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:
Oct. 08, 2002
Filed:
Jun. 07, 2001
Applicant:
Inventors:
Unto Ahtola, Tampere, FI;
Arne Lislerud, Tampere, FI;
Assignee:
Sandvik Tamrock Oy, , FI;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 4/702 ;
U.S. Cl.
CPC ...
E21B 4/702 ;
Abstract
A method and a rock drilling apparatus for drilling holes in rock according to a predetermined drilling plan. The method comprises measuring the location of each hole in the rock by inserting a measuring device into the hole, and calculating the deviation of the end of the measured hole from the location determined in the drilling plan. The rock drilling apparatus comprises a measuring device that can be inserted into a drill hole, and means for transferring the measurement values measured by the measuring device to control means of the rock drilling apparatus.