Abstract: 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.

Abstract: 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.

Abstract: The invention relates to a power tool, such as an impact drilling machine, impact screwdriver, saber saws, grinders, or the like, comprising a housing. In the housing, an electric motor and an electric or electronic module that is attached to holders in the housing, for example, an electric switch or electronics, are provided. Between the holders in the housing and the electrical or electronic modules, a vibration decoupling element is disposed.

Abstract: An impact tool includes a reaction force transmitting member, a first elastic member that biases the transmitting member forward, and a second elastic member that is pushed by the transmitting member and compressively deforms when the transmitting member moves rearward by receiving a striking reaction force caused when a tool bit strikes a workpiece, thereby cushioning the force. When the tool bit is pressed against the workpiece, the transmitting member is pushed by the tool bit and compresses the first elastic member, and comes in contact with the second elastic member in an uncompressed state, so that the transmitting member is placed in a predetermined working position in the longitudinal direction. When the transmitting member receives the striking reaction force in the working position, the transmitting member moves rearward in the axial direction of the tool bit and compressively deforms the second elastic member, thereby cushioning the striking reaction force.

Abstract: 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.

Abstract: According to one embodiment, there is provided an anti-vibration structure for a handle of a portable brush cutter, the structure including: a pole; an operation unit provided at a front portion of the pole; an engine provided and a lever device provided at a base portion of the pole; an attachment stay unit fixed to a middle portion of the pole, the attachment stay unit having an accommodation recess at each end thereof; an operation handle having a protrusion protruding from each end thereof; and anti-vibration materials sandwiched between the attachment stay unit and the handle main body in a left-right direction of the pole, so that one side of the anti-vibration material is accommodated in the accommodation recess while the protrusion is inserted in an open-groove formed on the other side of the anti-vibration material.

Abstract: 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, and a housing defining an interior. The drive mechanism is disposed within the interior. A handle has 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 then the handle and the housing.

Abstract: According to one embodiment, there is provided an anti-vibration structure for an operation lever of a portable brush cutter, in which a lever device includes: a main body through which a pole is inserted in an axial direction, the main body including protrusions protruding from both ends in the axial direction; support members provided on the pole to support the both ends of the main body such that the main body is separated from the pole, each support member including a recess; and anti-vibration materials accommodated in the recesses of the support members so as to be sandwiched between the support members and the main body in the axial direction, respectively, each anti-vibration material including a groove to which a respective one of the protrusions of the main body is inserted.

Abstract: An improved vibration dampening system has been developed for handheld electrical power tools. The vibration dampening system includes a material that a controller selectively activates with an electrical current to increase the rigidity of the material and dampen random vibrations detected by the controller. The material is positioned between a foot member that helps support the tool against a work piece and both hand grips for the tool. Thus, the vibration dampening system reduces the impact of random vibrations on both hands of an operator.

Abstract: The invention concerns a hand-held machine tool (10) having an outer housing (12) which extends substantially Along a longitudinal axis and comprises a gripping region (13) which is provided so that it can be gripped and the machine tool (1) guided by a user's hand, and having an electric drive unit (14), which is accommodated in the outer housing (12), and a tool arrangement (15) which is coupled substantially rigidly to the electric device unit (14). The outer housing (12) of the machine tool (10), has a defined inner contour (20) and the electric drive unit (14) and the tool arrangement (15) have a defined outer contour (19). The outer contour (19) and the inner contour (2) of the outer housing (12) are at a predetermined minimum spacing trout each other.

Abstract: A hand-held work implement comprises a housing, at least one tool and a combustion engine for driving the tool. The combustion engine has a cylinder and has a piston which drives a crankshaft in rotation about an axis of rotation. The crankshaft drives a fan impeller. The work implement has a handle unit with a handle bar and has an engine unit, these being connected to one another via anti-vibration elements. The combustion engine has a transverse plane which encompasses the cylinder longitudinal axis and which runs parallel to the axis of rotation of the crankshaft. The transverse plane divides the work implement into a front region, in which a section of the tool that projects out of the housing is arranged, and a rear region. The fixing of the anti-vibration element to the cylinder is realized in the front region.

Abstract: 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.

Abstract: A power tool, including a housing and a handle having two ends. The first end of the handle being moveably mounted to the housing via a first mounting assembly and the second end being moveably mounted to the housing via a second mounting assembly. One part of the first mounting assembly including a sleeve and the other part including a rod mounted in an axially slideable manner in the sleeve. A biasing mechanism connected between the two parts. One part of the second mounting assembly including a support and the other part including 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.

Abstract: 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.

Abstract: 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.

Abstract: An improved hand-held power tool is provided which can effectively reduce whirling vibration caused by imbalance of a rotating element. The power tool has a grip that is connected to a tool body and designed to be held by a user and a self-synchronous mechanism that reduces whirling vibration caused in the tool body or the grip when the tool bit is driven. The self-synchronous mechanism is of a phase variable type, having a rotating body which serves as a vibrator and is rotationally driven by a driving source different from a driving source for the tool bit. The self-synchronous mechanism is disposed in the tool body or the grip in which whirling vibration is caused, and arranged such that a phase of vibration of the rotating body is automatically tuned to a phase of the whirling vibration, thereby reducing the whirling vibration.

Abstract: A hand-held power tool has a tool socket 2, a drive 5, 6 for driving the tool socket 2, and a housing 19 in which the drive 5, 6 is accommodated. A stationary part 14 of the drive 5 is connected by means of at least one detachable clamped connection 21 to at least one element 19, whereby the element 19 is the housing 19 or another stationary part of the drive 5, 6. The clamped connection 21 has a cylindrical pocket 22 in the one stationary part 14, a bushing 27 that is made of plastic and that is inserted into the cylindrical pocket 22, and it has a screw 30 that is screwed into the bushing 27.

Abstract: A rotary power tool includes a housing, a spindle defining a working axis, and a motor supported by the housing. The motor is operable to drive the spindle. The rotary power tool also includes a handle movably coupled to the housing and a vibration isolating assembly disposed between the housing and the handle. The vibration isolating assembly attenuates vibration transmitted from the housing to the handle. A battery pack is removably coupled directly to the handle and configured to provide power to the motor.

Abstract: A hand-held oscillating tool has a linear motor and an accessory attachment mechanism configured for releasable coupling to an accessory blade.

Abstract: 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.

Abstract: In one example, a handheld fluid sprayer is provided and includes a housing, an assembly having at least one of a motor and a fluid pump, and at least one assembly support feature. The assembly is mounted to the housing with the at least one assembly support feature. The at least one assembly support feature includes a first portion having first and second opposed surfaces and a second portion having first and second opposed surfaces. The second portion extends from the first portion such that at least one of the first and second surfaces of the second portion is at least substantially orthogonal to the second surface of the first portion.

Abstract: An impact tool includes a bit holding device with an elongate tool holder having a bit holding hole with a tool bit, an outer shell component forming an outer shell of the bit holding device and mounted onto a front end portion of the tool holder, a stopper fitted onto the tool holder and prevented from moving in a longitudinal direction of the tool holder, and prevents the outer shell component from becoming detached from the front end of the tool holder, and an opening prevention member disposed outward of a center position of the stopper in the longitudinal direction of the tool holder and opposed to an outer surface of the stopper in a direction transverse to the longitudinal direction of the tool holder, and prevents the stopper from opening in the direction transverse to the longitudinal direction of the tool holder.

Abstract: 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.

Abstract: A vibration dampening handle for a powered apparatus includes an elongated gripping member having first and second opposite ends and a longitudinal axis extending through the first and second ends, and a wall defining an inner bore and having an inner surface. The inner bore extending along the longitudinal axis at least partially through the gripping member, and opens on at least the first end of the gripping member. A weighted mass is disposed at the second free cantilevered end of the gripping member. An elongate elastic beam member is attached to the gripping member. A portion of the beam member is disposed within the inner bore and is spaced apart from the inner surface. The beam member further includes a first end that extends beyond the first end of the gripping member and includes a fastening member adapted to connect the handle to the powered apparatus.

Abstract: 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.

Abstract: 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.

Abstract: A mounting assembly for moveably mounting a handle of a power tool to a housing of the power tool is disclosed. The mounting assembly has a metal bar (324) mounted to a housing (290) of the power tool and a vibration damper (332) mounted to a handle (294) of the power tool and slidably mounted to the metal bar. The vibration damper includes a vibration damping member (344) for damping vibrations tending to cause the vibration damper to pivot relative to the metal bar about an axis substantially parallel to the longitudinal axis of the metal bar.

Abstract: 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.

Abstract: 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 includes a power tool body having a front end region to which a tool bit can be mounted, a main handle that is disposed on a rear end side of the power tool body opposite from the tool bit, an auxiliary-handle mounting member for mounting an auxiliary handle, and longitudinally elastic elements that are disposed between the power tool body and the auxiliary handle mounting member in the axial direction of the tool bit and can elastically deform in the axial direction. The auxiliary-handle mounting member is allowed to move with respect to the power tool body in the axial direction of the tool bit by elastic deformation of the longitudinally elastic elements, so that transmission of vibration from the power tool body to the auxiliary-handle mounting member in the axial direction is reduced.

Abstract: An oscillation reducing suspension device for a fan motor of a combustion-powered tool includes a rigid axial-play setting unit mounted on an upper major surface of a cylinder head, and having upper and lower limit defining members that are spaced apart from each other by an axial play route, a suspending mount configured to keep the fan motor oriented in a rotary axis, and having a lug which extends radially into the axial play route to divide the axial play route into proximate and distal regions, and an elastomeric damper unit having upper and lower damping members respectively disposed in the distal and proximate regions. By virtue of the rigid mount supporting the fan motor, and the resilient damper unit coupling the mount and the cylinder head, the fan motor is firmly secured to the cylinder head, and axial oscillation of the fan motor is reduced.

Abstract: 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.

Abstract: 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.

Abstract: A work apparatus has at least one handle (12) and a drive motor (3). The handle (12) is connected to said drive motor (3) via at least one anti-vibration element (16, 17, 18, 19, 20). The anti-vibration element (18, 19) is held on a first housing part and coacts with a second housing part. To achieve good damping, the anti-vibration element (19) includes a damping section (25) having an annularly-shaped wall (37) which expands in the direction of the second housing part.

Abstract: 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 vibration absorber is in a configuration where vibrations of the main body part are suppressed during a machining operation.

Abstract: A handle portion for a hand-held motor-driven tool and a hand-held motor-driven tool including a base portion (20), a rear handle (30) arranged to the rear part (20a) of the base portion (20) and a front handle (40) having a first end (40a) attached to the base portion (20) and a second end (40b) attached to the base portion (20). At least a part of the front handle (40) is arranged as a loop starting from a first lateral face (20c) extending in a direction away from a lower face (20e) of the base portion (20) and further in a direction towards a second lateral face (20d). A first attachment means (12) for attaching the first end (40a) and a second attachment (13) means for attaching the second end are mountable at the same face of the first lateral face (20c), second lateral face (20d) or lower face (20e) of the base portion.

Abstract: 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, and a housing defining an interior. The drive mechanism is disposed within the interior. A handle has 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 then the handle and the housing.

Abstract: A motorized hammer has a body and a tool holder which is mounted on the front of the body and is capable of imparting impacts via the tool in the holder. A rear handle is, moveably mounted to the rear of the body via at least one movement control mechanism which is capable of moving towards or away from the body. A biasing mechanism biases the rear handle away from the body and each movement control mechanism includes a first mount. A rod having a longitudinal axis is rigidly connected at one of it ends to the first mount. A second mount slidingly engages with the rod at two distinct points only along its length to allow the rod to slide relative to the second mount in a direction parallel to the longitudinal axis. The second mount prevents the rod from moving in a direction perpendicular to the longitudinal axis.

Abstract: A handheld work apparatus includes a drive motor (28) to drive a tool and at least one handle (3) as well as at least one anti-vibration element (9) that includes a coil spring (10). The coil spring (10) is operatively connected to the handle (3) at one end and with the drive motor (28) at the other end. The anti-vibration element has a tear-off guard (29) which extends through the anti-vibration element (9). A centering element (21) is arranged on the tear-off guard (29) to avoid, in a simple manner, that the tear-off guard moves radially outwards.

Abstract: 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.

Abstract: The invention is based on a power tool with at least one handle (10, 26, 50, 62, 104) that comprises at least one grip part (12, 72, 106) that is firmly connected to a mounting part (16, 70, 110) via at least one elastic, vibration-damping element (14, 24, 52, 108), via which the grip part (12, 72, 106) is affixable to a housing (60). It is proposed that the connection between the grip part (12, 72, 106) and the mounting part (16, 70, 110) is secured by means of the elastic element (14, 24, 52, 108) via at least one movable retaining element (20, 22, 28, 64, 112).

Abstract: 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.

Abstract: 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.

Abstract: The invention relates to a portable power tool having a motor housing (1) and a separate handle housing (3) fastened to the motor housing (1) by means of an elastic vibration damper (2) and secured thereon in a positive-locking manner. The vibration damper (2) is composed of a fastening sleeve (4) assigned to the motor housing (1), an elastic damping sleeve (5) coaxially enclosing the fastening sleeve (4) and a handle holder (6) likewise coaxially enclosing the fastening sleeve (4) and the damping sleeve (5) and assigned to the handle housing (3). The essentially rigid construction unit consisting of the handle holder (6) and the handle housing (3) is secured in a positive-locking manner, with play, directly to the essentially rigid construction unit consisting of the fastening sleeve (4) and the motor housing (1).

Abstract: An auto hammer includes a housing having a grip, a head assembly arranged on one end of the housing, a motor mounted within the housing, a switch arranged on the housing for controlling the motor. There are at least two hand-holding positions on the housing where the switch can be triggered. The auto hammer may therefore be held by hands at a plurality of positions and will thereby be suitable for use in various circumstances.

Abstract: A sander according to the present invention having a housing, a motor mounted in the housing, wherein the housing comprises an upper housing section and a lower housing section, the upper housing section includes an inner surface, the lower housing section includes a motor housing, the lower housing section at least partially overlapped by the upper housing section, and a grip portion formed on the upper housing section. The upper housing section is connected with the lower housing section through a damping means including at least a damping element positioned on the inner surface the upper housing section and on the periphery of the motor housing section, the damping element engaged with engagement member. The arrangement of the damping means simplifies the connection between the upper and lower housing sections, while effectively reducing the vibrations in the horizontal and vertical directions when the sander is in use.

Abstract: An isolation system includes at least one air bladder assembly including at least one air bladder. The isolation system can also include at least one coupling member coupling the air bladder assembly to a drill head. The air bladder is configured to compress and expand to counter oscillating forces generated by the drill head.

Abstract: 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.

Abstract: An adapter part for a machine tool is designed to be inserted between two housing parts and includes an adapter connection element that corresponds to a housing connection element on a housing part.

Abstract: A hand-held power tool (2) has a base housing (4) in which there is provided an operational unit (12) movable in a reciprocating manner along a operational axis (A) defining a first spatial axis (z) and spaced from a center of gravity (SP) of the hand-held power tool (2) in direction of a second spatial axis (y) which is perpendicular to the first spatial axis, (z), and further has a cover housing (18) which is held on the base housing (4) by decoupling elements and is fixedly connected to a main handle (24) and to side-handle connection element (28), with the decoupling elements having, in a projection perpendicular to a plane (Eyz) defined by the first spatial axis (z) and the second spatial axis (y), a first support device (19) which is located adjacent to the center of gravity and which holds the cover housing (18) on the base housing (4) so as to be displaceable along and pivotal in direction of the first spatial axis (z).

Abstract: 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.