Unidirectional ratchet spanner for driving screw, has stationary claw formed at flank of head and including wavy surface, and pin movably arranged over guide opening and securely arranged in lateral surface of ratchet claw

摘要

The ratchet spanner (10) has a head (12) formed on a grip (11). A guide opening is formed by an intervening lug and provided with a drive end and a non-drive end, which is arranged next to an obtuse end. A stationary claw (15) is formed at a flank of the head and includes a wavy surface. A pin is movably arranged over the guide opening and securely arranged in a lateral surface (161) of a ratchet claw (14). An outer surface of the intervening lug corresponds with an inner surface of a curved recess (16).