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. 30, 2004
Filed:
Dec. 06, 2000
Thomas A. Lorincz, Hollister, CA (US);
Therma Corporation, Inc., San Jose, CA (US);
Abstract
A pipe electropolishing system ( ) for in place polishing of a pipe ( ) has provision for detecting the instant position of a cathode ( ) within the pipe ( ) such as cable marks ( ) and cable mark sensor ( ), an infrared camera ( ), heat sensing crayon marks ( ), thermisters ( ), and capacitance sensors ( ), used individually or in combination. According to the inventive in place electropolishing method ( ) when it is determined that the cathode is in a nonuniform portion ( ) of the pipe ( ), then increased polishing action is provided as by increasing the voltage using a variable power supply ( ) and/or by slowing down the progress of the cathode ( ) using a variable speed cable puller ( ).