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EP0206676A2 - Verfahren zur Behandlung der Metallkanten von Schiern - Google Patents

Verfahren zur Behandlung der Metallkanten von Schiern Download PDF

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Publication number
EP0206676A2
EP0206676A2 EP86304541A EP86304541A EP0206676A2 EP 0206676 A2 EP0206676 A2 EP 0206676A2 EP 86304541 A EP86304541 A EP 86304541A EP 86304541 A EP86304541 A EP 86304541A EP 0206676 A2 EP0206676 A2 EP 0206676A2
Authority
EP
European Patent Office
Prior art keywords
ski
electrode
metal
edge
carbide
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.)
Withdrawn
Application number
EP86304541A
Other languages
English (en)
French (fr)
Other versions
EP0206676A3 (en
Inventor
William Chastain
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.)
K2 Corp
Original Assignee
K2 Corp
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
Application filed by K2 Corp filed Critical K2 Corp
Publication of EP0206676A2 publication Critical patent/EP0206676A2/de
Publication of EP0206676A3 publication Critical patent/EP0206676A3/en
Withdrawn legal-status Critical Current

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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
    • A63C5/04—Structure of the surface thereof
    • A63C5/048—Structure of the surface thereof of the edges

Definitions

  • the present invention relates to snow skis of the type which include metal edges positioned at the periphery of the bottom or running surface of a ski and, more particularly, to a process for treating the metal ski edge after it has been mounted in place on a ski.
  • the process includes grounding the metal ski edge and then moving the ski past an electrically charged electrode spaced from the ski edge such that an electrical arc passes from the electrode to the metal ski edge carrying with it material from the electrode and melting and depositing it on the ski edge.
  • the electrode is formed, in part, of carbide and portions of the carbide electrode are carried by the; electrical arc to the metal ski edge to form a hard coating thereon. Apparatus for carrying out this process is also disclosed.
  • Snow skis may be considered to be comprised of a body portion and a base or running surface portion.
  • the body portion is formed of a composite of fiberglass impregnated with epoxy resin, a core material of foam, wood or honeycomb metal, and other materials which may be included in the ski body to control ski vibration or otherwise affect ski performance.
  • the present invention also has application to skis whose body portion is formed in any other way.
  • the base or running surface portion of the ski is typically comprised of a layer of petroleum based material such as polyethylene, high molecular weight sintered material, or P-tex, all of which materials are characterized by the ability to run freely on a snow surface rather than sticking to it.
  • the lateral outer portions of the base surface are provided with metal edges which extend from tip to tail on both sides of the ski and, when sharp, provide an edge which allows a user to carve turns and check his speed, particularly on hard packed snow or icy surfaces.
  • Metal ski edges typically include a rectangular portion having a surface exposed on the bottom, or running surface of the ski, a surface exposed along the lower portion of the lateral side of the ski, and an arm extending from the rectangular portion into the body of the ski above the slippery base member to anchor the metal ski edge in place.
  • Metal ski edges may be continuous or "cracked" to increase their flexibility, or in some instances, particularly in older skis, may be formed of a plurality of longitudinally adjacent separate metal members.
  • ski edges have been tuned or sharpened by grinding, filing or sanding in such a manner that the outer, lower corner of the ski edge defines an angle of approximately 90°.
  • the corners of metal ski edges become rounded or dull thus reducing the skier's ability to control the movement of his skis over the surface of the snow, and particularly over icy or hard packed snow.
  • Forming ski edges entirely out of extremely hard, brittle steel has not proven to be a solution to the wear problem, both due to difficulty of manufacture and because the continuous flexing of a ski edge during use causes brittle material to crack.
  • French patent disclosure No. 1,563,297 discloses placement of a thin layer of tungsten carbide or aluminum oxide on either the side or bottom surface of a metal ski edge.
  • the disclosed method of applying the material is flame spraying, a process wherein a flame, such as from a blow torch, is directed against the surface to be coated, and particles of the material to be applied are then directed into the flame and carried against and bonded to the metal ski edge surface by the movement of the flame.
  • U.S. Patent No. 3,918,728 discloses the use of what is termed "cold process" flame spraying to apply carbide particles of a particular size range, i.e., between -100 mesh and 15 microns, to the lateral surface of a metal ski edge in a layer of from 1-10 mils thickness to roughen the surface and make it abrasive.
  • the present invention provides a unique continuous coating method and apparatus for treating a metal ski edge after it is mounted in a ski whereby a very thin, melted coating of hard material is deposited electrically on the lateral sides of the metal ski edge.
  • the method and apparatus deposits a relatively smooth melted coating of material such as tungsten carbide without undue heating, discoloring or otherwise damaging any portion of the ski adjacent the metal ski edge.
  • the method and apparatus deposits a hard melted coating without the roughness characterized by the prior flame spray coating techniques wherein distinct particles were deposited on the metal ski edge.
  • a ski having a metal ski edge is positioned on a conveyer and carried along a path past one or more electrodes formed in part of a hard material such as tungsten carbide.
  • the metal edge of the ski is grounded or otherwise held at an electrical potential lower than that of the electrodes such that an electrical arc passes from the electrodes to the metal ski edge as the ski edge moves thereby.
  • the electrical arc carries carbide material from the electrode and deposits it on only the lateral side of the portion of the metal ski edge which is to be coated.
  • the ski placed on the conveyer trips a timing switch which causes a plurality of hold-down rollers to press upon the top of the ski to remove the vertical camber from the ski during treatment.
  • the electrodes are comprised of a plurality of rapidly spinning wheels pivotally mounted upon carrying heads which are positioned to be moved inwardly and outwardly with respect to the side edges of the ski and to thus move the electrodes to a position adjacent to, but spaced from, the metal ski edge.
  • Guide rollers positioned on the fore-and-aft edges of the carrying heads contact the side edges of the ski both to maintain the spacing of the electrodes from the metal ski edges to accommodate the side curvature of the ski, and to ground the metal ski edge.
  • the rotating metal electrodes are spring-biased toward the metal ski edge to ensure that an electrical arc will occur when the distance of the wheel from the ski edge and the electrical potential difference between the electrode and the metal ski edge result in arcing conditions.
  • the spinning electrode wheel After moving toward the ski and arcing, the spinning electrode wheel rebounds either from the force of the electrical discharge or from contact with the ski edge, and is again spring-biased toward the metal ski edge to repeatedly produce a series of electrical arcs and consequent deposits of hard material as the ski passes the electrode. Arcing may also occur when the electrode wheel is moving away from the ski edge if arcing conditions of charge and spacing occur.
  • the placement of a plurality of electrodes on each side of the ski allows the thickness of the layer of hardening material carried from the electrodes to the metal ski edge to be controlled.
  • the coating deposited by the present invention is less than 1 mil in thickness.
  • the electrical deposition process carried out in accord with the method and apparatus disclosed herein produces a very thin surface coating of hard material near the lower edge of the lateral side of the metal ski edge.
  • the deposited material has a melted appearance rather than being formed of discrete particles.
  • This electrical deposition process does not excessively heat, disfigure or otherwise adversely affect plastic, resin or fiberglass materials adjacent to the metal ski edge, nor require any additional cosmetic treatment to "clean up" any side effects or residue of this deposition process.
  • the corner 18 of the metal ski edge is shaped in the form of a right angle thus providing a sharp corner which is readily suited for carving hard packed snow and ice which is encountered while skiing. It is well known that metal ski edges having a sharp corner 18 provide good control to skiers and are highly desirable. Unfortunately, in use, such metal edges tend to become rounded and worn from repeated contact with snow, ice, rocks and other materials which may be encountered while skiing on a mountain. The rounding of the corner 18, which is commonly referred to as the "dulling" of the ski edge, significantly reduces a user's ability to control the motion of the skis, and consequently, the skier's own motion and speed over the snow.
  • ski edges When ski edges become dulled they are resharpened by grinding, filing or sanding the metal edges to recreate the approximate 90° angle at corner 18. It will be understood that the sharpness of the ski edge can be increased by forming the angle at corner 18 at somewhat less than 90°.
  • Current techniques for sharpening skis are both labor intensive and difficult for most skiers to perform correctly. Thus, ski edge sharpening is usually performed by ski shops at some cost to the skier.
  • the method of the present invention eliminates or substantially reduces the need for repeated sharpening of metal ski edges by treating the metal ski edge in a manner such that a thin layer of a hard material is deposited on at least a portion of the side surface of the metal ski edge to prevent or reduce the wear of this surface of the ski edge.
  • this deposited layer is exaggeratedly shown at 20 as having substantial thickness and extending completely over the lateral side of the metal ski edge, but it will be understood that in most instances the hard coating is very thin, i.e., less than 1 mil in thickness and typically in the range of .0001 to .0005 inches and will be deposited only on the lower portion of the side surface adjacent corner 18.
  • the positioning of the hard surface 20 on the lateral side of the metal ski edge 16 prevents the rounding of corner 18 during use of the ski and it will be understood that the fact that, in accord with the disclosed method, the bottom surface 22 of the metal ski edge is not coated with the hard material, will allow it to continue to wear with use thus producing a desirable, less than 90°, angle at corner 18. This additional wear and the consequent sharpening of the ski edge is illustrated by dashed line 24 in FIGURE 1. In this way, a ski edge treated in accord with the disclosed method creates a self-sharpening ski edge.
  • the method of the present invention broadly comprises creating relative longitudinal movement between the metal ski edge maintained at a first electrical potential level and one or more electrodes positioned adjacent the ski edge and maintained at a second higher electrical potential level.
  • the electrodes are themselves formed, at least in part, of a hard material such as tungsten carbide.
  • the charged electrodes move toward and away from the metal ski edge to repeatedly produce an electrical arc which passes from the electrode to the lateral side of the metal ski edge and carries with it a portion - of the tungsten carbide electrode and deposits it upon the lateral surface of the metal ski edge.
  • the mechanism of deposition is not fully understood.
  • micrographic examination of treated edges indicates the formation of untempered martensite on the surface of the ski edge, thus indicating that the steel edge surface has been heated to in excess of 1400°F and "self-quenched."
  • the body of the ski edge was found to have a hardness of 47HRC, while the treated surface had a hardness of 63HRC in the heat-affected zone.
  • a very thin layer of a material such as carbide may be selectively positioned on surface 20 adjacent the corner 18 of the ski edge in a rapid manner and without overheating, discoloring or otherwise damaging in any way, either the body or base of the ski on which the metal ski edge is mounted.
  • a layer of carbide having a thickness of .0003 inches was deposited in less than 10 seconds on the lateral sides of a metal ski edge adjacent the wear-prone corner 18 without any damage or disfiguration of the completed fiberglass ski.
  • the method of the present invention can thus be carried out as the last, or near last, step in a manufacturing process to produce a ski having an improved metal edge which may never need to be sharpened during the life of the ski. If, however, the ski edge does become dulled due to extreme use and consequent wearing off of the deposited carbide, the ski edge may be sharpened and readily retreated to again produce a ski edge which will remain sharp for a very extended period.
  • FIGURES 2 and 3 an apparatus 28 is disclosed which has been found suitable for carrying out the method of the present invention.
  • a ski 10 is shown being conveyed tail first on a pair of conveyor belts 30 which ride on guide pulleys 32 and are driven by drive pulley 34.
  • drive pulley 34 is mounted on axle 35 and is driven by conventional chain and sprocket or belt and pulley means 36 which are powered by a conventional electric gearhead motor 38.
  • ski 10 is placed tail first upon conveyors 30 and is carried over a limit switch 40 positioned between pulleys 32.
  • the tripping of limit switch 40 by the ski actuates a timing sequence (see discussion of FIGURE 8 below) governing the movement of pneumatically actuated downhold rollers 42, 44 and 46.
  • the function of these rollers is to remove the vertical camber from ski 10 while material is being deposited on the metal edges of the ski. As discussed heretofore, it is important that the deposited material be placed adjacent the lower portion of the lateral side of the metal ski edge, i.e., near corner 18, if wear reduction is to be effective. Since the vertical camber of skis varies, removal of the camber by means of downhold rollers 42, 44 and 46 fixes the location of the ski edge during treatment and allows the hard material to be deposited precisely in a desired location.
  • ski 10 and conveyor belts 30 ride upon a fixed support member 50 in the center portion of the machine between guide pulley 32 and drive pulley 34.
  • Laterally adjacent fixed member 50 are a pair of electrode carrying heads 52 and 54 which are slidably mounted upon transversely extending shafts 56 and 58.
  • Pairs of pneumatic cylinders and pistons 60, 62 are mounted to move electrode carrying heads 52 and 54 toward and away from the edges of ski 10.
  • limit switch 40 not only controls.
  • downhold rollers 42, 44 and 46 controls the inward and outward movement of electrode carrying heads 52 and 54 such that the electrodes are moved adjacent the metal edges of ski 10 when that portion of the metal edge of the ski which is to be treated passes adjacent electrodes 48.
  • Pairs of guide rollers 64, 66, 68, 70 are mounted on the longitudinal ends of electrode carrying heads 52 and 54, adjacent the laterally inward edge of the carrying heads.
  • Guide rollers 64 and 68 contact the lateral edges of ski 10 when pairs of cylinders and pistons 60 and 62 move the electrode carrying heads inward toward ski 10 shortly after the tail of ski 10 passes thereby.
  • Rollers 64 and 68 act as spacing and locating guides to maintain electrodes 48 generally adjacent to the lateral sides of the metal edges of ski 10. As the tail of ski 10 passes between guide rollers 66 and 70, these rollers function similarly to rollers 64 and 68.
  • brushes 65 are commonly connected by wires 67 to the negative terminals of the power supplies which energize the electrodes as will be discussed in detail hereafter. Consequently, these rollers act as a ground for the metal ski edge with which a pair of the rollers is always in contact.
  • each of the electrodes 48 is connected to the positive terminal of one of the power supplies so that it is electrically charged to a higher electric potential than the rollers. Consequently an electrical discharge from the electrodes to the metal ski edge will occur under proper spacing and charge conditions.
  • electrode assemblies 48 include ball bearings 72 mounted on rotatably driven shafts 74.
  • Assembly 48 includes a first electrically nonconductive portion 76 interconnected by fasteners 77 to a second lower portion 78 which is mounted on ball bearing 72 to ride freely on rotating drive shaft 74.
  • Nonconductive elements 76 support shafts 79 on which each of the treating electrodes 80 are mounted.
  • Brushes 81 (FIGURE 6) are shown in contact with each of the treating electrodes 80 to impart an electrical charge thereto.
  • the brushes are electrically interconnected to a charging system described hereafter, which is capable of rapidly recharging the treating electrodes after an electrical arc discharge to the metal ski edge occurs.
  • the mounting of the treating electrode 80 on electrically insulated portion 76 prevents grounding of the charged electrode through support and drive shaft 74 which would prevent the electrical arc discharge to the ski edge from occurring.
  • electrode 80 is formed of tungsten carbide in the shape of a wheel. It has been found that commercially available tungsten carbide cutting wheels identified as RNMG-106E and sold by TRW, Inc. are satisfactory for use in the present invention, although other tungsten carbide elements of differing formulation or hardness, or even other suitable hard, conductive materials may also be used in this invention.
  • electrode 80 is mounted for rotation on shaft 79 which extends laterally outwardly from nonconductive support member 76. Shaft 79 mounts a sheave 84 on its opposite end. Sheave 84 is driven by means of a nonelectrically conductive O-ring drive belt 86 to sheave 88 which is fixedly mounted upon rotating drive shaft 74. In this way, the rotation of drive shaft 74 is transmitted to rotating electrode wheel 80.
  • Compression spring members 90 are mounted between carrying heads 52 and 54 and electrode assemblies 48 to bias the electrodes toward the metal ski edge with a necessarily very light pressure.
  • the rotational drive arrangement for electrodes 80 is shown to include a sheave 92 mounted on the distal end of shaft 74.
  • Sheave 92 is adapted to cooperate with belt 94 which runs around a second larger sheave 96 mounted on shaft 98.
  • Also mounted on shaft 98 is a smaller sheave 100 on which belt 102 runs.
  • Belt 102 runs to a drive pulley associated with a conventional electric drive motor (not shown).
  • a separate drive motor may be associated with each electrode drive chain for rotational powering of the electrodes 80 on carrying heads 52 and 54 or that a single larger motor may be used.
  • a pair of 1/4 hp motors driving head pulleys at approximately 3450 rpm has been found satisfactory.
  • electrode 80 is driven at approximately 14,000 rpm. The rapid rotation of treating electrode 80 distributes the point of electrical arc origination about the surface of the electrode and, thus, portions of the entire surface of the electrode are uniformly torn away and deposited on the metal ski edge.
  • the electrical subsystem for charging the electrodes 80 includes a pair of regulated power supplies 110 and 112, which are each connected to receive 208 volts AC from a conventional three-phase source.
  • power supply 110 is connected to terminals B and C of the source through switches S2 and S3, respectively, and fuses F2 and F3, respectively.
  • Power supply 112 is connected to terminals A and B of the source through switches S1 and S2, respectively, and fuses F1 and F2, respectively.
  • conductors 114 and 116 connect terminal A and a neutral terminal N of the source to the motor control and timing circuitry shown in FIGURE 8.
  • the power supplies 110 and 112 are of conventional design, producing a variable DC output that can be adjustably limited, both as to current and voltage.
  • a suitable power supply is Model LT802, manufactured by Lamda Electronics, which has a rated output of zero to 18 volts and 70 amps.
  • the power supplies are arranged so that each of them charges one of the two sets of electrodes 80 carried by the electrode-carrying heads 52 and 54.
  • the electrodes 80 are connected to the positive terminals of the power supplies 110 and 112 and the two pairs of guide rollers 64, 66 and 68, 70 are connected to the negative terminals of the two power supplies through brushes 65 (not shown in FIGURE 7).
  • the negative terminals of the two power supplies are interconnected to form a negative ground for each of the four guide rollers.
  • the power supplies continuously impress a potential upon each of the electrodes 80.
  • a current path from an electrode back to its associated power supply is provided whenever the potential is sufficient to break down the gap or when the electrode contacts the metal ski edge. Since the power supplies are current and voltage limiting, they are not adversely affected by the surges created by the action of the electrodes.
  • the capacity of the two power supplies and the operational arcing of the electrodes is such that the power supplies are substantially constantly loaded. Consequently, whenever discharged, the electrodes are rapidly recharged.
  • each of the rotating electrodes 80 is approximately 18 volts at 30-60 amps current, and that these electrodes continuously and rapidly move toward and away from the metal ski edge.
  • Carrying members 48 are biased toward the ski by spring 90 and when the rotating electrode wheel 80 either discharges by sending an arc to the ski edge or contacts the metal ski edge, or both, the carrying member 78 is driven away from the ski edge in reaction and then again biased by spring 90 back toward the ski edge. This repeated to-and-fro movement repeatedly places the spinning electrode at a distance from the ski edge where an electrical discharge in the form of an electrical arc occurs.
  • guide rollers 64, 66, 68 and 70 maintain the metal ski edge in a grounded or low electrical potential condition such that the travel of the electrical arc from electrode 80 is always in the direction toward the metal ski edge. It has been found that during arcing, a portion of the electrode 80 is removed from the electrode and transmitted toward_.and deposited upon the metal ski edge. In this manner, a coating of the material of which the electrode is made is deposited upon the metal ski edge.
  • electrodes 80 are formed of tungsten carbide and hard carbide material and is thus deposited in a very thin layer upon the lateral surface of the metal ski edge. Electrode wheels 80 are rotated on shaft 79 in a downward direction with respect to the metal ski edge and it has been found that rotation in this direction prevents deposition of electrode material upon the bottom or running surface of the ski edge.
  • a thin layer of hard carbide material is deposited on the lateral side of the metal ski edges from shortly behind the shovel of the ski to near the tail of the ski. It will be understood, however, that control of the charging of the electrode, for example, would allow only smaller or spaced portions of the ski edges to be coated.
  • a conventional motor controller 120 provides AC power to, and regulates the speed of, the ski conveyor drive motor 38.
  • Each of the two sets of electrodes 80 is rotationally driven by a separate DC drive motor.
  • these motors are designated “left head drive” 122 that drives the electrodes carried by carrying head 52, and “right head drive” 124 that rotates the electrodes carried by carrying head 54.
  • Left head drive motor 122 is powered and speed regulated by a conventional DC motor controller 126 and right head drive motor is powered and speed regulated by a conventional DC motor controller 128.
  • the Ratio-Pax, RP-1 motor controller manufactured by Boston Gear International, Inc., is suitable for use for each of the motor controllers 126 and 128.
  • the timing circuit 118 establishes the timing sequences that activate the pneumatic cylinders that control the upward and downward movement of downhold rollers 42, 44, and 46 and the inward and outward movement of the electrode-carrying heads 52 and 54.
  • the "engage” and “disengage” timing sequences are activated by the movement of the ski 10 over limit switch 40.
  • the movement of the tail of the ski over limit switch 40 energizes solenoid SOL1 and time delay relays TDR3 and TDR4.
  • Solenoid SOL1 is an integral part of pneumatic cylinder 42a which, when energized, actuates this cylinder to drive the infeed downhold roller 42 into engagement with the ski.
  • Time delay relays TDR3 and TDR4 are of the opening, or off, type and control the closing and opening of contacts TDC3 and TDC4.
  • time delay relays TDR3 and TDR4 When time delay relays TDR3 and TDR4 are energized upon tripping of the switch 40, contacts TDC3 and TDC4 are immediately closed and remain closed for the time duration established by their associated time delay relays. The effect of this operation is to energize two other time delay relays, TDR1 and TDR2, for the time interval determined by relays TDR3 and TDR4, respectively.
  • Time delay relays TDR1 and TDR2 are of the time delay closing, or on, type and function to control the opening and closing of electrical contacts TDCla and TDCIb (both controlled by TDR1) and TDC2 (controlled by TDR2).
  • the contacts TDCIa and TDClb close after a time delay period established by relay TDR1. This delay period begins upon energization of relay TDR1 by the closure of contact TDC3.
  • Time delay relay TDR2 functions in a similar manner to close contact TDC2 after a time delay period that begins upon closure of contact TDC4.
  • closure of contact TDC1b connects solenoid SOL5 with the power source.
  • This solenoid is an integral part of pneumatic cylinder 44a, which controls the movement of the outer downhold roller 44.
  • cylinder 44a drives the center downhold roller 44 into engagement with the ski.
  • the closure of contact TDCla energizes solenoids SOL3 and SOL4 that control actuation of the cylinders and pistons 60 and 62, respectively, which control movement of the left electrode-carrying head 52 and the right electrode-carrying head 54, respectively.
  • Solenoid SOL2 is an integral part of the pneumatic cylinder 46a that controls operation of the outfeed downhold roller 46. Since the period of delay set by relay TDR2 is longer than that set by relay TDR1, solenoid SOL2 is energized after the energization of solenoids SOL3, SOL4, and SOL5. Consequently, the outfeed downhold roller 46a is the last of the rollers to move into engagement with the ski. The timing of this engagement, as set by relay TDR2, is such that the downhold roller 46 contacts the tail of the ski as it passes therebeneath.
  • the opening of switch 40 also deenergizes time delay relays TDR3 and TDR4. Since these two relays are of the time delay opening type, the contacts that they control (TDC3 and TDC4, respectively) remain closed until expiration of the preset periods of delay. The delay period for relay TDR3 expires first, opening contact TDC3 and thereby deenergizing relay TDR1. When this occurs, contacts TDCIa and TDCIb open without delay since TDR1 is of the time-opening type. As a result, solenoids SOL3, SOL4, and SOL5 are deenergized and the pneumatic cylinders controlled thereby actuated to cause disengagement of the left and right electrode-carrying heads 52 and 54 and the center downhold roller 44.
  • timing circuit 118 can be substituted for the timing circuit 118 discussed above. It will also be appreciated that a number of arrangements other than the limit switch 40 can be employed to initiate the timing sequences that control movement of the rollers and electrode-carrying heads.
  • the invention generally relates to the use of electric arc deposition in the treatment of ski edges by creating an electric arc from an electrode formed at least in part of a hard material to the ski edge so as to carry and deposit hard material from said electrode onto said edge.
  • hard material any material suitable for use on skis which is harder than the material forming the edges of the ski and which is capable of being deposited by electric arc deposition.

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EP86304541A 1985-06-12 1986-06-12 Process for treating the metal edge of a ski Withdrawn EP0206676A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US74404685A 1985-06-12 1985-06-12
US744046 1985-06-12

Publications (2)

Publication Number Publication Date
EP0206676A2 true EP0206676A2 (de) 1986-12-30
EP0206676A3 EP0206676A3 (en) 1988-03-23

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Application Number Title Priority Date Filing Date
EP86304541A Withdrawn EP0206676A3 (en) 1985-06-12 1986-06-12 Process for treating the metal edge of a ski

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EP (1) EP0206676A3 (de)
JP (1) JPS61284272A (de)
CA (1) CA1259529A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT397925B (de) * 1990-11-06 1994-08-25 Wintersteiger Gmbh & Co Bearbeitungsvorrichtung für skier

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1563297A (de) * 1968-03-22 1969-04-11
DE1300797B (de) * 1966-06-04 1969-08-07 Elektrogeraetewerk Gornsdorf V Rotierende Elektrode zum elektrischen Beschichten von Metallen
US3918728A (en) * 1974-06-21 1975-11-11 Walter F Stugger Snow ski and edge
GB2068811A (en) * 1980-01-15 1981-08-19 Inoue Japax Res Method of and apparatus for discharge-surfacing electrically conductive workpieces

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1300797B (de) * 1966-06-04 1969-08-07 Elektrogeraetewerk Gornsdorf V Rotierende Elektrode zum elektrischen Beschichten von Metallen
FR1563297A (de) * 1968-03-22 1969-04-11
US3918728A (en) * 1974-06-21 1975-11-11 Walter F Stugger Snow ski and edge
GB2068811A (en) * 1980-01-15 1981-08-19 Inoue Japax Res Method of and apparatus for discharge-surfacing electrically conductive workpieces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT397925B (de) * 1990-11-06 1994-08-25 Wintersteiger Gmbh & Co Bearbeitungsvorrichtung für skier

Also Published As

Publication number Publication date
JPH0379432B2 (de) 1991-12-18
EP0206676A3 (en) 1988-03-23
JPS61284272A (ja) 1986-12-15
CA1259529A (en) 1989-09-19

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