The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 1998
Filed:
Jun. 19, 1996
Jacques Jean-Marie Spariat, Saint Medard En Jalles, FR;
Abstract
The present invention concerns a plasma torch with an integrated independent electromagnetic coil for moving the arc foot. The torch includes a bare torch portion housing a single upstream electrode or a pair of coaxial upstream and downstream electrodes. The electrodes are tubular and are cooled by an appropriate cooling circuit. An injection mechanism injects plasma gas downstream of the upstream electrode or between the upstream electrode and the downstream electrode. A starter mechanism ensures starting of the torch. A field coil moves the arc foot. The field coil has a generally cylindrical shape and is formed of a set of three supports made of an electrically non-conducting material with the shape of coaxial cylindrical tubes connected at one extremity of the unit to a crown provided with an electric connection mechanism. The electric connection mechanism is connected to at least one helical winding provided on at least one of the faces of one of the three cylindrical supports. The unit is moveable and able to be inserted in the bare torch around the upstream electrode.