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. 23, 2007
Filed:
Mar. 20, 2007
Petur Thors, Decatur, AL (US);
Bruce Kouse, Springfield, OH (US);
Gerry Minshall, Exhall, Alcester Warks, GB;
Petur Thors, Decatur, AL (US);
Bruce Kouse, Springfield, OH (US);
Gerry Minshall, Exhall, Alcester Warks, GB;
Other;
Abstract
An improved tool and method for enhancing the surface of a heat transfer tube are provided. The tool, which can be easily added to existing manufacturing equipment, includes cutting bits that may be retracted with a housing. The cutting bits include a cutting edge to cut through the surface of a tube and a lifting edge to lift the surface of the tube to form protrusions. A method for enhancing the inner surface of the tube includes mounting a tool on a shaft, positioning the tool in the tube and causing relative rotation and axial movement between the tube and the tool to cut at least partially through at least one ridge formed along the surface of the tube to form ridge layers and lift the ridge layers to form protrusions.