Patent ID: 8907538

Claim:
A rotary labeling machine comprising a carousel supporting a plurality of motor-plate units along the periphery thereof, wherein said motor plate units are connected to said carousel, each said motor-plate unit comprising a motor and a container-holder plate suitable to support a container to be labeled, said motor comprising: a housing having connecting portions for connecting the motor to a carrousel of the labeling machine, the connecting portions having connecting holes; a stator fixed within the housing; a motor shaft supported for rotation within the housing; a rotor connected to the motor shaft; and a coupling flange having coupling seats for connection with the container-holder plate, wherein: said motor shaft and said coupling flange are formed as a single piece such as to form a single body shaft-flange unit and said coupling seats comprise a plurality of coupling holes directly formed in said single body shaft-flange unit and housing coupling screws in contact both with the shaft-flange unit and the plate to directly connect the plate to the shaft-flange unit; an annular gap is formed between the stator and the rotor, the annular gap having a larger average diameter than the diameter of a circle on which the coupling holes of the coupling seats are arranged; and the annular gap has a smaller average diameter than the diameter of a circle on which the connecting holes of the connecting portions are arranged, wherein said motor defines a through opening to allow alignment means or other accessories of the labeling machine access to the container-holder plate through the motor.