Patent ID: 7172230

Claim:
Pneumatic angular gripper including a gripper body forming a cylinder chamber and a recess in communication with each other by means of an intermediate hole, a control piston positioned and movable alternatively in said chamber under the action of a fluid under pressure and having a piston stem which passes in said intermediate hole and terminates in a head on a level with said recess, and a pair of jaws supported on respective rotation axes in said recess and turning in opposite directions between an opening and closing position in response to alternative movements of the piston in said chamber, each said jaw being connected to the head of the control piston stem by means of a connecting rod forming a longitudinal extension of the jaw and susceptible to angular movements in regards to the head of the stem of said piston, each jaw in one of its parts facing the head of the piston stem, is equipped with a base hole which extends along a first plane substantially perpendicular to a second plane comprising the rotation axis of the jaw said first plane is at a distance from the rotation axis, and in which said connecting rod has a distal part housed in said base hole and a proximal part radially associated with a pin placed in the head of the piston stem, said pin turning and being parallel to the rotation axis of the jaw, wherein the distal part of the connecting rod is fixed in the base hole of the jaw, and the proximal part of said connecting rod is guided and slides crossways at least in the respective turning pin on board the head of the piston stem.