Entries |
Document | Title | Date |
20080196913 | Breaker Tool with Vibration Damped Handle Device - A breaker tool has a chassis carrying a motor, an impact mechanism operating in a certain working direction, an enclosure rigidly connected to the chassis and surrounding at least the motor, and a handle device including two handles protruding from opposite sides of the enclosure and are vibration damped relative to the chassis via swing arms, where the swing arms are arranged to accomplish a flexible parallel movement providing coupling between the chassis and the handle device. The handle device includes a bridge to which the handles are secured. The swing arms are pivotally connected to the bridge via first pivots and to the chassis via second pivots, where at least one of the first and second pivots is a torsion pivot that provides a limited torsion damped oscillation of the bridge relative to the chassis in a direction substantially parallel with the working direction. | 08-21-2008 |
20080202785 | Hand-held power tool - A hand-held power tool ( | 08-28-2008 |
20080223593 | HANDLE - Disclosed is a handle including a grip element and a fastening element situated on the grip element; the fastening element protrudes at least partway into the grip element and is guided in the grip element with a radial play. The handle is characterized by means of at least one damping element that is situated on the grip element so that it functions as a stop for limiting the radial play of the fastening element in the grip element. | 09-18-2008 |
20080223594 | Portable Power Tool - The invention relates to a portable power tool having a motor housing ( | 09-18-2008 |
20080264661 | Dual-character shock isolation structure and methodology - Dual-character shock-isolation structure, and associated methodology, for minimizing the transmission of shock through a connective interface existing between a pair of interconnected structures, such as between the handle of an impact-delivering tool and a user's hand and arm. The proposed structure includes kinetic-energy-to-heat cushioning structure, and twin-layer, facially releasably, interengaged shear-lock structure operatively joined to, and positioned in shock-transmission series with, the cushioning structure. | 10-30-2008 |
20080277130 | Handheld work apparatus - A handheld work apparatus has a housing ( | 11-13-2008 |
20080283261 | Hand-Held Power Tool with a Vibration-Damped Handle - The invention relates to a hand tool machine ( | 11-20-2008 |
20080289842 | WALK BEHIND POWER TOOL VIBRATION CONTROL HANDLE - Disclosed is a vibration dampening handle for power tools. It includes a frame member attached to the power tool itself, and a handle assembly, which is attached to the frame member via connection to resilient material attached to an isolator chassis assembly located at a vibration node point of the frame member. The vibration dampening handle may also include a height adjustment mechanism. | 11-27-2008 |
20090025950 | HAND-HELD POWER TOOL WITH A VIBRATION-DAMPED ROUNDED HANDLE - The invention relates to a hand machine tool ( | 01-29-2009 |
20090038818 | AUXILIARY HANDLE DEVICE - An auxiliary handle device, in particular for a hand-held power tool, has an auxiliary handle and a damping unit. The damping unit includes a rotation unit with at least one rotation element, which is provided to rotate about at least one rotation axis. | 02-12-2009 |
20090090529 | SHOCK DAMPENING POST DRIVER - A post driver having rotational handles and a dampening device adapted to isolate the hands and arms of the user from shock. | 04-09-2009 |
20090095497 | Hand-Guided Power Tool - A hand-guided power tool has a drive motor and a tool in driving connection with the drive motor. At least one handle is provided for guiding the power tool in operation. At least one antivibration element functionally connects the at least one handle and the drive motor. The at least one antivibration element has a coil spring and a guide, wherein the coil spring has an end connected to the guide. The coil spring has a first radial spacing relative to the guide in a first radial direction and has a second radial spacing relative to the guide in a second radial direction, wherein the second spacing is smaller than the first spacing or is zero. | 04-16-2009 |
20090188691 | HANDLE ASSEMBLY FOR POWER TOOL - A handle assembly for a power tool is disclosed. The handle assembly has a handle ( | 07-30-2009 |
20090236111 | HAMMER - A hammer comprising: a body; a tool holder mounted on the body for holding a cutting tool; a handle pivotally mounted on the body about an axis; a vibration dampener which connects between the handle and the body and which reduces the amount of angular vibrations transmitted from the body to the handle; a motor mounted within the body; a hammer mechanism mounted in the body, capable of being driven by the motor when the motor is activated, the hammer mechanism, when driven, imparting impacts onto a cutting tool | 09-24-2009 |
20090236112 | HAMMER - A hammer comprising: a body; a tool holder mounted on the body for holding a cutting tool; a handle, comprising a grip portion, pivotally mounted on the body about an axis of pivot; a first vibration dampener which connects between the handle and the body and which reduces the amount of angular vibrations transmitted from the body to the handle; a motor mounted within the body; a hammer mechanism mounted in the body, capable of being driven by the motor when the motor is activated, the hammer mechanism, when driven, imparting impacts onto a cutting tool when held by the tool holder; wherein at least the grip portion of the handle is also slideably mounted on the body so that the position of the grip portion can be linearly moved relative to the body; and there is further provided a second vibration dampener located between the grip portion and the body which reduces the amount of linear vibrations transmitted from the body to the grip portion. | 09-24-2009 |
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 |
20090272553 | HAND-HELD POWER TOOL WITH A VIBRATION-DAMPED HANDLE WITH A SWITCH - The invention relates to a machine tool ( | 11-05-2009 |
20090283282 | Electric hand-held power tool appliance - The invention relates to an electric hand-held power tool appliance, comprising a first housing part ( | 11-19-2009 |
20090283283 | VIBRATION-DAMPED HOLDER FOR ADDITIONAL HANDLE - A damper for mounting between a power tool, having an axis of vibration, and a handle. The damper includes a damping arrangement for damping impacts and a spacer. The spacer is dimensioned so that, when the damper is mounted to the power tool, a ratio of a first distance between the axis of vibration and the handle to a second distance between the axis of vibration and the damping arrangement is at least 2:1. Further, a handle having such a damper for a power tool, as well as the corresponding power tool having such a handle, are described. | 11-19-2009 |
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 |
20090314507 | Power tool - It is an object of the invention to provide a hand-held power tool in which both increased ease of operation and vibration-proof structure of a grip are given. Above-described object can be achieved by the claimed invention. The representative hand-held power tool according to the invention performs a predetermined operation on a workpiece by a tool bit disposed in a tip end region of a power tool body and driven by a motor. The power tool includes a grip, a connecting part, an elastic element, an electrical switch and an operating member. The connecting part connects the grip to the power tool body. The elastic element is disposed between the connecting part and the power tool body. The operating member is switched by a user between an energizing position and a de-energizing position. The operating member is retained in the position to which it is switched. The operating member is disposed in the connecting part in such a manner as to be slidable in a direction transverse to the longitudinal direction of the power tool body and to the extending direction of the grip. | 12-24-2009 |
20090321101 | Power tool - It is an object of the invention to provide a technique which contributes to reduced size of a vibration-proof handle for a hand-held power tool. A representative hand-held power tool includes a power tool body | 12-31-2009 |
20100012338 | Bush Cutter - According to an aspect of the present invention, there is provided a portable bush cutter including: a pole; a working part that is provided at one end of the pole; an engine part that drives the working part and that is provided at the other end of the pole; a drive shaft that connects the working part and the engine part; a maneuvering handle that is provided on an intermediate portion of the pole along a length direction thereof; and a vibration isolating member that is interposed between the maneuvering handle and the pole. | 01-21-2010 |
20100012339 | HANDLE DAMPING SYSTEM - A power tool, particularly a hammer drill, comprising; a body ( | 01-21-2010 |
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 |
20100038105 | Reciprocating Tool - A reciprocating tool ( | 02-18-2010 |
20100071925 | Hand-Held Power Tool - A hand-held power tool has a motor housing with drive motor and a grip housing with a longitudinal support and a forward grip. The motor housing and the grip housing are connected to one another by antivibration elements. The forward grip has a connecting end that is connected by a screw connection to the longitudinal support. The screw connection has at least one fastening screw that is positioned in the operating position of the power tool in a vertical direction of the power tool. The screw connection has a metal insertion part that is positioned entirely within the contour of the longitudinal support that is a plastic part. The metal insertion part has a screw receptacle for the at least one fastening screw. The at least one fastening screw is fixedly screwed into the metal insertion part. | 03-25-2010 |
20100132969 | Power tool - It is an object of the invention to reduce size of a dynamic vibration reducer in a power tool. A power tool according to the invention includes a dynamic vibration reducer | 06-03-2010 |
20100139940 | HAMMER WITH VIBRATION REDUCTION MECHANISM - A power-driven hammer including a body including a tubular housing and a barrel assembly received in the housing. The barrel assembly has an at-rest position relative to the housing. The barrel assembly includes a barrel having a forward end adapted to hold a tool, an opening, and a rearward end. The barrel assembly includes a mass received in the opening of the barrel. The mass moves in the barrel opening when the hammer is operating through a power stroke and a return stroke. The barrel assembly moves forward and rearward from its at-rest position relative to the housing when the hammer is operating. The hammer includes a vibration reducing mechanism connecting the barrel assembly to the body reducing shock transmitted to the housing as the mass moves forward and rearward in the barrel. | 06-10-2010 |
20100163262 | ELECTRICAL POWER TOOL - An electrical power tool ( | 07-01-2010 |
20100181085 | POWER TOOL - Gel-like material or viscoelastic polymer is placed in a portion having a three-dimensional shape. A power tool driving force transmission mechanism transmits a rotary driving force from a rotary drive source to operate the power tool; and a housing provides an outer shell for the power tool. A tail cover is provided at least a region of the housing, held by an operator; and gel-like material, enclosed by a resin film into a gel pack, is placed between the tale cover and the housing. The tail cover is composed of an elastomer member and a resin member, which is integrally formed with the elastomer member and has a higher hardness than the elastomer member. A portion receiving the gel pack is composed of the elastomer member, and a portion connected to the housing is composed of the resin member. The gel pack may be substituted with viscoelastic polymer. | 07-22-2010 |
20100186979 | MACHINE HAND TOOL HOUSING UNIT - The invention relates particularly to a hand-held power tool housing unit which surrounds at least one component of the hand-hand power tool, having a first housing part, a second housing part, and a damping device disposed between the two housing parts. It is proposed that the damping device forms an additional housing part. | 07-29-2010 |
20100193209 | HAND-HELD POWER TOOL, IN PARTICULAR ELECTRICALLY DRIVEN HAND-HELD POWER TOOL - A handheld power tool has a housing having two separate housing parts, between which a primary damping element is disposed, wherein a secondary damping element is disposed acting parallel to said primary damping element. During regular function of the primary damping element, the secondary damping element is at least approximately force-free. In the event of a changed relative position between the two housing parts, the damping occurs via the secondary damping element. | 08-05-2010 |
20100206594 | HANDHELD POWER TOOL WITH A HANDLE VIBRATION-DAMPED BY COMPENSATING MEANS - A hand-held power tool is proposed, having a drive device for driving a tool, which is arranged in a housing of the power tool. A handle of the power tool, which is movably connected to the housing of the power tool, is vibration-damped by a movable compensating element. For this purpose, the movable compensating element is operatively connected to the handle and/or the housing of the power tool by a deflecting system. | 08-19-2010 |
20100206595 | AUXILIARY HANDLE - It is an object of the invention to improve vibration reduction of an auxiliary handle for a hand-held power tool. According to the invention, a representative elongate auxiliary handle | 08-19-2010 |
20100206596 | HAND-HELD POWER TOOL - Improving vibration reduction of a handle in a hand-held power tool by performing a predetermined operation on a workpiece by linear movement of a tool bit in an axial direction. The power tool includes a power tool body, a handle and a vibration-proofing part. The vibration-proofing part includes an elastic element that is disposed between the power tool body and the handle and reduces transmission of vibration from the power tool body to the handle, and also includes a body-side receiving part and a handle-side receiving part which are opposed to each other so as to hold the elastic element. The vibration-proofing part is designed such that deformation of the elastic element is shearing deformation in each of the direction of a z-axis defined along the axial direction of the tool bit and the directions of a y-axis and an x-axis which intersect with the z-axis. | 08-19-2010 |
20100236804 | HAND-HELD TOOL WITH A COUNTER-VIBRATION DEVICE - The invention relates to a hand-held tool, in particular a rotary hammer, a percussion hammer, or a sabre saw. The hand-held tool is equipped with a drive unit and a stroke-generating element; the drive unit is embodied to move the stroke-generating element in a reciprocating fashion along a translation axis. The hand-held tool has at least one counterweight; the counterweight is operatively connected to the drive unit in such a way that it is possible to at least partially compensate for forces at least indirectly caused by the reciprocating motion. According to the invention, the counterweight in the hand-held tool is supported so that it is able to move, in particular to reciprocate, coaxial or parallel to the translation axis. | 09-23-2010 |
20100252291 | Power tool - A power tool capable of performing vibration damping action in working operation, without an increase in size. The working tool includes a motor, a housing in which an internal mechanism driven by the motor is stored, a tool bit disposed on one end of the housing, a hand grip continuously connected to the other end of the housing, and a dynamic damper. The dynamic damper is disposed by utilizing a space between the housing and the internal mechanism so that the damping direction of the dynamic damper faces the longitudinal direction of the tool bit. | 10-07-2010 |
20100263893 | Hand-held power tool with vibration-compensating mass - A hand-held power tool includes a main handle, a percussion mechanism striking along a percussion axis, a counter mass displaceable along an oscillation axis which is inclined to the percussion axis and biasing means for preloading the counter mass to a rest position on the oscillation axis. The counter mass is arranged such that the rest position is closer to the main handle than the center of gravity is to the main handle. | 10-21-2010 |
20100270047 | Hand-held power tool - A hand-held power tool includes a machine housing, a handle, and a damping device that couples the handle to the machine housing. The damping device is configured to be star-shaped with three elastic struts, whereby a first strut and a second strut are joined to the machine housing, while a third strut is joined to the handle. | 10-28-2010 |
20100282484 | Side handle for a hand-held power tool - A side-handle for a hand-held power tool includes a gripping element and a fastener for fastening the side handle to the hand-held power tool. The gripping element and the fastening means can be pivoted with respect to each other around a rotational axis. This rotational axis runs perpendicular to a longitudinal axis of the gripping element and runs through an end area of the gripping element facing away from the fastener. | 11-11-2010 |
20100307783 | HAND-HELD POWER TOOL, PARTICULARLY A DRILLING AND/OR CHISEL HAMMER, HAVING A DAMPER UNIT - A hand-held power tool, in particular an impact driver, an impact drill, or a rotary hammer, is proposed, which has a drive unit and/or output with at least one line of action, which produces at least oscillations along the line of action. In order to reduce these oscillations, the hand-held power tool is equipped with at least one vibration absorber unit. The vibration absorber unit has at least one mobile vibration absorbing element, which has at least one degree of freedom of movement. This degree of freedom of movement encloses at least one angle not equal to zero with the line of action. | 12-09-2010 |
20110005790 | HAND GRIP - The invention relates to a hand grip having a grip core and a grip cover disposed on the grip core. The grip cover has at least one vibration-damping element. A fastening element is attached to the grip core. The vibration-damping means can be prestressed. | 01-13-2011 |
20110005791 | HAND-HELD POWER TOOL FOR PERCUSSIVELY DRIVEN TOOL ATTACHMENTS - The invention relates to a hand-held power tool for predominantly percussively driven tool attachments, in particular hammer drills and/or a chisel-action hammers. The power tool has a percussion axis and an intermediate shaft that is parallel to the percussion axis and which has a first stroke generating device having a first stroke element for a percussion drive. Additionally, at least one additional second stroke generating device having at least one second stroke element is provided for driving a counter oscillator that is arranged on or about the intermediate shaft and can be driven by the intermediate shaft. A phase displacement that is different from zero and that is unequal to 180° takes place between a movement of the first stroke element and a movement of at least one second stroke element. | 01-13-2011 |
20110011608 | POWER TOOL - The invention relates to an electric machine tool, in particular, having the construction of a pistol, comprising a drive unit ( | 01-20-2011 |
20110017483 | HAND-HELD POWER TOOL FOR PERCUSSIVELY DRIVEN TOOL ATTACHMENTS - The invention relates to a hand-held power tool for predominantly percussively driven tool attachments, in particular hammer drills and/or chisel-action hammers. The power tool includes a percussion axis and an intermediate shaft that is parallel to the percussion axis in which a first stroke generating device having a first stroke element for a percussion drive is arranged in or on the intermediate shaft and can be driven by the intermediate shaft. Additionally, at least one other second stroke generating device having at least one second stroke element is provided for driving a counter oscillator. A phase displacement that is different from zero and that is unequal to 180° takes place between a movement of the first stroke element and a movement of at least one second stroke element. | 01-27-2011 |
20110024147 | MACHINE TOOL, IN PARTICULAR A HANDHELD POWER TOOL - The invention relates to a machine tool having a two-part housing. The housing parts of the machine tool are connected by a connection device that has at least two connection projections. According to the invention, the connection projections in one housing part are arranged adjacent to each other and engage in corresponding connection recesses, in a positive fit, arranged in the other housing part. | 02-03-2011 |
20110024148 | ADAPTER PART FOR A MACHINE TOOL - The invention relates to an adapter part for a machine tool. According to the invention the adapter part is designed to be inserted between two housing parts and comprises an adapter connection element that corresponds to a housing connection element on a housing part. | 02-03-2011 |
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 |
20110036607 | PLUG ARRANGEMENT IN A MACHINE TOOL, IN PARTICULAR A HANDHELD MACHINE TOOL - A plug arrangement in a machine tool comprises a primary plug part, which is associated with a drive motor, and a secondary plug part. According to the invention the primary and secondary plug parts are assembled to form a common plug part. | 02-17-2011 |
20110073338 | POWER TOOL - It is an object of the invention to reduce transmission of an external force caused by run-out of a tool bit to a tool body in a power tool is provided. A representative power tool which performs a predetermined operation by linear motion of a tool bit in its axial direction has a tool body, a tool holder that holds the tool bit in its front end region and extends in the axial direction of the tool bit, and an elastic element. A rear region of the tool holder opposite from the front end region extends into the tool body, and in the extending region, the tool holder is coupled to the tool body such that the tool holder can rotate about a pivot on a z-axis defined by an axis of the tool bit, in directions of y- and x-axes which intersect with the z-axis. The elastic element applies a biasing force to the tool holder in such a manner as to hold the tool holder in a predetermined position or an initial position with respect to the tool body. | 03-31-2011 |
20110073339 | HAMMER DRILL AND/OR CHISEL HAMMER - The invention is based on a hammer drill and/or chisel hammer, having an impact mechanism unit, an impact mechanism housing and at least one damping unit. The invention proposes that the damping unit is arranged on the impact mechanism housing along a main extension direction of the impact mechanism unit. | 03-31-2011 |
20110100664 | STRIKING TOOL - A striking tool has a shaft, two plugs, two springs and a grip. The shaft has an outer surface, a grip section and two spring sections. The grip section is formed on and protrudes from the outer surface of the shaft and has a diameter and two ends. The spring sections are respectively adjacent to the ends of the grip section and each spring section has a diameter smaller than the diameter of the grip section. The plugs are slidably and respectively mounted around the spring sections. The springs are compressibly and respectively mounted around the spring sections and each spring abuts a corresponding plug and the grip section. The grip is slidably mounted around the grip section and is securely connected with both of the plugs. | 05-05-2011 |
20110100665 | HAND-HELD POWER TOOL - A technique for reducing the costs of manufacturing an auxiliary handle provided separately from a main handle in a hand-held power tool is provided. A hand-held power tool ( | 05-05-2011 |
20110120740 | Vibration Dampening for a Power Tool - A power tool includes a body and a housing surrounding at least a portion of the body. The power tool also includes a first isolator positioned between the body and the housing and in contact with the body and the housing. The power tool also includes a first fastener connected to the housing to position the first isolator with respect to the housing. | 05-26-2011 |
20110127056 | HAMMER DRILL - A hammer drill comprising: a body | 06-02-2011 |
20110127057 | PORTABLE POWER TOOL, PARTICULARLY CORDLESS SCREWDRIVER OR CORDLESS DRILL - The invention is a portable power tool having a drive motor disposed in a housing and a removable housing cover, and also a damping element adjoining the housing cover. In an assembled state of the housing cover on the housing, the housing cover can carry out a relative motion with respect to the housing, the damping element being disposed between the housing and the housing cover. | 06-02-2011 |
20110127058 | Power Tool - It is an object of the invention to provide an effective technique for a motor support structure of a power tool to reduce vibration. A representative reciprocating power tool may include a tool body, a tool bit, a grip, a motor, a tool bit side bearing, a grip side bearing, a tool bit side bearing housing, a grip and an elastic element. The tool bit side bearing housing houses the tool bit side bearing, while the grip side bearing housing houses the grip side bearing. The elastic element is disposed between the grip side bearing housing and the grip wherein the grip side bearing housing is elastically supported by the grip via the elastic element. According to the invention, because the grip is adapted to support the grip side bearing housing via the elastic element and the rigidity of the grip side bearing housing can be increased and vibration of the grip side bearing housing can be reduced. Further, the elastic element can absorb manufacturing errors caused between the tool body and the grip when the grip is mounted to the tool body. | 06-02-2011 |
20110139477 | HANDHELD POWER TOOL - The invention is based on a handheld power tool, having at least one vibration-cancelling device that has at least one cancellation spring and one cancellation mass. It is proposed that the cancellation mass is constructed of at least one first mass part and at least one second mass part. | 06-16-2011 |
20110155405 | POWER TOOL - A hammer drill equipped with a main body part; a drive motor; a motion conversion mechanism, and a vibration absorber which are housed in the main body part; and a handgrip which is provided as a continuation of the main body part at a position closer to the rear end side of the tool than the drive motor and used for gripping the tool. The absorber is in a configuration where vibrations of the main body part are suppressed during a machining operation. | 06-30-2011 |
20110226501 | Handheld work apparatus - A handheld work apparatus includes a drive motor ( | 09-22-2011 |
20110232929 | IMPACT HAMMER WITH PRE-PRESSING DAMPING AND BUFFERING EFFECT - An impact hammer with pre-pressing damping and buffering effect includes a handle, outer barrel, air inlet, internal slide, actuating cylinder, air flow switching module and air inlet coupling portion. A front damper is assembled between the front end of the internal slide and the front end wall of the holding space and is characterized by a two-section pre-pressing rear damper assembled between the rear end of the internal slide and the rear end wall of the holding space. The two-section pre-pressing rear damper includes superposed upper and lower elastic buffers. At least the lower elastic buffer is pressed by a pre-pressing member to the preset degree. When the impact hammer yields recoil force under the impaction of the piston, the pre-pressing rear damper is employed to realize stronger buffering effect, so that the impact force is not much affected, thereby improving the impact efficiency and yielding excellent buffering effect. | 09-29-2011 |
20110240324 | VIBRATION INSULATING DEVICE FOR A HANDHELD WORK MACHINE - A vibration insulating device connects two members of a handheld work machine via a coil spring. One end of the coil spring is supported by a first supporting member fixed to one member, and the other end is supported by a second supporting member fixed to another member. At least one of the first and second supporting members includes a threaded groove that engages with the coil spring and a tool engaging portion that configured capable of being engaged with a general-purpose tightening tool. | 10-06-2011 |
20110253404 | HAND-HELD POWER TOOL - A hand-held power tool, has a main element having a tool axis, a center of gravity, and a normal axis which extends perpendicular to the tool axis and through the center of gravity, and the tool axis and the normal axis define a plane of motion, a handle supported in the plane of motion such that it is movable relative to the main element, a spring unit connecting the handle with the main element, the spring unit including a spring element and is provided to at least substantially define a trajectory of at least one portion of the handle in the plane of motion under an influence of a load force which is triggered when the handle is moved out of a neutral position and approaches the main element which is stationary, the handle having a handle body, a rotary element which connects the handle body and the main element and in interaction with the spring unit defines a joint-free rotation axis about which the handle rotates in the plane of motion when a motion takes place relative to the main element, and wherein the rotary element is supported such that it is rotatable relative to the main element and to the handle body. | 10-20-2011 |
20120012352 | HANDLE PORTION OF A HAND-HELD MOTOR-DRIVEN TOOL - A handle portion for a hand-held motor-driven tool and a hand-held motor-driven tool including a base portion ( | 01-19-2012 |
20120012353 | SIDE HANDLE - A side handle for a power tool comprising: a central bar; a tubular grip which is mounted on and surrounds the central bar via a vibration dampener; the vibration dampener comprising a spring having a central plate, which is mounted in a non moveable manner on the central bar, and a plurality of resiliently deformable arms attached to the plate and which extend away from the plate towards the grip, the ends of each of the arms being non moveably attached to the grip. | 01-19-2012 |
20120024554 | MULTIPURPOSE HITTING DEVICE WITH A MECHANISM FOR ABSORBING THE ENERGY TRANSMITTED TO THE GRIPPING MEANS - A tool has a mechanism for absorbing energy transmitted to a hand grip, comprising a support body, a handle, an elastic return member and an interchangeable head as a base unit which is capable of accommodating additional fittings depending on the specific application. A lower part of the cylindrical body has a shouldered part having a diameter larger than its upper part so as to allow positioning and support of a ring associated with the handle. The handle has an internal shouldered part with an upper face constituting the support for the elastic return member. The interchangeable striking head comprises a part centered in the ring and a neck that fits inside an internal bore of the body. The striking head rests directly on the body in order to transmit the entire striking force to the body, and the handle extends rearwardly as the hand grip. | 02-02-2012 |
20120031638 | POWER TOOL - A representative power tool according to the invention performs a predetermined operation on a workpiece at least by axial linear movement of a tool bit | 02-09-2012 |
20120031639 | REAR HANDLE - A power tool, for example a hammer drill comprising: a housing; a handle having two ends, the first end being moveably mounted to the housing via a first mounting assembly, the second end being moveably mounted to the housing via a second mounting assembly; wherein the first mounting assembly comprises: a first part mounted on the housing and a second part mounted on the first end of the handle, one part comprising a sleeve, the other part comprising a rod mounted in an axially slideable manner in the sleeve to enable the first end of the handle to slide towards or away from the housing; and a biasing mechanism connected between the two parts which biases the first end of the handle away from the housing; wherein the second mounting assembly comprises: a third part mounted on the body and a fourth part mounted on the second end of the handle, one part comprising a support, the other part comprising a pin located in the support which is capable of being rotated in the support to enable the second end of the handle to rotate relative to the housing and to move linearly in the support to enable the second end of the handle to move linearly relative to the housing; characterized in that the support comprises a passage in which the pin is located, the pin being capable of freely moving within the passage either rotationally to enable the second end of the handle to rotate relative to the housing or linearly to enable the second end of the handle to move linearly relative to the housing. | 02-09-2012 |
20120055688 | HAND-HELD DEMOLITION TOOL - The invention relates to a hand-held demolition tool ( | 03-08-2012 |
20120055689 | HANDHELD POWER TOOL - A handheld power tool is disclosed. The handheld power tool has a drive oscillating along a working axis and a vibration damper. The vibration damper has a mass element suspended in a spring mechanism. The spring mechanism acts with a first spring stiffness and acts with a second spring stiffness. The first spring stiffness is different from the second spring stiffness. | 03-08-2012 |
20120067605 | STRIKING TOOL - A technique for improving the vibration-proof effect and usability of a handle is provided in an impact tool. An impact tool is provided which linearly drives a tool bit in an axial direction thereof to cause the tool bit to perform a predetermined hammering operation. The impact tool includes a motor, a striking mechanism part, that is driven by the motor and causes the tool bit to linearly move, a tool body that houses the motor and the striking mechanism part, an outer shell housing that covers at least part of the tool body and is connected to the tool body via a vibration-proofing first elastic element so as to be movable in a direction transverse to the axial direction of the tool bit with respect to the tool body, and a handle which is designed to be held by a user and connected to an opposite side of the outer shell housing from the tool bit via a vibration-proofing second elastic element so as to be movable in the axial direction of the tool bit with respect to the outer shell housing. | 03-22-2012 |
20120097410 | Tool - One embodiment of a tool generally comprises a skeleton, barrel, valve box assembly, and a throttle assembly. A sleeve may also be included to cover a portion of the skeleton. The skeleton may include a main body with a handle member protruding therefrom, wherein a throttle void may be formed intermediate to the main body and handle member. The throttle assembly may be configured such that the actuation of the throttle is in a direction substantially perpendicular to the handle member, which allows periphery of the handle member to be less than it would in a parallel configuration. A sleeve fashioned of energy absorbing and/or vibration damping material may be positioned over a portion of the skeleton. A handle integrally formed with the sleeve may cover the handle member to increase the ergonomic features of the tool. | 04-26-2012 |
20120111595 | Hand-Held Power Tool, In Particular Electric Hand-Held Power Tool - A hand-held power tool has a housing including at least two separate and interconnected housing parts, wherein one housing part forms a handle housing for holding and guiding the hand-held power tool. The handle housing includes a handle and a fastening component. The fastening component is connected to the other housing part and to the handle, and a vibration reduction element is arranged between the fastening component and the handle. | 05-10-2012 |
20120118599 | Hand-Held Power Tool, in particular Electric Hand-Held Power Tool - A hand-held power tool has a housing comprising at least two separate and interconnected housing parts, wherein one housing part forms a handle part for holding and guiding the hand-held power tool. At least two vibration reduction elements are arranged in the force transmission path between the housing parts. | 05-17-2012 |
20120125649 | Hand-Held Machine Tool - A hand-held machine tool having a linear drive for moving a tool along a working axis, e.g. a motor-driven pneumatic driving tool, is provided. At least two dampers are provided in the hand-held machine tool for damping vibrations along the working axis. A resonant excitation of a vibration of the first damper along the working axis occurs at a first resonance frequency, which differs from a second resonance frequency of the second damper for the vibration along the working axis. | 05-24-2012 |
20120160532 | Handheld Work Apparatus - A handheld work apparatus has a drive motor ( | 06-28-2012 |
20120160533 | POWER TOOL - A power tool for performing a predetermined operation by using a tool driven by a motor including a first housing to which the tool is attached at an end of the first housing and which has a cylindrical portion of the first housing, a second housing which has a cylindrical portion of the second housing covering the cylindrical portion of the first housing, and a vibration reduction member which is provided between the cylindrical portion of the first housing and the cylindrical portion of the second housing and which reduces transmission of vibration between the first housing and the second housing via elastic shearing deformation of the vibration reduction member. A direction of the shearing deformation of the vibration reduction member corresponds to a direction of a rotation axis of the motor. | 06-28-2012 |
20120186843 | MOTORIZED WORKING TOOL - A motor unit has a tool for engaging a work piece with a frame unit, which has a gripping element for the handheld operation of the device, wherein a mechanical coupling is provided between the motor unit and frame unit, which encompasses at least one dampening element, in such a way that makes it possible to precisely guide the tool while improving the dampening of vibrations between the motor unit and frame unit. The frame unit has at least one abutting element, against which the motor unit abuts when a working force exerted by the work piece on the tool has a value below a minimum value. | 07-26-2012 |
20120211250 | VIBRATION REDUCTION HANDLE AND POWER TOOL - A vibration reduction handle includes: a handle body attachable to a disk grinder; a grip portion which extends in a first direction defined as a longitudinal direction of the grip portion and is pivotably movable in a second direction crossing the first direction; and a first vibration reduction rubber and a second vibration reduction rubber which are respectively provided between the handle body and the grip portion. | 08-23-2012 |
20120227995 | Connecting Rod Drive Comprising an Additional Oscillator - An electric tool includes a striking mechanism assembly, which can be driven in and against a striking direction in a cyclic manner, and a counter-oscillator for compensating for vibrations of the electric tool, in particular of housing oscillations, comprising a balancing mass. The balancing mass can be driven in a movement direction by driving the striking mechanism assembly, wherein the movement direction extends at an angle to the striking direction. | 09-13-2012 |
20120255753 | HAND-POWER TOOL WITH AN OSCILLATION-DAMPING DEVICE - A hand-power tool includes at least one oscillation-damping device that has at least one damping spring, a damping mass, and a mechanism housing. The oscillation-damping device has at least two retaining parts that at least partly enclose the damping mass. | 10-11-2012 |
20120267136 | Hand Machine Tool and Absorber - The absorber for a hand machine tool according to the invention with a linear drive has a case and a body of mass moveable alongside of an absorber axis relative to the case. Force is applied toward a first direction to a first coupling element moveable alongside of the absorber axis, which is coupled with the body of mass using a first spring. Force is applied toward a second direction to a second coupling element moveable alongside of the absorber axis using a second spring coupled with the case. With a movement toward the first direction, the first coupling element is frictionally coupled with the second coupling element and with a movement toward the second direction, it is uncoupled from the second coupling element. | 10-25-2012 |
20120279741 | VARIATION OF THE NATURAL FREQUENCY OF VIBRATORY MEANS IN ELECTRIC TOOLS - An electric tool includes a vibratory means which is configured to impart a counteracting vibration which counteracts a housing vibration of the electric tool. A vibration-relevant characteristic of the vibratory means can be adapted during the operation of the electric tool in such a way that the amplitude, the phase position and/or the frequency of the counteracting vibration varies with a change in the vibration-relevant characteristic. The vibratory means of the electric tool has a natural frequency which can be varied by variation means of the electric tool. A method for compensating housing vibrations, in particular of the electric tool, includes imparting a counteracting vibration by a vibratory means which counteracts a housing vibration of the electric tool. The amplitude, the phase position and/or the frequency of the counteracting vibration is varied during the operation of the electric tool. | 11-08-2012 |
20120298392 | VIBRATION DAMPER - The invention relates to a vibration damper for a machine component which vibrates in the operating state thereof, wherein a damping mass arrangement is coupled to the machine component via a clearance and wherein the excitation of the damping mass arrangement in at least one vibration direction originates from a substantially shocklike interaction between the damping mass arrangement and the machine component. The invention leads to an increase in dampening efficiency due to the utilization of shock-like transfer of vibration energy. | 11-29-2012 |
20120305278 | Hand-Held Power Tool Having Elastomer Elements for Supporting Components in the Housing - A hand-held power tool is provided which includes a drive unit in a housing, a switch device, and elastomer elements. The drive unit is configured to be switched on and off with the switch device which comprises a switch accommodated inside the housing. The elastomer elements are molded onto the outside of the housing and onto the inside of the housing and are connected to each other via an opening in a wall of the housing. An elastomer element on the inside of the housing forms an elastomer bearing configured to support the switch. | 12-06-2012 |
20120312571 | HANDLE ASSEMBLY FOR POWER TOOL - A handle assembly for a power tool is disclosed. The handle assembly includes a base adapted to be mounted to a body of a power tool, and a handle having first and second mounting portions pivotably mounted to respective ends of the base. An elongate torsion spring has a first part mounted to the base and a respective second part mounted to each mounting portion such that pivoting of the handle relative to the base member causes twisting of the torsion member to resiliently oppose pivoting of the handle relative to the base portion. | 12-13-2012 |
20120312572 | HANDLE ASSEMBLY FOR POWER TOOL - A mounting apparatus for mounting a handle to a power tool is disclosed. The apparatus comprises a base for supporting a handle and engaging a body of the power tool, a flexible strap for engaging the base at first and second locations to form a loop for retaining the support in engagement with the body of the power tool, and a clamping mechanism comprising a pair of wedges for engaging the base and the flexible strap, and a bolt for retaining the wedges in position relative to the base. A knob enables movement of the wedges relative to each other in a first direction to reduce the size of the loop and in a second direction to increase the size of the loop. | 12-13-2012 |
20120318551 | Hand-Power Tool Comprising an Oscillation-Damping Device - A hand-power tool includes at least one oscillation-damping device that has at least one damping spring and a damping mass. The hand-power tool also includes a drive mechanism and a mechanism housing. The mechanism housing has a housing cover which is provided for closing a chamber in which the drive mechanism lies, and the housing cover has at least one fixing mechanism that at least partially fixes the oscillation-damping device in at least one operating state. | 12-20-2012 |
20130025897 | HAMMER DRILL - A hammer-drill including a body in which is mounted a motor and a hammer mechanism which is driven by the motor; a tool holder mounted on the front of the body and which is capable of holding a cutting tool, the hammer mechanism being capable of imparting impacts to the cutting tool, when held by the tool holder; a rear handle, moveably mounted onto the rear of the body via at least one movement control mechanism and which is capable of moving towards or away from the body; a biasing mechanism which biases the rear handle away from the body. | 01-31-2013 |
20130043052 | HAMMER DRILL - A hammer drill having a housing and a rear handle moveably mounted to a rear of the housing by means of at least one movement control mechanism is disclosed. A bellows is fixed to the handle and slidably mounted to a protrusion on the housing to prevent access to the movement control mechanism. | 02-21-2013 |
20130048327 | IMPACT TOOL - An impact tool is provided with a rational structure of connecting a ring-like member and a counter weight. The impact tool has a tool body, a motor, a drive shaft, a ring-like member that is caused to swing in an axial direction of a tool bit by rotation of the drive shaft, a tool driving mechanism, that is connected to the ring-like member and caused to rectilinearly move in the axial direction of the tool bit, and a counter weight that reduces vibration caused in the tool body in the axial direction of the tool bit. The counter weight has a connecting part that comes in contact with an outer edge of the ring-like member in at least one of axial directions of the tool bit, and the counter weight is connected to the ring-like member via the connecting part. | 02-28-2013 |
20130112450 | VIBRATION DAMPENING SYSTEM FOR A HANDLE OF A MACHINE THAT VIBRATES, AND A METHOD OF DAMPENING VIBRATIONS PRODUCED BY A MACHINE - A multi-segmented handle built in tiers, with vibration isolators separating one tier from the other tiers. The tier that connects via isolators with a machine base is the one to which the other tiers are attached. The tiers shape is circular or a series of circles to diminish the shock wave and each tiers tubes are filled with a vibration dampening element turning the tier into a harmonic absorber. Each tier has attachments to accommodate the isolators for attaching one tier to another tier. The shapes that the tiers take are not limited to circular but includes all shapes, curved or straight and the isolators include all types of isolators. | 05-09-2013 |
20130153255 | Hand-Held Machine Tool - The disclosure relates to a hand-held machine tool, comprising a drive unit, a gearbox unit, which comprises at least one input shaft and at least one output shaft operatively connected to the input shaft, and a tool holder, which is configured to be driven via the output shaft of the gearbox unit in an oscillating manner about an axis of rotational symmetry of the output shaft. A vibration compensating unit is proposed, which comprises at least one compensating mass which, in order to compensate for a vibration, is driven in at least one operating state against a direction of movement of the tool holder. | 06-20-2013 |
20130192861 | HAND POWER TOOL DEVICE - A hand power tool device includes a hammer tube and a B-impact damping system. The B-impact damping system includes at least one damping mechanism configured to damp recoil energy. The damping mechanism is disposed at least partially radially outside of the hammer tube in at least one operating state. | 08-01-2013 |
20130199810 | ROTARY HAMMER - A rotary power tool includes a housing, a tool element defining a working axis, and a handle coupled to the housing. The handle is movable along a first axis parallel with the working axis between a retracted position and an extended position. The handle includes an upper portion and a lower portion. The rotary power tool also includes an upper joint coupling the upper portion of the handle to the housing and a lower joint coupling the lower portion of the handle to the housing. Each of the upper and lower joints includes a rod extending into the handle and a biasing member disposed between the handle and the housing. The biasing member is operable to bias the handle toward the extended position. Each of the upper and lower joints is operable to attenuate vibration transmitted along the first axis and along a second axis orthogonal to the first axis. | 08-08-2013 |
20130277079 | POWER TOOL - A hand-held power tool capable of reducing strain on a worker's fingers which might be caused by vibration and reaction during work is provided. A grip section, which is extending from substantially a central part in an axial direction of the body portion toward a direction substantially perpendicular to the axial direction, is integrally provided on a body portion having a motor housing. A grip housing configuring the grip section is provided so as to extend from the motor housing. The grip housing includes a housing body including a pair of housing pieces and a cover sandwiched to be held by the housing pieces. The cover includes a compression-molded article in which a resin cover body and a rubber member are integrally formed by compression molding. | 10-24-2013 |
20140182871 | Reciprocating Tool with Fluid Driven Counterweight - In one embodiment, a reciprocating tool includes a first variable volume fluid chamber, a second variable volume fluid chamber in fluid communication with the first variable volume fluid chamber, a plunger configured to modify the volume of the first variable volume fluid chamber by movement generally in a first direction along a plunge axis such that a portion of a fluid moves from one of the first and second variable volume fluid chamber to the other of the first and second variable volume fluid chamber, a counterweight configured such that the movement of the portion of the fluid results in a movement of the counterweight generally in a second direction along the plunge axis, the second direction opposite to the first direction, and a chuck assembly supported by the plunger. | 07-03-2014 |
20140262402 | Power Hand Tool with Vibration Isolation - In one embodiment, a power hand tool includes a housing containing a working shaft, and a vibration isolation assembly, the vibration isolation assembly including at least one base member including a base portion fixed with respect to the housing, at least one vibration isolation portion including a first portion operably connected to the at least one base member, the at least one vibration isolation portion configured to isolate vibration in at least one direction, and a grip member having an outer surface configured to be gripped by a user and an inner surface operably connected to an outer portion of the at least one vibration isolation portion. | 09-18-2014 |
20140299345 | HAND-HELD TOOLS AND COMPONENTS THEREOF - A hand-held oscillating tool has a linear motor and an accessory attachment mechanism configured for releasable coupling to an accessory blade. | 10-09-2014 |
20140326475 | HAND-HELD POWER TOOL - A hand-held power tool has a tool socket | 11-06-2014 |
20140352994 | RECIPROCATING POWER TOOL - Reciprocating power tool is provided which is improved in vibration isolation of the handle. The reciprocating power tool has a tool body and a handle connected to the tool body. When an axial direction of a tool bit is defined as a longitudinal direction, the handle extends in a vertical direction crossing the longitudinal direction. Further, an upper region of the handle is connected to the tool body via an elastic member and a lower region of the handle is connected to the tool body via a support shaft that it can rotate around an axis of the support shaft in a transverse direction crossing both the longitudinal direction and the vertical direction with respect to the tool body. When the handle rotates around the support shaft with respect to the tool body, the elastic member reduces vibration which is caused in the tool body and transmitted to the handle. | 12-04-2014 |
20150027745 | HANDHELD WORK APPARATUS - A handheld work apparatus has a motor unit comprising a drive motor. The drive motor drives a tool of the work apparatus, for example a saw chain. The apparatus has a grip unit with a handle that is vibrationally decoupled from the motor unit via an antivibration element. The antivibration element is connected to a first component of the grip unit via a holding device and a second component of the motor unit via a holding element. Arranged in the connection of the first component to the second component through the antivibration element is a predetermined breaking point formed in a third component that is replaceable independently of the first component and the second component. The strength of the connection of the first component to the second component through the antivibration element is lowest at this predetermined breaking point. | 01-29-2015 |
20150034347 | HAND-HELD MACHINE TOOL WITH OUTER HOUSING - The invention concerns a hand-held machine tool ( | 02-05-2015 |
20150107865 | AUXILIARY HANDLE AND ELECTRIC TOOL HAVING THE SAME - An auxiliary handle for removable connection with a housing of an electric tool having a first engaging portion, a second engaging portion and a third engaging portion. The auxiliary handle includes a handling portion, a fixing portion and a locking portion. The handling portion enables the user to handle the auxiliary handle and operate the locking portion. The fixing portion is engaged with the first engaging portion and the second engaging portion so as to connect the auxiliary handle to the housing. The locking portion interacts with the third engaging portion so as to lock the auxiliary handle. | 04-23-2015 |
20150129272 | POWER TOOL INCLUDING AN ANTI-VIBRATION HANDLE - A power tool includes a tool operable to work on a workpiece, a drive mechanism coupled to the tool and operable to move the tool, a housing defining an interior, the drive mechanism disposed at least partially within the interior, and a handle having a first end and a second end. The first end is fixed to the housing and the second end is spaced apart from the housing to define a gap therebetween. An insert is fixedly attached to the housing and the second end to fill the gap. The insert is more flexible than the handle and the housing. The housing includes a first engaging portion and the handle includes a second engaging portion each engageable with the insert to substantially fixedly attach the insert to the housing and the handle, and the insert includes a third engaging portion, and a fourth engaging portion. | 05-14-2015 |
20150144367 | MACHINE TOOL THAT CAN BE GUIDED MANUALLY AND HAVING A HOUSING - The invention relates to a machine tool that can be guided manually and has an outer housing extending substantially along a longitudinal axis, which has a grip region which is provided for engaging and for guiding the machine tool by means of a hand of a user, comprising an electrical drive unit accommodated in said outer housing and a tool unit that is substantially mechanically uncoupled relative to the outer housing. The outer housing has a centre of mass that, with respect to the length of the outer housing, is arranged along the longitudinal axis in a section that extends toward the rear from the geometric centre of the outer housing. | 05-28-2015 |
20150144368 | POWER TOOL - A hammer drill includes a main body which houses a driving motor having a brush and a brush holder unit which holds the brush and switches a position of the brush, and a main handle which is movable to the main body. Further, a coil spring which biases the handle is provided. In a state that the coil spring biases the handle, the handle is moved against the main body in a longitudinal direction of a hammer bit and vibration transmission from the main body to the handle is prevented. Further, interference of a lever of the brush holder unit and the handle is prevented by a part of an opening formed on the handle. | 05-28-2015 |
20150298312 | VIBRATION DAMPENING SYSTEM FOR A HANDLE OF A MACHINE THAT VIBRATES, AND A METHOD OF DAMPENING VIBRATIONS PRODUCED BY A MACHINE - A multi-segmented handle built in tiers, with vibration isolators separating one tier from the other tiers. The tier that connects via isolators with a machine base is the one to which the other tiers are attached. The tiers shape is circular or a series of circles to diminish the shock wave and each tiers tubes are filled with a vibration dampening element turning the tier into a harmonic absorber. Each tier has attachments to accommodate the isolators for attaching one tier to another tier. The shapes that the tiers take are not limited to circular but includes all shapes, curved or straight and the isolators include all types of isolators. | 10-22-2015 |
20150306757 | POWER TOOL AND COMBINED HOUSING THEREOF - A combined housing for a power tool has an inner housing body and an outer layer body attached to the outside of the inner housing body. The combined housing has at least one vibration-suppressing area. The vibration-suppressing area is provided with a plurality of vibration-suppressing structure units and each vibration-suppressing structure unit has a unit channel formed by the inner housing body and a unit groove formed by the outer layer body and arranged on one end of the unit channel. The unit groove and the unit channel of each vibration-suppressing structure unit form a vibration-suppressing cavit, and the outer layer body serves as the outside of the outer housing. | 10-29-2015 |
20160129579 | Side Handle - A side handle for a power tool includes a base, a grip with an elongated tubular inner section having a first end and a second end, an outer sleeve which surrounds at least part of the inner section. The outer sleeve is connected to the inner section at the first end via a connecting section. The connecting section is resiliently deformable to allow pivotal movement of the outer sleeve relative to the inner section. Damping masses can be attached to the inner section and/or outer sleeve. | 05-12-2016 |
20160136801 | POWER TOOL - A power tool includes a motor, a driving mechanism, a body housing, a handle, and a rear position defining member. The driving mechanism is driven by the motor and configured to drive a tool bit in a longitudinal direction. The body housing houses the motor and the driving mechanism. The handle is connected to the body housing so as to be allowed to move with respect to the body housing between a front position and a rear position in the longitudinal direction, while being biased by a biasing member in the longitudinal direction. The handle includes a handle base and a handle cover. The rear position defining member extends from the body housing to a position between the handle base and the handle cover in the longitudinal direction and is configured to define a rear position of the handle. | 05-19-2016 |
20160176037 | PORTABLE WORKING MACHINE | 06-23-2016 |
20160183671 | MOUNTING SYSTEM FOR AN OSCILLATING MOTOR IN A PERSONAL CARE APPLIANCE - Oscillating motor mounting systems for personal care appliances are disclosed that reduce vibration transmitted to the appliance handle. In order to reduce vibration in the handle, the oscillating motor is suspended within the personal care appliance via a suspension system. | 06-30-2016 |
20180021932 | VIBRATION DAMPING HANDLE ASSEMBLY | 01-25-2018 |