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:
Nov. 17, 2009
Filed:
Feb. 28, 2006
Kent Coleman, Concord, NC (US);
David Wayne Gandy, Concord, NC (US);
Greg Frederick, Harrisburg, NC (US);
Rich Tilley, Harrisburg, NC (US);
Kent Coleman, Concord, NC (US);
David Wayne Gandy, Concord, NC (US);
Greg Frederick, Harrisburg, NC (US);
Rich Tilley, Harrisburg, NC (US);
Electric Power Research Institute, Inc., Palo Alto, CA (US);
Abstract
A method for the inspection and repair of a tube includes electrical discharge machining an access hole into the tube, optionally at or near the uppermost location on the tube, near the upper header; performing inspection of the tube, optionally using a visual or an eddy current inspection technique; providing an inner diameter flush-mounted plug insert which has been machined for re-inserting into the access hole; and attaching the plug insert to the tube.