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. 10, 1987
Filed:
Sep. 11, 1985
Applicant:
Inventors:
Thomas R Bishop, Houston, TX (US);
Archie W Peil, Houston, TX (US);
Arnal B Foreman, Jr, Houston, TX (US);
Assignee:
Bowen Tools, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166173 ;
Abstract
A casing scraper which provides substantially 360.degree. of contact between the interior diameter of casing. The cutter blades of the casing scraper are of a segmented tubular shape to provide a substantially 360.degree. contact area. The segmented cutter blades are biased radially outwardly by springs oriented in an alignment housing between the supporting mandrel and the cutter blades.