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US 3,940,653 AGranted
Arc discharge device, in particular a plasma burner
AssigneeLonza Ltd.
InventorsClaude R. Schnell, Kurt Hengartner, Heinz Gross
Life of this patent
Estimating the term…
Abstract
An apparatus for feeding a bar electrode to a plasma burner wherein the electrode is advanced and rotated by a roller having its axis inclined at an acute angle relative to the surface of the electrode.
Claims9
A device for feeding a cylindrical bar-type electrode into a plasma burner and simultaneously rotating said electrode comprising:
- supporting means sustaining the electrode on two longitudinally extending and circumferentially spaced surface lines thereof and having two non-deformable surfaces which in contact with the electrode have a substantially low coefficient of friction;
- a driving roller having its axis inclined at an acute angle to said surface lines of the electrode;
- a surface layer on said driving roller which is elastically deformable and in contact with said electrode and has a coefficient of friction substantially higher than that of said surfaces of said supporting means;
- means for urging said driving roller against said electrode sustained by said supporting means, thereby pushing the electrode partially into said elastically deformable high friction surface layer of said driving roller and providing a contact area between said layer and said electrode;
- and
- driving means connected with said driving roller for rotation thereof.
3 more elements
A device for feeding a cylindrical bar-type electrode into a plasma burner and simultaneously rotating said electrode, comprising:
- supporting means sustaining the electrode along a plurality of spaced points along two longitudinally extending circumferentially spaced surface lines of said electrode, said supporting means including a plurality of spheres in seatings which are freely rotatable in all directions, said spheres having non-deformable surfaces which in contact with the electrode have a substantially low coefficient of friction;
- a driving roller having its axis inclined at an acute angle to said surface lines of the electrode;
- a surface layer on said driving roller which is electrically deformable and in contact with said electrode and has a coefficient of friction substantially higher than that of said surfaces of said supporting means;
- means for urging said driving roller against said electrode sustained by said supporting means, thereby pushing the electrode partially into said elastically deformable high friction surface of said driving roller and providing a contact area between said roller and said electrode;
- and
- driving means connected with said driving roller for rotation thereof.
3 more elements
Dependencies are inferred from the claim text.