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:
Jan. 31, 1995
Filed:
Oct. 04, 1993
Applicant:
Inventor:
Charles D Hailey, Oklahoma City, OK (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166 558 ; 175267 ;
Abstract
A downhole rotary cutting tool having an elongated cylindrical body with radially expanded cutting blades that are controlled by application of selected fluid as controlled from a surface source. The cutting blades have a combined abrading/jetting capability as hardened cutting surfaces are disposed at critical points of each blade and each cutting blade is ported to provide lateral jet emissions for entry into the surrounding earth medium.