US3821064A - Man-made ski slopes - Google Patents

Man-made ski slopes Download PDF

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Publication number
US3821064A
US3821064A US00241228A US24122872A US3821064A US 3821064 A US3821064 A US 3821064A US 00241228 A US00241228 A US 00241228A US 24122872 A US24122872 A US 24122872A US 3821064 A US3821064 A US 3821064A
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Prior art keywords
ski slope
artificial ski
members
elements
artificial
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Expired - Lifetime
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US00241228A
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English (en)
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F Cima
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Individual
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Individual
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C13/00—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds
    • E01C13/10—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds for artificial surfaces for outdoor or indoor practice of snow or ice sports
    • E01C13/12—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds for artificial surfaces for outdoor or indoor practice of snow or ice sports for snow sports, e.g. skiing or ski tow track
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23907—Pile or nap type surface or component
    • Y10T428/23929—Edge feature or configured or discontinuous surface
    • Y10T428/23936—Differential pile length or surface

Definitions

  • ABSTRACT A linear plastic structural shape, supporting the stems, having a width comprised between 0,4 and 2 cm and is arranged with like shapes so as to form a discontinuous surface defined by suitable geometrical figures which are variable depending on. the type of sking for which the surface is designed.
  • the linear shape has a rounded off upper surface or inclined walls.
  • the discontinuous sliding surface is provided with empty or lightening zones of limited surface area which are delimited by the aforesaid shapes consisting of plastic and supporting the stems.
  • the flexible stems consisting also of plastic material, are fixedly secured perpendicular to the plastic shape, and have a conical, fractionated or feathered configuration, with the upper apexes rounded off, the length and width of the stems depending upon the type of skiing to be performed.
  • the stems may be of the same or different lengths and may be joined or connected to each other at their upper ends.
  • This invention relates to man-made ski slopes, consisting of plastic shapes, and more particularly to a plastic shape, provided with a plurality of flexible stems, disposed orthogonally to the support plane of the shape itself.
  • This shape is particularly adapted for building manmade ski slopes for ski sporting purposes.
  • the ski slopes further generally have an excessive surface stiffness, which may lead to accidents in case of falls.
  • ski slope consisting of a novel structural shape, supporting the stems, having such a surface flexibility as to insure maximum safety in case of falls and having empty or lightening zones of limited surface area.
  • a discontinuous sliding surface provided with empty or lightening zones 14 of limited surface area which are delimited by the aforesaid shapes consisting of plastic and supporting the stems;
  • flexible stems consisting also of plastic material, which are fixedly secured perpendicular to the plastic shape and have a conical, fractionated or feathered configuration with the upper apexes rounded off, and the length and width of which vary depending upon the type of skiing to be performed, the stems having, in the same track portion, either equal or suitably different lengths.
  • the linear plastic structural shape according to the present invention is preferably shaped like equilateral triangles of appropriate dimensions, in which there are possibly inscribed further equilateral triangles depending on the sliding characteristics which are to be imparted to the ski slope.
  • the structural shape according to this invention may be shaped so as to have a quadrilateral shape inside which two diagonal lines, or two lines disposed at the symmetry axes, or several lines which are symmetrical, orthogonal and parallel to the sides of the square itself, may be present.
  • the same structural shapes may also show a rectangular shape, or even other regular or irregular geometrical configurations, in which other structural shapes may be defined serving to form differing geometrical shapes inside the former ones.
  • All the aforesaid types of composite structural shapes may be obtained in continuous strip form by using a die-casting process or by casting under deep vacuum melting.
  • the ski slope as a whole is obtained by using a suitable number of the aforementioned continuous strips in relation to the width which is to be imparted to the ski slope itself.
  • connection of different strips is preferably carried out by means of heat-pressure welding so as to obtain a perfectly compact basic structure.
  • the upper surface of the plastic structural shape supporting the stems appears rounded off, namely it may be for example of a semi-circular, semi-elliptical, semioval or even triangular shape so that the ferrule of the ski pole cannot enter and penetrate the base of the structural shape, but slides thereover.
  • the stems with which the structural shape is provided, have excellent elasticity even in torsion, good flexibility and high hysteresis.
  • the ends of the stems themselves are further subjected to a flaming treatment, namely to heating in the presence of a flame at low or medium temperature.
  • the flaming treatment permits a particular spherical head finish to be imparted to the ends, thereby simultaneously making the stems more flexible and imparting to them good sliding characteristics.
  • the stems may be either single or double stems and may be arranged side-by-side within a limited number of rows so as to allow a constant good sliding of the ferrules of the ski poles.
  • FIG. 1 is a perspective view of a man-made ski slope according to the present invention
  • FIG. 2 represents a schematic view of the cross section of the ski slope in FIG. 1 in a plane through the line A-A;
  • FIG. 3 is a perspective view of a ski slope provided with parallel double stems
  • FIG. 4 is a view of one of the various forms of basic structures, obtainable from the aforesaid structural shapes;
  • FIGS. 5a, 5b, 5c and 5d represent views of further possible arrangement of the structural shapes for building up a ski slope according to the present invention
  • FIGS. 6, 7 and 8 are a perspective side views of plastic structural shapes, supporting one, two or three bristles, respectively, and having a suitably curved profile;
  • FIG. 9 represents, in side view, various stem types which are differently fractionated at their upper ends
  • FIG. 10 shows two side views of feathered stems, that is to say, stems provided with a base, fractionated intermediate portions and a unitary upper portion;
  • FIG. 11 illustrates stems of a different heights.
  • the man-made ski slope according to the present invention includes a linear plastic structural shape 1, supporting the stems 4 and variously coordinated with other like structural shapes so as to build a structure, showing a preferably regular geometrical configuration.
  • the above-mentioned linear plastic structural shape 1, supporting the stems 4 is characterized in that it shows a lower flat support surface 2 and an upper curved surface 3.
  • such surface 3 of the plastic structural shape I may have a semi-circular, or semielliptical or triangular configuration so that the ferrule of the ski poles is not allowed to enter the body of the structural shape itself, but slides thereover.
  • the linear plastic structural shape I is provided with a plurality of flexible stems 4, consisting also of plastic material, fused with the structural shape itself and disposed perpendicularly to the latter at the upper surface
  • the stems preferably have a conical configuration with the upper apex 5 rounded off so as to promote the sliding of the skis.
  • the supporting structural shape ll may be provided with parallel pairs of stems 6 and 6 arranged side-by-side, having the same base and having their upper apexes rounded off (FIG. 3).
  • the stems 4 may be fractionated into several bristles 11 at their upper ends as depicted in FIG. 9.
  • FIG. 11 there are depicted, in side view, some stems 4' and 4" having different lengths.
  • the aforesaid structural shape may also be made up of squares 9 and 9 (FIGS. 5a and 50) or of a rectangular shape subdivided into triangles 10 and 10' (FIGS. 5b and 5d).
  • connection between the various individual tracks to build up a ski slope of the required dimensions may be carried out by a heat-pressure welding.
  • the width of the plastic structural shape 1, supporting the stems 4 may vary between 0.4 and 2 cm. as a function of the type of skiing to be performed and the results desired; the limited width, together with the particular configuration of the structural shape prevent the ferrules of the ski poles from penetrating the structural shape itself which may damage the latter and cause injurious falls of the skiers.
  • the thus obtained ski slope has excellent elasticity characteristics, including torsional elasticity characteristics, and excellent softness and sliding characteristics, providing at the same time for the ski a perfect angle hold.
  • the ski slope according to the present invention affords further the great advantage that in case of breakage, the repair may be made by cutting away the broken portion and replacing it with a corresponding new portion which is fastened to the basic structural shape by heat-pressure welding.
  • the skis and the limbs of the skier cannot accidentally penetrate between the various links of the cellular structure of the ski slope in case of falls.
  • An artificial ski slope comprising a support portion, and another portion fast with and supported by the latter and constituting a base for skiing, said support portion including a plurality of elongated structural elements of substantially linear configuration arranged so as to define with one another a plurality of polygonal openings extending through said support portion with each of said elements forming at least part of the side of a polygon, and said other portion including a plurality of elongated elastically yieldable members extending upwardly from said support portion.
  • each of said elements is connected with at least one other of said elements.
  • each of said elements has a width of substantially 0.4 to 2 centimeters.
  • each of said elements having an upper surface; and wherein said surfaces are arcuate.
  • each of said elements having an upper surface; and wherein each of said surfaces comprises two mutually inclined surface portions.
  • each of said members having an end fast with said support portion, and another end spaced from the latter; and wherein at least some of said members are provided with an opening intermediate their respective ends.
  • each of said members having an end spaced from said support portion; and wherein at least some of said members are connected with each other at their respective ends.
  • each of said members having an end spaced from said support portion; and wherein said ends are rounded.
  • An artificial ski slope as defined in claim 1 said members being arranged in substantially parallel rows extending in the direction of elongation of the respective elements; and wherein the respective members of two adjacent rows are arranged laterally adjacent one another.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
US00241228A 1971-04-08 1972-04-05 Man-made ski slopes Expired - Lifetime US3821064A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT290871 1971-04-08

Publications (1)

Publication Number Publication Date
US3821064A true US3821064A (en) 1974-06-28

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ID=11103595

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US00241228A Expired - Lifetime US3821064A (en) 1971-04-08 1972-04-05 Man-made ski slopes

Country Status (7)

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US (1) US3821064A (es)
JP (1) JPS4849234A (es)
AR (1) AR193076A1 (es)
DE (1) DE2216945A1 (es)
ES (1) ES401612A1 (es)
FR (1) FR2132842A1 (es)
ZA (1) ZA722350B (es)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3959542A (en) * 1974-07-12 1976-05-25 Livermore Paul A Artificial ski matting
US3974244A (en) * 1973-11-26 1976-08-10 Donachiue James P Humidifier pad
US4068029A (en) * 1976-03-29 1978-01-10 Lipe Rollway Corporation Molded resilient element for vibratory feeder
US4179539A (en) * 1977-08-18 1979-12-18 Herbert Schweizer Ski slope
US4295930A (en) * 1980-03-17 1981-10-20 Nalco Chemical Company Alkoxylated dioxolanes as paper sizing agents
US4497854A (en) * 1984-03-16 1985-02-05 Milner Ed M Artificial cross-country ski surface with pair of bent over ski tracks
US6061979A (en) * 1997-09-30 2000-05-16 Johannes; Nicholas J. Inline skating sports floor
US20100293848A1 (en) * 2006-08-25 2010-11-25 Chang Sub Son Grass protection mat
EP4198200A1 (en) * 2021-12-17 2023-06-21 Bioski AB Snow simulating skiing surface

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1539000A (en) * 1976-03-29 1979-01-24 Lipe Rollway Corp Moulded resilient element material for vibratory feeder
CH649798A5 (en) * 1981-01-15 1985-06-14 Sportfoerderung Peter Kueng Ag Elastically flexible floor covering

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974244A (en) * 1973-11-26 1976-08-10 Donachiue James P Humidifier pad
US3959542A (en) * 1974-07-12 1976-05-25 Livermore Paul A Artificial ski matting
US4068029A (en) * 1976-03-29 1978-01-10 Lipe Rollway Corporation Molded resilient element for vibratory feeder
US4179539A (en) * 1977-08-18 1979-12-18 Herbert Schweizer Ski slope
US4295930A (en) * 1980-03-17 1981-10-20 Nalco Chemical Company Alkoxylated dioxolanes as paper sizing agents
US4497854A (en) * 1984-03-16 1985-02-05 Milner Ed M Artificial cross-country ski surface with pair of bent over ski tracks
US6061979A (en) * 1997-09-30 2000-05-16 Johannes; Nicholas J. Inline skating sports floor
US20100293848A1 (en) * 2006-08-25 2010-11-25 Chang Sub Son Grass protection mat
US8403592B2 (en) * 2006-08-25 2013-03-26 Chang Sub Son Grass protection mat
EP4198200A1 (en) * 2021-12-17 2023-06-21 Bioski AB Snow simulating skiing surface

Also Published As

Publication number Publication date
ZA722350B (en) 1972-12-27
ES401612A1 (es) 1975-02-16
FR2132842A1 (es) 1972-11-24
AR193076A1 (es) 1973-03-30
DE2216945A1 (de) 1972-11-02
JPS4849234A (es) 1973-07-11

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