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FR2706314A1 - Self-locking descender for mountaineering - Google Patents

Self-locking descender for mountaineering Download PDF

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Publication number
FR2706314A1
FR2706314A1 FR9307231A FR9307231A FR2706314A1 FR 2706314 A1 FR2706314 A1 FR 2706314A1 FR 9307231 A FR9307231 A FR 9307231A FR 9307231 A FR9307231 A FR 9307231A FR 2706314 A1 FR2706314 A1 FR 2706314A1
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FR
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Patent type
Prior art keywords
rope
return
locking
descender
self
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.)
Granted
Application number
FR9307231A
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French (fr)
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FR2706314B1 (en )
Inventor
Frechin Jean-Paul
Dat Christophe
Original Assignee
Frechin Jean Paul
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Filing date
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Classifications

    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B29/00Apparatus for mountaineering
    • A63B29/02Mountain guy-ropes or accessories, e.g. avalanche ropes; Means for indicating the location of accidentally buried, e.g. snow-buried, persons
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B1/00Devices for lowering persons from buildings or the like
    • A62B1/02Devices for lowering persons from buildings or the like by making use of rescue cages, bags, or the like
    • A62B1/04Single parts, e.g. fastening devices
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B1/00Devices for lowering persons from buildings or the like
    • A62B1/06Devices for lowering persons from buildings or the like by making use of rope-lowering devices

Abstract

The invention relates to a safety descender which, in cooperation with a piece (M) which traps the return rope (C), is able to perform automatic self-locking of said rope. It consists, at one end, of a conventional large ring (A) and, at the other end, of a ring (D) which has an oval hole (1) of small dimensions which receives the loops of the rope (C), a zone (2) for bearing on the piece (M) and a relief (3) arranged close to the hole (1) for rocking (M) in a descent position in return mode. The invention is intended particularly for those taking part in (rock) climbing, mountaineering and going down canyons, etc., and makes a significant contribution to their safety. <IMAGE>

Description

La présente invention concerne le domaine de l'escalade et de i'alpinisme (voire le canyonning) et plus particulièrement les descendeurs. The invention relates to the field of climbing and i'alpinisme (or canyoning) and especially downhill.

D'une façon tout à fait courante le grimpeur utilise pour l'assurance ou pour descendre le long d'une corde de rappel, généralement en double, un descendeur appelé "huit" du fait de sa forme constituée de 2 anneaux de diamètres différents reliés par une partie centrale, cette pièce métallique étant moulée ou forgée. In a manner quite common the climber uses for insurance or descend along a return rope, generally duplicate, a descender called "eight" because of its shape consisting of two rings of different diameters connected by a central portion, said metal piece being molded or forged. Ce descendeur "en huit" remplit son rôle, la corde étant freinée par son passage dans ce descendeur et maintenue en permanence par l'utilisateur à deux mains, que ce soit pour la descente en rappel ou pour l'assurance du premier de cordée. This descender "in eight" fulfills its role, the rope being held back by its passage through the chute and maintained continuously by the user with both hands, whether for abseiling or the insurance lead climber.

Toutefois ce descendeur en huit possède un inconvénient majeur pour la descente en rappel : en cas d'inattention de l'utilisateur ou de choc sur la tête (chute de pierre), celui-ci va lâcher la corde et rien ntempêchera la chute fatale. However this descender in eight has a major drawback for abseiling: if careless user or blow to the head (stone fall), it will release the string and nothing ntempêchera the fatal fall.

La présente invention concerne un descendeur qui évite cet inconvénient majeur dans la mesure où l'utilisateur pourra, en utilisant la partie nouvelle de l'invention, être bloqué automatiquement s'il lache la corde, volontairement ou non, et aura toujours la possibilité d'utiliser le descendeur normalement pour l'assurage ou la descente en rappel. The invention relates to a chute avoids this major drawback to the extent that the user can, using the new part of the invention, be blocked automatically if the rope loose, deliberately or not, and will always be the possibility of use the descender normally belay or abseiling.

Le fait d'obtenir un auto-blocage automatique est très important pour la sécurité de l'utilisateur et il évitera de nombreux accidents graves. Obtaining an automatic self-locking is very important for the safety of the user and avoid many serious accidents.

Ce résultat nouveau est obtenu par la juxtaposition d'un petit anneau possédant un ensemble de formes et de dimensions qui vont permettre indif féremment l'utilisation de cordes de rappel de diamètres 8,2 à 9mm et d' une pièce libre qui emprisonne la corde et qui comportera une section sensiblement ronde (dans la zone en contact avec l'anneau) de diamètre minimum voisin de lOmm; This new result is obtained by the juxtaposition of a small ring having a plurality of shapes and dimensions which will allow the use of indif ently luff lines diameters 8.2 to 9mm and a free part which traps the rope and which will include a substantially round cross-section (in the area in contact with the ring) neighbor minimum diameter of lOmM; l'ensemble de formes du petit anneau étant principalement constitué par - un trou rond ou ovale connu en soi, - une zone d'appui pour le maintien correct de la pièce (M), - et un relief qui va servir d'appui pour le basculement de (M) pour libérer la corde du coincement obtenu et amorcer ainsi la descente. all forms of small ring being mainly constituted by - a round or oval hole known per se, - a bearing zone for the correct holding of the part (M), - and a relief that will serve as support for the tilt (M) to release the rope of the resulting wedging and thus initiate the descent.

Ces caractéristiques nouvelles seront mieux comprises grace aux figures suivantes These new features will be better understood thanks to the following figures
- La figure 1 présente un descendeur en huit classique et la Figure 2 - Figure 1 shows a descender in eight classic and Figure 2
ce même descendeur vu de côté. the same chute in side.

- La figure 3 présente un mode de réalisation du descendeur de l'in - Figure 3 shows an embodiment of the chute in the
vention et la figure 4 une vue de côté de ce même descendeur en coupe a de la fig.3 vention and Figure 4 a side view of the same chute section has fig.3
- La figure 5 présente en coupe a, une partie du descendeur cto position de blocage de la corde. - Figure 5 shows in section a, a portion of the descender cto rope locking position.

- La figure 6 présente, en coupe b de la figure 3, une pièce (M) spéciale en position de blocage de la corde. - Figure 6 shows, in section b of Figure 3, a part (M) in special rope locking position.

- La figure 7 présente le descendeur vu de côté en position de descente. - Figure 7 shows the side view chute descent position.

Les figures 1 et 2 montrent donc un descendeur classique actuel constitué d'un grand anneau (A) et d'un petit anneau (B) et le passage de la corde (C) pour la descente non sécurisée puisque si l'utilisateur lâche la corde la chute est fatale. Figures 1 and 2 thus show a current vector chute consists of a large ring (A) and a small ring (B) and the passage of the rope (C) to the non-secure descent since if the user releases the rope fall is fatal.

Les figures 3 et 4 montrent le descendeur de l'invention dans lequel le petit anneau (D) possède un ensemble de formes caractéristiques qui vont permettre, en collaboration avec une pièce (M) non représentée ici, l'autoblocage de la corde de rappel. Figures 3 and 4 show the descender of the invention wherein the small ring (D) has a set of characteristic forms that will allow, in collaboration with a part (M) not shown here, the self-locking of the return rope . Dans cette réalisation les éléments qui permettent ce résultat sont - un trou (1) ovale dont la Petite dimension est 25mm environ et la gran In this embodiment the elements which allow this result are - a hole (1) oval whose smallest dimension is about 25 mm and the gran
de 30mm environ. about 30mm.

- une zone d'appui (2) constituée par une partie conique de chaque côté b' - a bearing zone (2) consisting of a tapered portion of each side b '
du trou (1) et dont l'angle au sommet est voisin de 700, qui va servir the hole (1) and whose angle at the apex is close to 700, which will be used
d'appui à la pièce (M) en phase de blocage de la corde (C) comme on le support to the workpiece (M) in the rope locking phase (C) as the
voit bien sur les figures 5 et 6. well seen in Figures 5 and 6.

- un relief (3) disposé à proximité du trou (1) de hauteur lOmm environ - a relief (3) disposed proximate the hole (1) of height about lOmM
et qui va sevir d'appui pour basculer la pièce (M), en position de blo and which will support sevir to switch the part (M) in the position of blo
cage, vers le descendeur pour libérer la corde (c) et amorcer la des cage toward the chute to release the cord (c) and initiate the
cente comme on le voit bien sur la figure 7. recent as well seen in Figure 7.

- une pièce (M) libre, constituée par un mousqueton classique, asymétri - a part (M) free, formed by a conventional snap hook, asymétri
que en forme générale de D, et dont la section sensiblement ronde aura as generally D-shaped, and whose substantially round section will
un diamètre voisin de lOmm. a diameter of about lOmM.

Le fonctionnement du nouveau descendeur est d'une grande simplicité : après avoir accroché le descendeur à son baudrier grace à un mousqueton de sécurité (5) passé dans l'anneau A, l'utilisateur passe sa corde(C)en double dans le trou (1) en formant 2 boucles de corde dans lesquelles il passe le mousqueton (M). The operation of the new chute is very simple: after hanging the descender to his belt thanks to a safety hook (5) passed through the ring A, the user moves its chord (C) in duplicate into the hole (1) forming two loops of rope in which it passes the carabiner (M).

Pour descendre il lui suffit de maintenir d'une main le mousqueton (M) plaqué sur le descendeur, suivant la flèche (4) comme on le voit bien en figure 7. To lower it is sufficient to hold in one hand carabiner (M) plated on the chute, the arrow (4) as seen in Figure 7 well.

En cas de problème (perte de conscience dûe à une chute de pierre par exemple), ou volontairement, l'utilisateur relâche le mousqueton M qui, sous la tension de la corde (C) bascule automatiquement autour du relief In case of problems (loss of consciousness due to for example a falling stone), and intentionally, the user releases the hook H which, under the tension of the rope (C) automatically tilts about Terrain
(3) et vient se placer sensiblement perpendiculaire au descendeur (fig 6). (3) and is placed substantially perpendicular to the chute (fig 6).

Compte tenu de l'espace restreint du trou (l)du diamètre des cordes et du diamètre du mousqueton M, on obtient alors un blocage total de la corde Given the limited space of the hole (s) the diameter of the cords and the diameter of the karabiner M, we obtain a total blockage of the rope
(C) : on a donc réalisé un descendeur auto-bloquant, ce qui apporte ainsi une contribution importante à la sécurité des grimpeurs. (C) was therefore carried out a self-locking descender, thus making an important contribution to the safety of climbers.

La figure 5 représente, en coupe a (échelle 1 environ), l'anneau D avec son relief (3) et la corde (c) en position de blocage en particulier grace au mousqueton (M). Figure 5 shows in section a (scale approximately 1), the ring D with its relief (3) and the cord (c) in the locked position in particular thanks to the carabiner (M).

La figure 6 présente, en coupe b de la figure 3, une pièce Ml, qui remlace un mousqueton, et qui pressente une forme symétrique sensiblement circulaire (7) pour s'inscrire et pénétrer dans la zone de portion de cône (2) du petit anneau (D), forme qui est plaquée en permanence contre (2) par la corde (C). Figure 6 shows, in section b of Figure 3, a workpiece Ml, which remlace a carabiner, and which foresee it a substantially circular symmetrical shape (7) to enter and penetrate the cone portion region (2) small ring (D), form which is pressed permanently against (2) by the rope (C). Bien que la pièce (mol) ne soit pas représentée en totalité, on comprend qu'elle doit avoir une ouverture pour emprisonner (C) et une forme allongée pour diminuer l'effort à exercer selon la flèche (4) lors du basculement. Although the workpiece (mole) is not shown in full, it is understood that it must have an opening to trap (C) and an elongated shape for reducing the force to be exerted along the arrow (4) during tilting.

La figure 7 présente, en vue de côté, le descendeur en phase de descente : sur cette figure on voit bien comment le relief permis à la pièce (M) poussée contre le grand anneau (A) suivant la flèche(4; de libé er la corde (C) du petit anneau (D) et de permettre ainsi son coulisse ment. Figure 7 shows, in side view, the descender descent phase: in this figure it is clear how the relief allowed the workpiece (M) thrust against the large ring (A) along the arrow (4; of libé st the chord (C) of the small ring (D) and so permitting its slide ment.

On peut noter que dans l'invention on retrouve de bons résultats déjà connus dans l'art antérieur : l'absence de vrillage de la corde et l'abscence de "peluchage" de cette dernière car toutes les zones en contact avec la corde ont un rayon voisin de 5mm, ce qui est un autre avantage du descendeur de l'invention. It may be noted that in the invention include good results already known in the prior art: the absence of twisting the rope and the abscence of "fluffing" the latter because all the areas in contact with the rope have a neighbor radius of 5mm, which is a further advantage of the chute of the invention.

On ne sortira pas du cadre de l'invention en modifiant les proportions des éléments caractéristiques, en changeant la position du relief (3) ou sa forme, ou en créant un relief symétrique de (3) pour que le descendeur soit utilisable des deux côtés, ou si la pièce (M) est rendue solidaire du descendeur par un axe d'articulation placé dans (3) par exemple. framework without departing from the invention by modifying the proportions of the characteristic elements, by changing the position of the relief (3) or its shape, or by creating a symmetric relief (3) so that the descender is used on both sides , or if the coin (M) is secured to the chute by a hinge pin placed in (3) for example.

De même on reste dans le cadre de l'invention si l'ensemble des dimensions est revu pour accepter des cordes de diamètres supérieurs à9mm ou si l'on modifie la forme (7) de la pièce (X4). Similarly we remain within the scope of the invention if all dimensions is reviewed to accept strings with diameters à9mm or if one changes the shape (7) of the part (X4).

Le descendeur de l'invention participe donc de façon importante à la sécurité des grimpeurs et alpinistes. The chute of the invention therefore contributes significantly to the safety of climbers and mountaineers.

Claims (6)

    REVENDICATIONS
  1. 1) Descendeur de forme dite "en huit" pour la pratique de l'alpinisme, de l'escalade et du canyonning constitué de 2 anneaux reliés par une partie centrale longitudinale, utilisable pour la descente en rappel ou pour l'assurage, et caractérisé en ce que le plus petit des 2 anneaux (D) présente un ensemble de formes constituées d'une zone d'appui (2) et d'un relief (3) disposé à proximité du trou (1), cet ensemble de formes per-- mettant, en coopération avec une pièce (M) qui emprisonne la corde(C), l'auto-bloquage automatique de la corde (C) dans (D) et le déblocage volontaire par basculement de (M) sur le relief (3). 1) Chute form called "eight" to practice mountain climbing, rock climbing and canyonning consisting of two rings connected by a longitudinal central portion, operable to abseiling or belaying, and characterized in that the smaller of the two rings (D) has a set of shapes consisting of a bearing zone (2) and a relief (3) disposed proximate the hole (1), this set of forms per - making, in cooperation with a part (M) that traps the rope (C), the automatic self-blocking cord (C) in (D) and the voluntary unlocking by pivoting (M) of the relief ( 3).
  2. 2) Descendeur " en huit " selon la revendication 1, caractérisé en ce que la pièce (M) est un mousqueton classique asymétrique de section sensiblement ronde. 2) descender "eight" according to claim 1, characterized in that the part (M) is a conventional asymmetric carabiner substantially round section.
  3. 3) Descendeur. 3) descender. "en huit" selon la revendication 1 caractérisé en ce que la pièce (M1) possède une forme (7) sensiblement symétrique. "Eight" according to claim 1 characterized in that the part (M1) has a shape (7) substantially symmetrically.
  4. 4) Descendeur "en huit" seon la revendication 1, caractérisé en ce que la zone d'appui (2) latérale est une section de cône d'angle au sommet Oc voisin de 700. 4) descender "eight" seon to claim 1, characterized in that the bearing region (2) side is a cone angle of section at the top neighbor Oc 700.
  5. 5) Descendeur "en huit" selon la revendication 1 caractérisé en ce que le relief (3) présente une hauteur voisine de lOmm. 5) descender "eight" according to claim 1 characterized in that the relief (3) has a height of about lOmM.
  6. 6) Descendeur "enhuit" selon la revendication 1, caractérisé en ce que le trou ovale possède des dimensions comprises entre 25 et 30mm environ. 6) descender "enhuit" according to claim 1, characterized in that the oval hole has dimensions of between about 25 and 30mm.
FR9307231A 1993-06-14 1993-06-14 Self-locking abseil device for mountaineering. Expired - Fee Related FR2706314B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9307231A FR2706314B1 (en) 1993-06-14 1993-06-14 Self-locking abseil device for mountaineering.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9307231A FR2706314B1 (en) 1993-06-14 1993-06-14 Self-locking abseil device for mountaineering.

Publications (2)

Publication Number Publication Date
FR2706314A1 true true FR2706314A1 (en) 1994-12-23
FR2706314B1 FR2706314B1 (en) 1995-09-01

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Family Applications (1)

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FR9307231A Expired - Fee Related FR2706314B1 (en) 1993-06-14 1993-06-14 Self-locking abseil device for mountaineering.

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FR (1) FR2706314B1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0734743A1 (en) * 1995-03-27 1996-10-02 Zedel Energy absorbing device associated with a safety line
DE10027559A1 (en) * 2000-06-02 2001-12-13 Thomas Reinhardt Brake for climbing ropes of synthetic fibers has a housing with passage openings for the rope loops and a moving bar to act on them in a self-clamping and secure action
FR2832068A1 (en) * 2001-11-14 2003-05-16 Contat Freres Ets Method for obtaining mountaineering figure eight descender consists of deforming metal section portion to give it its final figure of eight shape
US6607058B2 (en) 2000-06-02 2003-08-19 Tre-Erwin Angerbauer-Roland Bross-Thomas Reinhardt Gesellschaft Burgerlichen Rechts Rope brake
FR2836635A1 (en) * 2002-03-01 2003-09-05 Jean Paul Frechin Cord brake for mountaineering and climbing has block with rectangular cut out having internal braking faces
FR2889814A1 (en) * 2005-08-18 2007-02-23 Argenton Pierre Mountain climbing assistance device for rappelling, has snap hook blocking descent of user when user does not exert force on hook, and opening whose edges include projections for supporting hook when user exerts force to control descent
WO2014086067A1 (en) * 2012-12-05 2014-06-12 He Shaodun Hanger rope winding method and hanger using same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564736A1 (en) * 1984-05-25 1985-11-29 Petzl Fernand Descender (abseil device) on a single or double rope for mountaineering or speleology
US4678059A (en) * 1986-05-27 1987-07-07 Bowker Thomas K Rope descending device
FR2631325A1 (en) * 1988-05-16 1989-11-17 Rossignol Pascal Manual device for braking and blocking on a rope (descender), allowing the controlled descent of an individual or of a load with the aid of a single or double rope

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564736A1 (en) * 1984-05-25 1985-11-29 Petzl Fernand Descender (abseil device) on a single or double rope for mountaineering or speleology
US4678059A (en) * 1986-05-27 1987-07-07 Bowker Thomas K Rope descending device
FR2631325A1 (en) * 1988-05-16 1989-11-17 Rossignol Pascal Manual device for braking and blocking on a rope (descender), allowing the controlled descent of an individual or of a load with the aid of a single or double rope

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0734743A1 (en) * 1995-03-27 1996-10-02 Zedel Energy absorbing device associated with a safety line
FR2732226A1 (en) * 1995-03-27 1996-10-04 Zedel Energy absorbing device associated to an insurance runs
US5947229A (en) * 1995-03-27 1999-09-07 Zedel Energy absorbing device for use with a safety lanyard and system including the device
DE10027559A1 (en) * 2000-06-02 2001-12-13 Thomas Reinhardt Brake for climbing ropes of synthetic fibers has a housing with passage openings for the rope loops and a moving bar to act on them in a self-clamping and secure action
US6607058B2 (en) 2000-06-02 2003-08-19 Tre-Erwin Angerbauer-Roland Bross-Thomas Reinhardt Gesellschaft Burgerlichen Rechts Rope brake
FR2832068A1 (en) * 2001-11-14 2003-05-16 Contat Freres Ets Method for obtaining mountaineering figure eight descender consists of deforming metal section portion to give it its final figure of eight shape
EP1312391A1 (en) * 2001-11-14 2003-05-21 Etablissements Contat Freres Method for obtaining an "eight descender" for mountaineering and an "eight descender" obtained thereby
FR2836635A1 (en) * 2002-03-01 2003-09-05 Jean Paul Frechin Cord brake for mountaineering and climbing has block with rectangular cut out having internal braking faces
FR2889814A1 (en) * 2005-08-18 2007-02-23 Argenton Pierre Mountain climbing assistance device for rappelling, has snap hook blocking descent of user when user does not exert force on hook, and opening whose edges include projections for supporting hook when user exerts force to control descent
WO2014086067A1 (en) * 2012-12-05 2014-06-12 He Shaodun Hanger rope winding method and hanger using same

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