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:
May. 14, 1991
Filed:
Mar. 18, 1988
Gerald D Lynde, Bossier City, LA (US);
Kenneth W Winterrowd, Shreveport, LA (US);
Harold H Harvey, Jr, Bossier City, LA (US);
Tri-State Oil TOols, Inc., Bossier City, LA (US);
Abstract
An oil field cutting tool (10) for progressively cutting away a tubular member (14) installed within a well from the upper annular end (12) of the tubular member (14). The cutting tool (10) includes a plurality of elongate blades (32) spaced about the periphery of the cylindrical body (18) of the cutting tool (10). A plurality of cutting elements (42) of a predetermined size and shape are secured in a predetermined pattern on the leading surface of the blades (32) in a plurality of closely spaced parallel rows extending transversely between the sides of the blades (32) and in a plurality of closely spaced parallel columns extending generally longitudinally between the ends of the blades (32).