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

摘要

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.