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:
Jul. 24, 2018
Filed:
Jul. 01, 2015
Applicant:
Smith International, Inc., Houston, TX (US);
Inventors:
David A. Stokes, The Woodlands, TX (US);
Timothy M. O'Rourke, Houston, TX (US);
Nathan E. Fuller, Spring, TX (US);
Assignee:
SMITH INTERNATIONAL, INC., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 29/00 (2006.01);
U.S. Cl.
CPC ...
E21B 29/005 (2013.01); E21B 29/002 (2013.01);
Abstract
A section milling device may include a plurality of rotatable arms that each include one or more cutting members. The rotatable arms may be rotated between a retracted position and an extended position. When rotated to the extended position, the rotatable arms may be locked or substantially limited in their movement by one or more hydraulic pistons. The rotatable arms may be held at a predetermined angle during milling operations.