| 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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| 11/11/1993 | WO1993022106A1 Hydraulic breaking hammer |
| 11/09/1993 | US5259465 Filter for a pneumatic tool |
| 11/09/1993 | US5259464 Percussion mechanism for a drill rod unit |
| 11/09/1993 | US5259462 Soft mount air distributor |
| 10/28/1993 | WO1993020981A1 Pneumatic instrument |
| 10/14/1993 | WO1993019899A1 Improvements in pneumatic powertools |
| 10/13/1993 | EP0565500A1 Rock drilling device |
| 09/29/1993 | EP0429475B1 Hammer drill or concrete breaker |
| 09/16/1993 | WO1993017835A1 Pressure medium operated impact mechanism |
| 09/08/1993 | EP0558573A1 Method for securing and adjusting the strength of blow of a hammer, application of a hammer in tunnel drilling and hammer |
| 08/19/1993 | DE4143418A1 Pneumatic type hammer unit |
| 08/18/1993 | EP0555584A1 Pneumatically driven reverse impact device |
| 08/11/1993 | CA2080859A1 Pneumatically driven reverse impact device |
| 07/22/1993 | DE4227065A1 Hydropneumatic hammer drill for mining and road construction - has stepped diameter striking piston which divides cylinder into four chambers and permits short passages between valve and cylinder |
| 07/15/1993 | DE4200574A1 Sleeve-valve-controlled pneumatic in-hole impact drill - has sleeve valve tripped by movement of striking piston to allow complete filling of both working chambers with compressed air. |
| 06/30/1993 | EP0548098A1 Knife with blade quickly movable in relation to the handle. |
| 06/29/1993 | US5222425 Cyclic hydraulic actuator |
| 06/22/1993 | US5220860 Diaphragm valve for percussive apparatus |
| 06/02/1993 | EP0543806A1 Hydraulic down-the-hole rock drill. |
| 05/29/1993 | CA2083931A1 Pneumatic tool |
| 05/27/1993 | WO1993009919A1 Pneumatic instrument |
| 05/25/1993 | US5213247 Internal combustion powered tool for driving fastening elements |
| 05/18/1993 | US5210918 For removing a plug from a tube |
| 04/29/1993 | DE4134956A1 Drucklufthammer Drucklufthammer |
| 04/24/1993 | WO1993008364A1 A pneumatic hammer |
| 04/24/1993 | CA2097068A1 Pneumatic hammer |
| 04/06/1993 | US5199627 Self powered magazine hammer |
| 04/06/1993 | US5199504 High efficiency pneumatic impacting mechanism with a plunger valve |
| 03/09/1993 | US5191825 Low-impact air cylinder |
| 02/24/1993 | EP0266408B1 An impact apparatus |
| 02/17/1993 | EP0527395A2 Hydraulic striking device |
| 02/09/1993 | CA2075403A1 Hydraulic striking device |
| 02/02/1993 | US5183121 Submersible pneumatic drilling unit |
| 01/26/1993 | US5181495 Internal combustion powered device for setting fastening elements |
| 01/19/1993 | US5180019 Power tool having selectable inlet location |
| 01/14/1993 | DE4134918C1 Deep-hole hammer for use in drilling - includes control edges on movable sliders which move so edge is in pressurised cylinder chamber |
| 12/30/1992 | CN1019650B Device for hammering fastening elements into hard material |
| 12/29/1992 | US5174387 Method and apparatus for adapting the operational behavior of a percussion mechanism to the hardness of material that is being pounded by the percussion mechanism |
| 12/02/1992 | EP0516561A1 Hydraulic impact apparatus |
| 11/17/1992 | US5163519 Pneumatically driven reverse impact device |
| 11/10/1992 | US5161624 Tool for driving fastening elements into hard receiving materials |
| 10/29/1992 | WO1992018290A1 A power tool having selectable inlet location |
| 10/28/1992 | EP0511133A1 Device for marking by micro-percussion |
| 10/28/1992 | EP0510416A2 Percussion mechanism for drill string |
| 10/14/1992 | EP0507856A1 Hydraulically powered repetitive impact hammer |
| 10/06/1992 | US5152352 Pneumatic percussion tool, especially for the preparation of bones |
| 09/29/1992 | CA1308094C Apparatus for reflex-percussive cutting of concrete etc. |
| 09/16/1992 | CN1018253B Hydraulic impact tool |
| 08/20/1992 | WO1992013682A1 Strike-action pneumatic device for trench-free replacing of pipelines |
| 08/13/1992 | DE4104015A1 Hydraulic hammer for breaking masonry etc. - has elastic sealing diaphragm for working chamber supplied with clear water |
| 08/06/1992 | WO1992012828A1 One-stroke pneumatic device |
| 08/04/1992 | US5134989 Hydraulic breaker |
| 07/22/1992 | CN2110556U Hand electric percussive tool |
| 07/14/1992 | US5129466 Hydraulically operated striking mechanism |
| 06/16/1992 | US5121802 Method and arrangement for controlling a rock drilling apparatus |
| 06/11/1992 | WO1992009788A1 Method for securing and adjusting the strength of blow of a hammer, application of a hammer in tunnel drilling and hammer |
| 06/09/1992 | US5119667 Use on auto body surfaces |
| 06/03/1992 | CN1061553A Apparatus for driving insueation board into brickwork |
| 06/02/1992 | US5117923 Hydraulic jackhammer |
| 06/02/1992 | US5117921 Hydraulically operated hammer drill |
| 05/27/1992 | EP0486898A1 Method and device for adjustment of working caracteristics of an impact mechanism to the hardness of the material to be destroyed |
| 05/26/1992 | US5115844 Apparatus for injecting glue in joints and hair checks of wood, especially for gluing loose knots in wooden boards |
| 05/19/1992 | US5113950 For percussive tools, a housing, a pneumatic distributor, and a hammer piston means therefor |
| 05/19/1992 | CA1300876C Tractor-controlled hammer assembly |
| 05/13/1992 | EP0484672A1 Submersible pneumatic drilling unit |
| 05/12/1992 | US5111890 Hammer drill |
| 05/10/1992 | CA2054925A1 Submersible pneumatic drilling unit |
| 04/28/1992 | US5108400 Striking tool for surgical instruments |
| 04/16/1992 | DE4032203A1 Portable combustion driven nail driving gun - has two section casing which can be moved axially to change vol. of combustion chamber |
| 04/16/1992 | DE4032201A1 Portable combustion driven nail driving gun - is safeguard by locking device which prevents ignition of fuel |
| 04/15/1992 | CN2101564U Impulsing device |
| 04/07/1992 | US5102200 Impact ripper apparatus |
| 03/25/1992 | EP0477067A1 High efficiency pneumatic impacting mechanism with a plunger valve |
| 03/24/1992 | CA1297866C Arrangement for the axial bearing of a drilling machine |
| 03/19/1992 | WO1992004162A1 Knife with blade quickly movable in relation to the handle |
| 03/18/1992 | EP0475932A2 Device for impacting isolation panels in masonry |
| 03/18/1992 | EP0475171A2 Hydraulically operated percussion mechanism |
| 03/12/1992 | DE4028579A1 Messer mit relativ zum griff bewegter klinge Knife with handle relative to the moving blade |
| 03/04/1992 | EP0472982A2 Hydraulically operated impact drilling device, especially for boltdrilling |
| 02/26/1992 | CN1015611B Pneumatic pick with motive flexible axle air pipeline |
| 02/20/1992 | DE4131070A1 Hydraulically-driven drill hammer - has control valve sliding coaxially in striker piston |
| 02/11/1992 | CA1295533C Process for automatic control of percussion parameters of the striking pistonof an compressible pressurized fluid type apparatus and said apparatus |
| 02/04/1992 | US5085126 Pneumatic percussion tool with relatively movable head valves |
| 01/23/1992 | WO1992001138A1 Hydraulic down-the-hole rock drill |
| 01/21/1992 | US5082067 Apparatus with two end positions generating a reciprocating motion |
| 01/21/1992 | US5082066 Torque impulse delivering power tool |
| 01/15/1992 | EP0465864A1 Drill hammer control valve |
| 01/14/1992 | US5080179 Down the hole hammer equipment |
| 12/31/1991 | CA1293673C Control system for an impact ripper |
| 12/31/1991 | CA1293657C Impacting mechanism |
| 12/18/1991 | EP0461565A1 Method and device for the determination of characteristic features of an impact motor |
| 12/12/1991 | WO1991019076A1 Impact ripper apparatus |
| 12/04/1991 | CN2089865U Impactor |
| 11/27/1991 | EP0458767A2 Steering mechanism for a subsoil boring apparatus |
| 11/27/1991 | EP0457963A2 Device for applying glue to grooves and hairline cracks in woods, particularly for gluing loose knots in planks |
| 11/27/1991 | CN1014916B Control system for impact ripper |
| 11/26/1991 | CA2036528A1 Steering mechanism for a subsoil boring apparatus |
| 11/21/1991 | EP0457251A1 Improvements to the manufacture of hydraulic hammers |
| 11/21/1991 | DE4015389A1 Tool for removing dents from sheet metal - incorporates two pivoted arms forming anvil and hammer |
| 11/19/1991 | US5066070 Apparatus for reflex-percussive cutting of concrete etc. |