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)
11/1991
11/19/1991US5065824 Hydraulically powered repetitive impact hammer
11/19/1991US5065823 Extraction device for pneumatically actuated drilling tools
11/19/1991CA1292095C Manual recycler for detonating impact tool
11/12/1991US5064005 Impact hammer and control arrangement therefor
10/1991
10/31/1991WO1991017023A1 Impact hammer and control arrangement therefor
10/31/1991CA2057883A1 Impact hammer and control arrangement therefor
10/29/1991US5060734 Seawater hydraulic rock drill
10/23/1991EP0452543A1 Pneumatic percussion tool
10/22/1991CA1290997C Pneumatic tool
10/22/1991CA1290996C Single-blow pneumatic percussive tool
10/15/1991US5056606 Damped hammer drill
10/08/1991US5054565 Steering mechanism for a subsoil boring apparatus
10/08/1991CA1290319C Hydraulically powered rotary percussive machines
10/02/1991EP0449766A1 Tool for beating down of fasteners in hard material
10/02/1991CN1054929A Device for hammering fastening elements into hard material
10/01/1991US5052499 Pneumatic impact tool
10/01/1991CA1289849C Hydraulic distributor for a percussion mechanism actuated by an incompressible fluid under pressure
09/1991
09/26/1991DE4008750A1 Fixing device-driving tool - incorporates rotary drill and bolt-setting mechanism
09/25/1991EP0447552A1 Striking device
09/24/1991US5050689 Compressed air supply system of vibro-isolated tools
09/24/1991US5050687 Compression-vacuum action percussive machine
09/20/1991CA2038483A1 Tool for driving fastening elements into hard receiving materials
09/03/1991US5044398 Control valve for counterblow-tap hole-boring machine
09/03/1991CA1288317C Device controlling the piston of a pressurized incompressible fluid activated impact apparatus and process thereof
08/1991
08/20/1991US5040618 Pneumatic drill
08/14/1991EP0441758A2 Torque impulse delivering power tool
08/14/1991DE4003814A1 Hydraulic hand hammer - has sleeve located in zone of movement of striker piston and reduces flow resistance of working medium reaching return stroke chamber
08/13/1991US5038668 Hydraulic striking mechanism
07/1991
07/25/1991WO1991010542A1 Pneumatic hammer
07/16/1991US5031505 Variable frequency control for percussion actuator
07/03/1991CN2080099U Plunger slide valve high efficienty pneumatic impact mechanism
07/03/1991CN2079998U Hydraulic crasher
06/1991
06/29/1991WO1991009709A1 Hydraulically powered repetitive impact hammer
06/13/1991DE4019016A1 Hydraulically operated percussion tool - has system to vary mode of operation according to hardness of material
06/11/1991US5022309 Piston
06/05/1991EP0429475A1 Hammer drill or concrete breaker.
05/1991
05/15/1991EP0427647A1 Pneumatic percussive apparatus with exchangeable worktool
05/15/1991EP0426928A1 Method to automatically adjust the functional parameters of a percussion apparatus
04/1991
04/24/1991EP0423121A1 An apparatus with two end positions generating a reciprocating motion.
04/17/1991EP0421994A1 Synchronized hydraulic hammer arrangement
03/1991
03/26/1991US5002136 Damped hammer drill
03/19/1991CA1281613C Control system for a multiple shank impact ripper
03/19/1991CA1281602C Single-blow pneumatic percussive tool
03/13/1991CN2072892U Energy storage impact controller
03/05/1991US4996907 Pneumatic knocking device
02/1991
02/21/1991WO1991001856A1 Pneumatically operated device for plastic deformation, in particular for punch marking
02/19/1991US4993504 Device for efficient energy transfer and damping of impact drilling machines
02/12/1991US4991664 Compression-vacuum percussive action machine
02/06/1991EP0411249A1 Pneumatic device for plastic deformation, in particular for impact marking
01/1991
01/24/1991WO1991000952A1 Striking device
01/16/1991EP0408517A2 Control device for slide valves in oil-operated hammers
12/1990
12/04/1990US4974494 Knocking device with autocontrol
11/1990
11/22/1990DE4010217A1 Impulse percussion tool - comprises hollow cylinder and spring-loaded piston activated by spark discharge in dielectric solution
10/1990
10/31/1990EP0394765A1 Hydraulic percussion mechanism
10/30/1990CA1275601C Percussion device
10/25/1990DE3913426A1 Maschinenhammer Steam hammer
09/1990
09/26/1990EP0389454A1 Device in impact machines
09/26/1990EP0388498A1 Hydraulic valve system for a pile driver hammer
09/26/1990EP0388497A1 Process for operating a free-fall hydraulic hammer, and controlling equipment therefor
09/26/1990CN1045551A 液压冲击工具 Hydraulic impact tools
09/18/1990US4957171 Pneumatic drill
08/1990
08/28/1990US4951757 Hydraulic striking device with impact frequency control
08/16/1990EP0381921A2 Control valve for a counter-blow tapping-hole drill
08/14/1990US4947941 Single-stroke pneumatic apparatus
08/07/1990US4945998 Hydraulic impact tool
08/07/1990US4945815 Pneumatic type of reciprocating movement device
08/01/1990EP0214064B1 Method of controlling the movement of the impacting piston of a non-compressible fluid-actuated percussion device, and device therefor
07/1990
07/18/1990EP0378045A1 Hydraulic drill hammer
06/1990
06/26/1990US4936393 Pneumatic tool
06/19/1990US4934465 Arrangement for the axial bearing of a drilling machine
06/14/1990WO1990006212A1 Single-stroke pneumatic device
06/05/1990US4930584 Cracking device
06/05/1990CA2004648A1 Single-impact pneumatic hammer
05/1990
05/16/1990CN1042215A Air spring percussive tool
05/01/1990US4921053 Vibro-isolation of connections of structural units of hand tools
04/1990
04/05/1990WO1990003252A1 Compression-vacuum percussion device
03/1990
03/20/1990US4909419 Percussion tool
03/06/1990US4905634 Portable power tool with improved combustion chamber charging means
03/06/1990CA1266416A1 Hydraulic breaker
02/1990
02/22/1990WO1990001612A1 Compression-vacuum percussion machine
02/22/1990WO1990001400A1 Hammer drill or concrete breaker
02/21/1990EP0354943A1 Percussion tool for surgical instruments.
02/13/1990US4900093 Impact ripper and control
02/13/1990US4899836 Hydraulic percussion instrument and method of operating same
01/1990
01/31/1990EP0352742A2 Hydraulic impact tool
01/11/1990WO1990000106A1 Synchronized hydraulic hammer arrangement
12/1989
12/13/1989EP0345484A2 Knocker with self-control
12/13/1989EP0345481A2 Pneumatic knocker
12/05/1989US4884642 Percussive action machine
10/1989
10/11/1989EP0336261A2 Vibro-isolation of connections of structural units of hand tools
10/11/1989EP0335994A1 Hydraulic impact tool
10/05/1989WO1989009117A1 Impacting mechanism
10/04/1989EP0335329A2 Pneumatic impact tool
10/04/1989EP0335328A2 Compressed-air supply system of vibro-isolated tools
09/1989
09/19/1989US4867252 Single-stroke pneumatic apparatus
09/12/1989CA1259232A1 Percussive tool
09/05/1989US4862972 Single-blow pneumatic percussive tool
08/1989
08/29/1989CA1258808A1 Hydraulic percussive machines
08/24/1989WO1989007690A1 Apparatus for reflex-percussive cutting of concrete etc.
08/24/1989WO1989007511A1 An apparatus with two end positions generating a reciprocating motion
1 ... 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28