ADVANCED CONTACT UNIT FOR WIRE FEEDER Russian patent published in 2009 - IPC B23K9/12 

FIELD: electricity.

SUBSTANCE: input element of portable wire feeder is electrically connected with power supply. The output element is selectively and electrically connected with input element for receiving welding current. The contactor includes the first electrical terminal, the second electrical terminal and conductive jumper for selective electrical connection of the input element with output element. The first electrical terminal is electrically connected with the input element, while the second electrical terminal is electrically connected with the output element. The conductive jumper is implemented so that it can displace between the first position, when it connects electrically the first terminal with the second one, and the second position, when it is separated from at least one of terminals in order to disconnect terminals from each other. At least one of the following elements, i.e. the first electrical terminal, the second electrical terminal and/or jumper are implemented so that they can be disconnected from contactor independently for maintenance, repair or replacement purposes. Driving mechanism of wire feeding system includes motor and motor-actuated feed roller. It is intended for weld wire guiding to outlet element to ensure welding operation performance through guiding sleeve.

EFFECT: easier replacement of failed elements and reduction of wastes polluting environment.

10 cl, 6 dwg