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:
Oct. 28, 2003
Filed:
Dec. 14, 2001
Applicant:
Inventors:
Regis Augeraud, Lesquin, FR;
Michel Delzenne, Franconville, FR;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 1/000 ;
U.S. Cl.
CPC ...
B23K 1/000 ;
Abstract
Protective cap for a plasma arc working torch, includes a cap body ( ) having an opening ( ) for the passage of plasma gas, the cap body ( ) being made of at least one material of ceramic type. The ceramic is a silicon nitride or an aluminum silicate. Preferably, the ceramic cap body ( ) is clad with boron nitride deposited on the external surface of the cap body, the thickness of the cladding of boron nitride being less than 3 mm. Torch provided with such a cap and its use in a steel plate plasma cutting operation.