Patent ID: 7874417

Claim:
A machine for grouping packs comprising: a sliding work plane for advancing in sequence at least a consecutive and equidistanced row of packs along a predetermined advancing direction (A); and retaining means for cyclically braking the advancing of one of the packs of the row with respect to the sliding work plane, the retaining means comprising at least a striker body and a moving means for cyclically locating the striker body close to a pack advancing on the work plane, such that the striker body receives the pack in contact there-with, preventing the pack from advancing at a same speed as a previous speed thereof on the work plane, wherein said moving means comprises two chains at the opposite ends of which at least one striker body per chain is fixed, the chains developing in reciprocally specular shapes which shapes are equal to a trajectory (T) to be imparted on the striker bodies themselves, the machine having motor means for activating the chains independently along substantially the same trajectory (T).