EP2599528B1 - Ice screw for forming a removable mooring point comprising a sharpening recess at the base of each tooth - Google Patents

Ice screw for forming a removable mooring point comprising a sharpening recess at the base of each tooth Download PDF

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Publication number
EP2599528B1
EP2599528B1 EP12354050.2A EP12354050A EP2599528B1 EP 2599528 B1 EP2599528 B1 EP 2599528B1 EP 12354050 A EP12354050 A EP 12354050A EP 2599528 B1 EP2599528 B1 EP 2599528B1
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EP
European Patent Office
Prior art keywords
tooth
bit
cutting edge
notch
base
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EP12354050.2A
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German (de)
French (fr)
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EP2599528A1 (en
Inventor
Alain Maurice
Guillaume Bonnet
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Zedel SAS
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Zedel SAS
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B29/00—Apparatus for mountaineering
    • A63B29/02—Mountain guy-ropes or accessories, e.g. avalanche ropes; Means for indicating the location of accidentally buried, e.g. snow-buried, persons
    • A63B29/025—Ice screws

Definitions

  • FIG. figure 1 In the field of vertical sports, there are removable docking devices, in particular of the ice-pin type as illustrated in FIG. figure 1 , comprising an elongate tubular shaft 1 having an external thread 2 and a bit 3 provided with teeth 4.
  • the bit 3, illustrated in greater detail in FIG. figure 2 is disposed at a longitudinal end E I1 of the barrel 1.
  • Each tooth 4 has a cutting edge 5.
  • a head 6 equipped with a fastening lug is secured to the barrel 1.
  • This attachment lug typically has the purpose of forming a point of securing a climber, and allow the rotational drive to screw the barrel 1 in the ice .
  • the sharpening of the cutting edge oriented to face the direction of screwing and another cutting edge of the tooth opposite to the previous cutting edge, to delimit the top of the tooth also allows to sharpen the top of the associated tooth to obtain a tip.
  • the document EP 1491238 describes an ice pin with a trephine whose sharpening is complicated to achieve.
  • the document SU 939891 refers to a tool for drilling a hole in the ice. Such a tool does not have an elongated shaft with an external thread, and is generally used by fishermen, not mountaineers. It is noted that the tooth is not sharpened laterally. The sharpened area is at the bottom of the tooth.
  • the object of the invention is to provide an ice pin whose sharpening is facilitated.
  • This object is tending in that a notch is formed in the bit at the base of each cutting edge so as to delimit a sharpening reserve of the associated tooth.
  • the pin includes a control defining an end-of-life state of said bit.
  • the end-of-life state can be configured to be reached when the cutting edge of one of the teeth coincides with the bottom of the notch.
  • the cutting edge of a tooth extends from the top of said tooth to the associated notch.
  • the notch associated with a tooth may have a concave shape beginning at the base of the cutting edge, opposite the top of the tooth, and terminating at the base of the adjacent tooth located opposite the cutting edge.
  • bit teeth are formed in the extension of the barrel, and each notch is formed along an axis perpendicular to the longitudinal axis of the barrel.
  • bit teeth may be four in number and angularly staggered around the longitudinal axis of the barrel, so that the four notches are two by two respectively along a first axis and a second axis. axis, said first and second axes being located in the same plane and perpendicular to each other, said plane being perpendicular to the longitudinal axis of the barrel.
  • the ice pin is intended to form a removable docking point and differs in particular from the prior art by the shape of its bit.
  • the bit is shaped so that each tooth has at its base a sharpening reserve to facilitate the maintenance steps referred to in the state of the art.
  • the ice-cream spit has an elongate tubular shaft 1 having an external thread 2.
  • the threading advantageously makes it easier to screw the body of the barrel into ice.
  • the spindle further comprises a bit 3 provided with teeth 4, each tooth 4 having a cutting edge 5.
  • the bit 3 is disposed at a longitudinal end E I1 of the barrel 1.
  • the role of the bit 3 is to promote the penetration of the pin into the ice by drilling.
  • each tooth 4 has at its base a notch 8 to facilitate its sharpening.
  • the sharpening reserve makes it possible to have a stock of material intended to reform a sharp cutting edge if the latter becomes dull.
  • the cutting edge 5 of a tooth 4 extends from the top 9 of said tooth 4 to the associated slot 8.
  • the base 5a of the cutting edge 5, opposite the apex 9, advantageously coincides with a flange of the notch 8.
  • This cutting edge 5 can be delimited by a bevel located in the tooth 4 forming a sharp blade and sharp on at least one side of the blade.
  • the ice-spit comprises a tell-tale defining an end-of-life state of said bit 3.
  • This tell-tale may be in any form, for example a graduation which, when it is reached, means that it is no longer necessary to sharpen the bit. 3, but need to change the spindle for security reasons.
  • this end of life indicator can be implemented directly by the notch 8 itself, so the end of life state can be reached when the cutting edge 5 of one of the teeth 4 coincides with the bottom 8a of the notch 8.
  • the notch 8 associated with a tooth has a concave shape, advantageously of rounded type, starting from the base 5a of the cutting edge 5, opposite the vertex 9 of the tooth 4, and ending at the base 4a of the adjacent tooth ( figure 4 ) opposite a cutting edge 5.
  • a notch 8 may comprise two flanges distant from the bottom of the notch and coinciding respectively with the base of a cutting edge and the base of an adjacent tooth. associated.
  • the teeth 4 of the bit 3 are formed in the extension of the barrel 1, and each notch 8 is formed along an axis perpendicular to the longitudinal axis A3 of the barrel 1.
  • the bit 3 and the barrel 1 may be monobloc.
  • the teeth 4 of the bit 3, formed in the extension of the shaft 1 are four in number and are angularly staggered about the longitudinal axis A3 of the shaft 1, so that advantageously the four notches 8 are two by two placed respectively along a first A1 and a second axis A2, said first and second axes A1, A2 being located in the same plane and perpendicular to each other, said plane being perpendicular to the longitudinal axis A3 of the barrel 1.
  • This allows, for example, to facilitate the manufacture of the spindle and its sharpening.
  • two notches associated with the same first axis, or second axis each have a shape of an arc of circle whose center of circle is located on the axis associated.
  • these two notches are advantageously symmetrical with respect to the point of intersection between the longitudinal axis A3 of the barrel 1 and the first or second axis associated with said notches.
  • the tubular barrel is advantageously opening at its two ends so as to form a core of ice when screwing the pin in the ice, and to allow the extraction of this carrot ice after removing the ice pin in which it was screwed.
  • the notch made at each tooth makes it easy to sharpen with a file over the entire height of the cutting edge.
  • the notch makes it possible to clearly indicate a sharpening limit of the spindle.
  • the trephine 3 makes it possible to drill the ice for example during the ascent of an ice cascade.
  • the bit 3 cooperates with the thread 2 during screwing of the pin in the ice.
  • the cutting edges, associated with the notches, of the different teeth are therefore advantageously all oriented in the direction of screwing of the ice pin by its end comprising the bit 3.
  • the inner surface of the tube forming the barrel 1 is delimited by a body of revolution obtained by the revolution of a straight line around the longitudinal axis A3 of the tubular barrel 1.
  • the tooth may have cutting edges.
  • the top 9 of the tooth is delimited by two cutting edges 5 and 10 joining.
  • the sharpening of these edges makes it possible to obtain a tooth as sharp as possible so as to favor penetration into the ice.
  • the notch 8 of a tooth is formed at the base of the cutting edge 5 facing the screwing direction (in the example of the figure 4 , the screwing direction corresponds to the anti-clockwise direction).

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention est relative à une broche à glace pour former un point d'amarrage amovible, ladite broche comportant :

  • un fût tubulaire allongé doté d'un filetage extérieur,
  • un trépan muni de dents, chaque dent comportant une arête de coupe, ledit trépan étant disposé à une extrémité longitudinale du fût.
The invention relates to an ice pin for forming a removable docking point, said pin comprising:
  • an elongated tubular shaft with an external thread,
  • a bit provided with teeth, each tooth having a cutting edge, said bit being disposed at a longitudinal end of the barrel.

État de la techniqueState of the art

Dans le domaine des sports verticaux, il existe des dispositifs d'amarrage amovibles, notamment du type broche à glace comme illustré à la figure 1, comportant un fût 1 tubulaire allongé doté d'un filetage 2 extérieur et d'un trépan 3 muni de dents 4. Le trépan 3, illustré plus en détail à la figure 2 est disposé à une extrémité longitudinale EI1 du fût 1. Chaque dent 4 comporte une arête de coupe 5. En opposition au trépan 3, c'est-à-dire à l'autre extrémité longitudinale EI2 du fût 1, une tête 6 équipée d'une patte d'attache est solidarisée au fût 1. Cette patte d'attache a typiquement pour utilité de former un point de sécurisation d'un grimpeur, et de permettre l'entraînement en rotation pour visser le fût 1 dans la glace.In the field of vertical sports, there are removable docking devices, in particular of the ice-pin type as illustrated in FIG. figure 1 , comprising an elongate tubular shaft 1 having an external thread 2 and a bit 3 provided with teeth 4. The bit 3, illustrated in greater detail in FIG. figure 2 is disposed at a longitudinal end E I1 of the barrel 1. Each tooth 4 has a cutting edge 5. In opposition to the bit 3, that is to say at the other longitudinal end E I2 of the barrel 1, a head 6 equipped with a fastening lug is secured to the barrel 1. This attachment lug typically has the purpose of forming a point of securing a climber, and allow the rotational drive to screw the barrel 1 in the ice .

Il est fréquent que les arêtes de coupe 5 s'émoussent au fur et à mesure de l'utilisation du trépan 3. Dans ce cas, un utilisateur peut, comme illustré à la figure 3, réaliser une étape de maintenance de son dispositif d'amarrage en utilisant une lime 7 d'affûtage pour affûter le tranchant de la dent 4 au niveau de son arête de coupe 5. Cependant, un tel affûtage n'est pas aisé et demande une certaine dextérité pour ne pas entamer le fût 1 du dispositif. De plus, si le fût 1 est entamé lors de l'affûtage, ceci peut, dans certains cas extrêmes, porter préjudice à l'intégrité du dispositif ou à ses performances d'utilisation.It is common for the cutting edges 5 to become dull as the bit 3 is used. In this case, a user can, as illustrated in FIG. figure 3 , carry out a maintenance step of its mooring device by using a grinding file 7 to sharpen the edge of tooth 4 at the level of However, such sharpening is not easy and requires a certain dexterity to not tamper with the barrel 1 of the device. In addition, if the barrel 1 is started during sharpening, this can, in extreme cases, damage the integrity of the device or its performance of use.

En outre, l'affûtage de l'arête de coupe orientée de sorte à faire face à la direction de vissage et d'une autre arête de coupe de la dent opposée à l'arête de coupe précédente, pour délimiter le sommet de la dent, permet aussi d'affûter le sommet de la dent associée pour obtenir une pointe.In addition, the sharpening of the cutting edge oriented to face the direction of screwing and another cutting edge of the tooth opposite to the previous cutting edge, to delimit the top of the tooth , also allows to sharpen the top of the associated tooth to obtain a tip.

Le document EP 1491238 décrit une broche à glace avec un trépan dont l'affûtage est compliqué à réaliser.The document EP 1491238 describes an ice pin with a trephine whose sharpening is complicated to achieve.

Le document SU 939891 se rapporte à un outil pour forer un trou dans la glace. Un tel outil ne possède pas de fût allongé doté d'un filetage extérieur, et est généralement utilisé par des pêcheurs, et non pas par des alpinistes., On note que la dent n'est pas affûtée latéralement. La zone affûtée se trouve au fond de la dent.The document SU 939891 refers to a tool for drilling a hole in the ice. Such a tool does not have an elongated shaft with an external thread, and is generally used by fishermen, not mountaineers. It is noted that the tooth is not sharpened laterally. The sharpened area is at the bottom of the tooth.

Objet de l'inventionObject of the invention

L'objet de l'invention consiste à réaliser une broche à glace dont l'affûtage est facilité.The object of the invention is to provide an ice pin whose sharpening is facilitated.

On tend vers cet objet en ce qu'une encoche est formée dans le trépan à la base de chaque arête de coupe de sorte à délimiter une réserve d'affûtage de la dent associée.This object is tending in that a notch is formed in the bit at the base of each cutting edge so as to delimit a sharpening reserve of the associated tooth.

Selon une réalisation, la broche comporte un témoin définissant un état de fin de vie dudit trépan. L'état de fin de vie peut être configuré de sorte à être atteint lorsque l'arête de coupe d'une des dents coïncide avec le fond de l'encoche.In one embodiment, the pin includes a control defining an end-of-life state of said bit. The end-of-life state can be configured to be reached when the cutting edge of one of the teeth coincides with the bottom of the notch.

Avantageusement, l'arête de coupe d'une dent s'étend du sommet de ladite dent à l'encoche associée.Advantageously, the cutting edge of a tooth extends from the top of said tooth to the associated notch.

L'encoche associée à une dent peut avoir une forme concave commençant de la base de l'arête de coupe, opposée au sommet de la dent, et se terminant à la base de la dent adjacente située en regard de l'arête de coupe.The notch associated with a tooth may have a concave shape beginning at the base of the cutting edge, opposite the top of the tooth, and terminating at the base of the adjacent tooth located opposite the cutting edge.

Selon une mise en oeuvre, les dents du trépan sont formées dans le prolongement du fût, et chaque encoche est formée selon un axe perpendiculaire à l'axe longitudinal du fût.In one embodiment, the bit teeth are formed in the extension of the barrel, and each notch is formed along an axis perpendicular to the longitudinal axis of the barrel.

Particulièrement, les dents du trépan peuvent être au nombre de quatre et être échelonnées angulairement, autour de l'axe longitudinal du fût, de sorte que les quatre encoches soient deux à deux placées respectivement le long d'un premier axe et d'un second axe, lesdits premier et second axes étant situés dans un même plan et perpendiculaires entre eux, ledit plan étant perpendiculaire à l'axe longitudinal du fût.In particular, the bit teeth may be four in number and angularly staggered around the longitudinal axis of the barrel, so that the four notches are two by two respectively along a first axis and a second axis. axis, said first and second axes being located in the same plane and perpendicular to each other, said plane being perpendicular to the longitudinal axis of the barrel.

Description sommaire des dessinsBrief description of the drawings

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre de modes particuliers de réalisation de l'invention donnés à titre d'exemples non limitatifs et représentés aux dessins annexés, dans lesquels :

  • La figure 1 représente une broche à glace selon l'art antérieur.
  • La figure 2 illustre une vue détaillée du trépan de la figure 1.
  • La figure 3 illustre une étape de maintenance effectuée sur le trépan de la figure 2.
  • La figure 4 illustre un trépan selon un mode de réalisation de l'invention.
Other advantages and features will emerge more clearly from the following description of particular embodiments of the invention given by way of non-limiting example and represented in the accompanying drawings, in which:
  • The figure 1 represents an ice pin according to the prior art.
  • The figure 2 illustrates a detailed view of the drill bit of the figure 1 .
  • The figure 3 illustrates a maintenance step performed on the drill bit of the figure 2 .
  • The figure 4 illustrates a drill bit according to one embodiment of the invention.

Description de modes préférentiels de réalisationDescription of preferred embodiments

La broche à glace est destinée à former un point d'amarrage amovible et diffère notamment de l'art antérieur par la forme de son trépan. En fait, le trépan est conformé de sorte que chaque dent comporte à sa base une réserve d'affûtage pour faciliter les étapes de maintenance visées dans l'état de la technique.The ice pin is intended to form a removable docking point and differs in particular from the prior art by the shape of its bit. In fact, the bit is shaped so that each tooth has at its base a sharpening reserve to facilitate the maintenance steps referred to in the state of the art.

Ainsi, comme sur la figure 1, la broche à glace comporte un fût 1 tubulaire allongé doté d'un filetage extérieur 2. Le filetage permet avantageusement de faciliter le vissage du corps du fût dans de la glace. La broche comporte en outre un trépan 3 muni de dents 4, chaque dent 4 comportant une arête de coupe 5. Le trépan 3 est disposé à une extrémité longitudinale EI1 du fût 1.So, as on the figure 1 the ice-cream spit has an elongate tubular shaft 1 having an external thread 2. The threading advantageously makes it easier to screw the body of the barrel into ice. The spindle further comprises a bit 3 provided with teeth 4, each tooth 4 having a cutting edge 5. The bit 3 is disposed at a longitudinal end E I1 of the barrel 1.

Le rôle du trépan 3 est de favoriser la pénétration de la broche dans la glace par forage.The role of the bit 3 is to promote the penetration of the pin into the ice by drilling.

Comme illustré à la figure 4, une encoche 8 est formée dans le trépan 3 à la base de chaque arête de coupe 5 de sorte à délimiter une réserve d'affûtage de la dent associée. Autrement dit, chaque dent 4 comporte à sa base une encoche 8 permettant de faciliter son affûtage.As illustrated in figure 4 a notch 8 is formed in the bit 3 at the base of each cutting edge 5 so as to define a sharpening reserve of the associated tooth. In other words, each tooth 4 has at its base a notch 8 to facilitate its sharpening.

La réserve d'affûtage permet d'avoir une réserve de matière destinée à reformer une arête de coupe 5 tranchante si cette dernière venait à s'émousser.The sharpening reserve makes it possible to have a stock of material intended to reform a sharp cutting edge if the latter becomes dull.

Avantageusement, l'arête de coupe 5 d'une dent 4 s'étend du sommet 9 de ladite dent 4 à l'encoche 8 associée. En fait, la base 5a de l'arête de coupe 5, opposée au sommet 9, coïncide avantageusement avec un rebord de l'encoche 8. Cette arête de coupe 5 peut être délimitée par un biseau localisé de la dent 4 formant une lame aiguë et tranchante sur au moins un côté de la lame.Advantageously, the cutting edge 5 of a tooth 4 extends from the top 9 of said tooth 4 to the associated slot 8. In fact, the base 5a of the cutting edge 5, opposite the apex 9, advantageously coincides with a flange of the notch 8. This cutting edge 5 can be delimited by a bevel located in the tooth 4 forming a sharp blade and sharp on at least one side of the blade.

Selon une variante, la broche à glace comporte un témoin définissant un état de fin de vie dudit trépan 3. Ce témoin peut se présenter sous toute forme, par exemple une graduation qui quand elle est atteinte signifie qu'il ne faut plus affûter le trépan 3, mais qu'il faut changer la broche pour des raisons de sécurité. Avantageusement, ce témoin de fin de vie peut être mis en oeuvre directement par l'encoche 8 elle même, ainsi l'état de fin de vie peut être atteint lorsque l'arête de coupe 5 d'une des dents 4 coïncide avec le fond 8a de l'encoche 8. Typiquement, bien que cela ne soit pas représenté, lorsqu'une dent 4 du trépan 3 de la broche à glace a tellement été affûtée, de sorte à consommer toute sa réserve d'affûtage, on se retrouve dans une situation telle que celle illustrée aux figures 2 et 3, et dans ce cas la broche à glace doit être changée.According to one variant, the ice-spit comprises a tell-tale defining an end-of-life state of said bit 3. This tell-tale may be in any form, for example a graduation which, when it is reached, means that it is no longer necessary to sharpen the bit. 3, but need to change the spindle for security reasons. Advantageously, this end of life indicator can be implemented directly by the notch 8 itself, so the end of life state can be reached when the cutting edge 5 of one of the teeth 4 coincides with the bottom 8a of the notch 8. Typically, although it is not shown, when a tooth 4 of the bit 3 of the ice pin has been so sharpened so as to consume all its sharpening reserve, one finds oneself in a situation such as that illustrated in Figures 2 and 3 , and in this case the ice screw must be changed.

Selon une variante, l'encoche 8 associée à une dent a une forme concave, avantageusement de type arrondi, commençant de la base 5a de l'arête de coupe 5, opposée au sommet 9 de la dent 4, et se terminant à la base 4a de la dent adjacente (figure 4) située en regard de l'arête de coupe 5. Autrement dit, une encoche 8 peut comporter deux rebords distants du fond de l'encoche et coïncidant respectivement avec la base d'une arête de coupe et de la base d'une dent adjacente associées.According to a variant, the notch 8 associated with a tooth has a concave shape, advantageously of rounded type, starting from the base 5a of the cutting edge 5, opposite the vertex 9 of the tooth 4, and ending at the base 4a of the adjacent tooth ( figure 4 ) opposite a cutting edge 5. In other words, a notch 8 may comprise two flanges distant from the bottom of the notch and coinciding respectively with the base of a cutting edge and the base of an adjacent tooth. associated.

Selon un mode de réalisation, les dents 4 du trépan 3 sont formées dans le prolongement du fût 1, et chaque encoche 8 est formée selon un axe perpendiculaire à l'axe longitudinal A3 du fût 1. Autrement dit, le trépan 3 et le fût 1 peuvent être monoblocs.According to one embodiment, the teeth 4 of the bit 3 are formed in the extension of the barrel 1, and each notch 8 is formed along an axis perpendicular to the longitudinal axis A3 of the barrel 1. In other words, the bit 3 and the barrel 1 may be monobloc.

Avantageusement sur la figure 4, les dents 4 du trépan 3, formées dans le prolongement du fût 1, sont au nombre de quatre et sont échelonnées angulairement, autour de l'axe longitudinal A3 du fût 1, de sorte qu'avantageusement les quatre encoches 8 soient deux à deux placées respectivement le long d'un premier A1 et d'un second A2 axes, lesdits premier et second axes A1, A2 étant situés dans un même plan et perpendiculaires entre eux, ledit plan étant perpendiculaire à l'axe longitudinal A3 du fût 1. Ceci permet, par exemple, de faciliter la fabrication de la broche et son affûtage.Advantageously on the figure 4 , the teeth 4 of the bit 3, formed in the extension of the shaft 1, are four in number and are angularly staggered about the longitudinal axis A3 of the shaft 1, so that advantageously the four notches 8 are two by two placed respectively along a first A1 and a second axis A2, said first and second axes A1, A2 being located in the same plane and perpendicular to each other, said plane being perpendicular to the longitudinal axis A3 of the barrel 1. This allows, for example, to facilitate the manufacture of the spindle and its sharpening.

Selon une réalisation particulière, facilitant notamment l'affûtage et la fabrication de la broche, deux encoches associées à un même premier axe, ou second axe, ont chacune une forme d'arc de cercle dont le centre de cercle est situé sur l'axe associé. De plus, ces deux encoches sont avantageusement symétriques par rapport au point d'intersection entre l'axe longitudinal A3 du fût 1 et le premier, ou second, axe associé auxdites encoches.According to a particular embodiment, facilitating in particular the sharpening and the manufacture of the spindle, two notches associated with the same first axis, or second axis, each have a shape of an arc of circle whose center of circle is located on the axis associated. In addition, these two notches are advantageously symmetrical with respect to the point of intersection between the longitudinal axis A3 of the barrel 1 and the first or second axis associated with said notches.

Dans le cadre d'une utilisation en tant que broche à glace, le fût tubulaire est avantageusement débouchant à ses deux extrémités de sorte à former une carotte de glace lors du vissage de la broche dans la glace, et à permettre l'extraction de cette carotte de glace après retrait de la broche de la glace dans laquelle elle était vissée.In the context of use as an ice pin, the tubular barrel is advantageously opening at its two ends so as to form a core of ice when screwing the pin in the ice, and to allow the extraction of this carrot ice after removing the ice pin in which it was screwed.

L'encoche réalisée au niveau de chaque dent permet de faciliter l'affûtage à l'aide d'une lime sur toute la hauteur de l'arête de coupe. De plus l'encoche permet d'indiquer clairement une limite d'affûtage de la broche.The notch made at each tooth makes it easy to sharpen with a file over the entire height of the cutting edge. In addition, the notch makes it possible to clearly indicate a sharpening limit of the spindle.

Comme indiqué, le trépan 3 permet de forer la glace par exemple lors de l'ascension d'une cascade de glace. Ainsi, le trépan 3 coopère avec le filetage 2 lors du vissage de la broche dans la glace. Les arêtes de coupes, associées aux encoches, des différentes dents sont donc avantageusement toutes orientées selon la direction de vissage de la broche à glace par son extrémité comportant le trépan 3.As indicated, the trephine 3 makes it possible to drill the ice for example during the ascent of an ice cascade. Thus, the bit 3 cooperates with the thread 2 during screwing of the pin in the ice. The cutting edges, associated with the notches, of the different teeth are therefore advantageously all oriented in the direction of screwing of the ice pin by its end comprising the bit 3.

Avantageusement, sur les figures la surface intérieure du tube formant le fût 1 est délimitée par un corps de révolution obtenu par la révolution d'une droite autour de l'axe longitudinal A3 du fût 1 tubulaire.Advantageously, in the figures, the inner surface of the tube forming the barrel 1 is delimited by a body of revolution obtained by the revolution of a straight line around the longitudinal axis A3 of the tubular barrel 1.

Bien qu'il ait été décrit une dent avec une arête de coupe, la dent peut comporter des arêtes de coupe. Par exemple sur la figure 4, le sommet 9 de la dent est délimité par deux arêtes de coupe 5 et 10 se rejoignant. L'affûtage de ces arêtes permet d'obtenir une dent la plus pointue possible de sorte à favoriser la pénétration dans la glace. L'encoche 8 d'une dent est formée à la base de l'arête de coupe 5 faisant face à la direction de vissage (dans l'exemple de la figure 4, la direction de vissage correspond au sens anti-horaire). Although a tooth with a cutting edge has been described, the tooth may have cutting edges. For example on the figure 4 , the top 9 of the tooth is delimited by two cutting edges 5 and 10 joining. The sharpening of these edges makes it possible to obtain a tooth as sharp as possible so as to favor penetration into the ice. The notch 8 of a tooth is formed at the base of the cutting edge 5 facing the screwing direction (in the example of the figure 4 , the screwing direction corresponds to the anti-clockwise direction).

Claims (7)

  1. An ice screw for forming a removable belay point, said screw comprising:
    - an elongated tubular shaft (1) provided with an external thread (2);
    - a bit (3) with teeth (4), each tooth (4) having a cutting edge (5), said bit (3) being located at a longitudinal end (EI1) of said shaft (1),
    characterized in that a notch (8) is formed in said bit (3) at the base of each cutting edge (5) in order to delimit a sharpening reserve of the associated tooth.
  2. A screw according to claim 1, characterized in that it comprises an indicator (8a) for defining an end-of-life status of said bit (3).
  3. A screw according to claim 2, characterized in that the end-of-life status is configured to be reached when said cutting edge (5) of one of teeth matches the bottom (8a) of said notch (8).
  4. A screw according to one of the previous claims, characterized in that said cutting edge (5) of a tooth (4) extends from the top (9) of said tooth (4) to the associated notch (8).
  5. A screw according to claim 4, characterized in that the notch (8) associated to a tooth (4) has a concave shape starting from the base (5a) of the cutting edge (5), opposite the top of tooth (4), and ending at the base (4a) of the adjacent tooth (4) facing the cutting edge (5).
  6. A screw according to any one of the previous claims, characterized in that the teeth (4) of said bit (3) are formed in line with the shaft (1), and that each notch (8) is formed along an axis perpendicular to a longitudinal axis (A3) of the shaft (1).
  7. A screw according to claim 6, characterized in that the four teeth (4) of the bit (3) are angularly spaced about said longitudinal axis (A3) of the shaft, so that the four notches (8) are placed two by two respectively along a first axis (A1) and a second axis (A2), said characterized in that first and second axis being in the same plane and located perpendicular to each other, said plane being perpendicular to the longitudinal axis (A3) of the shaft (1).
EP12354050.2A 2011-11-29 2012-11-29 Ice screw for forming a removable mooring point comprising a sharpening recess at the base of each tooth Active EP2599528B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1103633A FR2983080B1 (en) 2011-11-29 2011-11-29 ICE PIN FOR FORMING A REMOVABLE MOORING POINT COMPRISING A SHARING RESERVE BASED ON EACH TOOTH

Publications (2)

Publication Number Publication Date
EP2599528A1 EP2599528A1 (en) 2013-06-05
EP2599528B1 true EP2599528B1 (en) 2015-01-14

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ID=47428530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12354050.2A Active EP2599528B1 (en) 2011-11-29 2012-11-29 Ice screw for forming a removable mooring point comprising a sharpening recess at the base of each tooth

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US (1) US8899897B2 (en)
EP (1) EP2599528B1 (en)
FR (1) FR2983080B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2996482B1 (en) * 2012-10-09 2014-11-28 Zedel ICE PUNCH DISPENSER
US9217288B1 (en) * 2013-08-16 2015-12-22 Albert Fiorello Power ice screw system and methods of use
US9303456B1 (en) * 2013-08-16 2016-04-05 Albert Fiorello Power ice screw system and methods of use
IT202000005743A1 (en) * 2020-03-18 2021-09-18 Camp Spa Ice screw
ES2884001B2 (en) 2020-06-04 2022-06-17 Ingecid Investig Y Desarrollo De Proyectos S L ANCHORAGE FOR ICE CLIMBING

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Publication number Priority date Publication date Assignee Title
US448126A (en) * 1891-03-10 William b
CA455936A (en) * 1949-04-12 Pinchose E. Medwed Ice drill
US3025917A (en) * 1959-06-11 1962-03-20 Arthur W Knoblauch Ice drill
US3387637A (en) * 1966-05-12 1968-06-11 Terleco Inc Tubular saw head
SU939891A1 (en) * 1977-08-30 1982-06-30 за витель / - .1 Изобретение относитс к рыболов- ству, в частности к ледобуру. исполь-i зуемому дл образовани скважин во льду водоемов, предпочтительно лунок при любительском лове рыбы. Наиболее близким к предлагаемому вл етс ледббур, содержащий режущую головку, выполненную в виде кольца с радиальны Ice drill
DE3404223A1 (en) 1984-02-07 1985-08-08 Siemens AG, 1000 Berlin und 8000 München HOUSING FOR A MAGNETIC DISK STORAGE WITH DOUBLE-SIDED DISK STACK
JPS60182077U (en) * 1984-05-16 1985-12-03 宮崎　秀夫 ice screw
US5044393A (en) * 1990-04-24 1991-09-03 Jiles Stephen L Shell cutter
US5308203A (en) * 1992-09-22 1994-05-03 Titan Technologies, Inc. Saw tipped anchor insert
US5782442A (en) * 1997-01-22 1998-07-21 Black Diamond Equipment, Ltd. Ice screw with foldable crank handle
FR2806637B1 (en) * 2000-03-23 2002-07-12 Zedel REMOVABLE MOORING DEVICE EQUIPPED WITH A DEGAINE
US6505799B1 (en) * 2002-01-04 2003-01-14 Black Diamond Equipment, Ltd. Inc. Ice screw with non-linear taper
ITMI20030291U1 (en) * 2003-06-20 2004-12-21 Aludesign Srl ICE SCREW

Also Published As

Publication number Publication date
FR2983080B1 (en) 2014-02-14
FR2983080A1 (en) 2013-05-31
EP2599528A1 (en) 2013-06-05
US8899897B2 (en) 2014-12-02
US20130136561A1 (en) 2013-05-30

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