| 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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| 09/20/2001 | US20010022229 Fluid operated percussion device |
| 09/20/2001 | US20010022227 Protective apparatus for preventing the infiltration of contaminants in a fluid-operated percussion device |
| 09/20/2001 | DE10013270A1 Fluid-driven hammer mechanism has striking piston made immobile if its movement exceeds certain setting |
| 09/20/2001 | DE10012916A1 Schutzvorrichtung zum Verhindern des Eindringens von Verunreinigungen an einem fluidbetriebenen Schlagwerk Protection device to prevent the ingress of contaminants in a fluid-operated percussion |
| 08/14/2001 | US6273199 Arrangement in rock drill and method of controlling rock drilling |
| 07/25/2001 | EP1117508A1 Pneumatic percussion power tool with pneumatic returning spring |
| 07/24/2001 | US6264660 Surgical instrument for mechanical removal of bone cement, and process for production of shock waves |
| 07/19/2001 | WO2000078510A3 Innovative oil-dynamic percussion machine working at constant hydraulic pressure |
| 07/12/2001 | US20010007628 Taper implant screw-fastening structure using taper implant with female threads forming drill for drilling insertion hole for taper implant and hammer for driving taper implant |
| 07/05/2001 | WO2001048350A1 Device for hydraulic power supply of a rotary apparatus for percussive drilling |
| 07/05/2001 | CA2394643A1 Device for hydraulic power supply of a rotary apparatus for percussive drilling |
| 07/03/2001 | CA2009378C Device in impact machines |
| 06/26/2001 | US6250401 Rotary impacting apparatus |
| 05/31/2001 | WO2001038046A1 Driver for power tools |
| 05/31/2001 | CA2389625A1 Driver for power tools |
| 05/29/2001 | US6237699 Rotary hammer |
| 05/24/2001 | US20010001423 Rotary hammer |
| 05/16/2001 | CN1065942C 冲击锤 Hammer |
| 05/09/2001 | EP0760732B1 Pneumatic impact breaker |
| 05/08/2001 | US6227309 Rotary hammer |
| 04/24/2001 | CA2202521C Valve arrangement in a hydraulic percussive rock drill |
| 04/11/2001 | EP1089854A1 Hammer device |
| 04/04/2001 | EP1088149A1 Percussive down-the-hole rock drilling hammer, and a piston used therein |
| 04/03/2001 | US6209659 Hand-held drill with a compressed air-operated hammer mechanism |
| 03/28/2001 | CN1288801A Multifunctional pneumatic rivetter |
| 02/27/2001 | US6192997 Pneumatic hammer with buffers |
| 02/20/2001 | CA2058659C Cyclic hydraulic actuator |
| 02/15/2001 | WO2001010607A1 Improved foundry deceleration apparatus |
| 02/13/2001 | US6186246 Method for adjusting drilling of drilling machine and rock drill |
| 02/07/2001 | CN1282651A Free piston type engine |
| 02/01/2001 | WO2001007188A1 Impact tool |
| 01/25/2001 | WO2001005558A1 Drilling hammer or impact hammer |
| 01/25/2001 | DE19933972A1 Bohr- oder Schlaghammer Drilling or hammer |
| 01/04/2001 | WO2001000368A2 Pneumatic piston percussive mechanism with a hollow percussion piston |
| 01/04/2001 | DE19929183A1 Luftfederschlagwerk mit hohlem Schlagkolben Pneumatic percussive tool with a hollow percussion piston |
| 01/03/2001 | EP1064123A1 Method and apparatus for controlling drilling of rock drill |
| 12/28/2000 | WO2000078510A2 Innovative oil-dynamic percussion machine working at constant hydraulic pressure |
| 12/19/2000 | US6161628 Pneumatic tool |
| 12/13/2000 | EP1058600A1 Fluid actuated tool |
| 12/13/2000 | CN1276751A Power tool |
| 12/06/2000 | CN2409021Y Hydraulic impactor |
| 12/05/2000 | US6155353 Impact tool |
| 11/29/2000 | EP1055489A2 Process for determing the operational life and state of a hydraulic impact assembly |
| 11/28/2000 | US6152245 Compressed-air-operated percussion mechanism |
| 11/28/2000 | US6152013 Hydraulically actuated breaker with lost-motion prevention device |
| 11/23/2000 | DE19923680A1 Verfahren zur Ermittlung der Betriebsdauer und des Einsatz-Zustands eines hydraulischen Schlagaggregats, insbesondere Hydraulikhammer, sowie Vorrichtung zur Durchführung des Verfahrens Method for determining the operating time and the use of state of a hydraulic percussion device, in particular hydraulic hammer, and device for carrying out the method |
| 11/16/2000 | WO2000067946A1 Automated apparatus for fracturing risers from castings within a mold |
| 11/15/2000 | EP1052294A1 Piercing apparatus |
| 11/08/2000 | EP0687340B1 Pressure reversing valve for percussive drilling apparatus |
| 10/31/2000 | US6138773 Foundry deceleration apparatus |
| 10/25/2000 | CN1270866A Rotary hammer |
| 10/24/2000 | US6135214 Impact absorbing fluid operated hammer |
| 10/03/2000 | US6126055 Explosive powder charge operated setting tool |
| 10/03/2000 | CA2013711C A method and an arrangement for controlling a rock drilling apparatus |
| 09/19/2000 | US6119795 Hydraulic hammer having improved seal ring |
| 09/12/2000 | US6116352 Drilling and/or percussion power tool |
| 09/05/2000 | US6112832 Method and apparatus for controlling a rock drill on the basis of sensed pressure pulses |
| 08/31/2000 | DE19908530A1 Driving in or out process for wedge fixing swage, using pneumatic or hydraulic ram |
| 08/30/2000 | CN1055886C Energy-accumulating impact mechanism |
| 08/22/2000 | US6105686 Pressure accumulator arrangement in connection with a hydraulically operated impact device, such as a breaking apparatus |
| 08/16/2000 | EP1027964A2 Rotary hammer |
| 08/16/2000 | EP1027963A2 Rotary hammer |
| 08/16/2000 | CN1262976A Rotary hammer |
| 08/09/2000 | EP1025960A1 Setting tool |
| 08/03/2000 | DE19903993A1 Setzgerät Setting tool |
| 07/20/2000 | WO2000041851A1 Impact absorbing fluid operated hammer |
| 07/05/2000 | CN1054095C Cartridge for explosively operated industrial tools |
| 06/28/2000 | EP1011931A1 A method and drilling apparatus to adjust the shape of a stroke pulse to be transmitted to the drill bit |
| 06/14/2000 | EP1008771A1 Taper piece, thread fastening construction using taper piece with female thread, formed drill for processing insertion hole for taper piece, and hammer for driving of taper piece |
| 06/14/2000 | EP1007288A1 Compressed-air-operated percussion mechanism |
| 06/14/2000 | CN2382497Y Impact device for pneumatic tool |
| 06/13/2000 | US6073706 Hydraulically operated impact device |
| 06/13/2000 | CA2121283C Explosive powder charge operated setting tool |
| 06/07/2000 | EP1005403A1 Power tool |
| 05/17/2000 | CN2378160Y Non-valve fluid-pressure percussive tool |
| 05/16/2000 | US6062322 Precussive down-the-hole rock drilling hammer |
| 05/10/2000 | EP0998376A1 Impacting device for releasing blocked objects by impact |
| 05/09/2000 | US6059162 Exhaust baffle and spring assisted reset and dampener for powder actuated tool |
| 05/03/2000 | CN1251794A Hand drill having compressed air shocker |
| 05/03/2000 | CN1251793A Exhaust buffer for explosive driving tools, spring aided repositioner and silencer |
| 05/02/2000 | US6056070 Hydraulic ramming apparatus |
| 04/27/2000 | DE19847687A1 Hammer drill or hammer tool with an air spring has a connecting opening to link the air spring zone with the ambient atmosphere on idle running for a smooth change between working and idle running modes |
| 04/20/2000 | DE19935890A1 Hit kinematic device for e.g. valve plug, valve tappet |
| 04/19/2000 | EP0993911A2 Powder actuated tool with exhaust baffle and method for baffling exhaust discharge from a powder actuated tool |
| 04/06/2000 | DE19843642A1 Luftfederschlagwerk mit Rückholluftfeder Pneumatic percussive tool with Rückholluftfeder |
| 03/30/2000 | WO2000016948A1 Pneumatic percussion power tool with pneumatic returning spring |
| 03/30/2000 | DE19843645C1 Air spring impactor for hammer drill has impact piston defining fluid chamber with drive piston in guide shell |
| 03/15/2000 | CN1247252A Percussion sport appts. |
| 02/29/2000 | US6029753 Increased efficiency percussion piston and method for operating same |
| 02/09/2000 | EP0978625A2 Percussive drill |
| 02/01/2000 | CA2161129C Rock drill percussion mechanism |
| 01/27/2000 | DE19832946A1 Handbohrgerät mit drucklufterregtem Schlagwerk Hand Drill with drucklufterregtem percussion |
| 01/26/2000 | EP0974428A2 Handheld drilling machine with compressed-air-operated percussion mechanism |
| 01/05/2000 | EP0746449B1 Valve arrangement in compressed air driven motors |
| 12/23/1999 | WO1999066167A1 Percussive down-the-hole rock drilling hammer and an arrangement used therein |
| 12/23/1999 | WO1999066166A1 Percussive down-the-hole rock drilling hammer, and a piston used therein |
| 11/16/1999 | US5984027 Engine-driven breaker |
| 11/10/1999 | CN1234759A Control valve apparatus |
| 11/09/1999 | US5979291 Hydraulically operated percussion hammer |
| 10/28/1999 | WO1999054094A1 Hammer device |