Abstract: A power tool comprises a crank pin that is eccentrically rotatable by a motor about a rotational axis. A non-rotatable first slider is linearly reciprocated by the crank pin so as to linearly reciprocate a tool. An eccentric pin is disposed substantially diametrically opposite of the crank pin relative to the rotational axis and is eccentrically rotatable by the motor about the rotational axis. A non-rotatable second slider is linearly reciprocated by the eccentric pin in a substantially opposite phase from the first slider so that the second slider acts as a counterweight to the first slider in order to reduce vibrations at least in the direction of linear reciprocation. A rotatable component is rotatably driven by the motor about the rotational axis and has a center of gravity displaced from its rotational axis towards the eccentric pin so as to supplement the vibration reducing function of the counterweight.

Abstract: The invention relates to a clamping device (8) for connecting a saw blade (12) to a reciprocating rod (6) of a jig saw, in particular a hand-operated compass saw (2), comprising a mounting (20), which is connected to the reciprocating rod (6) and has a recess (22) for receiving a head end (10) of the saw blade (12), a locking sleeve (30), which can be turned about the axis (40) with respect to the mounting (20) against the force of a torsion spring (60) to lock the head end (10) of the saw blade (12) in a locking position in the recess (22) and to allow removal of the saw blade (12) in a removal position. It is intended that a stop (78) interacts with a part (80) of the torsion spring (60), in order to prevent movement of the locking sleeve (30) beyond the removal position.

Abstract: A support arrangement for a reciprocating tool comprises a first locking surface configured to engage a second locking surface in a locking engagement. The first locking surface is secured to the reciprocating tool. The second locking surface is provided on a support foot assembly. A shaft extends between the first locking surface and the second locking surface. The shaft defines a shaft axis that is oriented substantially orthogonal to the tool axis. An adjustment mechanism is positioned on the shaft. The adjustment mechanism is configured to move upon the shaft and clamp the first locking surface and the second locking surface together. In at least one embodiment, a ratchet arrangement is provided in the adjustment mechanism. The ratchet arrangement limits the extent that the adjustment mechanism may be tightened to clamp the first locking surface to the second locking surface.

Abstract: The present invention provides a technique for achieving weight reduction of the counter weight while reducing vibration in a reciprocating power tool. A tool bit performs a predetermined operation by reciprocating. A slider reciprocates to drive the tool bit. A motion converting mechanism converts a rotating output of the motor into a reciprocating movement of the slider. A counter weight reciprocates in a direction opposite to the reciprocating direction of the slider to reduce vibration caused by the reciprocating movement of the slider. A component part includes component of motion in a direction parallel to the reciprocating movement of the slider to cooperate with the counter weight in reducing vibration caused within the power tool. Thus, the weight of the counter weight can be decreased.

Abstract: The invention relates to a power tool (1), especially in the form of a jigsaw (2), which comprises a saw blade (8). The back (39) of said saw blade is supported by a supporting member, which, even when in the shape of a supporting roller (36, 37), allows a controlled support of the saw blade (8) both in the pendulum stroke mode and in the scrolling mode.

Abstract: A system for use in securing an attachment to a driver having an attachment mounting area includes an attachment mount configured for releasable engagement with an attachment as well as a driver mount interconnected with the attachment mount. The driver mount includes a removable mounting member configured for engagement with the attachment mounting area of the driver.

Abstract: A motor-driven saber saw includes a guide device releasably connectable with the saw housing (11) in a region of the neck (13) and including a guide element (21) for guiding the saber saw (10) over a workpiece, a connection device (22) for connecting the guide element (21) to the housing (11) and having at least one connection part extending along an axis (A) and connectable with the neck (13), with the guide element (21) being supported on the at least one connection part (24) for displacement along the axis (A), and with the guide device (20) further including at least one spring element (27) located between the at least one connection part (24) and the guide element (21).

Abstract: An apparatus for the cutting of tree limbs includes an extensible drive shaft that is detachably-attachable at one end to a portable electric drill and is secured to a housing at an opposite end thereof. The housing converts the rotary motion that is supplied by the drill into reciprocating motion of a saw blade and it disposes the saw blade at an angle with respect to the drive shaft that is slightly less than 90 degrees. An extensible two-part cylindrical outer sleeve covers the drive shaft and is detachably-attached at one end thereof to the drill and at an opposite end to the housing. A hook is provided in the housing and is used to grab and urge severed limbs where desired. An optional clamping mechanism is attached to the housing and is used initially to urge the blade and the limb toward each other during cutting and then to retain the limb proximate the housing after it has been cut for controlled placement and safe release of the limb.

Abstract: A reciprocating saw includes a housing and a support shoe mounted on the front end of the housing which is adjacent to a saw blade. The support shoe includes a guide plate which is partly mounted in the housing and is movable thereabout, and a base plate pivotally connected to the guide plate. The guide plate has a series of recesses or apertures. The reciprocating saw also includes a locking member which is movable in the housing along a first direction and at least a portion of which could be engaged with any one of the recesses or apertures, and an adjusting member which is movable along a direction perpendicular to the first direction from a first position to a second position. The locking member is disposed between the adjusting member and the guide plate.

Abstract: A hedge trimmer has a housing. A blade bar projects forwards from the housing along a longitudinal axis. An electric drive motor drives the blade bar. At least one battery supplies the drive motor with electrical energy. The blade bar, the drive motor and the battery are mounted on the housing. The hedge trimmer has a top handle arranged above a center of gravity of the hedge trimmer, and a rear handle arranged behind the hedge-trimmer center of gravity. The battery is arranged on the housing at least mainly in front of the rear handle.

Abstract: Hand-operated tools; such as hand saws, knives, and files, having improved features for enhancing use thereof are disclosed. The hand tools include one or more recoil members and are adapted to absorb motion of the hand tool in a first direction, and to supplement motion of the hand tool in a second direction. A method for use of an improved hand tool is disclosed, the method includes hand tools adapted with recoil members.

Abstract: An electric saw (2) includes a stroke arrangement (4) driven in a reciprocating manner and having a tool receptacle (8) for a saw blade (10), a housing (14) which extends along a stroke axis (A) of the stroke arrangement (4) and which forms at a working tool-side end (12) a housing opening (16) from which the stroke arrangement (4) projects, and which forms a receiving space (26) in which is arranged a motion transforming device (24), the stroke arrangement (4) being supported at the housing (14) by a bearing element (30) which forms a sliding bearing (28) and is arranged between the motion transforming device (24) and the housing opening (16), with an air flow (L) being directed toward the housing opening (16) so that particles (P) can be prevented from entering the sliding bearing (28), with the bearing element (30) limiting the receiving space (26) toward the housing opening (16), and with a flow path (46) by which the air flow (L) is guided being provided at an outer side (40) of the bearing element (30)

Abstract: The invention provides a transverse guide (14, 29) of a saw blade (5, 27) for a machine tool, particularly for a hand-guided machine tool (1) in the form of a band saw or jigsaw (2), wherein the saw blade (5, 27) can be rotated about the longitudinal axis (9) thereof by way of said guide in the opposite direction to said forces as a function of transverse and/or torsional forces acting on the saw blade (5, 27).

Abstract: An accessory for a reciprocating saw, having a blade configured to cut a workpiece and a shoe including a guiding surface for engaging the workpiece, includes a body having a first face and a second face opposite the first face. The body includes a member proximate the second face for coupling the accessory to the shoe. A guiding surface is defined on the first face of the body for engaging a workpiece and an opening is formed in the body for receiving the blade. The guiding surface constitutes a modified surface configured to differ from the guiding surface of the shoe by at least one characteristic.

Abstract: An apparatus for the cutting of tree limbs includes an extensible drive shaft that is detachably-attachable at one end to a portable electric drill and is secured to a housing at an opposite end thereof. The housing converts the rotary motion that is supplied by the drill into reciprocating motion of a saw blade and it disposes the saw blade at an angle with respect to the drive shaft that is slightly less than 90 degrees. An extensible two-part cylindrical outer sleeve covers the drive shaft and is detachably-attached at one end thereof to the drill and at an opposite end to the housing. A hook is provided in the housing and is used to grab and urge severed limbs where desired. An optional clamping mechanism is attached to the housing and is used initially to urge the blade and the limb toward each other during cutting and then to retain the limb proximate the housing after it has been cut for controlled placement and safe release of the limb.

Abstract: A movement conversion device (4) for a motor-driven, hand-held, power tool (2) for converting a rotational movement into a linear reciprocating movement includes an axially reciprocating spindle (10), a motor-driven driving gear (20), an eccentric member (16) displaceably supported on the driving gear (20) and extending into the connecting link guide (14) provided at a spindle end for converting the rotational movement of the driving gear (20) into the reciprocating movement of the reciprocating spindle (10), the eccentric member (16) having a first position with respect to a rotational axis (D) of the driving gear (20) in which a distance (a) between the eccentric member (16) and the rotational axis (D) is greater than in at least one second position of the eccentric member (16), and a load-controlled spacing device associated with the eccentric member (16) for automatically adjusting the distance (a) between the eccentric member (16) and the rotational axis (D) of the driving gear (20).

Abstract: Several preferred embodiments are disclosed for a tool-less blade clamping apparatus for a reciprocating tool of the type which has a reciprocating plunger which has a tool attachment receiving slot for receiving a tool attachment of the type that has a shank portion. The clamping apparatus has an unclamped position and a clamped position. In the unclamped position, a tool attachment can be easily inserted and when it is in its clamped position, the tool attachment is securely retained. The preferred embodiments have at least one spring biasing the apparatus toward the clamped position, a releasable retaining mechanism for holding the apparatus in its unclamped position after being placed in that position. When the blade shank portion is inserted into the slot a predetermined distance, the shoulders of the shank portion release the retaining mechanism to move it to its clamped position.

Abstract: A reciprocatory saw, in particular, a jigsaw, is made up of a pitman with a chuck arranged for the releasable clamping of a saw blade. The chuck contains a movably mounted chuck jaw arrangement able to be clamped laterally against the saw blade shank, a wedge element arrangement adjacent to and for cooperation with the chuck means, a first spring acting downwardly on the inserted saw blade and a second spring acting on the wedge element arrangement downwardly. The wedge element arrangement is connected with the chuck jaw arrangement in a manner for the transmission of rotary movement and from the outside and is able to be shifted between a bottom clamping position clamping the chuck jaw arrangement against the saw blade shank and a top release position freeing the chuck jaw arrangement. The wedge element arrangement assumes an angular position turned in relation to the clamping position and is seated on a stationary holding face.

Abstract: The purpose of the “Forearm Mount” is to allow the reciprocating saw, or sawzall, to be used with one hand. “The Forearm Mount” transfers the weight of the saw to the operators' whole arm so support and thus control of the saw becomes a function of the hand, wrist, elbow and shoulder. The sawzall becomes an extension of the operators' whole arm. In many situations “The Forearm Mount” provides superior control of the saw, which allows for more accurate cutting and greater safety. Safely controlling the sawzall with one hand while freeing the other hand to hold on to a ladder or other support when working overhead or to steady a work piece like PVC pipe or other things that are not secure is the purpose of the invention. The one armed overhead cutting capability of “The Forearm Mount” allows the operator to move to one side and avoid getting the sawdust in the face.

Abstract: A surgical saw blade coupler for removably holding a surgical saw blade. The surgical saw blade may be of various shapes and sizes, including, but not limited to straight or crescentic. The surgical saw blade coupler includes a cap, a pin and a driver. The driver is rotatably coupled to a motor within a housing. A cup is located within the housing within a bearing. The cap and the pin form a slot which receives a first end of the surgical saw blade. The cap and the pin also form a groove for receiving a back edge of the surgical saw blade. The surgical saw blade coupler is moveable between an open position in which the surgical saw blade may be removed, exchanged or inserted, and a closed position. A biasing spring acts against a button and the pin to close the coupler.

Abstract: The invention relates to a handheld tool, in particular a handheld saw, with an electric drive motor (12), a serially switched gearbox (13), and a movement converter (14) that converts the driven movement of the gearbox (13) into an axial to-and-fro movement of a lifting element (15) for driving a tool (16), in particular a saw blade, inside a housing (11). The gearbox (13) and the movement converter (14) are combined into a gear unit (17). The gear unit (17) is within a robust, bending- and deformation-resistant gear housing (40), which is in turn inside the housing (11). The housing (11) is made of flexible plastic.

Abstract: The invention relates to a handheld tool, in particular a handheld saw, with an electric drive motor (12), a serially switched gearbox (13), and a movement converter (14) that converts the driven movement of the gearbox (13) into an axial to-and-fro movement of a lifting element (15) for driving a tool (16), in particular a saw blade, inside a housing (11). The gearbox (13) and the movement converter (14) are combined into a gear unit (17). The gear unit (17) is within a robust, bending- and deformation-resistant gear housing (40), which is in turn inside the housing (11). The housing (11) is made of flexible plastic.

Abstract: Preferred embodiments of a reciprocating drive apparatus are disclosed that comprise a housing, a rotatable drive shaft assembly located in the housing an elongated plunger located in the housing for reciprocating motion, the plunger having a front end portion for attaching a tool thereto, a rotary joint rocker mechanism supported in the housing and operatively connected to the plunger and the drive shaft assembly so that rotation of the drive shaft assembly produces reciprocating motion of the plunger. Another preferred embodiment includes a reciprocating counterweight.

Abstract: Embodiments of a reciprocating drive apparatus are disclosed which comprise a housing, a drive shaft rotatably mounted in the housing, an elongated plunger mounted in the housing for reciprocating motion; the plunger having a rear end portion configured to engage a wobble plate interface structure and a front end portion for attaching a tool, a first bushing positioned in the housing for retaining the front end portion in a manner whereby the plunger is not restrained from rotating about a first axis of rotation, a second bushing positioned in the housing for receiving the rear end portion of the elongated plunger in a manner whereby the plunger is not restrained from rotating along a second axis of rotation as the plunger reciprocates in the bushing, a wobble plate assembly operatively connected to the drive shaft and having an elongated arm with a wobble plate interface structure for engaging the rear end portion of the plunger and reciprocating the plunger in the first and second bushings.

Abstract: A reciprocating saw has a locking element (9) for axially fixing the saw blade (5) in a fastening device, wherein a release device (10) is provided, with which the locking element can be displaced into its release position against the spring force of an adjusting spring. A component (12), acting upon the locking element, of the release device is arranged, with respect to the plane of the saw blade, on the same side as the locking element.

Abstract: A cutting and forming tool assembly is disclosed that cuts and forms many types of material while remaining easy to use. The tool assembly may include a cutting or forming and an underlying board. The cutting and forming tool has a drive assembly and a shaft assembly contained within a housing. The shaft assembly of the tool assembly reciprocates and at least partially rotates during each reciprocating motion. The housing may be of various shapes and configurations, such as for example egg-shaped, computer mouse-shaped, or pen-shaped. The drive shaft contains a tip that protrudes from an opening in a lower portion of the housing during at least a portion of a downward stroke of the shaft assembly.

Abstract: A reciprocating saw blade has a first end with a first tang and a second end with a second tang. The first and second tangs are alternatively engageable with the chuck of a reciprocating saw. The reciprocating saw blade defines a substantially uniform cutting edge extending from approximately the first end to approximately the second end of the blade. The first tang is engageable with the chuck of the reciprocating saw for fixedly securing the first end of the blade to the reciprocating saw and forming with the second tang the free end of the saw blade. Alternatively, the second tang is engageable with the chuck of the reciprocating saw for fixedly securing the second end of the blade to the reciprocating saw and forming with the first tang the free end of the reciprocating saw blade drivable in a reciprocating motion by the reciprocating saw.

Abstract: An adaptor for attaching new, worn or broken blades to reciprocating saws. The adaptor has a slot wide enough to accommodate the working portion of the blade and includes a clamping member to clamp the blade in the slot. Since the blades are slightly flexible, the slot has a height slightly greater than the thickness of the blade, and the clamping member, such as a threaded member with a rounded end, will clamp and hold the blade by forcing it downwardly into a recess while forcing the edges of the blade upwardly into the upper shoulders of the slot. The adapter is provided with a tongue that allows the adapter to fit most, if not all, presently available saws.

Abstract: An electric saw device includes a first saw blade and a second saw blade. The first and the second saw blades are respectively driven by a small transmission shaft and a large transmission shaft to rotate in opposite directions. A round rib is disposed on an inner end surface of the first saw blade, and at least three recessed holes are arranged in a top end surface of the round rib at equal angle intervals. A steel ball is accommodated in each of the recessed holes, and protrudes out of the recessed hole. Protruding ends of the steel balls urge against an inner surface of the second saw blade, so as to limit a distance between the first saw blade and the second saw blade, and form a rolling friction when the first and the second saw blade rotate in the opposite directions. Further, a power output shaft of the electric saw device is joined with the small transmission shaft of the first saw blade through a key connection structure, so as to ensure that the saw blades do not tilt after installation.

Abstract: A hand-held reciprocating power saw (10) includes a reciprocation member (21) for reciprocatingly moving a working tool, a compensation mass (22), a motor-driven eccentric wheel (23) having a first eccentric (24) for reciprocatingly displacing the reciprocation member (21) and a second eccentric (25) for reciprocating the compensation mass (22) along an axis (A), with the outer surface (28) of the second eccentric (25) engaging in an opening (26) provided in the compensation mass (22) and defined by a circumferential wall (27), and an intermediate member (30) arranged between the circumferential wall (27) and the outer surface (28) of the second eccentric (25) at least in the contact regions (41, 42), between the circumferential wall (27) and the outer surface of second eccentric, with the intermediate member (30) having a first radial extension (R1) oriented parallel to the axis (A) and a second radial extension (R2) oriented perpendicular to the axis (A) and greater than the first radial extension (R1).

Abstract: A reciprocating saw has a saw blade, a fastening device provided for the saw blade and holding the saw blade in a non-rotating fashion, a reciprocating lifting rod having a free end supporting the fastening device, a locking element provided for axially fixing the saw blade in the fastening device, and having an adjusting spring that acts in a direction of the saw blade, wherein the locking element is movable between a release position and a locked position and holds the saw blade in the locked position in a form-locked fashion.

Abstract: A reciprocating power tool that includes a drive system having a first driven gear that includes a spindle counterbalance weight and a second driven gear that includes a spindle counterbalance weight. The first driven gear and the second driven gear rotate in opposite directions about an axis of rotation in response to rotation of a driving gear by a motor. The power tool further includes a spindle having a longitudinal axis and a first end that is configured to support a tool element. The spindle is coupled to one of the first driven gear and the second driven gear by a scotch yoke mechanism to reciprocate the spindle with respect to a housing of the power tool along the longitudinal axis of the spindle in response to operation of the motor.

Abstract: It is an object of the invention to provide a useful technique for reducing vibration of a handgrip and improving the cutting efficiency while achieving weight reduction of a reciprocating power tool. According to the invention, a representative reciprocating power tool is provided to comprise a body, a tool bit, an actuating mechanism, a handgrip. The handgrip and the body can rotate with respect to each other via a pivot in a direction crossing the direction of reciprocating linear motion of the tool bit. An elastic element is disposed between the handgrip and the body and serves to absorb vibration transmitted from the body to the handgrip by elastically receiving the relative rotation of the handgrip and the body. According to the invention, vibration in the handgrip can be reduced and the cutting efficiency can be improved without complicating the construction.

Abstract: A reciprocating saw including a first end, a working end opposite the first end, and a housing extending between the first end and the working end. A reciprocating shaft is supported within the housing and has a longitudinal axis. A locking mechanism is supported at the housing and is selectively moveable between a first position and a second position. When the locking mechanism is in the first position the reciprocating shaft is configured to substantially reciprocate relative to the housing but remain substantially rotationally fixed relative to the longitudinal axis of the reciprocating shaft. When the locking mechanism is in the second position, the reciprocating shaft is configured to substantially reciprocate relative to the housing and at the same time substantially rotate about the longitudinal axis of the reciprocating shaft independent of the housing.

Abstract: Embodiments are disclosed of a drive apparatus for a reciprocating tool, that comprises a housing, a rotatable drive shaft assembly located in the housing, an elongated plunger located in the housing for reciprocating motion, the plunger having a front end portion for attaching a cutting blade thereto, a rotary joint elongated rocker having a lower end portion with a lower pivot connection to the housing and an upper end with an upper pivot connection to a mid portion of the plunger, a wobble plate interface operatively connected to the drive shaft assembly, a lower portion having an effective lower pivot connection, the interface also having an upper pivot connection to a rear portion of the plunger and configured to reciprocate the plunger generally in its lengthwise direction during alternating cutting and return strokes, the distances between the upper and lower pivot connections of both the rocker and wobble plate interface together with the distance between the upper pivot connections thereof to the plu

Abstract: Embodiments are disclosed for a reciprocating saw that comprises a housing, a drive mechanism in the housing, a motor in the housing for driving the drive mechanism, an elongated plunger located in the housing for reciprocating motion and having a front end portion for attaching a saw blade for cutting material, the saw having an energy absorbing compliant configuration at least partially isolating a portion of the plunger and the drive mechanism from high energy impulses that can be produced by the saw blade being bound in the material being sawed during operation of the saw.

Abstract: The present invention provides a blade clamp for an electrically powered reciprocating saw. The clamp is arranged to eliminate, or at least reduce, misalignment of a blade during use with the cut direction and the longitudinal axis of a jigsaw. Thus, so-called “crabbing” of the jigsaw can be reduced, thereby increasing the accuracy with which an operator can use the jigsaw. This is achieved by modifying the blade retaining pin such that it comprises a radial protrusion which engages with or locates in a cooperating groove disposed on the clamp body. Arranging the groove and protrusion to have an engagement surface (as opposed to a point of contact) further improves on lateral stability of the pin with respect to a reciprocating shaft of the saw.

Abstract: A hand-operated jigsaw is disclosed. The reciprocating drive mechanism has a reciprocating body which can be put into a reciprocating motion along an axis via an eccentric of an eccentric wheel that can be set in motion by the motor. The eccentric wheel is arranged on a pivot bearing axis. The reciprocating drive mechanism has an additional mass with a mass center of gravity to minimize vibrations. The additional mass is arranged in a rotationally fixed manner with the eccentric wheel on the pivot bearing axis. An eccentric axis of the eccentric lies on a first radial of the pivot bearing axis, which is offset from a second radial in the operating direction of rotation of the eccentric wheel at an angle of between 190° and 270°, which second radial lies between the mass center of gravity of the additional mass and the pivot bearing axis.

Abstract: A reciprocating tool comprising a drive shaft and a motor, a plunger for reciprocating motion, the plunger being driven by a wobble plate and pivotally supported in a front bushing and in a manner not prohibiting the plunger to rotate about a longitudinal axis of rotation, the plunger has a rear spherical end, a movable counterweight and a drive arm for moving the counterweight, the counterweight having an opening for receiving the plunger, the opening has side walls that support the rear spherical end of the plunger as it moves relative to the counterweight, a first wobble plate assembly connected to the drive shaft and having a first wobble plate interface engaging and reciprocating the plunger in the front bushing and the counterweight; and a second wobble plate assembly operatively connected to the drive shaft and having a second wobble plate interface engaging the drive arm of the counterweight.

Abstract: The invention relates to a reciprocating saw that includes a reciprocatable spindle for supporting a saw blade for reciprocating sawing movement. A body houses a motor and a drive mechanism driven by the motor. The drive mechanism selectively drives the spindle and the body supports the spindle. A grip extends outwardly from the body adjacent a center of gravity of the saw so as to allow an operator to operate the reciprocating saw with a first hand and support a workpiece being cut with a second hand.

Abstract: The present invention generally provides a saw blade clamping assembly. The assembly has a main body, a clamping device, a rotating sleeve and a biasing device. The main body has a receiving slot for receiving a fixing end of a saw blade and an oblique and elongate hole communicating with the receiving slot. The clamping device has at least one clamping member passing through the oblique and elongate hole of the main body. The rotating sleeve encloses the main body and the clamping device. The biasing device is biased between the main body and the rotating sleeve.

Abstract: A portable powered tool having an elongate housing with a central axis, a working component on the elongate housing, a drive for the working component on the elongate housing and having different states, and a control with a grip that is configured to be grasped by a user by extending a user's one hand at least partially around the grip and thereby the central axis of the elongate housing to thereby situate the user's one hand in an operating position. The user's one hand, grasping the grip in the operating position, is usable to: a) support and reposition the portable powered tool; and b) move the grip around the central axis of the elongate housing to change the state of the drive.

Abstract: A tool coupling and dust collection system for collecting dust and debris generated by the use of a reciprocal saw being releasably attached to the reciprocal saw. A planar foot is attached to and extends downwardly the plate. Each of a plurality of attachments is removably attached to the foot. A housing is positioned around the plate. The housing includes a top wall, a bottom wall and a perimeter wall to define a collection space. The bottom wall has an attachment aperture extending therethrough to permit the attachments coupled to the plate to extend from the housing. The top wall of the housing has a vacuum aperture extending therethrough. A vacuum hose is coupled to the top wall of the housing and in fluid communication with the vacuum aperture. A free end of the vacuum hose is mounted to a vacuum to vacuum the dust from the housing.

Abstract: An apparatus is provided comprising a saw blade, and a saw body portion of a power saw. A lower retaining device, which can hold an object so that the object can be cut by the saw blade, is attached to the saw body portion. The lower retaining device may be attached to the saw body portion so that the object holding device can pivot with respect to the saw body portion. The apparatus may be a reciprocating saw. The lower retaining device may be supplemented with an upper retaining device for holding an object tightly while cutting.

Abstract: A handheld reciprocating saw includes a housing, a motor, a sole plate attached to the housing and having a bottom surface. The housing comprises a first housing portion which has a first longitudinal central axis and a second housing portion which has a second longitudinal central axis. An angle is formed between the first longitudinal central axis and the second longitudinal central axis. A battery is attached to one of the first housing portion and the second housing portion, and the motor is mounted in the other one of the first housing portion and the second housing portion. The first housing portion is formed with Ma first gripping portion extending in a direction of the first longitudinal central axis, and the second housing portion is formed with a second gripping portion extending in a direction of the second longitudinal central axis.

Abstract: A reciprocating saw generally includes a housing and a motor supported by the housing. A spindle is mounted for reciprocation relative to the housing, the spindle having a front end for supporting a saw blade and being movable through a cutting stroke and a return stroke, and the cutting stroke may have a stroke length. A rotary member may be supported for rotation about a rotary axis. The saw may further include an adjusting assembly operable to adjust the stroke length of the spindle. Also, the saw may include a counterweight supported for movement relative to the housing, a movement of the counterweight substantially balancing at least a portion of movement of the spindle, and an adjusting assembly operable to adjust the movement of the counterweight.

Abstract: A handheld power tool having a power tool that executes a reciprocating motion, in particular a reciprocating power saw with a reciprocating sawblade (14), is disclosed. To prevent the power tool from sawing untrue during the cutting operation, in particular between the upper and lower cutting edges, the power tool is assigned at least one force transducer (19), which measures the magnitude of a transverse force, oriented transversely to the direction of motion, that occurs at the power tool, and at least one actuator (21), which acts on the power tool as a function of the measured magnitude of the transverse force, is provided for transverse force compensation.

Abstract: The invention relates to a hand jig saw having a chucking device for a tool that can be moved back and forth, particularly a jig saw blade (15), the device having a centering piece (18) firmly connected to a drivable rod (13), the centering piece having an axial insertion slot (26) for a shank of the tool and at least one clamping body (19), which can be displaced in a transverse channel (27) extending transversely to the insertion slot (26) and immerses into the insertion slot (26), for clamping the shank (153). For displacement, the clamping body interacts with a chucking cam (28) configured on a chucking sleeve (20), which can be rotated relative to the centering piece (18), is disposed concentrically thereto and spring-loaded in the direction of rotation.

Abstract: A machine tool, in particular in the form of a handheld jigsaw, is equipped with an observation device that is pointed at the field of work of its working tool, whose sensor technology that is created in particular by a camera is connected by a transmission device with the output point of the observation device that is provided on the side of the housing.

Abstract: A power tool includes a housing, a rotary motor disposed in the housing, a jack shaft coupled to the motor and a spindle mounted in the housing for carrying a tool. A first wobble plate assembly is coupled to the jack shaft for driving the spindle to reciprocate at least approximately linearly in a linear path along a predetermined axis. A counterweight is mounted in the housing for performing a rotative reciprocating motion and pivoting relative to the housing about a pivot axis. The pivot axis is disposed in a plane perpendicular to the predetermined axis and fixed relative to the housing. A second wobble plate assembly is coupled to the jack shaft for driving the counterweight. The use of the counterweight results in no friction or restriction with a large stroke and large area, so that stability is improved, fitting of the counterweight is simple and cost is reduced.