Obara Corporation

Katuji Tanabe

Kazuharu Fujii

There is disclosed a welding torch provided with orifice plate. The orifice plate is screwed to an outer circumference of a gas diffuser and has a plurality of apertures staggered in the peripheral surface thereof in the axial direction thereof.

Welding torch having improved gas jetting capability

A welding cable having an elongate insulating separator formed by six walls which project radially outwardly in circumferentially spaced relation to define six spaces which extend around the separator and open radially outwardly. A plurality of positive and negative conductors are alternately arranged within the circumferentially adjacent spaces. The separator, at least in the vicinity of an end thereof, is axially diametrically split into two axially extending separator parts, each including a pair of outer spaces disposed on opposite sides of an intermediate space. A positive and a negative conductor respectively extend along the intermediate space of the first and second separator parts. A pair of negative conductors, which normally extend along the outer spaces of the first separator part, are extracted radially outwardly and are inserted into the outer spaces of the second separator part. The positive conductors which normally extend along the outer spaces of the second separator part are extracted radially outwardly and inserted into the outer spaces of the first separator part. The extracted positive conductors are provided with insulating covers. The first separator part and the three positive conductors grouped therein are fixed to one terminal contact end, and the second separator part and the three negative conductors therein are fixedly secured to another terminal contact end.

Welding cable

A welding cable comprises an insulating separator, and twisted positive and negative conductors alternately arranged between radial dividing walls defined by the insulating separator. Either the twisted positive or negative conductors are covered by insulating covers near the end of the separator and are extracted from the separator forming a first group of conductors which is pressedly fitted to one terminal contact end. The remaining group of conductors, along with the separator, are pressedly fixed to the other terminal contact end.

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Tokyo, Japan

Katuji Tanabe