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.

Date of Patent:
Mar. 01, 2016

Filed:

Apr. 12, 2012
Applicants:

Sergey Alexandrovich Voronin, Rensselaer, NY (US);

Christopher James Philip Clements, Burnham on Sea, GB;

Daniel Martin Mcgrath, Bristol, GB;

Fraser Gray, Clevedon, GB;

Andrew James Seeley, Bristol, GB;

Inventors:

Sergey Alexandrovich Voronin, Rensselaer, NY (US);

Christopher James Philip Clements, Burnham on Sea, GB;

Daniel Martin McGrath, Bristol, GB;

Fraser Gray, Clevedon, GB;

Andrew James Seeley, Bristol, GB;

Assignee:

Edwards Limited, Crawley, West Sussex, GB;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 10/00 (2006.01); H05H 1/34 (2006.01);
U.S. Cl.
CPC ...
H05H 1/34 (2013.01); H05H 2001/3426 (2013.01); H05H 2001/3468 (2013.01); H05H 2001/3484 (2013.01);
Abstract

To lengthen the service period on DC plasma abatement devices a modified DC plasma torch is provided with an electrically conductive cathode and an electrically conductive anode spaced apart from one another to form a gap therebetween; a metal swirl bush at least partially located within the gap and comprising a channel adapted to permit, in use, a gas to flow through the gap; and a ceramic element interposed between any one or more of: the cathode and the swirl bush; and the anode and the swirl bush.


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