F16B 37/0892

Quickly-detachable {or mountable} nuts, e.g. consisting of two or more parts; Nuts movable along the bolt after tilting the nut {engaging the bolt laterally, i.e. without the need to engage the end of the bolt in two or more pieces, e.g. assemblies made by two C-shaped nuts mutually interlocked, or retained by an additional member }