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. 22, 2011
Filed:
Aug. 06, 2008
Donald H. Van Steenwyk, Paso Robles, CA (US);
Dennis J. Buckley, Paso Robles, CA (US);
James R. Higginbotham, The Woodlands, TX (US);
Mark Chustz, Porter, TX (US);
Raymond W. Teys, Pisomo Beach, CA (US);
Michael A. Yoshimune, Paso Robles, CA (US);
Donald H. Van Steenwyk, Paso Robles, CA (US);
Dennis J. Buckley, Paso Robles, CA (US);
James R. Higginbotham, The Woodlands, TX (US);
Mark Chustz, Porter, TX (US);
Raymond W. Teys, Pisomo Beach, CA (US);
Michael A. Yoshimune, Paso Robles, CA (US);
Scientific Drilling International Inc., Houston, TX (US);
Abstract
A housing including longitudinally extending tubular members interconnected to allow controlled relative bending thereof, during a drilling operation, a rotary drive transmitting torsion bar extending generally longitudinally within the housing to controllably bend in response to relative bending of said members, a rotary drill bit operatively connected to said torsion bar to be rotated as the bar rotates, a rotary drive operatively connected to the torsion bar to rotate the bar, means for controlling relative bending of the said members during torsion bar rotation and as a function of such rotation.