US3145998A - Bottom structure for laminated ski - Google Patents

Bottom structure for laminated ski Download PDF

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Publication number
US3145998A
US3145998A US184254A US18425462A US3145998A US 3145998 A US3145998 A US 3145998A US 184254 A US184254 A US 184254A US 18425462 A US18425462 A US 18425462A US 3145998 A US3145998 A US 3145998A
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US
United States
Prior art keywords
ski
sheet
running
edge
running edge
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
US184254A
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English (en)
Inventor
Hartvig E Holmberg
Harry E Holmberg
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.)
Hart Ski Manufacturing Co Inc
Original Assignee
Hart Ski Manufacturing Co Inc
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 to DENDAT1303496D priority Critical patent/DE1303496B/de
Application filed by Hart Ski Manufacturing Co Inc filed Critical Hart Ski Manufacturing Co Inc
Priority to US184254A priority patent/US3145998A/en
Priority to GB38061/62A priority patent/GB1027840A/en
Priority to AT855762A priority patent/AT266660B/de
Priority to FR921900A priority patent/FR1344116A/fr
Priority to CH70563A priority patent/CH398407A/fr
Application granted granted Critical
Publication of US3145998A publication Critical patent/US3145998A/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
    • A63C5/12—Making thereof; Selection of particular materials
    • 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

  • This invention relates to laminated skis and more particularly to the bottom construction of such skis.
  • the lamination of woods and metals to form a ski with the desired exure characteristics is of common knowledge -in the prior art.
  • the use of an exposed metal running edge on either side of the skis under surface is also of common knowledge in the prior ski art.
  • the metal edge is generally comprised of narrow linkages of wear-resistant steel. The linkages are in turn countersunk into the lower running surface of the ski and then held by short screws. The ends of the metal edge linkages are interfitted into mating configurations of successively joining linkages.
  • An edge linklage, and sometimes more, is very often ripped loose from the ski when the ski is being used. This destruction is often caused by rocks or sticks of wood, or the like, which are unintentionally traversed by the skier and which may catch the leading end of the edge linkage.
  • Hardened edge inserts have .the advantage of providing a sharp running edge which makes it possible for a skier to better control his skis under both normal and difcult skiing conditions. Also, if the edge insert projects for a short distance laterally of the ski, there is excess material which can be ground down from time to time for the purpose of removing nicks and sharpening the edge.
  • the present invention contemplates a composite ski wherein resins are utilized for bonding and for the running area and sheet metal is utilized -for strength and resilience and constitutes an improvement over our prior United States patent for Laminated Ski, No. 2,851,277.
  • An object of this invention is to provide a ski bottom structure with a long-lasting metal running edge which is permanently and positively secured to the structure of the ski.
  • Another object of this invention is to provide a ski running edge which is of one continuous piece lof material for substantially the length of the ski and which can be economically contoured and permanently placed prior to molding.
  • FIGURE l is a side elevation of our laminated ski
  • FIGURE 2 is a bottom plan view of our ski, portions thereof being segmentally layered and hidden parts shown in dotted lines;
  • FIGURE 3 is an enlarged segment of the bottom of the ski structure of FIGURE 2, the bottommost layer being cut away to show the internal structure of the ski and some important features of this invention, hidden portions being indicated in dotted line;
  • FIGURE 4 is an enlarged cross section taken on the line 4-4 of FIGURE 3;
  • FIGURE 5 is a further enlarged cross sectional segment of the edge construction of FIGURE 4.
  • FIGURE 6 is a view similar to that of FIGURE 5 showing an alternate form of the edge construction.
  • ski 10 With continued reference to the drawings and more particularly to FIGURES l and 2, we show our ski generally having an upper surface 10, a smooth running surface or bottom 11 and sides 12 and 13. The forward end of the ski is bent upwardly at 14, and the rearward end terminates at rear end 15.
  • the mid-portion 16 of the ski 10 is somewhat cambered and is of greater cross section than are the ends, these features being requirements of a good ski as is well known in the ski art.
  • the ski 10 has a widened portion 17 at the forward end near the curved portion 14.
  • the ski body or core 18 may be comprised of wood or bonded material of wood particles.
  • the core 18 may be of a solid construction throughout or of a configuration as shown in FIGURE 4 wherein there is an open medial portion 19 which extends longitudinally and, as may be seen in FIGURE 2, extends substantially the length of the ski from a rearward termination at 20 to the forward termination at 21.
  • open medial portion 19 which extends longitudinally and, as may be seen in FIGURE 2
  • a heel plate 22 of aluminum or other suitable material is positioned in the plane of the core 18 at the rear end of the ski as may be more clearly seen in FIGURE 3.
  • This plate 22 provides a termination for the medial portion 19 as well as providing the necessary structure to prevent splitting or other damage to the heel end of the ski at end 15.
  • the forward end of the ski is provided with a toe plate 23 which provides a structural reinforcement at the curved portion 14 as well as providing a termination for the end of medial portion 19.
  • the toe and heel portions also prevent snow or water from penetrating the interior of the ski.
  • the toe plate 23 is ungrooved and remains a smooth curved piece of material.
  • the heel plate 22, however, has an upwardly arched portion 24 (see FIGURE 2) which matches the shape of tracking groove 25.
  • the tracking groove 25, as mentioned above, extends from the rearward end 15 of the ski to termination point 26 near the forward end of the ski as may be seen in FIGURE 2.
  • This tracking groove 2S is, of course, required for the straight line tracking of the ski when the ski is being used.
  • a thin, narrow side strip 27 is secured to the outside surface 28 of core members 18.
  • the purpose of these side strips is to enhance the appearance of the ski and, if made of a hard plastic or other similarly durable material, they will add structure to the ski as well as higher resistance to scratching and marring than would the core members 18 themselves provide.
  • FIGURE 4 we may utilize a lamination system similar to that disclosed in our prior Patent No. 2,851,277 wherein we provide our laminated ski with a first upper sheet 29, preferably of an aluminum type material, which is secured to the upper surface 30 of core members 1S, side strips 27 and end plats 22 and 23.
  • a second upper sheet 31 which is preferably of a thin steel composition and which is coextensive with the area of aluminum sheet 29, i.e., over the entire upper area of the ski.
  • a final third upper sheet 32 preferably of a hard plastic material, is finally bonded to the upper surface 33 of the steel sheet 31 and is similarly coextensive with the area of steel sheet 31.
  • first lower sheet 35 which is substantially the same as sheet 29 in thickness, composition, and linear dimensions; however, as may be seen in FIGURE 4, a longitudinal raised portion 36 is formed in the medial portion of the sheet which provides the basic shape of groove 25.
  • second lower sheet 37 which is of spring steel composir tion similar to sheet 31, but has an entirely different configuration.
  • this steel sheet or perforate sheet 37 has width and length identical to aluminum sheet 35 excepting at the forward upturned end of the ski 14. As shown by the dotted lines in FIGURE 2, where the ski begins to narrow, at point 38, the perforate sheet terminates.
  • the perforate plate 37 has a punched or perforated configuration shown generally as openings 39 which may be formed by simply punching the portions of the plate 37 out by machine.
  • the remaining portions constitute principally an edge portion 4t) and inwardly extending fingers 41.
  • the fingers extend inwardly and may terminate at respective ends 42 adjacent the tracking groove 25.
  • the perforate plate 40 may be varied in width to accommodate the width of the ski along the ski length so that at area 17 (see FIGURE 2) where the ski widens, the perforate plate 40 (actually the lateral distance between finger ends 42) may similarly be widened thereby positioning the running edge 44 coincident with, or at a fixed distance outside the ski sides, regardless of the overall width of the ski.
  • Running edge 44 is approximately a quarter of an inch wide and extends the same length on the ski as perforate plate 37 does.
  • running edge 44 if also made of a hardened steel composition similar to that of perforate sheet 37, will provide the desired wearresistance to snow and to withstand foreign materials such as stones and sticks of wood.
  • the running edge 44 may be easily and positively secured t perforate plate 40 by spot welding 44a.
  • the strength of the weldment 44a exceeds that of adhesive bonding and can be accomplished in the thicknesses required without warping or destroying the hardness of the metal.
  • we can produce the same edge structure 44 by welding a continuous bead of weld material along the marginal edge of perforate plate 40, after which the bead is ground to the desired dimensions.
  • a final running sheet 45 on the bottom of the ski which may be of a hard thermosetting resin or may be of a less hard, but more slippery, composition such as polyethylene.
  • the thickness of sheet 45 is substantially that of the running edges 44 so that a smooth continuous running surface, lying in a single plane, is formed by utilizing the running edges as screeds or stop guides so that the lower surface 46 of the ski is defined by running edges 44 and running sheet 45.
  • portions of perforate plate 37 have been eliminated, such as open portion 39 between fingers 41, the groove portion 47 and the portion 48 which is between the forward end termination 49 of plate 37 and the ski tip 50
  • the thickness of sheet 45 is additionally the thickness of the perforate plate 37.
  • the open space 39 defined by fingers 41 of perforate plate 37 allows the plastic sheet material to fiow into the open spaces during the construction process and thereby to form a key system 51 for interlocking and bonding the running sheet 45, the fingers 41 and sheet 35 together.
  • FIGURE 6 An alternate form of edge construction is shown in FIGURE 6.
  • the upper portion 52 of the ski may be similar to, or even identical with, the upper portion of the ski as described above.
  • the bottom structure differs somewhat below the first metal plate 53 which lies immediately below the core 54.
  • the running edge 55 has a right angled shape with a horizontal flange 56 underlying the edge margin 57 of plate 53 and a vertical ange 58 extending downward to provide a sharp running edge 59 and a horizontal guide surface 60 at the bottom thereof.
  • Flange 56 has an upwardly facing surface 61 adapted to be bonded to the marginal surface 57 of plate 53 and has a downwardly facing surface 62 which overlies the spring steel plate 63 at its upper marginal surface 64.
  • the steel plate 63 corresponds to plate 37 of the first disclosed form and may have perforate openings of various design formed therethrough as previously disclosed. In any event a substantial portion of the plate 63, in the form of solid plate, fingers, bridging strips, or the like underlies a plate 65 which, in turn, is bonded to the plate 53 and provides a spacing function so that all of the plates and the running edge are adapted to be bonded together.
  • the shallow recess which is defined by the downward flange extensions 58 of running edges 55 and the plate 63 becomes a cavity within which a suitable material such as a wax modified polyethylene 67 can be molded and bonded.
  • the surface 60 of each edge fiange extension 58 defines a guide or stop for molding the running surface 67 within the cavity.
  • a bottom structure therefor comprising a hard continuous sheet of weldable metal bonded as a laminate thereto, said sheet extending substantially for the length and substantially for the width of said ski, right angled running edge means also of weldable metal at each side of said sheet, each of said running edge means having an inwardly directed horizontal flange and a downwardly directed vertical flange, said horizontal fianges being welded directly to marginal portions of said r sheet to form a channel-shaped unit composed of said sheet and running edge means, and a running sheet having at least a substantial portion of its upper face bonded to the lower face of said metal sheet between said running edge means whereby to form a smooth continuous surface with said running edge means.
  • a ski having a bottom as set forth in claim 1 in which said metal sheet and said running edge means are of hardened steel.
  • a ski having a bottom as set forth in claim 2 in which said horizontal flanges are spot welded at spaced locations therealong to said metal sheet.
  • a ski having a bottom a's set forth in claim 4 in which said horizontal flanges are spot welded at spaced locations therealong to said metal sheet.
  • a ski having a bottom as set forth in claim 4 in which the combined thicknesses of said steel and running sheets is substantially equal to the downwardly extending length of each vertical flange.
  • a laminated ski core material, a first metal sheet bonded to the underside of said core material, a plurality of right angled steel running edge means, each of said edge means having a horizontal flange and a vertical flange, the upper faces of said horizontal flanges being bonded to the lower marginal portions of said rst sheet, a second metal sheet extending between said horizontal ilanges having its upper face bonded to the central lower portion of said rst sheet, a steel sheet having its upper marginal portions spot welded to the undersides of said horizontal flanges at spaced locations therealong and its upper central portion bonded to the underside of said second sheet, and a running sheet bonded to the lower face of said steel sheet between said vertical flanges to form a smooth continuous surface with said running edge means.
  • each steel sheet is provided with openings extending through the central portion thereof.

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  • Laminated Bodies (AREA)
US184254A 1962-04-02 1962-04-02 Bottom structure for laminated ski Expired - Lifetime US3145998A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DENDAT1303496D DE1303496B (sv) 1962-04-02
US184254A US3145998A (en) 1962-04-02 1962-04-02 Bottom structure for laminated ski
GB38061/62A GB1027840A (en) 1962-04-02 1962-10-08 Bottom structure for laminated ski
AT855762A AT266660B (de) 1962-04-02 1962-10-30 Mehrschichtenski
FR921900A FR1344116A (fr) 1962-04-02 1963-01-18 Partie inférieure d'un ski stratifié
CH70563A CH398407A (fr) 1962-04-02 1963-01-21 Ski stratifié

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US184254A US3145998A (en) 1962-04-02 1962-04-02 Bottom structure for laminated ski

Publications (1)

Publication Number Publication Date
US3145998A true US3145998A (en) 1964-08-25

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Family Applications (1)

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US184254A Expired - Lifetime US3145998A (en) 1962-04-02 1962-04-02 Bottom structure for laminated ski

Country Status (5)

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US (1) US3145998A (sv)
AT (1) AT266660B (sv)
CH (1) CH398407A (sv)
DE (1) DE1303496B (sv)
GB (1) GB1027840A (sv)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3306655A (en) * 1964-06-17 1967-02-28 Gen Motors Corp Vehicle tailgate actuator
US3329437A (en) * 1965-03-10 1967-07-04 Hart Ski Mfg Co Inc Bottom structure for skis
US3360277A (en) * 1964-04-28 1967-12-26 Salvo Mario Structure for snow skis and the like, of pressed metal plate, preferably of steel
US3374001A (en) * 1965-08-12 1968-03-19 Baudou Antoine Joseph Georges Metallic ski
US3501161A (en) * 1968-03-18 1970-03-17 Beatrice Foods Co Heel protector for snow skis
US3612556A (en) * 1969-09-25 1971-10-12 Larson Ind Inc Snow ski having angular torsion member
US20070018431A1 (en) * 2000-10-06 2007-01-25 Atomic Austria Gmbh Ski and method of manufacturing the ski

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1272746C (en) * 1985-04-08 1990-08-14 SNOW SKIING AND ITS MANUFACTURE
USD680879S1 (en) 2010-11-03 2013-04-30 S.C. Johnson & Son, Inc. Dispenser
USD653106S1 (en) 2010-11-18 2012-01-31 S.C. Johnson & Son, Inc. Container shroud

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1973343A (en) * 1931-09-28 1934-09-11 Hansen Karl Johan Ski
CH204885A (de) * 1937-06-28 1939-05-31 Sanner Adolf Ski mit metallenen Schutzkanten.
US2446591A (en) * 1944-11-14 1948-08-10 Christian K Hoerle Metal ski
GB631879A (en) * 1946-09-26 1949-11-11 Gomme Ltd E Improvements in or relating to skis
FR979589A (fr) * 1948-12-06 1951-04-27 Perfectionnements aux skis
US2581532A (en) * 1946-08-23 1952-01-08 Arne G Hem Ski
US2648543A (en) * 1949-01-10 1953-08-11 Grabowski Edward Witold Laminated ski
US2694580A (en) * 1951-02-27 1954-11-16 Head Ski Co Inc Composite wood and metal ski having plastic running surface
US2851277A (en) * 1955-08-04 1958-09-09 Hartvig E Holmberg Laminated ski
AT218934B (de) * 1959-10-17 1961-12-27 Anton Kaestle Mehrschichtenschi

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1973343A (en) * 1931-09-28 1934-09-11 Hansen Karl Johan Ski
CH204885A (de) * 1937-06-28 1939-05-31 Sanner Adolf Ski mit metallenen Schutzkanten.
US2446591A (en) * 1944-11-14 1948-08-10 Christian K Hoerle Metal ski
US2581532A (en) * 1946-08-23 1952-01-08 Arne G Hem Ski
GB631879A (en) * 1946-09-26 1949-11-11 Gomme Ltd E Improvements in or relating to skis
FR979589A (fr) * 1948-12-06 1951-04-27 Perfectionnements aux skis
US2648543A (en) * 1949-01-10 1953-08-11 Grabowski Edward Witold Laminated ski
US2694580A (en) * 1951-02-27 1954-11-16 Head Ski Co Inc Composite wood and metal ski having plastic running surface
US2851277A (en) * 1955-08-04 1958-09-09 Hartvig E Holmberg Laminated ski
AT218934B (de) * 1959-10-17 1961-12-27 Anton Kaestle Mehrschichtenschi

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360277A (en) * 1964-04-28 1967-12-26 Salvo Mario Structure for snow skis and the like, of pressed metal plate, preferably of steel
US3306655A (en) * 1964-06-17 1967-02-28 Gen Motors Corp Vehicle tailgate actuator
US3329437A (en) * 1965-03-10 1967-07-04 Hart Ski Mfg Co Inc Bottom structure for skis
US3374001A (en) * 1965-08-12 1968-03-19 Baudou Antoine Joseph Georges Metallic ski
US3501161A (en) * 1968-03-18 1970-03-17 Beatrice Foods Co Heel protector for snow skis
US3612556A (en) * 1969-09-25 1971-10-12 Larson Ind Inc Snow ski having angular torsion member
US20070018431A1 (en) * 2000-10-06 2007-01-25 Atomic Austria Gmbh Ski and method of manufacturing the ski
US7275756B2 (en) 2000-10-06 2007-10-02 Atomic Austria Gmbh Ski and method of manufacturing the ski

Also Published As

Publication number Publication date
AT266660B (de) 1968-11-25
DE1303496B (sv) 1971-12-23
GB1027840A (en) 1966-04-27
CH398407A (fr) 1966-03-15

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