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:
May. 05, 2015
Filed:
May. 03, 2011
Tuomo Pirinen, Tampere, FI;
Vesa Uitto, Tampere, FI;
Miika Huikkola, Tampere, FI;
Maunu Manttari, Tampere, FI;
Sami Hanski, Tampere, FI;
Isto Ahonen, Tampere, FI;
Tuomo Pirinen, Tampere, FI;
Vesa Uitto, Tampere, FI;
Miika Huikkola, Tampere, FI;
Maunu Manttari, Tampere, FI;
Sami Hanski, Tampere, FI;
Isto Ahonen, Tampere, FI;
Sandvik Mining and Construction Oy, Tampere, FI;
Abstract
The invention relates to a method and apparatus for opening threaded joints of drilling equipment () by striking the drilling equipment () with the percussion device of a rock drilling rig () and by measuring vibration originating from the drilling equipment () during striking. In addition to vibration, measuring means () measure a parameter defining at least one additional condition, on the basis of which the decision to stop striking is made.