Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
191 words
An arc plasma generator comprising: a consumable cathode having the form of a cylinder and made of a plasma forming material; an anode having the form of a cylinder of a greater diameter than that of the cathode, arranged coaxially with said consumable cathode and electrically connected thereto; a power unit for maintaining an arc, forming said electrical connection between said consumable cathode and said anode and having therefore at least two terminals, one of which being connected to said consumable cathode and the other to the anode, a tubular plasma guide connected with one of its end faces to an end face of said anode, an electromagnet arranged in said tubular plasma guide and coaxially therewith, a housing for said electromagnet made of a non-magnetic material, enclosing the electromagnet and having a cross-sectional area that any imagined straight line projected from a working end face the consumable cathode through an outlet of the plasma guide, would cross at least one of the housing of the electromagnet and the plasma guide, and a focusing solenoid disposed about said tubular plasma guide and connected in opposition with the coil of the electromagnet.
Claim 2
Dependent Claim
191 words
An arc plasma generator comprising: a consumable cathode having the form of a cylinder and made of a plasma forming material; an anode having the form of a cylinder of a greater diameter than that of the cathode, arranged coaxially with said consumable cathode and electrically connected thereto; a power unit for maintaining an arc, forming said electrical connection between said consumable cathode and said anode and having therefore at least two terminals, one of which being connected to said consumable cathode and the other to the anode, a tubular plasma guide connected with one of its end faces to an end face of said anode, an electromagnet arranged in said tubular plasma guide and coaxially therewith, a housing for said electromagnet made of a non-magnetic material, enclosing the electromagnet and having a cross-sectional area that any imagined straight line projected from a working end face the consumable cathode through an outlet of the plasma guide, would cross at least one of the housing of the electromagnet and the plasma guide, and a focusing solenoid disposed about said tubular plasma guide and connected in opposition with the coil of the electromagnet.
Claim 3
Dependent Claim
24 words
An arc plasma generator as set forth in claim 1 wherein an insulating liner is placed between said tubular plasma guide and said anode.
Claim 4
Dependent Claim
33 words
An arc plasma generator as set forth in claim 1 wherein the inner surface of said tubular plasma guide is provided with ribs extending at an angle to an expected flow of plasma.
Claim 5
Dependent Claim
26 words
An arc plasma generator as set forth in claim 1 wherein said electromagnet has the form of a cone whose vertex is facing said consumable cathode.
Claim 6
Dependent Claim
25 words
An arc plasma generator as set forth in claim 1 wherein said electromagnet has the form of two cones abutting each other on their bases.
Claim 7
Dependent Claim
47 words
An arc plasma generator as set forth in claim 1 wherein the number of turns per unit length of said focusing solenoid on said tubular plasma guide behind said electromagnet in the direction of an expected flow of plasma is greater than on the remaining portion thereof.
Claim 8
Dependent Claim
75 words
A plasma arc apparatus for treating the surfaces of work-pieces, comprising an arc plasma generator of claim 1, an assembly for holding the work-piece to be treated, constructed as a cover fixed on an outlet end face of said plasma guide, made of a nonmagnetic material and having an opening for holding the work-piece to be treated, and a disk coil attached to said cover and connected in an aiding manner with the focusing solenoid.