WO1993019823A1 - Shovel for cross-country skis - Google Patents

Shovel for cross-country skis Download PDF

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Publication number
WO1993019823A1
WO1993019823A1 PCT/AT1993/000060 AT9300060W WO9319823A1 WO 1993019823 A1 WO1993019823 A1 WO 1993019823A1 AT 9300060 W AT9300060 W AT 9300060W WO 9319823 A1 WO9319823 A1 WO 9319823A1
Authority
WO
WIPO (PCT)
Prior art keywords
shovel
cross
ski
country
country ski
Prior art date
Application number
PCT/AT1993/000060
Other languages
German (de)
French (fr)
Inventor
Walter Eder
Original Assignee
Walter Eder
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 Walter Eder filed Critical Walter Eder
Priority to EP93906365A priority Critical patent/EP0633803B1/en
Priority to DE59307790T priority patent/DE59307790D1/en
Publication of WO1993019823A1 publication Critical patent/WO1993019823A1/en

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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
    • A63C5/052—Structure of the surface thereof of the tips or rear ends

Definitions

  • the invention relates to a cross-country ski shovel which is wholly or partly only doubly curved in its edge region.
  • the simply curved design of the cross-country ski shovel also has the disadvantage that, in the case of an unfocused driving style, in particular on descents, there is a slight possibility of blending and thus of the risk of falling.
  • the present invention is therefore based on the object of reducing the shear effect of the cross-country ski shovel, thereby increasing the possible speed of a runner with the same amount of force and reducing the risk of blending and thus of a fall.
  • the tread of the ski is physically formed in the area of the shovel in such a way that it is wholly or partly only doubly curved in its edge region in such a way that when resistance is encountered at one point this doubly curved tread of the shovel body the resulting force from the pressure, which corresponds to the thrust of the rotor and the back pressure, the
  • REPLACEMENT LEAF Resistance which the track wall opposes, is derived in such a way that the resultant and the running direction are not generally on a straight line.
  • Such a double curvature of the tread in the area of the blade means that almost all tangential planes placed at the contact points of the tread enclose an angle not equal to 90 ° with an idealized vertical side wall.
  • Such a physical design of the cross-country ski shovel can either be achieved in that a suitable molded part, as described above, is permanently or removably attached to a previously customary cross-country ski, or during the manufacture of the cross-country ski by a sufficient material thickness in the shovel area an appropriate shape is made possible.
  • the shear resistance which occurs on the tread of a cross-country ski slope in the event of contact with the side wall of the cross-country track is converted into a lower sliding resistance by the double curvature of the tread.
  • the reduced shearing effect also means that less snow is sheared into the lane itself by the ski from the side wall of the lane, which improves the grip of the cross-country ski at the moment of the push off.
  • the physical design of the cross-country ski shovel body in the form described allows the track wall and the running surface of the shovel body to touch tangentially, an improved ski guidance in the track and thus contributes significantly to reducing the risk of falling.
  • Figure 1 shows that when the cross-country ski pad of a conventional cross-country ski corresponding to the prior art touches the side wall of the cross-country track, the tangential plane at the points of contact of the tread of the ski paddle with the side wall plane of the track includes an angle of approximately 90 °.
  • the direction of travel, i.e. the thrust of the rotor (Pl) and the pressure resistance of the track (P2) lie with the point of contact
  • the figure also shows that the ski is lifted out of the track in the running direction, which ultimately leads to blending.
  • Figure 2 shows that the thrust of the rotor (Pl) with the resistance of the track wall (P2) at the point of contact (L) form a resultant force (R) on the now double-curved blade body, which pushes the ski into the track.
  • the tangential plane at the point of contact forms an angle not equal to 90 ° with the track wall.
  • FIG. 3 shows the physical design of the cross-country ski shovel with a double-curved tread when the shovel body is already produced in one piece with the ski during the production process of the ski.
  • FIG. 4 shows a cross-country ski shovel of a conventional cross-country ski, to which the double-curved shovel body is subsequently glued or attached in an otherwise permanent form.
  • the running surface of the double-curved blade body must be adjusted accordingly by grinding if necessary.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Road Paving Structures (AREA)
  • Tires In General (AREA)

Abstract

Prior art cross-country ski shovels have only simple curvature and thus always make an angle of about 90 DEG to the sides of the tracks. When a conventional cross-country ski shovel comes into contact with the track, the shear resistance forces and the snow pushed by this shearing action into the tracks reduce the speed of the skier. The use of ski shovels with dual curvature as proposed by the invention converts the shear resistance forces into lower sliding resistance forces, considerably reduces the amount of snow pushed into the tracks when the skis make contact with the track walls, thus increasing the potential speed of the skier. The fact that the track walls and the dual-curvature running surface of the ski shovel make contact tangentially improves ski control and significantly reduces the danger of falling.

Description

LANGLAUFSCHISCHAUFELKÖRPER CROSS-COUNTRY SKI BOWL BODY
Die Erfindung betrifft eine Langlaufschischaufel, die gänzlich oder zum Teil nur in ihrem Randbereich zweifach gekrümmt ausgebildet ist.The invention relates to a cross-country ski shovel which is wholly or partly only doubly curved in its edge region.
Stand der TechnikState of the art
Stand der Technik ist, daß die Lauffläche eines Langlaufschis auf Grund ihrer nur einfach gekrümmten Ausbildung auch im Bereich der Schaufel zur Seitenwand der Langlaufspur stets einen Winkel von ca. 90° bildet.State of the art is that the running surface of a cross-country ski always forms an angle of approx. 90 ° to the side wall of the cross-country track due to its simply curved design.
EntgegenhaltungReply
Beim Fahren berühren die Schier im Bereich der Aufbiegung fast immer die Seitenwände der Langlaufspuren. Dabei- wird mit einer einfach gekrümmten Langlaufschischaufel stets Schnee von der Seitenwand der Spur in die Spur selbst geschert. Der Scherwiderstand reduziert die Fahrgeschwindigkeit des Läufers. Weiters verändert der durch die Schaufel in die Spur gescherte Schnee die Fahrverhältnisse für den Läufer zusätzlich in einer negativen Weise dadurch, daß die verminderte Haftung auf Grund des lockeren Schnees im Moment des Abstosses die mögliche Fahrgeschwindigkeit des Läufers weitere herabsetzt.When driving, the skis almost always touch the side walls of the cross-country trails in the area of the bend. With a simply curved cross-country ski shovel, snow is always sheared from the side wall of the lane into the lane itself. The shear resistance reduces the speed of the runner. Furthermore, the snow sheared into the lane by the shovel additionally changes the driving conditions for the runner in a negative manner in that the reduced grip due to the loose snow at the moment of the push-off further reduces the run speed of the runner.
Die einfach gekrümmte Ausbildung der Langlaufschischaufel hat auch den Nachteil, daß bei unkonzentrierter Fahrweise, insbesondere bei Abfahrten, leicht die Möglichkeit des Verschneidens und damit der Sturzgefahr gegeben ist.The simply curved design of the cross-country ski shovel also has the disadvantage that, in the case of an unfocused driving style, in particular on descents, there is a slight possibility of blending and thus of the risk of falling.
AufgabenstellungTask
Der vorliegenden Erfindung liegt somit die Aufgabe zugrunde, die Scher¬ wirkung der Langlaufschischaufel zu reduzieren, dadurch die mögliche Ge¬ schwindigkeit eines Läufers bei gleichem Kraftaufwand zu erhöhen und die Gefahr des Verschneidens und damit die eines Sturzes zu vermindern.The present invention is therefore based on the object of reducing the shear effect of the cross-country ski shovel, thereby increasing the possible speed of a runner with the same amount of force and reducing the risk of blending and thus of a fall.
Beanspruchte ErfindungClaimed invention
Diese Aufgabe wird dadurch gelöst, daß die Lauffläche des Schis im Bereich der Schaufel körperhaft so ausgebildet wird, daß diese gänzlich oder zum Teil nur in ihrem Randbereich der Gestalt zweifach gekrümmt wird, daß bei Auftreffen eines Widerstandes an einem Punkt dieser zweifach gekrümmten Lauffläche des Schaufelkörpers die resultierende Kraft aus dem Druck, welcher der Schubkraft des Läufers entspricht, und dem Gegendruck, demThis object is achieved in that the tread of the ski is physically formed in the area of the shovel in such a way that it is wholly or partly only doubly curved in its edge region in such a way that when resistance is encountered at one point this doubly curved tread of the shovel body the resulting force from the pressure, which corresponds to the thrust of the rotor and the back pressure, the
ERSATZBLATT Widerstand, den die Spurwand entgegensetzt, so abgeleitet wird, daß in ihrem Grundriß diese Resultierende und die Laufrichtung in der Regel nicht auf einer Geraden liegen. Eine derartige zweifache Krümmung der Lauffläche im Bereich der Schaufel bedingt, daß nahezu alle an die Berührungspunkte der Lauffläche gelegten Tangentialebenen mit einer idealisiert gedachten senk¬ rechten Seitenwand einen Winkel ungleich von 90° einschließen.REPLACEMENT LEAF Resistance, which the track wall opposes, is derived in such a way that the resultant and the running direction are not generally on a straight line. Such a double curvature of the tread in the area of the blade means that almost all tangential planes placed at the contact points of the tread enclose an angle not equal to 90 ° with an idealized vertical side wall.
Eine solche körperhafte Ausbildung der Langlaufschischaufel kann entweder dadurch erzielt werden, daß ein geeigneter Formteil, wie zuvor beschrieben, an einen bisher handelsüblichen Langlaufschi in geeigneter Weise dauerhaft oder abnehmbar befestigt wird, oder bereits bei der Herstellung des Lang¬ laufschis durch eine ausreichende Materialstärke im Schaufelbereich eine entsprechende Ausformung ermöglicht wird.Such a physical design of the cross-country ski shovel can either be achieved in that a suitable molded part, as described above, is permanently or removably attached to a previously customary cross-country ski, or during the manufacture of the cross-country ski by a sufficient material thickness in the shovel area an appropriate shape is made possible.
Vorteile der ErfindungAdvantages of the invention
Der an der Lauffläche einer Langlaufschischaufei im Fall der Berührung mit der Seitenwand der Langlaufspur auftretende Scherwiderstand wird durch die zweifache Krümmung der Lauffläche in einen geringeren Gleitwiderstand über¬ geführt. Die reduzierte Scherwirkung hat auch zur Folge, daß durch den Schi von der Seitenwand der Spur weniger Schnee in die Spur selbst geschert wird, wodurch im Moment des Abstosses die Haftung des Langlaufschis verbessert wird. Diese Umstände erlauben auf Grund der Erfindung bei gleichem Kraftauf¬ wand eine erhöhte Geschwindigkeit des Langläufers.The shear resistance which occurs on the tread of a cross-country ski slope in the event of contact with the side wall of the cross-country track is converted into a lower sliding resistance by the double curvature of the tread. The reduced shearing effect also means that less snow is sheared into the lane itself by the ski from the side wall of the lane, which improves the grip of the cross-country ski at the moment of the push off. These circumstances allow an increased speed of the cross-country skier due to the invention with the same effort.
Die körperhafte Ausbildung des Langlaufschischaufelkörpers in der be¬ schriebenen Form erlaubt dadurch, daß sich Spurwand und Lauffläche des Schaufelkörpers tangential berühren, eine verbesserte Schiführung in der Spur und trägt somit wesentlich zur Verminderung der Sturzgefahr bei.The physical design of the cross-country ski shovel body in the form described allows the track wall and the running surface of the shovel body to touch tangentially, an improved ski guidance in the track and thus contributes significantly to reducing the risk of falling.
Darstellung zur Beschreibung Figur 1, Stand der TechnikRepresentation for description Figure 1, prior art
Figur 1 zeigt, daß, wenn die Langlaufschischaufei eines dem Stand der Technik entsprechenden herkömmlichen Langlaufschis die Seitenwand der Langlaufspur berührt, die Tangentialebene in den Berührungspunkten der Lauffläche der Schischaufel mit der Seitenwandebene der Spur ein Winkel von rund 90° einschließt. Die Laufrichtung, d.h. die Schubkraft des Läufers (Pl) und der Druckwiderstand der Spur (P2) liegen mit dem BerührungspunktFigure 1 shows that when the cross-country ski pad of a conventional cross-country ski corresponding to the prior art touches the side wall of the cross-country track, the tangential plane at the points of contact of the tread of the ski paddle with the side wall plane of the track includes an angle of approximately 90 °. The direction of travel, i.e. the thrust of the rotor (Pl) and the pressure resistance of the track (P2) lie with the point of contact
ERSATZBLATT (L) und der aus Druck und Gegendruck resultierenden Kraft (R) im Grundriß auf einer Geraden.ER S ATZBLATT (L) and the force (R) resulting from pressure and back pressure in the plan on a straight line.
Die Figur zeigt auch, daß der Schi in Laufrichtung aus der Spur gehoben wird, was letztlich zum Verschneiden führt.The figure also shows that the ski is lifted out of the track in the running direction, which ultimately leads to blending.
Figur 2, Allgemeine Darstellung der ErfindungFigure 2, General representation of the invention
Figur 2 zeigt, daß die Schubkraft des Läufers (Pl) mit dem Widerstand der Spurwand (P2) im Berührungspunkt (L) auf dem nunmehr zweifach gekrümmten Schaufelkörper eine resultierende Kraft (R) ausbilden, die den Schi in die Spur drückt. Die Tangentialebene im Berührungspunkt bildet mit der Spurwand einen Winkel ungleich 90°. Dadurch wird der Scherwiderstand im Bereich der Langlaufschischaufel in einen Gleitwiderstand übergeführt. Dies trägt ebenso wie das verminderte Abscheren von Neuschnee in die Laufspur zu einer Erhöhung der möglichen Geschwindigkeit des Langläufers bei.Figure 2 shows that the thrust of the rotor (Pl) with the resistance of the track wall (P2) at the point of contact (L) form a resultant force (R) on the now double-curved blade body, which pushes the ski into the track. The tangential plane at the point of contact forms an angle not equal to 90 ° with the track wall. As a result, the shear resistance in the area of the cross-country ski blade is converted into a sliding resistance. Like the reduced shearing of fresh snow into the running track, this contributes to an increase in the possible speed of the cross-country skier.
Figur 3,Figure 3,
Langlaufschischaufei mit integriertem zweifach gekrümmtem Schaufelkörper, entsprechend Anspruch 2Cross-country ski shovel with integrated double-curved shovel body, according to claim 2
Figur 3 zeigt die körperhafte Ausbildung der Langlaufschischaufel mit zweifach gekrümmter Lauffläche, wenn der Schaufelkörper bereits im Pro¬ duktionsprozeß des Schis in einem Stück mit dem Schi gefertigt wird.FIG. 3 shows the physical design of the cross-country ski shovel with a double-curved tread when the shovel body is already produced in one piece with the ski during the production process of the ski.
Figur 4,Figure 4,
Langlaufschischaufei mit zweifach gekrü-nntem Schaufelkörper, auf konven¬ tionellem Langlaufschi nachträglich bleibend befestigt, entsprechend Anspruch 3Cross-country ski slope with a double-curved blade body, permanently attached to conventional cross-country ski, according to claim 3
Figur 4 zeigt eine Langlaufschischaufel eines herkömmlichen Langlaufschis, auf den der zweifach gekrümmte Schaufelkörper nachträglich bleibend geklebt oder in einer sonst dauerhaften Form befestigt wird. Bei unterschiedlicher Schispitzenausbildung der verschiedenen Fabrikate muß die Lauffläche des zweifach gekrümmten Schaufelkörpers bei Bedarf durch Schleifen entsprechend angepaßt werden.FIG. 4 shows a cross-country ski shovel of a conventional cross-country ski, to which the double-curved shovel body is subsequently glued or attached in an otherwise permanent form. In the case of different ski tip designs of the different brands, the running surface of the double-curved blade body must be adjusted accordingly by grinding if necessary.
Figur 5,Figure 5,
Langlaufschisshaufel mit zweifach gekrüπmtem aufgestecktem Schaufelkörper, entsprechend Anspruch 4Cross-country skiing shovel with a double curved plug-on shovel body, according to claim 4
ERSATZBLATT Figur 6,REPLACEMENT LEAF Figure 6,
Langlaufschischaufei mit zweifach gekrümπtem aufgestecktem Schaufelkörper, entsprechend Anspruch 5Cross-country ski shovel with a double curved shovel body, according to claim 5
ERSATZBLATT REPLACEMENT LEAF

Claims

PATENTANSPRÜCHE PATENT CLAIMS
Anspruch 1Claim 1
Langlaufschischaufel, dadurch gekennzeichnet, daß die Lauffläche des Schis im Bereich der Schaufel gänzlich oder zum Teil nur in ihrem Randbereich zweifach gekrümmt ist, mit der Folge, daß der überwiegende Teil der Be¬ rührungspunkte dieser zweifach gekrümmten Lauffläche der Schaufel mit ihren Tangentialebenen zur einer idealisierten senkrechten Seitenwand der Lang¬ laufspur einen Winkel von ungleich 90° bilden, wodurch bei Auftreten eines Widerstandes an einem Punkt dieser zweifach gekrümmten Lauffläche des Schaufelkörpers die resultierende Kraft (R) aus der Schubkraft des Lang¬ läufers (Pl) und den Gegendruck, den die Spurwand entgegensetzt (P2) so abgeleitet wird, daß diese Resultierende und die Laufrichtung in ihrem Grundriß nicht auf einer Geraden liegen.Cross-country ski shovel, characterized in that the running surface of the ski in the region of the shovel is wholly or partly only twice curved in its edge region, with the result that the majority of the contact points of this double-curved running surface of the shovel with their tangential planes form an idealized one vertical side wall of the cross-country track form an angle of not equal to 90 °, as a result of which, when resistance occurs at one point of this double-curved running surface of the blade body, the resulting force (R) from the thrust force of the cross-country skier (Pl) and the counterpressure which the Opposed track wall (P2) is derived so that this resultant and the running direction in their plan are not on a straight line.
Anspruch 2Claim 2
Langlaufschischaufel nach Anspruch 1, dadurch gekennzeichnet, daß der Schau¬ felkörper in der beschriebenen Form bereits in der Herstellung des Langlauf¬ schis mit dem Schi selbst eine Einheit bildet.Cross-country ski shovel according to claim 1, characterized in that the blade body in the form described already forms a unit with the ski itself in the manufacture of the cross-country ski.
Anspruch 3Claim 3
Langlaufschischaufel nach Anspruch 1, dadurch gekennzeichnet, daß ein Form¬ teil mit zweifach gekrümmter Lauffläche an der Schaufel eines handels¬ üblichen Langlaufschis mit einfacher Krümmung der Schaufel dauerhaft be¬ festigt wird.Cross-country ski shovel according to claim 1, characterized in that a molded part with a double curved tread is permanently attached to the shovel of a conventional cross-country ski with a simple curvature of the shovel.
Anspruch 4Claim 4
Langlaufschischaufel nach Anspruch 1, dadurch gekennzeichnet, daß ein Form¬ te!1 mit zweifach gekrümmter Lauffläche an der Schaufel eines handels¬ üblichen Langlaufschis mit einfacher Krümmung der Schaufel durch Aufstecken wieder abnehmbar befestigt wird.Cross-country ski scoop according to claim 1, characterized in that a Form¬ te! 1 with double curved tread on the shovel of a conventional cross-country ski with simple curvature of the shovel is removably attached by plugging.
Anspruch 5Claim 5
Langlaufschischaufel nach Anspruch 1, dadurch gekennzeichnet, daß zwei Formteile mit zweifach gekrümmter Lauffläche an der Schaufel eines handels¬ üblichen Langlaufschis mit einfacher Krümmung der Schaufel durch Aufstecken an jeweils den beiden Rändern der Schaufel wieder abnehmbar befestigt wird.Cross-country ski shovel according to claim 1, characterized in that two molded parts with a double curved running surface are removably attached to the shovel of a conventional cross-country ski with a simple curvature of the shovel by plugging onto the two edges of the shovel.
ERSATZBLATT REPLACEMENT LEAF
PCT/AT1993/000060 1992-04-01 1993-03-31 Shovel for cross-country skis WO1993019823A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP93906365A EP0633803B1 (en) 1992-04-01 1993-03-31 Cross-country ski
DE59307790T DE59307790D1 (en) 1992-04-01 1993-03-31 CROSS-COUNTRY SKI

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA665/92 1992-04-01
AT0066592A AT401733B (en) 1992-04-01 1992-04-01 CROSS-COUNTRY SKI

Publications (1)

Publication Number Publication Date
WO1993019823A1 true WO1993019823A1 (en) 1993-10-14

Family

ID=3496590

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1993/000060 WO1993019823A1 (en) 1992-04-01 1993-03-31 Shovel for cross-country skis

Country Status (4)

Country Link
EP (1) EP0633803B1 (en)
AT (1) AT401733B (en)
DE (1) DE59307790D1 (en)
WO (1) WO1993019823A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH250570A (en) * 1941-02-17 1947-08-31 Sachers Fritz Ski.
DE2638928A1 (en) * 1976-08-28 1978-03-02 Finkenauer Werner Ski tip with spoiler - facilitates skiing in deep snow conditions and is integrally fitted or attached later
FR2554004A1 (en) * 1983-11-02 1985-05-03 Goujon Gerard DEVICE FOR IMPROVING THE BEHAVIOR AND PERFORMANCE OF SNOW AND WATER SLIDING MACHINES
FR2589072A1 (en) * 1985-10-28 1987-04-30 Salomon Sa Cross-country ski
EP0456980A1 (en) * 1990-05-17 1991-11-21 Salomon S.A. Ski

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2556650A1 (en) * 1975-12-16 1977-06-23 Voelkl Ohg Franz Keel attachment for front end of ski - has scoop shaped blade which improves ski guidance in difficult snow conditions
FR2544210B1 (en) * 1983-04-12 1985-08-09 Rossignol Sa Club Rossignol Sk SKI
AT389452B (en) * 1986-01-10 1989-12-11 Head Sportgeraete Gmbh SKI
FR2594346B1 (en) * 1986-02-19 1988-09-30 Rossignol Sa CROSS-COUNTRY SKIING

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH250570A (en) * 1941-02-17 1947-08-31 Sachers Fritz Ski.
DE2638928A1 (en) * 1976-08-28 1978-03-02 Finkenauer Werner Ski tip with spoiler - facilitates skiing in deep snow conditions and is integrally fitted or attached later
FR2554004A1 (en) * 1983-11-02 1985-05-03 Goujon Gerard DEVICE FOR IMPROVING THE BEHAVIOR AND PERFORMANCE OF SNOW AND WATER SLIDING MACHINES
FR2589072A1 (en) * 1985-10-28 1987-04-30 Salomon Sa Cross-country ski
EP0456980A1 (en) * 1990-05-17 1991-11-21 Salomon S.A. Ski

Also Published As

Publication number Publication date
ATA66592A (en) 1996-04-15
DE59307790D1 (en) 1998-01-15
EP0633803B1 (en) 1997-12-03
EP0633803A1 (en) 1995-01-18
AT401733B (en) 1996-11-25

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