| Patents for B25D 9 - Portable percussive tools with fluid-pressure drive, e.g. having several percussive tool bits operated simultaneously (2,753) |
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| 12/24/1997 | WO1997048353A1 Surgical instrument for mechanical removal of bone cement, and process for production of shock waves |
| 12/16/1997 | US5697459 Directional self-propelled drill |
| 12/09/1997 | US5695014 Ram boring apparatus |
| 10/22/1997 | CN2265272Y Energy-storage impulse mechanism |
| 10/07/1997 | US5673759 For use with a fluid-filled impulse tool |
| 09/23/1997 | US5669281 Method and machine for altering the striking stroke of a percussive machine moved by a pressurized incompressible fluid |
| 09/18/1997 | WO1997033723A1 Compressed-air-operated percussion mechanism |
| 09/16/1997 | US5667022 Hydraulic impact device with continuously controllable impact rate and impact force |
| 08/28/1997 | DE19707276A1 Conical insert with internal thread, drill and hammer |
| 08/20/1997 | CN1035684C Fluid-actuated percussive drilling apparatus |
| 08/07/1997 | DE19604171A1 Electrical hand tool for surface removal |
| 08/07/1997 | DE19604169A1 Halterung eines Zusatzgeräts für Handwerkzeugmaschinen Mounting an auxiliary device for hand power tools |
| 08/06/1997 | CN2258808Y 液压锤 Hydraulic Hammer |
| 08/05/1997 | US5653295 Hydraulic precussion hammer |
| 07/30/1997 | EP0785845A1 Valve arrangement in a hydraulic percussive rock drill |
| 07/24/1997 | WO1997026116A1 Linerbolt removing tool |
| 06/25/1997 | CN1035245C Pneumatic and hydraulic impact structure |
| 06/19/1997 | WO1997021523A1 Pneumatic assembly having combined approach and strike functions, sand removal unit comprising said assembly, sand removal apparatus comprising said unit, and method for controlling said apparatus |
| 06/18/1997 | EP0638013B1 Hydraulic breaking hammer |
| 06/11/1997 | EP0778110A2 Method for modifying the operation mode of a fluid driven percussion mechanism and percussion mechanism for carrying out the method |
| 06/11/1997 | EP0687340A4 Pressure reversing valve for percussive drilling apparatus |
| 06/03/1997 | US5634524 Reverse percussion device |
| 05/06/1997 | US5626068 Hydraulic reciprocating mechanism |
| 04/29/1997 | CA2137946C Hammer for removing gates or risers from castings |
| 04/24/1997 | WO1997014870A1 Shock-absorbing mechanism for hydraulic hammering device |
| 04/23/1997 | EP0712461A4 Rotary piston driving mechanism |
| 04/17/1997 | WO1997013622A1 A piston construction for an axial bearing of a drilling machine |
| 04/17/1997 | WO1997013621A1 Method for adjusting drilling of drilling machine and rock drill |
| 04/17/1997 | CA2234390A1 A piston construction for an axial bearing of a drilling machine |
| 04/03/1997 | WO1997012120A1 Subsurface pneumatic hammer |
| 03/12/1997 | EP0760732A1 Pneumatic impact breaker |
| 03/12/1997 | EP0760731A1 Pneumatic impact breaker |
| 03/12/1997 | CN1034235C Driving control device for hammer |
| 03/05/1997 | EP0693987B1 Rock percussion mechanism |
| 03/04/1997 | US5607022 To be used for breaking up a surface |
| 02/26/1997 | EP0759116A1 Reverse percussion device |
| 02/25/1997 | US5605197 Valve assembly for a fluid-activated, percussive paving breaker |
| 02/13/1997 | WO1997004926A1 A device performing hammering by means of hydraulic pressure |
| 01/23/1997 | WO1997002386A1 Hydraulic roller-compactor |
| 01/23/1997 | WO1997002385A1 Working machine |
| 01/23/1997 | WO1997002113A1 Pneumatic impact tool |
| 01/14/1997 | US5592866 For converting longitudinal reciprocating motion to longitudinal motion |
| 01/09/1997 | WO1997000754A1 Method and tool for removing a metallic plug from a tube |
| 01/08/1997 | EP0752297A2 Hydraulic percussion hammer |
| 12/24/1996 | US5586606 System for lubricating and reciprocating a piston in a fluid-activated, percussive paving breaker |
| 12/19/1996 | DE19621057A1 Electric hammer or hammer drill |
| 12/11/1996 | EP0746449A1 Valve arrangement in compressed air driven motors |
| 12/10/1996 | US5582257 System for lubricating and reciprocating a piston in a fluid-activated, percussive paving breaker |
| 11/28/1996 | WO1996037345A1 A method and drilling apparatus to adjust the shape of a stroke pulse to be transmitted to the drill bit |
| 11/26/1996 | CA2139677C Hydraulically powered repetitive impact hammer |
| 11/12/1996 | US5573073 Compressed fluid operated tool with fluid metering device |
| 10/30/1996 | EP0739691A1 Apparatus for adjusting the stroke of a fluid-actuated percussion device |
| 10/17/1996 | WO1996032228A1 Vibration generating device |
| 10/16/1996 | EP0737550A1 Impact hammer |
| 10/16/1996 | EP0646056B1 Process and device for actuating a percussive tool by means of compressed air |
| 09/18/1996 | CN2235359Y Pneumatic tool with vacuum chamber |
| 09/17/1996 | US5556649 Device for removing runners from molded products |
| 09/11/1996 | EP0706604A4 Impact hammer |
| 09/05/1996 | DE19507348A1 Method of controlling work-rate of hydraulic crushing hammer |
| 08/28/1996 | CN1129965A Impact hammer |
| 08/27/1996 | US5549031 Device for distributing oil under pressure and hydraulic hammer provided with said device |
| 08/22/1996 | WO1996025273A1 Method and pressure fluid system for variable exertion of power |
| 08/21/1996 | CN1129419A Impacting hammer driven by explosive |
| 07/31/1996 | EP0723492A1 Percussion element |
| 07/09/1996 | US5533579 Shock preventive pneumatic tool as automatically shut off under no load condition |
| 07/02/1996 | US5531279 Sensor impulse unit |
| 06/27/1996 | WO1996019324A1 Water driven hammer device |
| 06/27/1996 | WO1996019323A1 Hydraulic percussive device |
| 06/27/1996 | CA2208012A1 Water driven hammer device |
| 06/12/1996 | EP0715932A1 Method and apparatus for adjusting the stroke of a non-compressible fluid-actuated percussion device |
| 06/12/1996 | CN1124473A Rock percussion mechanism |
| 06/11/1996 | US5524715 Throttle lever system for a fluid-activated, percussive paving breaker |
| 06/11/1996 | US5524714 System for lubricating and reciprocating a piston in a fluid-activated, percussive paving breaker |
| 06/05/1996 | EP0714340A1 Explosive actuated battering ram |
| 05/30/1996 | DE4441635A1 Impactor for delivery of sharp blows to esp. doors and explosives detonators |
| 05/28/1996 | US5520254 Fluid-actuated impact hammer |
| 05/22/1996 | EP0712461A1 Rotary piston driving mechanism |
| 05/14/1996 | US5515930 Handheld pneumatic power tool apparatus |
| 04/25/1996 | WO1996011775A1 Valve arrangement in a hydraulic percussive rock drill |
| 04/17/1996 | EP0706604A1 Impact hammer |
| 04/03/1996 | CN1031473C Successive hole boring machine |
| 03/27/1996 | EP0703345A2 Boring ram |
| 03/06/1996 | EP0580816B1 A power tool having selectable inlet location |
| 02/29/1996 | WO1996005944A1 Percussion element |
| 02/27/1996 | CA2069184C Hydraulic impact apparatus |
| 02/20/1996 | US5492065 Plastic cartridge for a firing device, particularly a bolt gun |
| 02/15/1996 | DE4424079C1 Hydraulic striker hammer mechanism |
| 01/31/1996 | EP0693987A1 Rock percussion mechanism |
| 01/23/1996 | US5485887 For surgical use |
| 01/18/1996 | DE4424080C1 Hydraulic striker hammer fixed to drill rod for earth drilling |
| 01/17/1996 | EP0692345A1 Device for distributing oil under pressure and hydraulic hammer provided with said device |
| 01/17/1996 | EP0543806B1 Hydraulic down-the-hole rock drill |
| 01/11/1996 | DE4424081A1 Hydraulic impact hammer for earth boring operations |
| 01/11/1996 | DE4424078A1 Hydraulic hammer to which boring rod for ground drilling operations can be attached |
| 01/02/1996 | US5479996 Rock drilling device with recoil damper |
| 12/27/1995 | EP0688636A1 Hydraulic percussion hammer |
| 12/27/1995 | CN2215969Y 小型液压锤 Small Hydraulic Hammer |
| 12/26/1995 | US5477932 Impact device |
| 12/20/1995 | EP0687340A1 Pressure reversing valve for percussive drilling apparatus |
| 12/06/1995 | EP0685301A1 Hydraulic percussive device with infinitely variable number of impacts and impact energy |