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:
Mar. 22, 2016
Filed:
Oct. 06, 2010
Applicant:
John R. Webster, Derby, GB;
Inventor:
John R. Webster, Derby, GB;
Assignee:
ROLLS-ROYCE plc, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21D 10/00 (2006.01); C21D 7/06 (2006.01); C22F 3/00 (2006.01); B23K 26/00 (2014.01); B23K 26/073 (2006.01);
U.S. Cl.
CPC ...
C21D 10/00 (2013.01); B23K 26/0069 (2013.01); B23K 26/0734 (2013.01); C21D 7/06 (2013.01); C22F 3/00 (2013.01); B23K 2201/001 (2013.01);
Abstract
An apparatus for pre-stressing a component, the apparatus includes means to direct a beam of radiation in a path through a medium adjacent to the component between a pair of electrodes to produce ionisation in the path through the medium and means to produce an electrical discharge between the pair of electrodes in the path through the medium to produce a pressure pulse in the medium adjacent to the component without the electrical discharge directly contacting the component, the pressure pulse impacting a surface of the component to produce a region of compressive residual stress within the component.