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:
Jun. 29, 2010
Filed:
Oct. 06, 2006
Markku Keskiniva, Ylöjärvi, FI;
Mauri Esko, Ikaalinen, FI;
Jorma Mäki, Mutala, FI;
Aimo Helin, Tampere, FI;
Juha Piispanen, Tampere, FI;
Erkki Ahola, Kangasala, FI;
Markku Keskiniva, Ylöjärvi, FI;
Mauri Esko, Ikaalinen, FI;
Jorma Mäki, Mutala, FI;
Aimo Helin, Tampere, FI;
Juha Piispanen, Tampere, FI;
Erkki Ahola, Kangasala, FI;
Sandvik Mining and Construction Oy, Tampere, FI;
Abstract
The invention relates to a method and a rock drilling rig for drilling a hole in a rock. In the method the hole is drilled with a so-called top-hammer rock drilling rig including a drill rod and a cone roller bit at the end of the drill rod. During drilling with the percussion device, stress pulses of low amplitude are produced at a high frequency of at least 200 Hz. In the rock drilling rig, the cone roller bit () at the end of the drill rod and the percussion device are configured to feed stress pulses of low amplitude, at the frequency of at least 200 Hz, via the drill rod and the cone roller bit to the rock.