| Patents for E21B 1 - Percussion drilling (2,080) |
|---|
| 01/15/1986 | EP0168382A1 Device for percussive and/or rotary drilling |
| 01/07/1986 | US4562974 Rock breaking apparatus |
| 12/27/1985 | EP0165341A1 Single space damper and its use in a hand tool |
| 12/10/1985 | CA1197836A1 Pressure-medium driven percussion device |
| 10/01/1985 | US4544040 Apparatus for driving an elongated piece into and/or out of the ground |
| 09/18/1985 | EP0154778A1 Percussion drill |
| 07/31/1985 | EP0149967A1 Hydraulically actuated percussion tool |
| 07/16/1985 | US4529044 Electropneumatic hammer drill or chipping hammer |
| 07/03/1985 | EP0147262A1 Sound-attenuating housing for pneumatic drills |
| 06/19/1985 | EP0145701A1 Percussion drill controls |
| 06/19/1985 | EP0145241A2 Improvements in or relating to apparatus and methods for driving projectiles |
| 06/19/1985 | EP0145070A2 Device for driving a drilling and/or impacting tool |
| 06/11/1985 | US4522273 Drilling rig |
| 05/22/1985 | EP0141903A1 Percussion drilling machine |
| 05/15/1985 | EP0141728A2 Device for sound attenuation of drills |
| 05/07/1985 | CA1186592A1 Hydraulic reciprocating device |
| 04/23/1985 | US4512417 For a downhole drill |
| 03/26/1985 | US4506742 Vibrationless percussion tool |
| 01/22/1985 | US4494614 Hydraulically operated impact device |
| 11/27/1984 | US4484638 Liquid inertia tool |
| 11/27/1984 | CA1178513A1 Hydraulically operated impact device |
| 11/07/1984 | EP0094403A4 Rock breaking apparatus. |
| 10/31/1984 | EP0123671A2 Drilling device |
| 10/02/1984 | US4474248 Hydraulic demolishing rock drill |
| 08/28/1984 | US4467699 Pneumatic motor |
| 08/21/1984 | US4466493 Reciprocating linear fluid motor |
| 07/18/1984 | EP0113654A2 Rotating and/or percussive drilling machine |
| 07/17/1984 | US4460051 Percussion drill hammer |
| 05/29/1984 | US4450920 Hydraulic reciprocating machines |
| 05/15/1984 | CA1167435A1 Rock drilling apparatus |
| 05/15/1984 | CA1167332A1 Pneumatic motor for rock drills and the like |
| 05/02/1984 | EP0107628A1 A hand-held hammer tool |
| 04/03/1984 | US4440237 Pavement breaker |
| 03/06/1984 | CA1163201A1 Narrow profile power handle for line trimmer and the like |
| 02/07/1984 | US4429752 Pneumatic motor for rock drills and the like |
| 12/21/1983 | EP0096639A1 Drilling hammer |
| 11/23/1983 | EP0094403A1 Rock breaking apparatus. |
| 10/04/1983 | US4407390 Pneumatic motor |
| 09/20/1983 | US4405020 Automatic drive hammer system |
| 08/30/1983 | US4401168 Impact applying mechanism |
| 08/02/1983 | CA1151028A1 Valveless pneumatic hammer |
| 06/14/1983 | US4387775 Rock drilling apparatus |
| 06/09/1983 | WO1983001977A1 Rock breaking apparatus |
| 05/31/1983 | CA1147219A1 Pneumatic motor |
| 04/26/1983 | CA1145264A1 Thermal impulse generator |
| 03/29/1983 | US4377991 Internal combustion apparatus |
| 01/04/1983 | US4366869 Hammer drill |
| 01/04/1983 | US4366868 Rock drill apparatus |
| 12/14/1982 | CA1137416A1 Drilling and chipping hammer with internal combustion engine drive |
| 11/23/1982 | CA1136118A1 Combined impact and pressure liquid rock drill |
| 11/03/1982 | EP0063725A2 Boring and chiseling hammer |
| 11/02/1982 | US4356871 Hydraulic control system for a rock drill |
| 10/26/1982 | US4355691 Hydraulic drilling apparatus |
| 10/12/1982 | US4353426 Percussive tools |
| 08/25/1982 | EP0058650A1 An hydraulically operated impact device |
| 08/24/1982 | CA1130171A1 Hydraulic drilling apparatus |
| 08/10/1982 | US4343368 Idle stroke braking unit for an impact device |
| 08/10/1982 | US4343227 Hydraulic percussion apparatus |
| 08/03/1982 | CA1128971A1 Self pumping seal for a reciprocating member |
| 07/20/1982 | US4340121 Pneumatic rock drills |
| 07/20/1982 | US4340120 Annular casing hammer |
| 07/06/1982 | CA1127046A1 Hydraulic precussion apparatus |
| 06/22/1982 | CA1126128A1 Striking apparatus |
| 06/08/1982 | US4333492 Liquid inertia tool |
| 06/01/1982 | CA1124591A1 Percussive pneumatic impact device |
| 05/26/1982 | EP0052102A1 Vibration isolator device for a percussion tool |
| 04/27/1982 | US4326449 Double acting hydraulic jack with an end of stroke device |
| 03/24/1982 | EP0047944A1 Percussion tool |
| 03/16/1982 | US4319784 Apparatus for water jet and impact drilling and mining |
| 02/23/1982 | CA1118689A1 Internal combustion engine driven drilling and chipping hammer |
| 01/05/1982 | US4308925 Pneumatic impact motor |
| 12/15/1981 | CA1114249A1 Motor-driven hammer drill |
| 12/10/1981 | WO1981003518A1 Vibration isolator device for a percussion tool |
| 12/08/1981 | CA1113832A1 Demolition tool for breaking solid materials |
| 11/25/1981 | EP0040290A2 Elastic rubber mount |
| 10/14/1981 | EP0037804A2 Rock drilling apparatus |
| 10/13/1981 | US4294317 Drillhead unit |
| 10/06/1981 | CA1110225A1 Rotating drill tool with impact device |
| 09/29/1981 | US4291771 Rotary percussion hydraulic drilling machine |
| 09/22/1981 | US4290496 Combination impact and pressure liquid rock drill |
| 09/22/1981 | CA1109363A1 Hydraulic powered rock drill |
| 09/15/1981 | US4289209 Impact device with fluid tool rotation motor |
| 09/01/1981 | US4286675 Narrow profile power handle for line trimmer and the like |
| 08/18/1981 | US4283991 Percussion mechanism |
| 08/05/1981 | EP0032924A1 Percussion drilling rig |
| 07/28/1981 | US4280570 Drill hammer |
| 06/30/1981 | US4275794 Tool equipped with a percussive device |
| 06/11/1981 | WO1981001590A1 Pneumatic percussion machine |
| 05/19/1981 | CA1101408A1 Rock drill |
| 05/12/1981 | US4266465 Percussion mechanism |
| 05/05/1981 | US4266171 Advance control system for use in a drilling apparatus |
| 04/30/1981 | WO1981001182A1 Self pumping seal for a reciprocating member |
| 04/28/1981 | US4264107 Demolition tool for breaking solid materials |
| 04/21/1981 | CA1099613A1 Drilling machine, especially a rock drill |
| 03/10/1981 | CA1097330A1 Method and apparatus for driving pipe |
| 02/19/1981 | WO1981000427A1 Percussion drilling rig |
| 02/03/1981 | US4248133 Impact mechanism |
| 01/06/1981 | US4243107 Hydraulic hammer mounted on a movable boom |
| 12/30/1980 | CA1092391A1 Drilling and driving device |
| 12/02/1980 | US4236588 Hammer drill with a lockable tool holder |