Patents
Sitemap › B25 - Hand tools; Portable power-driven tools; Handles for hand implements; Workshop equipment; Manipulators › B25D - Percussive tools › B25D 9 - Portable percussive tools with fluid-pressure drive, e.g. having several percussive tool bits operated simultaneously
Patents for B25D 9 - Portable percussive tools with fluid-pressure drive, e.g. having several percussive tool bits operated simultaneously (2,753)
10/1999
10/27/1999EP0723492B1 Percussion element
10/26/1999US5971083 Pressure fluid operated impact mechanism
10/06/1999EP0947294A2 Hydraulically operated impact device
10/06/1999EP0947293A2 Hydraulically operated impact device
10/06/1999EP0946338A1 Method for adjusting drilling of drilling machine and rock drill
10/06/1999CN1045407C Nailing tool operated by powder
10/05/1999US5960893 Fluid-powered percussion tool
09/1999
09/29/1999CN2340571Y Pneumatic shock hammer
09/23/1999WO1999047313A1 Method and apparatus for controlling drilling of rock drill
09/23/1999DE19812510A1 Hydro percussive jackhammer with pressure and return lines
09/01/1999CN1044878C Plastic powder drum used in firing equipment especially bolt driver
08/1999
08/31/1999US5944120 Hydraulic hammer assembly having low vibration characteristics
08/31/1999US5944118 Pneumatic impact breaker
08/26/1999DE19810088C1 Hammer and boring drill
08/25/1999CN2334548Y 液压锤 Hydraulic Hammer
08/11/1999EP0934804A2 Fluid driven percussion device
08/11/1999EP0759116A4 Reverse percussion device
08/05/1999WO1999038655A1 Fluid actuated tool
08/04/1999EP0933169A2 Fluid driven percussion device
08/03/1999US5930899 Molding and emblem removal tool
07/1999
07/21/1999EP0930476A1 Method for opening and closing a tapping hole of a metallurgical vessel and hammer device, especially for carrying out this method
07/13/1999US5921327 Pneumatic impact tool having an integrally formed one-piece housing
06/1999
06/30/1999EP0785845B1 Valve arrangement in a hydraulic percussive rock drill
06/30/1999CN2326395Y Hydraulic pick
06/02/1999EP0919339A1 Hydraulically operated breaker with lost-motion prevention device
05/1999
05/12/1999CN2318004Y New control valve group for pneumatic rock drill
04/1999
04/28/1999EP0910317A1 Surgical instrument for mechanical removal of bone cement, and process for production of shock waves
04/27/1999US5896937 Buffer mechanism of hydraulic impact apparatus
04/21/1999CN2314903Y Trigger device for nail firing gun
04/13/1999US5893419 Hydraulic impact tool
04/13/1999US5893317 Pneumatic beater
04/07/1999EP0906810A1 Pressure fluid operated impact mechanism
04/06/1999US5890548 Hydraulic percussion hammer
03/1999
03/30/1999US5887665 Striking element
03/23/1999US5884713 Vibration generating apparatus
03/04/1999WO1999010659A1 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
03/04/1999WO1999010131A1 Power tool
03/02/1999US5875857 Accumulator charging system
02/1999
02/04/1999WO1999004937A1 Impacting device for releasing blocked objects by impact
02/04/1999WO1999004936A1 Hydraulic percussion device
02/04/1999DE19731732A1 Schlagvorrichtung zum Freischlagen festgeklemmter Gegenstände Impact device for releasing Beat clamped objects
02/03/1999CN1206647A Twin lobe impact mechanism
01/1999
01/19/1999US5860481 Fluid-operated striker assembly with automatic stroke length variation
12/1998
12/23/1998EP0885695A2 Device for reversing the pressure on a piston
12/23/1998EP0885694A1 Hydraulic hammer having improved seal ring
12/23/1998EP0885092A1 A device performing hammering by means of hydraulic pressure
12/23/1998CN2301302Y High wind pressure impacter
11/1998
11/24/1998CA2118327C Impact device
10/1998
10/27/1998US5826482 Hydraulic actuator
10/22/1998WO1998046398A1 Hydraulic cylinder and a demolition hammer controlled thereby
10/07/1998EP0868263A1 A piston construction for an axial bearing of a drilling machine
10/01/1998WO1998042481A1 Arrangement in rock drill and method of controlling rock drilling
10/01/1998CA2285971A1 Arrangement in rock drill and method of controlling rock drilling
09/1998
09/15/1998US5806610 Apparatus for generating impacts
09/15/1998US5806608 Air-driven post driver
09/15/1998US5806453 For waterborne craft
09/15/1998US5806404 Rotary piston driving mechanism
09/09/1998CN2290454Y Pneunatic tool having reciprocating linear movement
09/09/1998CN2290453Y Pneumatic chipping hammer
09/02/1998CN2289648Y Piston rod distribution type pneumatic impact mechanism
08/1998
08/18/1998US5794717 Rock drill percussion mechanism
08/05/1998EP0856637A1 Shock-absorbing mechanism for hydraulic hammering device
08/05/1998CN2287073Y Impulse hammer
08/05/1998CN1189872A 工作机 Working machine
08/05/1998CN1189871A Hydraulic roller-compactor
08/04/1998US5787995 Water driven hammer device
07/1998
07/23/1998WO1998031509A1 Fluid operated hammer
07/22/1998EP0854013A1 Tool for percussion apparatus
07/15/1998EP0852969A2 Pneumatic needle gun
07/07/1998US5775441 Power driven striking tool
07/07/1998US5775439 Method of cooling an impulse tool
07/07/1998US5775196 Valve arrangement in compressed air driven motors
06/1998
06/24/1998EP0849005A1 Pneumatic knocker
06/23/1998US5769620 Percussion mechanism for a tool working by percussion or rotary percussion
06/23/1998US5769172 Power tool
06/17/1998EP0847836A1 Percussive tool with fluid pressure drive
06/03/1998CN2282967Y Pneumatic percussive mechanism with locking valve
05/1998
05/26/1998US5755294 Abrasion-resistant hydraulic hammer with low noise level
05/19/1998US5752571 Apparatus for generating impacts
05/12/1998US5749421 Pneumatic impact breaker
05/06/1998EP0839613A1 Vibration generating device
05/06/1998CN1181033A Vibration generating device
04/1998
04/29/1998EP0838555A1 Hydraulic roller-compactor
04/29/1998EP0838554A1 Working machine
04/22/1998EP0837214A2 Percussive drill
04/22/1998EP0836545A1 Pneumatic impact tool
04/22/1998CN2279256Y Piston rod distributing pneumatic impact mechanism
03/1998
03/19/1998WO1998003309A3 Power tool
03/17/1998US5727639 Pile driving hammer improvement
03/11/1998EP0827813A2 Hydraulically actuated mechanism with automatic stroke change
03/05/1998WO1998008657A1 A control valve apparatus
03/05/1998CA2263380A1 A control valve apparatus
02/1998
02/17/1998US5718297 Hydraulic impact hammer
02/05/1998WO1998004387A1 Hydraulically operated breaker with lost-motion prevention device
02/04/1998EP0822034A2 Method of cooling a tool
01/1998
01/29/1998WO1998003312A1 Vibration generation apparatus
01/29/1998WO1998003309A2 Power tool
01/28/1998CN1171320A Energy-accumulating impact mechanism
01/07/1998CN1169689A Valve arrangement in hydraulic percussive rock drill
12/1997
12/24/1997WO1997048882A1 Hydraulic percussion mechanism
1 ... 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28