Patent ID: 7220094

Claim:
A transfer device for transferring stacks which have an external cylindrical shape, of products resting on one of their edges between a conveyor set upstream for advance of the stacks in a direction (a) transverse to the generatrices of said cylindrical shape and a conveyor set downstream for advance of the stacks in a direction (b) parallel to the generatrices of said cylindrical shape, or vice versa, the transfer device comprising at least one assembly for gripping and conveying each stack, the stack having the external cylindrical shape, wherein said at least one gripping assembly turns, according to a motion of revolution (c) about a first axis (X), between a position (A) of engagement with said stack, in a point corresponding to an output end of the conveyor set upstream, and a position of release (B) of the stack onto said conveyor set downstream, the transfer device further comprising motor means for the driving of said at least one gripping assembly according to a law of motion of non-uniform speed.