position 5 at the end of the ski.
  • the guide strip 2 is superposed at both sides over the steel edge 6, the degree of projection 7 diminishing lengthwise of the ski. Both sectional steel edges 6 and 7 are embedded in the body 8 of the ski.
  • the running surface 9 extends between the steel edges 6, 6. As may be seen from FIG. 2b the running surface has concave shape in the front portion of the ski.
  • the guide strip 2' is in the form of a continuous metal layer, its projections 7', 7 diminishing towards the tip and tail ends of the ski.
  • the guide strips 2" are of uniform width throughout and are merely inserted to different extents into the body 8 of the ski. During assembly of the ski resin may be cast into the remaining spaces 10 and 10' in the recesses for the guide strips.
  • An alternative solution provides for fixing this guide strip by screws so that the extent of projection a or b is adjustable.
  • FIGS. 5a and 5b show an embodiment with which the guide strip 2" may be attached subsequently to the outside of the ski by fastening means 11.
  • FIG. 6 The embodiment of the invention shown in FIG. 6 comprises a body 8 having three edges at each side. Of these three edges the lowest one 13, 14 on each side may be tapering.
  • the running surface 9 is limited by the steel edges 13 and 14.
  • the body 8 is composed of a plastic casing 15 and ofa core 16 likewise made of plastic and including hollow sections 17 in accordance with the invention. Such hollow sections may be obtained by the installation of pipes or tubes or by cavities of any desired cross sectional shape having edges or rims 17 which consist of the hardened and/or condensed plastic material of the carrier.
  • two projecting guide strips 19 and 20 are provided, each being defined by separate steel edges 21 and 22 and 23 and 24, respectively.
  • FIG. 8 is a diagrammatic sectional view of the structure shown perspectively in FIG. 6.
  • the radial drift (arrow 26) can be kept much smaller, due to the engagement of the three steel edges, than in cases where there is only one steel edge. Moreover, during schussing and on hard runs the ski will move only on the running surface 9, which means that the frictional resistance is considerably decreased without affecting the strength of the ski since the body 8 itself corresponds to the full width of the ski.
  • the guide strip has nearly the same width as the running surface 9.
  • the embodiment shown in FIG. 9 comprises a guiding groove 28.
  • FIG. 10 shows an embodiment of the invention with which an outwardly convex or crowned running surface 9 is slidably engaged between steel edges 31 and 32 provided with undercuts 41 and 40, respectively.
  • the curvature of the crowned running surface preferably decreases towards the middle of the running surface.
  • the curvature as illustrated in FIG. 10 is exaggerated.
  • the dimension c determined by the degree of curvature of the running surface is between 0.2 and 1 millimeter, preferably between 0.3 and 0.5 millimeters.
  • FIGS. 2a and 5b and 7 to 10 the body 8 is merely shown diagrammatically in section. All steel edges are marked by narrower hatching.
  • a ski having a profiled running surface which is symmetric to the longitudinal axis of the ski and defined at both sides by edges of wear-resistant material, characterized in that at least one guide strip is provided at each side of the ski forming a further edge projecting laterally over an edge of wear-resistant material, in that each said guide strip extends in excess of one-half the longitudinal length of the ski, and in that each said guide strip has its lateral projection diminished continuously from the middle of the ski towards the tip end and tail end thereof.
  • each of said guide strips has a vertical extending portion superimposed over a portion of a lateral end of an edge of wear-resistant material.
  • a ski as claimed in claim 1 characterised in that the guide strips are strips of uniform width and thickness throughout their extension and are inserted to different degrees into a groove in the ski.
  • a ski as claimed in claim 1 characterised in that the guide strips are angular strips secured to the side walls of the body of the ski.
  • a ski as claimed in claim 1 characterised in that two superposed guide strips of symmetric design with respect to the center plane of the ski are provided, the guide strip arranged directly above the running surface being narrower than the second guide strip arranged on said first guide strip.
  • a ski as claimed in claim 1 comprising a carrier provided with a casing, characterised in that one or several parallel sectional hollows are included in the carrier.
  • a ski as claimed in claim 8 characterised in that the running surface is arranged to be slid between steel edges provided with undercuts.
  • a ski as claimed in claim 1 characterised in that the running surface is of concavely curved cross sectional shape in the area of the shovel and of flat cross sectional shape in the middle of the ski.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US366615A 1972-06-08 1973-06-04 Radial ski having a profiled running surface Expired - Lifetime US3871671A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/771,836 USRE29659E (en) 1972-06-08 1977-02-24 Radial ski having a profiled running surface

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19722227980 DE2227980A1 (de) 1972-06-08 1972-06-08 Radial-ski mit profilierter laufsohle
DE19732309782 DE2309782A1 (de) 1973-02-27 1973-02-27 Radial-ski mit profilierter laufsohle

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/771,836 Reissue USRE29659E (en) 1972-06-08 1977-02-24 Radial ski having a profiled running surface

Publications (1)

Publication Number Publication Date
US3871671A true US3871671A (en) 1975-03-18

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ID=25763399

Family Applications (1)

Application Number Title Priority Date Filing Date
US366615A Expired - Lifetime US3871671A (en) 1972-06-08 1973-06-04 Radial ski having a profiled running surface

Country Status (4)

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US (1) US3871671A (OSRAM)
AT (1) AT328350B (OSRAM)
CH (1) CH569493A5 (OSRAM)
FR (1) FR2187371B1 (OSRAM)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182520A (en) * 1978-07-24 1980-01-08 Stevenson Richard L Skateboard structure
US4752082A (en) * 1985-05-08 1988-06-21 David Sevington Skis
US4838571A (en) * 1985-05-08 1989-06-13 David Sevington Skis
US5083810A (en) * 1991-01-22 1992-01-28 Minidis James D Dougle edge snow ski
US5303949A (en) * 1993-04-26 1994-04-19 Harper Luke J Multi-edged downhill snow skis
EP0729372A4 (en) * 1993-11-12 1999-12-01 Mark D Vance DOUBLE EDGED SNOWBOARD
US6062585A (en) * 1993-04-27 2000-05-16 Hess; Eugen Ski construction
US6193244B1 (en) 1998-10-26 2001-02-27 Mark D. Vance Dual edge snowboard with straight edge portions
US20030122350A1 (en) * 2001-06-15 2003-07-03 Vance Mark D. Surface traversing apparatus with stepped running surface
US20030151215A1 (en) * 2000-12-08 2003-08-14 Aaron Stief Sliding device
US20040169349A1 (en) * 2001-04-18 2004-09-02 Park Young-Soo Snowboard, ski and upper edge fixing metal
US20050218628A1 (en) * 2004-03-31 2005-10-06 Christian Haas Snow glide board, in particular a snowboard or ski
US20060043696A1 (en) * 2004-09-02 2006-03-02 Alan Trimble Ski with replaceable edge
US20060043697A1 (en) * 2004-09-02 2006-03-02 Graham Sommer Snow ski with slotted edges
US20070132199A1 (en) * 2005-12-09 2007-06-14 Shane Smith Articulated two-piece snowboard with rigid, flexible connector
US20070222187A1 (en) * 2006-03-23 2007-09-27 Fischer Gesellschaft M.B.H. Ski structure
US20100013191A1 (en) * 2008-07-15 2010-01-21 Mckeever Nathaniel W Performance enhanced snowboard
US20110148074A1 (en) * 2005-12-09 2011-06-23 Shane Smith Articulated Two-piece Snowboard With Rigid, Flexible Connector
JP2011235047A (ja) * 2010-04-30 2011-11-24 Takechiyo Tachibana ダブルエッヂスキ−板
US20120292886A1 (en) * 2009-12-24 2012-11-22 Ulf Morgan Friberg Edges for skis, snowboards and ice skates
US20130307232A1 (en) * 2012-04-11 2013-11-21 Neil Pryde Limited Board for water sport or snow sport and a method of manufacturing thereof
US20140110910A1 (en) * 2012-10-19 2014-04-24 Nicholas Gilson Snowboard
US9120003B2 (en) 2013-08-19 2015-09-01 Gilson Boards, Llc Snowboard
RU2650273C1 (ru) * 2017-02-27 2018-04-11 Владимир Витальевич Кисляков Горная лыжа

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1505092A (en) * 1976-05-21 1978-03-22 Ford H Skis
FR2390975A1 (fr) * 1977-05-20 1978-12-15 Kreyenbuhl Armand Ski, en particulier ski de fond
FR2615746B1 (fr) * 1987-05-27 1990-02-16 Rossignol Sa Ski de descente et procede de fabrication de ce ski
FR2628646A1 (fr) * 1988-03-18 1989-09-22 Montimart Pierre Ski a semelles et carres multiples
EP0530395A1 (de) * 1991-09-04 1993-03-10 Karl Schimanek Ski mit zusätzlichem Seitenkantenprofil
DE4240380A1 (de) * 1992-12-01 1994-06-09 Wirnsberger Peter Ski mit Doppelkante
DE19548998A1 (de) * 1995-12-28 1997-07-03 Dietrich Dipl Ing Wertz Skisportgeräte
DE29904522U1 (de) 1999-03-12 1999-06-02 Peukert, Erwin, 95485 Warmensteinach Wintersportgerät, insbesondere Ski
FR2799383B1 (fr) * 1999-10-06 2001-11-23 Rossignol Sa Ski, ou autre planche de glisse sur neige telle qu'un surf
DE10123674B4 (de) * 2001-05-16 2005-11-10 Stahlwerk Ergste Westig Gmbh Gleitkantenprofil

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063728A (en) * 1960-05-05 1962-11-13 Albert S Patterson Ski attachment

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1193933A (OSRAM) * 1957-03-29 1959-11-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063728A (en) * 1960-05-05 1962-11-13 Albert S Patterson Ski attachment

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182520A (en) * 1978-07-24 1980-01-08 Stevenson Richard L Skateboard structure
US4752082A (en) * 1985-05-08 1988-06-21 David Sevington Skis
US4838571A (en) * 1985-05-08 1989-06-13 David Sevington Skis
US5083810A (en) * 1991-01-22 1992-01-28 Minidis James D Dougle edge snow ski
US5303949A (en) * 1993-04-26 1994-04-19 Harper Luke J Multi-edged downhill snow skis
US6062585A (en) * 1993-04-27 2000-05-16 Hess; Eugen Ski construction
EP0729372A4 (en) * 1993-11-12 1999-12-01 Mark D Vance DOUBLE EDGED SNOWBOARD
US6193244B1 (en) 1998-10-26 2001-02-27 Mark D. Vance Dual edge snowboard with straight edge portions
US20030151215A1 (en) * 2000-12-08 2003-08-14 Aaron Stief Sliding device
US20040169349A1 (en) * 2001-04-18 2004-09-02 Park Young-Soo Snowboard, ski and upper edge fixing metal
US20030122350A1 (en) * 2001-06-15 2003-07-03 Vance Mark D. Surface traversing apparatus with stepped running surface
US20050218628A1 (en) * 2004-03-31 2005-10-06 Christian Haas Snow glide board, in particular a snowboard or ski
US7390009B2 (en) * 2004-09-02 2008-06-24 Armada Skis, Inc. Ski with replaceable edge
US20060043696A1 (en) * 2004-09-02 2006-03-02 Alan Trimble Ski with replaceable edge
US20060043697A1 (en) * 2004-09-02 2006-03-02 Graham Sommer Snow ski with slotted edges
US20110148074A1 (en) * 2005-12-09 2011-06-23 Shane Smith Articulated Two-piece Snowboard With Rigid, Flexible Connector
US8579301B2 (en) 2005-12-09 2013-11-12 Shane Smith Articulated two-piece snowboard with rigid, flexible connector
EP1993683A4 (en) * 2005-12-09 2009-04-15 Trakboard Corp ROLLING SECONDARY SNOWBOARD WITH RIGID, FLEXIBLE CONNECTORS
US20070132199A1 (en) * 2005-12-09 2007-06-14 Shane Smith Articulated two-piece snowboard with rigid, flexible connector
US7896365B2 (en) 2005-12-09 2011-03-01 Trakboard, Corporation Articulated two-piece snowboard with rigid, flexible connector
US7758061B2 (en) * 2006-03-23 2010-07-20 Fischer Gesellschaft Mbh Ski structure
US20070222187A1 (en) * 2006-03-23 2007-09-27 Fischer Gesellschaft M.B.H. Ski structure
US20100013191A1 (en) * 2008-07-15 2010-01-21 Mckeever Nathaniel W Performance enhanced snowboard
US20120292886A1 (en) * 2009-12-24 2012-11-22 Ulf Morgan Friberg Edges for skis, snowboards and ice skates
JP2011235047A (ja) * 2010-04-30 2011-11-24 Takechiyo Tachibana ダブルエッヂスキ−板
US20130307232A1 (en) * 2012-04-11 2013-11-21 Neil Pryde Limited Board for water sport or snow sport and a method of manufacturing thereof
US20140110910A1 (en) * 2012-10-19 2014-04-24 Nicholas Gilson Snowboard
US9108101B2 (en) * 2012-10-19 2015-08-18 Gilson Boards, Llc Snowboard
US9120003B2 (en) 2013-08-19 2015-09-01 Gilson Boards, Llc Snowboard
US9352212B2 (en) 2013-08-19 2016-05-31 Gilson Boards, Llc Snowboard
USRE47898E1 (en) 2013-08-19 2020-03-10 Gilson Boards, Llc Board for carrying a person across snow
RU2650273C1 (ru) * 2017-02-27 2018-04-11 Владимир Витальевич Кисляков Горная лыжа

Also Published As

Publication number Publication date
ATA471873A (de) 1975-05-15
CH569493A5 (OSRAM) 1975-11-28
AT328350B (de) 1976-03-10
FR2187371B1 (OSRAM) 1979-10-05
FR2187371A1 (OSRAM) 1974-01-18

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