A linear unit for transferring objects, particularly for removing workpieces from a linear conveying track, comprising vertically and horizontally movable grippers for grasping the objects and comprising a gripper carriage which is movable between a pick-up position and delivery position and having first...http://www.google.fr/patents/US4975018?utm_source=gb-gplus-shareBrevet US4975018 - Linear unit for transferring objects