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:
Aug. 09, 1977
Filed:
Sep. 15, 1975
Applicant:
Inventor:
Jackson M Kellner, Midland, TX (US);
Assignee:
Smith International, Inc., Midland, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
175 45 ; 175 61 ; 175 73 ; 175 94 ; 175230 ;
Abstract
The casing of a drill motor axis is provided with a deflection barrel free to turn to position the barrel relative to the motor to apply lateral force to the side of the motor directed along any desired radius. A gravity actuated mercury potentiometer connected to the barrel provides a barrel orientation responsive electric transmitter for remote indication of the barrel orientation in the hole being drilled. A hydraulic stepping motor and meshing teeth are used to position the barrel azimuthally about the motor axis with the use of vertical alignment means.