Patent application number | Description | Published |
20080283261 | Hand-Held Power Tool with a Vibration-Damped Handle - The invention relates to a hand tool machine ( | 11-20-2008 |
20090145619 | PERCUSSION MECHANISM FOR A REPETITIVELY HAMMERING HAND POWER TOOL - A percussion mechanism for a repetitively hammering hand power tool in the form of a rotary hammer has a striker movable axially forward and backward in a guide barrel and imparting impacts directly and without any intermediate parts to an end section of a tool bit that is insertable into the hand power tool, a device that exerts pressure on the striker, by which the striker is capable of being set into a forward motion in the direction of the tool bit, a blocking element, with which the striker is blockable in its forward motion, and the striking frequency of the striker is adjustable by controlling the blocking time of the blocking element, so that the striking frequency of the striker depends on how long the blocking element blocks the forward motion of the striker. | 06-11-2009 |
20090200054 | Power tool with a rotating and/or hammering drive mechanism - A handheld power tool has a housing, a tool receptacle, a motor having a motor shaft, an intermediate shaft, an element for transmitting a rotation of the motor shaft to a rotary motion of the intermediate shaft, a drive mechanism for a tool insertable into the tool receptacle, the drive mechanism being provided with an element for converting the rotary motion of the intermediate shaft into a rotary motion of the tool receptacle and an element for converting the rotary motion into the intermediate shaft into a hammering motion of the tool receptacle, wherein the motor shaft is coaxial with the intermediate shaft, and there is an element for coupling the motor shaft to the intermediate shaft. | 08-13-2009 |
20090266571 | HAND-GUIDED POWER TOOL WITH A POWER TRAIN AND A DECOUPLING DEVICE - The invention relates to a manual machine tool having a drivetrain ( | 10-29-2009 |
20090266572 | HAND-HELD POWER TOOL, IN PARTICULAR A ROTARY HAMMER AND/OR CHISEL HAMMER - The invention relates to a hand power tool, in particular a drill hammer and/or chipping hammer, comprising a hammer unit ( | 10-29-2009 |
20090294144 | Hand-held power tool - A hand-held power tool has a main element; a main handle fastened to the main element, the main handle being supported such that the main handle is movable relative to the main element, the main element including a tool fitting that defines a tool axis and the center of gravity that defines a normal direction oriented perpendicular to the tool axis and pointing toward the center of gravity, the main element being moved out of a stationary position toward the main handle so that a portion of at least 10% by weight of the main element is guided with a movement component in the normal direction along a trajectory. | 12-03-2009 |
20100025062 | HANDHELD POWER TOOL WITH VIBRATION-DAMPED HANDLE - The invention is based on a portable power tool having a vibration-damped handle ( | 02-04-2010 |
20100051303 | HAND-HELD POWER TOOL - The invention relates to a hand-held power tool, in particular a hammer drill which has a hammer drive, a rotary drive, a switching device, and a main output element. The switching device has a slide mechanism, which is designed for switching between different operating modes. According to the invention, the slide mechanism has at least one coupling element, which in at least one operating mode is directly coupled to a coupling element, the latter being rotationally fixed to the main output element. | 03-04-2010 |
20100270046 | SWASH DRIVE OF A HAND-HELD POWER TOOL - The invention relates to a wobble drive of a hand-held machine tool, particularly a drilling or chipping hammer, having a drive shaft, a wobble bearing disposed on the drive shaft, and a wobble plate supported on the wobble bearing. At least two wobble fingers having wobble finger axes being provided on the wobble plate. The invention provides that the axes of the wobble fingers form an angle different from 180°. | 10-28-2010 |
20110024149 | HAND-HELD POWER TOOL - The invention relates to a hand-held power tool, especially a rotary hammer and/or chisel hammer The hand-held power tool is provided with a vibration dampening unit having a first absorber mass unit with a first vibration dampening direction and at least one second absorber mass unit with a second vibration dampening direction. The hand-held power tool in particular has the first vibration dampening direction of the first absorber mass unit disposed as substantially parallel to the second vibration dampening direction of the second absorber mass unit. | 02-03-2011 |
20110114345 | HANDHELD POWER TOOL DEVICE - The invention is based on a handheld power tool device, having at least one safety mechanism, which intervenes in an uncontrolled blocking situation, and which has a sensor unit. It is proposed that the sensor unit is provided for directly detecting at least one orientation parameter of a handheld power tool. | 05-19-2011 |
20110139471 | METHOD FOR OPERATING A POWER TOOL HAVING A CLUTCH DEVICE - The invention relates to a method for operating power tool, particularly an electrically driven hand power tool, having at least one tool drive shaft for directly or indirectly rotationally driving a tool insert. The tool insert is received in a tool holder releasably connected to the tool drive shaft. The tool drive shaft can be coupled to a drive device via a clutch device. The clutch device is provided with at least two different limit torques, which are selectable by an operator. When the tool insert and/or the tool holder is changed out, the clutch device is reset to a lower limit torque of the at least two different limit torques, particularly the lowest possible limit torque. | 06-16-2011 |
20110139473 | POWER TOOL HAVING CLUTCH DEVICE - The invention relates to a power tool, in particular an electrically operable hand-held power tool, having at least one tool drive shaft for direct or indirect rotary drive of an insert bit, with the insert bit being accommodated in a tool holder that is connected or detachably connected to the tool drive shaft, particularly in a replaceable fashion. At least one drive device and at least one clutch device that couples the at least one drive device to the at least one tool drive shaft is provided which has at least two different, user-selectable, limit torques. An actuating device is provided that makes it possible, with a replacement of the insert bit and/or a replacement of the tool holder, to reset the clutch device to a lower limit torque, preferably to the lowest possible limit torque. | 06-16-2011 |
20130213682 | Swash Drive of a Hand-Held Power Tool - The invention relates to a swash drive ( | 08-22-2013 |
20130333908 | TRANSMISSION HOUSING - A transmission housing, in particular for a hammer drill and/or percussion hammer, for accommodating a percussion mechanism includes at least one housing part and at least one cover part adjacent to the housing part. The cover part is configured to close off the transmission housing in a direction opposite to a percussion direction. | 12-19-2013 |