Patent ID: 9394635
Filing Date: 2016-07-19
CPC Classification: D03D

Claim Text:
1. Weft feeder device for threads, in particular for weaving looms, of the type comprising a main body ( 1 ) within which there is housed an electric motor driving a rotary shaft ( 2 ), the rotary shaft ( 2 ) driving into rotation, with its middle portion, a rotor ( 3 ) and a drum (T) rotatably mounted on the end portion of said rotary shaft ( 2 ) and kept fixed thereto by magnetic means ( 6 , 7 ) and wherein there are furthermore provided pairs of optical emitting/receiving sensors (E, R) respectively arranged on the drum (T) and on an extension of the main body ( 1 ) of the weft feeder which extends laterally to the lateral surface of the drum (T), said pairs of sensors (E, R) being apt to detect the presence/absence of a thread passing therebetween, characterised in that the outer surface of said drum (T) consists of multiple independent sectors ( 4 ), and in that said emitting sensors (E) and the relative feeding and control circuit are embedded in the thickness of one ( 4 s ) of said sectors ( 4 ), arranged opposite said extension of the main body ( 1 ) of the weft feeder.