An end effector for use with robotic arms and like devices that utilizes a flexible band to draw an object against an anvil having a concave surface. One typical convex surface is created by a V-block, with an apex of the V being centrally located. If an object to be grasped is fragile, the contour of...http://www.google.es/patents/US5310233?utm_source=gb-gplus-sharePatente US5310233 - Robotic end gripper with a band member to engage object
Robotic end gripper with a band member to engage object