Covering unit e.g. superjacent slate, fixing device for e.g. batten, has end terminated by fixation hook permitting fixation on support and comprising branch which is spiral shaped and supported on bottom side of support

摘要

The device has an end terminated by a retaining hook (5) that retains the lower edge of a superjacent slate, and another end terminated by a fixation hook (6) permitting the fixation on a support (2). The hook (6) is U shaped and has a branch (21) presenting a spiral shape and supported on a bottom side of the support while installing the device. The hook has another branch conformed to hold the support of standard thickness.