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:
Dec. 11, 2018
Filed:
Sep. 14, 2016
Applicant:
Sandvik Mining and Construction Oy, Tampere, FI;
Inventors:
Jarno Viitaniemi, Tampere, FI;
Ilkka Lahdelma, Tampere, FI;
Tommi Kiviniemi, Tampere, FI;
Martti Leskinen, Tampere, FI;
Miika Huikkola, Tampere, FI;
Assignee:
Sandvik Mining and Construction Oy, Tampere, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 44/02 (2006.01); E21B 41/00 (2006.01); E21B 3/025 (2006.01); E21B 7/02 (2006.01);
U.S. Cl.
CPC ...
E21B 44/02 (2013.01); E21B 3/025 (2013.01); E21B 7/022 (2013.01); E21B 7/025 (2013.01); E21B 41/0021 (2013.01);
Abstract
An apparatus, rock drilling rig and method for rock drilling includes a turning device for moving a drilling tool around longitudinal axis of the tool. The turning movement is controlled by an alternating turning system so that direction of turning movement is continuously reversed to first and second turning directions. The turning angle of the tool is restricted and a safety system (is configured to monitor the operation and to ensure that a predetermined turning angle is not exceeded.