Patents
Sitemap › B25 - Hand tools; Portable power-driven tools; Handles for hand implements; Workshop equipment; Manipulators › B25D - Percussive tools › B25D 11 - Portable percussive tools with electromotor drive
Patents for B25D 11 - Portable percussive tools with electromotor drive (2,197)
05/1984
05/08/1984US4446931 Power driven hammer drill
05/02/1984EP0107629A1 An electrically driven hammer machine
05/02/1984EP0107628A1 A hand-held hammer tool
04/1984
04/27/1984EP0096029A4 Electrically driven impact tool.
04/17/1984US4442906 Percussive drills
03/1984
03/28/1984EP0104154A2 Hammer tool
03/13/1984US4436163 Arrangement for converting rotary motion to reciprocatory motion
02/1984
02/22/1984EP0101389A1 Process and device for the self-synchronised control of an electromagnetic hammer
02/14/1984US4431062 Rotating drive for impact hammer
01/1984
01/31/1984US4428439 Adjustable, portable, hand-held impactor
12/1983
12/21/1983EP0096029A1 Electrically driven impact tool
12/21/1983EP0016771B1 Hand mechanical tool
12/20/1983US4421180 Pile driver
11/1983
11/23/1983EP0094403A1 Rock breaking apparatus.
11/15/1983CA1156859A1 Hammer drill adapter
09/1983
09/27/1983CA1154284A1 Electric drilling machine
09/21/1983EP0089140A2 Synchronous vibratory impact hammer
08/1983
08/30/1983US4401167 Vibratory tool with a vibration proof mechanism for the handle thereof
06/1983
06/23/1983WO1983002082A1 Electrically driven impact tool and method of operating the same
06/09/1983WO1983001977A1 Rock breaking apparatus
04/1983
04/26/1983US4381037 Portable electric tool
04/13/1983EP0076768A1 Apparatus for driving and drawing piles, tubes, sheet pilings, stakes, etc.
01/1983
01/04/1983US4366869 Hammer drill
12/1982
12/22/1982EP0067682A1 Hand-held power tools including bearing supports for components undergoing linear movement
11/1982
11/30/1982CA1136446A1 Hammer drill
11/25/1982EP0058677A4 Impact device.
11/16/1982US4359109 Impactor drill tool
11/03/1982EP0063725A2 Boring and chiseling hammer
10/1982
10/12/1982US4353426 Percussive tools
09/1982
09/14/1982US4349074 Convertible rotary impact hammer drill
09/02/1982WO1982002813A1 Ripper with offset impacting means and slotted shank
09/01/1982EP0058677A1 Impact device.
08/1982
08/31/1982US4346768 Impact device with sinusoidal rotary-to-reciprocative converter
08/24/1982US4345768 Self pumping seal for a reciprocating member
08/17/1982CA1129682A1 Hammer drill or chipping hammer device
07/1982
07/27/1982CA1128384A1 Idling and air replenishing system for a reciprocating hammer mechanism
05/1982
05/26/1982EP0052507A1 Percussive drills
05/19/1982EP0051923A1 Portable power-operated drill
04/1982
04/28/1982EP0050192A1 Drill hammer
04/21/1982EP0049727A1 An apparatus for removing putty from window frames
04/20/1982US4325436 Hammer drill or chipping hammer device
03/1982
03/18/1982WO1982000747A1 Impacting rock breaker
03/09/1982US4318446 Linear motion impactor device
02/1982
02/18/1982WO1982000430A1 Impact device
01/1982
01/12/1982US4310055 Percussion hammer with a one piece striker
12/1981
12/15/1981CA1114249A1 Motor-driven hammer drill
12/10/1981WO1981003532A1 A recoil damper for a reciprocating member
12/10/1981WO1981003531A1 A recoil and positioning mechanism
12/08/1981US4304047 Impact chisel attachment
12/02/1981EP0040773A1 A recoil damper for a reciprocating member
12/02/1981EP0040772A1 A recoil and positioning mechanism
10/1981
10/13/1981US4294136 Crank gear with adjustable crank radius for motor driven working implements
09/1981
09/22/1981US4290492 Idling and air replenishing system for a reciprocating hammer mechanism
09/15/1981CA1108886A1 Linear motion impactor device
07/1981
07/28/1981US4280359 Rotary cam drive for impact tool
07/14/1981US4278295 Impacting rock breaker
07/07/1981US4276941 Hand-held power tool
05/1981
05/06/1981EP0028029A1 Portable electric tool
03/1981
03/24/1981US4257648 Non-resonant cyclic drive system employing rectification of the cyclic output
02/1981
02/17/1981CA1096016A1 Electro-mechanical vibrator
01/1981
01/06/1981US4243618 Method for forming retroreflective sheeting
12/1980
12/30/1980CA1092391A1 Drilling and driving device
12/09/1980US4237987 Percussive tool
12/02/1980US4236588 Hammer drill with a lockable tool holder
11/1980
11/25/1980CA1090216A1 Hammer drill with a lockable tool holder
11/25/1980CA1090169A1 Hammer tool
10/1980
10/15/1980EP0016771A1 Hand mechanical tool.
09/1980
09/16/1980US4222443 Motor-driven hammer drill
09/03/1980EP0014760A1 Idling and air replenishing system for a reciprocating hammer mechanism
08/1980
08/12/1980CA1083367A1 Power hammer
07/1980
07/29/1980US4215297 Electromagnetic percussion appliance
06/1980
06/03/1980CA1078681A1 Buffer spring for an impact tool
05/1980
05/27/1980US4205362 Apparatus for moving along or through a material
05/06/1980US4201269 Impact device with linear single acting air spring
02/1980
02/19/1980US4189011 Hammer drill
11/1979
11/29/1979WO1979001041A1 Hand mechanical tool
10/1979
10/16/1979US4171083 Drilling and driving device
10/16/1979US4171024 Power hammer
07/1979
07/03/1979CA1057603A1 Electropneumatic hammer
05/1979
05/29/1979US4156468 Housing for electric tools
12/1978
12/12/1978US4129187 Electro-mechanical vibrator
09/1978
09/05/1978US4111060 Drill attachment for converting rotary motion to reciprocatory motion
08/1978
08/01/1978US4103747 Buffer spring for an impact tool
07/1978
07/11/1978US4099580 Impact device with linear air spring
07/04/1978US4098351 Hammer tool
06/1978
06/20/1978US4095654 Impact device with multiple connecting rods and gearing
04/1978
04/04/1978US4082152 Cam mounting for an impact tool
04/04/1978US4082151 Cam mounting for an impact tool
02/1978
02/14/1978US4073348 Impact drilling tool
12/1977
12/27/1977US4064949 Electropneumatic hammer
06/1977
06/28/1977US4031763 Adjustable stroke length, reciprocating tools
06/21/1977US4030556 Miniature impact tool
04/1977
04/05/1977US4015671 Electric hammer
03/1977
03/29/1977US4014392 Stabilized piston-cylinder impact device
03/1976
03/16/1976US3943782 Power hammer
02/1976
02/24/1976US3939921 Method and device for damping the movement of a hammer piston
02/10/1976US3937286 Fence post driver
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