US Patent 8650761 Fastening apparatus

A fastening apparatus for a limit stop element of an electric hand tool, in particular a hand circular saw, is disclosed. The fastening apparatus includes a guide, into which the limit stop element can be inserted and along which it can be displaced, and a locking mechanism, which can lock the limit stop element in the displacement direction. The locking mechanism has a spring element, which, in its locked position, clamps the limit stop element with a clamping force directed against the limit stop element and, in a released position, permits a displacement of the limit stop element.