Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12196059 | Spline lubrication for DTH hammers | Olivier Bruandet | 2025-01-14 |
| 8151901 | Impact device and method for generating stress pulse therein | Markku Keskiniva, Mauri Esko, Erkki Ahola, Aimo Helin, Timo Muuttonen | 2012-04-10 |
| 8061434 | Percussion device | Markku Keskiniva, Mauri Esko, Erkki Ahola | 2011-11-22 |
| 7891437 | Method for breaking rock | Markku Keskiniva, Erkki Ahola, Mauri Esko, Aimo Helin | 2011-02-22 |
| 7878263 | Pressure-fluid-operated percussion device | Markku Keskiniva, Mauri Esko, Erkki Ahola, Aimo Helin | 2011-02-01 |
| 7836969 | Method for controlling pressure fluid operated percussion device, and percussion device | Erkki Ahola, Mauri Esko, Aimo Helin, Markku Keskiniva, Juha Piispanen | 2010-11-23 |
| 7743851 | Method and rock drilling rig for hole drilling | Markku Keskiniva, Mauri Esko, Aimo Helin, Juha Piispanen, Erkki Ahola | 2010-06-29 |
| 7717190 | Method for controlling percussion device, software production, and percussion device | Markku Keskiniva, Aimo Helin, Mauri Esko, Erkki Ahola | 2010-05-18 |
| 7322425 | Method of generating stress pulse in tool by means of pressure fluid operated impact device, and impact device | Markku Keskiniva, Mauri Esko, Erkki Ahola, Aimo Helin, Timo Muuttonen | 2008-01-29 |
| 7290622 | Impact device with a rotable control valve | Markku Keskiniva, Mauri Esko, Erkki Ahola | 2007-11-06 |
| 7178447 | Control valve and a method for a percussion device with a working cycle involving several coupling moments | Antti Koskimaki, Markku Keskiniva, Mauri Esko, Erkki Ahola, Aimo Helin | 2007-02-20 |
| 7174824 | Control valve in a percussion device and a method comprising a closed pressure space at the end position of the piston | Antti Koskimaki, Markku Keskiniva, Erkki Ahola | 2007-02-13 |
| 7013996 | Impact device | Markku Keskiniva, Erkki Ahola, Esa Rantala | 2006-03-21 |
| 6732814 | Rock drilling machine | Jarmo Heinonen | 2004-05-11 |
| 6705407 | Rock drilling and mounting frame | Jarmo Heinonen | 2004-03-16 |
| D459366 | Support element for supporting stabilator pistons of an axial bearing in a rock drill | Jarmo Heinonen | 2002-06-25 |
| D439916 | Fastening body for a rock drill | Jarmo Heinonen | 2001-04-03 |
| 6186246 | Method for adjusting drilling of drilling machine and rock drill | Timo Muuttonen, Aimo Helin, Timo Kiikka, Pekka Salminen | 2001-02-13 |
| 6112832 | Method and apparatus for controlling a rock drill on the basis of sensed pressure pulses | Timo Muuttonen, Timo Kiikka | 2000-09-05 |