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. 22, 2017
Filed:
Jul. 06, 2012
Applicant:
Ari Tuunanen, Tampere, FI;
Inventor:
Ari Tuunanen, Tampere, FI;
Assignee:
SANDVIK MINING AND CONSTRUCTION OY, Tampere, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02F 9/26 (2006.01); E21B 47/022 (2012.01); E21B 7/02 (2006.01); G01C 25/00 (2006.01);
U.S. Cl.
CPC ...
E21B 47/022 (2013.01); E21B 7/02 (2013.01); E21B 7/025 (2013.01); G01C 25/00 (2013.01);
Abstract
A method for calibrating sensors in a drilling apparatus provided with a movable carrier, a frame, a boom assembly mounted to rotate about a turning axis vertical to the frame, and an angle sensor for measuring the turning angle of the boom assembly and gravity-based inclination sensors for measuring inclination. When the boom assembly is turned in relation to the frame, the value of the turning angle and the inclination values provided by the inclination sensors are measured, and on the basis of the measured values, deviation of the values of the inclination sensors from the real inclination angle value are determined.