FR2911653A1 - Load raising or descending device for use by e.g. arboculturist, has large strap on which two rings of different diameters are found at each end, where strap includes width offering sufficient friction surface - Google Patents

Abstract

The device has a large strap (1) on which two rings (2) of different diameters are found at each end, where the ring of smaller diameter passes inside the ring of larger diameter. The strap has a width offering a sufficient friction surface. Assemblies (4) are made at regular intervals for fixing a narrow strap (5) on the assemblies such that buckles (6) are formed between points of assemblies.

Description

Description 1/2

  The present invention relates to a device that allows the lifting or lowering of a load without mechanical means, along a vertical structure having no inking point to offer. This work situation, specific to arborist-climbers, remains complicated to manage when one of these is no longer able to go down on his own. There is currently no product on the market that allows to intervene safely and without gear in such a situation. The device according to the invention makes it possible very quickly to create several inking points that are safe for its user or users in a single operation.

  It comprises indeed according to a first characteristic, a strap. At each end is a ring of different size. The larger of the two must allow the passage of the other. Thus, the strap goes around the structure and passes inside the big ring. The structure is strangled by a tie system. The width of the band prevents it from sliding along the structure when the mass of the operator and the load is suspended there. According to a second characteristic on said strap is fixed, discontinuously, on its middle and along its length a second strap of a smaller width and which forms, in a regular manner, loops which allow to fix connectors . The multitude of inking points offered by these many loops allows the operator to install a system of hauling thanks to the ropes, carabiners and pulleys which he is already equipped for his usual work. The accompanying drawings illustrate the invention: Figure 1 and its detail show the wide strap and a method of assembly of said strap with the rings at its ends.

  Figure 2 shows the same strap with the loops formed by the other small strap assembled on its middle and over its entire length. Figure 3 shows the same strap when it is placed around a vertical structure. With reference to these drawings, the device comprises a wide strap (1) on which are at each end, two rings (2) of different diameters. Thus, the smaller of the two rings must be able to pass inside the larger one. Other assemblies (4) are also made at regular intervals to fix a second strap (5) narrower. This embodiment ensures that loops (6) are formed between these assembly points (4). When the strap (1) has gone around the vertical structure and Description 2/2

  that the smaller of the rings has passed into the larger, the structure is strangled by this tie system. The user therefore has a multitude of safe inking points offered by all these loops (6) which allow the easy passage of carabiners or connectors. With this device, it is easy for the user to install a haul and manage effortlessly and safely the descent of the load and hers. The mechanical strength properties of straps (1) and (5), assemblies (3) and (4), rings (2) must meet the same requirements set by the standards applicable to the use of the equipment.

  By way of non-limiting example, the strap will have dimensions of the order of 2.5 m for the length and 10 cm for the width. The device according to the invention is particularly intended for aerial activities on vertical structures.

Claims (4)

claims   1/1 1) Device for lifting or lowering a load, using a strap, along a vertical structure offering no inking point, characterized by the width of the strap offering a sufficient friction surface and limiting the risk of slipping along the vertical structure.   2) Device for lifting or lowering a load, using a strap, according to claim 1, characterized in that each end of said strap is equipped with a ring of different size, allowing the passage of the smaller of the two in the larger and so the strangulation of the vertical structure.   3) Device for lifting or lowering a load, using a strap, according to claim 1, characterized in that on said strap is assembled over its entire length a second narrower strap forming at intervals of loops allowing the passage of connectors.   4) Device for lifting or lowering a load, using a strap, according to claim 1, characterized in that said strap is designed in different lengths to best fit the structure on which will be installed.