Patent ID: 7188832

Claim:
In a locating and clamping apparatus comprising: a clamp body having a longitudinal hole; a locating pin projecting from the clamp body, said locating pin having a hollow hole communicating with said longitudinal hole; a seating surface formed outside the locating pin; a clamp arm movably disposed in both the longitudinal hole of the clamp body and the hollow hole of the locating pin; a direct acting actuator having an output member reciprocatably disposed in the longitudinal hole of the clamp body, said output member and said clamp arm being connected to each other through a connecting pin; a fulcrum pin extending through a guide slot formed in the clamp arm, said fulcrum pin being supported at each end thereof by a fulcrum pin supporting hole in the clamp body; and a spatter discharge hole formed in the clamp body to allow the longitudinal hole to communicate with an outside; wherein a workpiece can be clamped between a distal end portion of the clamp arm and the seating surface; the improvement which comprises: a longitudinal groove formed at an outer end of said fulcrum pin supporting hole; slide grooves respectively formed in a pair of mutually opposing side walls of said longitudinal groove; and a cover fitted in said slide grooves, said cover preventing said fulcrum pin from coming off.