Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11724379 | Rotary-percussive hydraulic perforator provided with a control chamber permanently connected to a low-pressure accumulator | — | 2023-08-15 |
| 11383368 | Percussion apparatus provided with a centering device | — | 2022-07-12 |
| 10676997 | Hydraulic drilling apparatus intended to drill boreholes | — | 2020-06-09 |
| 10569404 | Percussion apparatus | — | 2020-02-25 |
| 9981371 | Method for switching the striking stroke of a striking piston of a percussion device | — | 2018-05-29 |
| 9194182 | Hydraulic rotary percussive device intended to drill boreholes | — | 2015-11-24 |
| 8413741 | Hydraulic rotary percussive device of the drill type | — | 2013-04-09 |
| 7434503 | Pressure regulating device for a percussive hydraulic apparatus | — | 2008-10-14 |
| 7413028 | Ramming device to be assigned to a rock breaker | — | 2008-08-19 |
| 7364168 | Device for assembling the casing and the body of a hydraulic rock-breaker | — | 2008-04-29 |
| 7234548 | Hydraulic rotary-percussive hammer drill | — | 2007-06-26 |
| 6857482 | Percussive implement of the rock breaker type | — | 2005-02-22 |
| 5669281 | Method and machine for altering the striking stroke of a percussive machine moved by a pressurized incompressible fluid | — | 1997-09-23 |
| 5388842 | Device for holding the tool of a hydraulic rock breaker | Bernard Piras | 1995-02-14 |
| 4800797 | Hydraulic percussion device and method of controlling same | — | 1989-01-31 |