ES2382243B1

ES2382243B1 - IMPROVED SELF-BRAKING LIFT

Info

Publication number: ES2382243B1
Application number: ES201230462A
Authority: ES
Inventors: Pablo Luis De Miguel Valiente
Original assignee: Pablo Luis De Miguel Valiente
Current assignee: PROTECTTION PROTECCION TECNICA, S.L.
Priority date: 2012-03-28
Filing date: 2012-03-28
Publication date: 2012-12-17
Anticipated expiration: 2032-03-28
Also published as: ES2382243A1

Abstract

Descensor autofrenante mejorado formado por un cuerpo (1), una palanca (12) y una cabeza (17), estando el cuerpo (1) formado por dos piezas laterales (2) iguales y simétricas, una leva (9) con dos orificios (10 y 11) y una pieza cilíndrica (8), llevando cada pieza lateral (2) un orificio anterior (5), un orificio posterior (7), así como un rebaje (4) en la parte interior, un orificio inferior (6) y un reborde saliente (3) en la parte delantera y superior, estando colocadas la leva (9) y la pieza cilíndrica (8) entre ambas piezas laterales (2), estando la palanca (12) formada por dos laterales salientes (15), un apéndice (13) unido solidariamente en un lateral y un orificio de rozamiento (14), y estando formada la cabeza (17) por un extremo preferentemente semicircular y dos extremos salientes (19), y entre ellos una leva posterior (18) de posición centrada y fija.Improved self-braking lowering formed by a body (1), a lever (12) and a head (17), the body (1) being formed by two equal and symmetrical side pieces (2), a cam (9) with two holes ( 10 and 11) and a cylindrical piece (8), each side piece (2) carrying a front hole (5), a rear hole (7), as well as a recess (4) on the inside, a bottom hole (6 ) and a projecting flange (3) in the front and upper part, the cam (9) and the cylindrical part (8) being placed between both side pieces (2), the lever (12) being formed by two protruding sides (15 ), an appendage (13) jointly joined in one side and a friction hole (14), and the head (17) being formed by a preferably semicircular end and two protruding ends (19), and between them a rear cam (18 ) centered and fixed position.

Description

Descensor autofrenante mejorado. Enhanced self-braking lowering.

Object of the invention.

La presente invención se refiere a un descensor autofrenante mejorado con función antipánico. The present invention relates to an improved self-braking descender with panic function.

Background of the invention.

Son conocidas las actividades en las que se utilizan cuerdas para descender por paredes verticales, ya sean deportivas como escalada y espeleología, o aplicadas a la industria para trabajos en altura o rescates. Para los descensos con cuerda, Activities are known in which ropes are used to descend vertical walls, whether sports such as climbing and caving, or applied to the industry for work at height or rescue. For the descents with rope,

o descenso en rapel, se utilizan unos elementos adosados a las cuerdas, conocidos como descensores. El invento que se presenta está basado en la patente nº 201130800 del mismo inventor. or rappelling, elements attached to the ropes, known as descenders, are used. The invention presented is based on patent No. 201130800 of the same inventor.

Description of the invention

El invento que se presenta a continuación se refiere a un descensor autofrenante con función antipánico, que se utiliza para realizar la operación de descenso por una pared vertical y que mejora el funcionamiento del descensor en el que se basa. The invention presented below refers to a self-braking descender with panic function, which is used to perform the descent operation by a vertical wall and that improves the operation of the descender on which it is based.

El invento se divide en tres partes principales, el cuerpo, la palanca y la cabeza. The invention is divided into three main parts, the body, the lever and the head.

El cuerpo está formado por dos piezas laterales iguales y simétricas, una leva y una pieza cilíndrica. The body is formed by two equal and symmetrical side pieces, a cam and a cylindrical piece.

Unida al cuerpo en un extremo hay un saliente o palanca de accionamiento que posee un orificio por el que también pasa la cuerda y puede plegarse al cuerpo mediante un eje. Attached to the body at one end is a projection or operating lever that has a hole through which the rope also passes and can be folded to the body by means of an axis.

En el otro extremo del cuerpo hay una cabeza con una leva que lleva un dentado para incrementar el rozamiento en posición antipánico. At the other end of the body there is a head with a cam that carries a teeth to increase friction in a panic position.

El material con el que está construido es preferentemente aluminio y los ejes de unión son preferentemente de acero. El invento se monta uniendo primeramente las piezas que forman el cuerpo. Después se une la palanca al cuerpo mediante un eje, colocando a continuación la cabeza, sujeta al cuerpo mediante otro eje. Toda la pieza lleva un rebaje de material en todos los bordes para evitar posibles filos. The material with which it is constructed is preferably aluminum and the joint shafts are preferably made of steel. The invention is assembled by first joining the parts that form the body. The lever is then attached to the body by means of an axis, then placing the head, attached to the body by another axis. The whole piece has a recess of material at all edges to avoid possible edges.

Las características, funcionamiento y ventajas de la invención se podrán ver más claramente a partir de la descripción detallada que sigue de una forma preferida de realización, dada únicamente a título de ejemplo ilustrativo y no limitativo, con referencia a las figuras que se acompañan. The characteristics, operation and advantages of the invention can be seen more clearly from the following detailed description of a preferred embodiment, given only by way of illustrative and non-limiting example, with reference to the accompanying figures.

Brief description of the drawings.

La figura 1 muestra una perspectiva de la parte interior de un lateral simétrico del cuerpo. La figura 2 muestra una perspectiva de la pieza cilíndrica. La figura 3 muestra una perspectiva de la parte exterior de un lateral simétrico del cuerpo. La figura 4 muestra una perspectiva de la leva del cuerpo. La figura 5 muestra una vista lateral de la leva del cuerpo. La figura 6 muestra una perspectiva de la palanca. La figura 7 muestra una vista lateral en corte de la palanca. La figura 8 muestra una perspectiva de la cabeza. La figura 9 muestra una vista lateral en corte de la cabeza. La figura 10 muestra una vista lateral del descensor con la palanca plegada. La figura 11 muestra una vista lateral del descensor con la palanca desplegada. La figura 12 muestra el paso de la cuerda por el descensor. Figure 1 shows a perspective of the inside of a symmetrical side of the body. Figure 2 shows a perspective of the cylindrical piece. Figure 3 shows a perspective of the outside of a symmetrical side of the body. Figure 4 shows a perspective of the body cam. Figure 5 shows a side view of the body cam. Figure 6 shows a perspective of the lever. Figure 7 shows a side view in section of the lever. Figure 8 shows a perspective of the head. Figure 9 shows a sectional side view of the head. Figure 10 shows a side view of the descender with the lever folded. Figure 11 shows a side view of the descender with the lever deployed. Figure 12 shows the passage of the rope through the descender.

ES 2 382 243 Al ES 2 382 243 Al

Description of a first preferential embodiment.

La descripción detallada de una primera realización preferencial de la invención va a ser llevada a cabo en lo que sigue con la ayuda de los dibujos anexos, a través de los cuales se utilizan las mismas referencias numéricas para designar las partes iguales o semejantes y tiene en cuenta la explicación expuesta del invento. The detailed description of a first preferred embodiment of the invention will be carried out in the following with the help of the attached drawings, through which the same numerical references are used to designate the same or similar parts and have in Account the explanation explained of the invention.

El descensor se divide en tres partes principales, el cuerpo (1) cuyo despiece se muestra en las figuras 1 a 5, la palanca (12) que se muestra en las figuras 6 y 7 y la cabeza (17) que se muestra en las figuras 8 y 9. The descender is divided into three main parts, the body (1) whose exploded view is shown in figures 1 to 5, the lever (12) shown in figures 6 and 7 and the head (17) shown in the Figures 8 and 9.

El cuerpo (1) está formado por dos piezas laterales (2) iguales y simétricas, una leva (9) y una pieza cilíndrica (8). Cada pieza lateral (2) lleva un orificio anterior (5) para la unión de la leva (9) y un orificio posterior (7) para la unión de la cabeza (17), así como un rebaje (4) en la parte interior donde irá alojado un extremo de la pieza cilíndrica (8), un orificio inferior (6) que servirá también de sujeción a la leva (9) y un reborde saliente (3) en la parte delantera y superior. La leva (9) se coloca en contacto con la parte interior de la pieza lateral (2), haciendo coincidir el orificio anterior (5) con el orificio (10) de la leva (9) y el orificio inferior (6) con el orificio (11) de la leva (9). Cada extremo de la pieza cilíndrica (8) se coloca en el rebaje (4) de cada pieza lateral (2). Las piezas laterales (2) son simétricas y se colocan enfrentadas con el reborde saliente (3) hacia el interior. Entre ambas piezas laterales (2) van colocadas la leva (9) y la pieza cilíndrica (8). Un eje atraviesa los orificios inferiores (6) y el orificio (11) de la leva y se sujeta preferentemente mediante remaches. Esta sujeción evita que la leva gire con el movimiento. Entre las piezas laterales (2) queda un canal con el suficiente espacio para el paso de una cuerda (23), cuyo recorrido se verá en la figura 12. The body (1) is formed by two equal and symmetrical side pieces (2), a cam (9) and a cylindrical part (8). Each side piece (2) has a front hole (5) for joining the cam (9) and a rear hole (7) for joining the head (17), as well as a recess (4) on the inside where one end of the cylindrical part (8), a lower hole (6) that will also serve as a fastener to the cam (9) and a projecting flange (3) in the front and upper part will be housed. The cam (9) is placed in contact with the inner part of the side piece (2), matching the anterior hole (5) with the hole (10) of the cam (9) and the lower hole (6) with the hole (11) of the cam (9). Each end of the cylindrical piece (8) is placed in the recess (4) of each side piece (2). The side pieces (2) are symmetrical and are placed facing each other with the projecting flange (3) inwards. Between both side pieces (2) the cam (9) and the cylindrical part (8) are placed. A shaft passes through the lower holes (6) and the hole (11) of the cam and is preferably held by rivets. This clamp prevents the cam from rotating with the movement. Between the side pieces (2) there is a channel with enough space for the passage of a rope (23), whose route will be seen in Figure 12.

La palanca (12), que se sitúa delante del cuerpo (1), está formada por dos laterales salientes (15) cuya separación interior es similar a la anchura del cuerpo (1) y lleva un apéndice (13) unido solidariamente en un lateral. Cada lateral saliente (15) es perpendicular al apéndice (13) e inclinado hacia atrás y lleva un orificio (16). En la superficie se encuentra el orificio de rozamiento (14) centrado y preferentemente en forma de lágrima, para variar el rozamiento de la cuerda (23). La palanca (12) se une al cuerpo superponiendo los orificios (16) de la palanca con los orificios anteriores (5) y mediante un eje se atraviesan los orificios anteriores (5), el orificio (10) de la leva y los orificios (16) de la palanca (12), sujetándose dicho eje mediante remaches. Entre cada remache y la palanca hay un casquillo separador para disminuir el rozamiento, preferentemente de acero. The lever (12), which is placed in front of the body (1), is formed by two protruding sides (15) whose internal separation is similar to the width of the body (1) and has an appendage (13) joined together on one side . Each protruding side (15) is perpendicular to the appendix (13) and tilted back and has a hole (16). On the surface is the friction hole (14) centered and preferably in the form of a tear, to vary the friction of the rope (23). The lever (12) joins the body by superimposing the holes (16) of the lever with the previous holes (5) and through an axis the previous holes (5), the hole (10) of the cam and the holes ( 16) of the lever (12), said shaft being held by rivets. Between each rivet and the lever there is a spacer bushing to reduce friction, preferably of steel.

La cabeza (17) está formada por una pieza con un extremo preferentemente semicircular llevando en el otro extremo dos salientes (19), también preferentemente semicirculares, atravesados cada uno de ellos por un orificio conectador (21), llevando el extremo preferentemente semicircular un aro de conector (20) por el cual se introduce un mosquetón que irá enganchado al arnés que lleve puesto el usuario del invento. Entre los dos salientes (19) hay una leva posterior (18) de posición centrada y fija, con un dentado (22) en su parte inferior. La separación interior entre los dos salientes (19) es similar a la anchura del cuerpo (1). La cabeza (17) se une al cuerpo (1) superponiendo los orificios conectadores (21) a los orificios posteriores (7). The head (17) is formed by a piece with a preferably semicircular end carrying at the other end two projections (19), also preferably semicircular, each of them traversed by a connecting hole (21), the semi-circular end preferably carrying a ring of connector (20) by which a carabiner is inserted that will be attached to the harness worn by the user of the invention. Between the two projections (19) there is a rear cam (18) with a centered and fixed position, with a gear (22) in its lower part. The internal separation between the two projections (19) is similar to the width of the body (1). The head (17) joins the body (1) superimposing the connecting holes (21) to the rear holes (7).

La figura 10 muestra una vista lateral del descensor con la palanca (12) plegada sobre el cuerpo (1). La cabeza (17) puede girar libremente hacia abajo. Figure 10 shows a side view of the descender with the lever (12) folded over the body (1). The head (17) can rotate freely downwards.

La figura 11 muestra una vista lateral del descensor con la palanca (12) desplegada del cuerpo (1). La cabeza (17) puede girar libremente hacia arriba y hacia abajo. Figure 11 shows a side view of the descender with the lever (12) deployed from the body (1). The head (17) can rotate freely up and down.

En la figura 12 puede verse el paso de la cuerda (23) por el descensor. La cuerda (23) entra por la parte superior del cuerpo (1), entre las piezas laterales (2), pasa entre la leva posterior (18) y la pieza cilíndrica (8), rodea la pieza cilíndrica (8) por su parte inferior, asciende entre la pieza cilíndrica (8) y la leva (9), rodea la leva (9) por su parte superior y se introduce por la parte superior del orificio de rozamiento (14). La posición lateral del apéndice (13) evita el trabado de la cuerda (23) por éste. La pieza cilíndrica (8) lleva una cierta holgura de desplazamiento en su colocación dentro del rebaje (4) para variar la presión que se hace sobre la cuerda (23). Figure 12 shows the passage of the rope (23) through the descender. The rope (23) enters the upper part of the body (1), between the side pieces (2), passes between the rear cam (18) and the cylindrical part (8), surrounds the cylindrical part (8) on its part lower, ascends between the cylindrical part (8) and the cam (9), surrounds the cam (9) by its upper part and is introduced by the upper part of the friction hole (14). The lateral position of the appendix (13) prevents the rope from locking (23) by it. The cylindrical part (8) has a certain displacement slack in its placement inside the recess (4) to vary the pressure that is made on the rope (23).

Debe entenderse que la invención ha sido descrita según realizaciones preferenciales de la misma, por lo que puede ser susceptible de modificaciones siempre y cuando ello no suponga alteración alguna del fundamento de dicha invención, pudiendo afectar tales modificaciones a la forma, tamaño o materiales de fabricación. It should be understood that the invention has been described according to preferred embodiments thereof, so it may be subject to modifications as long as this does not imply any alteration of the basis of said invention, such modifications may affect the shape, size or manufacturing materials. .

ES 2 382 243 Al ES 2 382 243 Al

Claims

1.-Improved self-braking descender, characterized in that the body (1) is formed by two equal and symmetrical side pieces (2), a cam (9) with two holes (10 and 11) and a cylindrical part (8), carrying each side piece (2) a 5 front hole (5), a rear hole (7), as well as a recess (4) on the inside, a bottom hole (6) and an overhang (3) on the front and upper, the cam (9) and the cylindrical part (8) being placed between both side pieces (2), such that the anterior hole (5) coincides with the hole (10) of the cam (9), and the lower hole (6) coincides with the hole (11) of the cam (9), one end of the cylindrical part (8) being placed in each recess (4), the lower holes (6) and the hole pierced by an axis (11) of the cam and subject preferably by rivets, and the

10 lever (12) formed by two protruding sides (15), an appendage (13) jointly joined on one side and a friction hole (14) centered and preferably tear-shaped, and carrying the head (17) between the two projections (19) a rear cam (18) of centered and fixed position.

2.-Improved self-braking descender, according to claim one, characterized in that the rope (23) enters through the

15 upper part of the body (1), between the side pieces (2), passes between the rear cam (18) and the cylindrical part (8), surrounds the cylindrical part (8) by its lower part, ascends between the cylindrical part (8) and the cam (9), surrounds the cam (9) by its upper part and is introduced by the upper part of the friction hole (14).

ES 2 382 243 Al

FIGURE 1 7 FIGURE 2

ES 2 382 243 Al

FIGURE 8

18 FIGURE 12

SPANISH OFFICE OF THE PATENTS AND BRAND

Application no .: 201230462

SPAIN

Date of submission of the application: 28.03.2012

Priority Date:

REPORT ON THE STATE OF THE TECHNIQUE

51 Int. Cl.: See Additional Sheet

RELEVANT DOCUMENTS

Categoría Category: 56 Documentos citados Reivindicaciones afectadas 56 Documents cited Claims Affected

A TO: ES 2096897 T3 (ZEDEL) 16/03/1997, descripción; figuras. 1-2 ES 2096897 T3 (ZEDEL) 03/16/1997, description; figures. 1-2

A TO: GB 2367048 A (NAT ACCESS AND RESCUE CT ET AL.) 27/03/2002, descripción; figuras. 1-2 GB 2367048 A (NAT ACCESS AND RESCUE CT ET AL.) 03/27/2002, description; figures. 1-2

A TO: EP 0303388 A1 (ROGELJA BORIS) 15/02/1989, descripción; figuras. 1-2 EP 0303388 A1 (ROGELJA BORIS) 02/15/1989, description; figures. 1-2

A TO: ES 2164893 T3 (LORBEK JOZE) 01/03/2002, descripción; figuras. 1-2 ES 2164893 T3 (LORBEK JOZE) 03/01/2002, description; figures. 1-2

A TO: US 5850893 A (HEDE JEAN MARC ET AL.) 22/12/1998, descripción; figuras. 1-2 US 5850893 A (HEDE JEAN MARC ET AL.) 12/22/1998, description; figures. 1-2

A TO: US 5597052 A (ROGLEJA BORIS) 28/01/1997, descripción; figuras. 1-2 US 5597052 A (ROGLEJA BORIS) 01/28/1997, description; figures. 1-2

A TO: US 4019609 A (WAGNER KELLY B) 26/04/1977, descripción; figuras. 1-2 US 4019609 A (WAGNER KELLY B) 04/26/1977, description; figures. 1-2

A TO: WO 2010132012 A1 (INITIUM SYSTEM AKTIEBOLAG ET AL.) 18/11/2010, descripción; figuras. 1-2 WO 2010132012 A1 (INITIUM SYSTEM AKTIEBOLAG ET AL.) 11/18/2010, description; figures. 1-2

A TO: EP 1123718 A1 (BASECAMP INNOVATIONS LTD) 16/08/2001, descripción; figuras. 1-2 EP 1123718 A1 (BASECAMP INNOVATIONS LTD) 08/16/2001, description; figures. 1-2

Categoría de los documentos citados X: de particular relevancia Y: de particular relevancia combinado con otro/s de la misma categoría A: refleja el estado de la técnica O: referido a divulgación no escrita P: publicado entre la fecha de prioridad y la de presentación de la solicitud E: documento anterior, pero publicado después de la fecha de presentación de la solicitud Category of the documents cited X: of particular relevance Y: of particular relevance combined with other / s of the same category A: reflects the state of the art O: refers to unwritten disclosure P: published between the priority date and the date of priority submission of the application E: previous document, but published after the date of submission of the application

El presente informe ha sido realizado • para todas las reivindicaciones • para las reivindicaciones nº: This report has been prepared • for all claims • for claims no:

Fecha de realización del informe 23.05.2012 Date of realization of the report 23.05.2012: Examinador I. Rodríguez Goñi Página 1/5 Examiner I. Rodríguez Goñi Page 1/5

REPORT OF THE STATE OF THE TECHNIQUE

CLASSIFICATION OBJECT OF THE APPLICATION A63B29 / 00 (2006.01)

A63B29 / 02 (2006.01) A62B1 / 14 (2006.01) Minimum documentation sought (classification system followed by classification symbols)

A63B, A62B

Electronic databases consulted during the search (name of the database and, if possible, terms of search used) INVENTIONS, EPODOC, WPI

WRITTEN OPINION

Date of Written Opinion: 23.05.2012

Statement

Novedad (Art. 6.1 LP 11/1986) Novelty (Art. 6.1 LP 11/1986): Reivindicaciones Reivindicaciones 1-2 SI NO Claims Claims 1-2 IF NOT

Actividad inventiva (Art. 8.1 LP11/1986) Inventive activity (Art. 8.1 LP11 / 1986): Reivindicaciones Reivindicaciones 1-2 SI NO Claims Claims 1-2 IF NOT

The application is considered to comply with the industrial application requirement. This requirement was evaluated during the formal and technical examination phase of the application (Article 31.2 Law 11/1986).

Opinion Base.-

This opinion has been made on the basis of the patent application as published.

WRITTEN OPINION

1. Documents considered.-

The documents belonging to the state of the art taken into consideration for the realization of this opinion are listed below.

Documento Document: Número Publicación o Identificación Fecha Publicación Publication or Identification Number publication date

D01 D01: ES 2096897 T3 (ZEDEL) 16.03.1997 ES 2096897 T3 (ZEDEL) 16.03.1997

D02 D02: GB 2367048 A (NAT ACCESS AND RESCUE CT et al.) 27.03.2002 GB 2367048 A (NAT ACCESS AND RESCUE CT et al.) 03/27/2002

2. Statement motivated according to articles 29.6 and 29.7 of the Regulations for the execution of Law 11/1986, of March 20, on Patents on novelty and inventive activity; quotes and explanations in support of this statement

The object of the invention is an improvement to the self-braking descender with panic function corresponding to the Spanish patent application P201130800. The descender corresponding to said request consisted of:

--: Un cuerpo; de sección preferentemente rectangular, dividido en dos partes iguales unidas por un extremo, formando un canal por el que pasa la cuerda en doble sentido -Una palanca de accionamiento; unida al cuerpo por uno de sus extremos de manera que pueda plegarse al cuerpo mediante un eje, y que posee un orificio “de rozamiento” por el que también pasa la cuerda. Inclinando la palanca hacia la horizontal con respecto al suelo se consigue un descenso más rápido, mientras que cuando está en posición vertical, se produce lo que se denomina “fución antifrenado” y se alcanza la posición de reposo. -Una cabeza con una leva, situada en el otro extremo del cuerpo y unida a él mediante un eje que permite el basculamiento de dicha cabeza. La leva lleva un dentado para incrementar el rozamiento sobre la cuerda, de manera que cuando la cabeza bascula, la leva dentada puede llegar a “morder” la cuerda y de esta forma producir el frenado, disponiéndose así de la “función antipánico”. La cabeza dispone así mismo de un orificio denominado “aro de conector” por el que se introduce el mosquetón que irá enganchado al arnés del usuario -Un anillo que encaja en el cuerpo, de tal manera que puede tener una cierta movilidad, con un recorrido a lo largo del cuerpo, limitado por la cabeza y la palanca A body; of preferably rectangular section, divided into two equal parts joined by one end, forming a channel through which the rope passes in two directions -A drive lever; joined to the body by one of its ends so that it can be folded to the body by means of an axis, and which has a "friction" hole through which the rope also passes. By tilting the lever horizontally with respect to the ground a faster descent is achieved, while when it is in an upright position, what is called "anti-braking function" occurs and the rest position is reached. -A head with a cam, located at the other end of the body and attached to it by an axis that allows the tilting of said head. The cam has a gear to increase friction on the rope, so that when the head tilts, the toothed cam can “bite” the rope and thus cause braking, thus providing the “panic function”. The head also has a hole called "connector ring" through which the carabiner is inserted that will be attached to the user's harness - a ring that fits into the body, so that it can have a certain mobility, with a path along the body, limited by the head and lever

The proposed improved descender also includes a body, a drive lever and a head with a cam, but has the following differences:

--: el cuerpo, si bien también presenta dos partes iguales, ahora, entre ambas piezas, que son laterales, iguales y simétricas, se dispone de una leva, con dos orificios, y de una pieza cilíndrica, y ya no se dispone de la unión en el extremo formando un canal -la palanca de accionamiento, si bien sigue estando unida al cuerpo por uno de sus extremos y puede plegarse al mismo, y también posee un orificio de rozamiento por el que pasa la cuerda, ahora, el apéndice de la palanca está unido solidariamente en uno de los laterales salientes, mientras el orificio de rozamiento, que sigue estando centrado, tiene preferentemente forma de lágrima -la cabeza con una leva, también está situada en el otro extremo del cuerpo y solamente presenta pequeñas diferencias formales -no se dispone ahora del anillo dotado de cierta movilidad a lo largo del cuerpo, y al que rodea la cuerda, sino que ahora de dispone del conjunto de leva y pieza cilíndrica Las diferencias observadas suponen una alternativa constructiva al descensor de la solicitud principal y así mismo se aprecian nuevas posibilidades de maniobra para el conjunto de palanca y leva dentada. The body, although it also has two equal parts, now, between both pieces, which are lateral, equal and symmetrical, there is a cam, with two holes, and a cylindrical piece, and the joint is no longer available. the end forming a channel - the operating lever, although it is still attached to the body by one of its ends and can be folded to it, and also has a friction hole through which the rope passes, now, the lever appendix it is joined in solidarity on one of the protruding sides, while the friction hole, which remains centered, preferably has a tear-shaped shape - the head with a cam, is also located at the other end of the body and only has small formal differences - no the ring is now provided with some mobility along the body, and around the rope, but now has the cam and cylindrical part set The observed differences represent an alternation constructive activity to the descender of the main application and also new possibilities of maneuver for the lever and toothed cam assembly are appreciated.

The technical object for claim 1 is an improved self-braking descender consisting of: a body, in turn, formed by:

- two equal and symmetrical side pieces, carrying each side piece: -a previous hole -a rear hole -a recess on the inside -a bottom hole -a protruding flange on the front and top

-a cam with two holes -a cylindrical piece -the cam and the cylindrical piece are placed between both side pieces, so that:

- -: el orificio anterior coincide con un orificio de la leva, y el orificio inferior coincide con el otro orificio de la leva -en cada rebaje está colocado un extremo de la pieza cilíndrica -los orificios inferiores y el correspondiente orificio de la leva están atravesados por un eje y sujetos preferentemente the anterior hole coincides with a hole of the cam, and the lower hole coincides with the other hole of the cam -in each recess an end of the cylindrical piece is placed -the lower holes and the corresponding hole of the cam are crossed by a axis and subjects preferably

by rivets

WRITTEN OPINION

--: una palanca formada por: a lever formed by:

--: dos laterales salientes two protruding sides

--: un apéndice unido solidariamente en un lateral an appendage joined jointly on one side

--: un orificio de rozamiento centrado y preferentemente en forma de lágrima -una cabeza formada por dos salientes y entre dichos dos salientes una leva posterior de posición centrada y fija a centered and preferably tear-shaped friction hole - a head formed by two projections and between said two projections a rear cam centered and fixed position

No document with the claimed characteristics is known in the state of the art, and although there are known devices in which in addition to a first type of braking element there is another security (complementary)

or independent) the claimed descender is not deducted from said devices.

In the state of the art, documents such as D01 are known which disclose a descender which has on one side an actuating handle for locking and unlocking the rope, as well as an auxiliary lever with a clamping surface; but it is a pulley type descender and although the auxiliary lever is reminiscent of the toothed cam of claim 1, its rationale is that it acts when the direction of passage of the rope is incorrect, due to an assembly error. D01 is therefore quite far from the body, lever and head configuration of claim 1.

Document D02 is also known, which although it has a secondary brake mechanism that acts in addition to the primary brake mechanism, has a pulley type configuration and far removed from the body, lever and head scheme and claimed.

For all the foregoing, the claimed descender is not evident from the state of the art for the person skilled in the art and therefore it is considered that claim 1 is new (Art. 6.1 LP 11/1986) and implies inventive activity (Art. 8.1 LP 11/1986).

Claim 2 is dependent, so it is also considered to be new (Art. 6.1 LP 11/1986) and implies inventive activity (Art. 8.1 LP 11/1986).