Abstract: A power tool system has detachable and interchangeable implements and driving sources. The interchangeable implements and driving sources use a housing having common mating interface to selectively assemble a power tool having the desired characteristics. A latch is used to hold a selected implement and driving source in functional engagement. An adjustable bale handle provides a comfortable and safe handhold for various configurations of the interchangeable implements.

Abstract: A device for mounting a blade on a reciprocally movable blade carrier of a cutting tool includes a blade pressing member and a blade pressing surface formed on the blade carrier, so that the blade can be pressed against the blade pressing surface by the blade pressing member. A retainer member serves as a guide for the pressing member, so that the pressing member can move in a direction substantially perpendicular to the pressing surface between a first position for pressing the blade against the pressing surface and a second position for releasing the pressing force of the pressing member. An operation member is shiftable relative to the blade carrier and is operable by an operator for moving the pressing member between the first position and the second position. A ball is interposed between the pressing member and the operation member. A contacting surface is formed on the operation member, so that the ball can roll along the contacting surface.

Abstract: A light duty electric reciprocating handsaw includes a body assembly having a throat therein, a removably and reciprocally attached saw blade within the body assembly spanning the opening of the throat so that any workpiece that fits inside the throat can be cut across its width. The handsaw is either electrically or battery operated and includes an electric motor mounted within the body assembly, the weight of the motor being generally distributed over the saw blade. Preferably, the throat of the body assembly is generally defined by an upside down U-shaped configuration for receiving the workpiece therein after cutting with the saw blade. A balance of the weight is located generally over the saw blade, with the remainder of the weight of the unit being distributed generally evenly throughout the rest of the handsaw such that the operator will experience an aid in cutting the workpiece through the force of gravity.

Abstract: An orbital reciprocating saw comprising a housing, a motor, a spindle movably supported within said housing and having a front end adapted to support a saw blade, a reciprocating drive assembly, an orbital drive assembly connected to said spindle to selectively drive the saw blade in an orbital path, an orbital adjustment assembly connected to the orbital drive assembly to adjust the orbital path of the saw blade, and an adjustable shoe assembly. The orbital drive assembly includes an eccentric cam member removably supported on the motor drive shaft and engageable with the spindle to cause orbital movement of the saw blade upon rotation of the motor drive shaft. The orbital adjustment assembly selectively disengages the spindle from the cam member during at least a portion of the rotation of the cam member to change the orbital path of the saw blade.

Abstract: A hand-operated electric tool, especially a jigsaw, has a motor unit provided in the tool housing. The motor unit contains in a motor housing the stator and the rotor. One end of the rotor shaft projects from the motor housing and is mounted in two bearings fixed in the motor housing. A countershaft forms an extension of the rotor shaft and carries a toothed arrangement. The countershaft is coupled to the rotor shaft and is rotatably mounted in a bearing. The rotor shaft and countershaft engage axially with radial play and are coupled non-rotatably by co-operating radial projections and recesses receiving the projections. In the region of the overlapping portions of rotor shaft and countershaft, one of the shafts has an annular portion extending at least over a part of the circumference. The annular portion is substantially in line contact with an adjacent circumferential surface of the other shaft. The line contact permits misalignment of the rotor shaft and countershaft but reduces noise.

Abstract: A clamp for the blade of a hand held reciprocating tool includes a spindle coupled to the drive mechanism. A slot is formed in the spindle for receiving the blade tang and a collar is threadably received on the spindle. A blade clamping member is disposed between the collar and the blade and includes an engaging member for engaging a hole in the blade tang and a pair of ears which engage the upper and lower shoulders of the blade tang to provide three points of engagement when the collar is tightened. The clamp also includes a nose section which engages the blade at its junction with the tang to provide reinforcement against breakage.

Abstract: A reciprocating saw 11 with a keyless blade clamp 35 having a slotted-channel 37 in a clamp body 39 for receiving a blade 40 alternatively in first and second, intersecting cutting planes. The blade 40 may be alternatively oriented in four 90° offset orientations with the blade teeth facing in the same directions as the top, bottom, left and right side of the saw 11. When the retainer 53 is in the clamp disengaged position, a blade 40 may be slidably inserted and removed from the channel 37 in any of the four 90° offset orientations. A retainer 53 is located in a track 51 in the clamp body 39 and is movable between clamp engaged and disengaged positions. When the blade 40 is located in the first cutting plane, the retainer 53 engages the edge 55 of the blade. When the blade 40 is in the second cutting plane, the retainer 53 engages the sidewall 57 of the blade 40.

Abstract: The present disclosure relates to a jigsaw including a base, a housing pivotally movable relative to the base about a first axis that extends longitudinally along the base, and a motor positioned within the housing. The jigsaw also includes a blade coupled to the motor by a drive mechanism adapted for reciprocating the blade in an up-and-down motion. The blade is laterally supported by a blade guide connected to the base that is pivotally movable about the first axis. When the housing is pivoted relative to the base about the first axis, the blade guide also pivots about the first axis to inhibit binding between the blade and the blade guide.

Abstract: A reciprocating saw includes a structure for sealing a chamber (2a) which is defined by a gear housing (3) and a gear housing cover (4) fitted over the gear housing. The sealing structure includes a rubber packing (18) mounted along the entire length of the seam between the gear housing (3) and the gear housing cover (4). The rubber packing (18) is integrally formed with a V-shaped valve (19) such that a protrusion (20) at the bottom bend of the valve selectively opens and closes an air vent (21) formed in a partition wall (3a) of the gear housing (3). The sealing structure further includes a seal retainer (22) and a dust seal (24) provided between the gear housing (3) and the gear housing cover (4) and penetrated by a reciprocating slider (12). The seal retainer (22) and the dust seal (24) lubricate the slider and seal the chamber (2a) where the slider 12 penetrates the chamber.

Abstract: A reciprocating tool (e.g., a reciprocating saw) comprising a housing, a spindle mounted for reciprocating movement within the housing and having an end adapted to receive a saw blade, and a blade clamp mechanism connected to the spindle and adapted to attach a saw blade to the spindle. The blade clamp mechanism includes an actuating member mounted on the end of the spindle and capable of moving relative to the spindle between an engaged position and a disengaged position, and a locking member operatively associated with the actuating member and moveable relative to the spindle between a locked position that locks a saw blade to the spindle and an unlocked position that releases the saw blade.

Abstract: A hand-held power saw (10) having a housing (112) which includes a blade storage chamber (124) and a retaining member (130) for holding at least one spare saw blade (26) within the storage chamber. In one embodiment the retaining member comprises a rubber component having a pair of arms (136). Each arm has a groove (138) formed therein which holds a ball bearing (140). The ball bearings are biased into contact with one another once the retaining member is assembled into a housing portion of the tool within the storage chamber. When a spare saw blade is inserted into the storage chamber a portion thereof is urged between the ball bearings. The resiliency of the rubber arms causes the ball bearings to grasp the spare saw blade and retain it within the storage chamber. The opposite end of the blade engages a foam-like member (150) held within a recess (124c) at the opposite end of the storage chamber which prevents the blade from rattling within the chamber.

Abstract: Power-driven work tool including a shank (2, 3), a drive motor (4), and a working tool (1) driven by the motor. The working tool is rotatable around at least one axis perpendicular to the shank by a controller (8). The controller is attached to the shank and connected to the working tool or a bracket thereof by a wire or rod (10), which transmits pulling or pushing force. The motor (4) is at one end of the shank (2, 3) and adapted to drive the working tool (1) provided at the other end of the shank via a drive shaft extending through the shank. The shank is provided at the end thereof connected to the working tool with a hinge (6) for angular movement of the working means, and the drive shaft provided in the shank (2, 3) is connected to the working tool via a flexible shaft extending through the hinge (6).

Abstract: The present disclosure relates to a jig saw blade clamp including a first clamp member defining a main slot. A second clamp member is positioned within the main slot. The first clamp member is moveable relative to the first clamp member between a first position in which the first and second clamp members are adapted to clamp a blade, and a second position in which the blade can be inserted between the first and second clamp members. A collar is pivotally moveable in first and second opposite directions relative to the first and second clamp members. The collar includes a cam portion that moves the second clamp member toward the first position when the collar is pivoted in the first direction, and also moves the second clamp member toward the second position when the collar is pivoted in the second direction.

Abstract: A power tool has a housing that is surrounded in part by a rubber boot. The housing has an opening through which a fastener connects the housing a component of the housing. The boot has a plug portion formed on the inner surface that fits within the opening to seal the housing. The plug portion can have a seal lip followed by recesses to allow for pressure release.

Abstract: An air deflection system and method which is specifically designed for use with reciprocating saws of the type widely used for construction projects. Such reciprocating saws are known to produce so much air-borne particulate matter that they can be a hazard to the eyes, head and respiratory system of the user. The air-borne debris also makes it difficult for the user to see the work being cut. The design provides a slip-on cover for air exit ports which has the effect of deflecting air and hence the particulate matter in a direction away from the head of the user. The resulting effect is a safer and more efficient sawing operation which is accomplished with a low-cost and easy to install deflection shield.

Abstract: A hand-held reciprocating power tool, such as a reciprocating saw, wherein the angle of the reciprocation motion axis with reference to the longitudinal axis of the power tool motor housing is adjustable. Within a motor housing there is a motor driving a motor shaft which rotates on a motor shaft axis generally along the longitudinal axis. A nosepiece includes a nosepiece base portion fixed to the motor housing, and a nosepiece movable portion rotably mounted to the nosepiece base portion. The nosepiece moveable portion can be positionally adjusted relative to the nosepiece base portion over an angle of at least 180.degree. by rotation on a nosepiece axis which is perpendicular to the motor shaft axis. A reciprocating element is supported by the nosepiece moveable portion.

Abstract: A blade clamp assembly has a housing and a clamping lever to hold a blade for a reciprocating saw. The clamping lever rotates about a pin within a cavity formed in the housing. The clamping lever includes a body portion having a cam face and a handle portion integrally formed with the body portion and extending from the trailing portion of the cam face. As assembled, the handle portion extends slightly out from the edge of the housing. A plate is provided between the cam face of the clamping lever and the floor of the cavity. A torsion spring is provided to bias the cam face against the plate to hold a blade by the assembly. The handle portion is used to overcome the torsion spring.

Abstract: A method for gripping such objects as tool bits and other implements is an extension of principles employed by tool holders currently in use, which grip at one (primary) position along the shank length. This invention provides auxiliary gripping, or what I hereinafter call "back up gripping" at one or more positions in addition to the primary gripping position. A universal tool holder or handle is presented as one embodiment of the invention. The holder is an elongated cylindrical sleeve one end of which contains a gripping mechanism utilizing back up gripping. The other end of the holder allows for insertion of a strike rod which, when making contact internally with the gripped tool, transmits to the tool the impact of hammer blows made against the outer end of the rod. The gripping mechanism of the embodiment is comprised of two pairs of traversely adjustable screws which serve as jaws or grips. Each pair of jaws grips the shank in an orientation different from the gripping by the other pair.

Abstract: A saw blade clamp (1) comprises a body (3) defining a channel (13) for a saw blade (11), a retaining member (17), biasing means (19) for continuously urging the retaining member (17) towards the channel (13) to abut a saw blade (11) in use in the channel (13), and a release device (30) separate from the retaining member (17) and the biasing means (19). When activated the release device (30) acts on the retaining member (17) to move the retaining member (17) away from the channel (13) to allow a saw blade (11) to be entered into or removed from the channel (13).

Abstract: This invention is a tool for plunge cutting comprising a motor, a transmission connected to the motor and a blade assembly connected to the transmission, wherein the blades move in an oppositely reciprocating and sliding manner to provide plunge cuts of variable depth with closed ends and a continuous perimeter. The tool of the invention may be held and operated with one hand.

Abstract: A pneumatic power tool for reciprocating a blade to cut a workpiece. The power tool includes a body having a hollow interior and a passage extending through the body between the hollow interior and an opening in an exterior surface of the body. The interior has first and second ports spaced apart at first and second positions along a central axis of the interior for alternately admitting air into the interior. The tool also includes a connector to connect a pneumatic hose to the tool for delivering pressurized air to the tool. A throttle is positioned along the passage for selectively permitting pressurized air to flow through the passage, and a valve is also positioned along the passage for alternately directing air through one of the first and second ports to pressurize the interior at a corresponding one of the first and second positions.

Abstract: In a sabre saw machine (10), having a device (20; 120) for chucking the saw blade (22; 122) on the lower end of its reciprocating rod (18; 118), wherein a chucking tube (34; 134), disposed so as to be axially displaceable by rotation on the reciprocating rod (18; 118), has an inward-protruding encompassing collar (42; 142) on its free lower end, the collar having a through opening (44; 144) and a radial slot (45; 145); wherein the collar (42; 142) in the chucking position is braced axially against lugs (68; 69; 168, 169) of the chucking end (23; 123) of the saw blade (22; 122) and thus puts it in contact with the lower face end of the reciprocating rod (18; 118) or keeps it pressed against a resilient centering piece (56; 156); wherein the reciprocating rod (18; 118) is guided in one upper and one lower reciprocating rod bearing (26, 27; 26', 27'), the guidance of the reciprocating rod (18) is improved in that the reciprocating rod (18; 118) is guided in the lower reciprocating rod bearing (27) by means of th

Abstract: A cut alignment device for a rotary saw having a motor which spins a cutting unit which includes a rotary shaft driven by the motor, a circular blade having a central aperture through which the shaft fits, and a blade mounting device for holding the blade on the shaft, the cut alignment device including: a battery power source carried by the cutting unit; and a beam light source, operatively connected to this power source, and carried by the cutting unit; wherein the light source projects a light beam from the cutting unit directed along the cutting edge of the blade to assist the operator in cutting accurately.

Abstract: A saw blade clamping arrangement particularly for power reciprocating saws and similar tools having a reciprocating shaft connected to a cutting member includes a locking member and a locating pin which cooperates to prevent inadvertent removal of the saw blade. The saw blade clamping arrangement further includes a support member carried by the drive shaft for movement therewith. The support member at least partially defines a longitudinal slot for receiving the saw blade. The locating pin extends into the longitudinal slot and is adapted for partial insertion into the aperture from a first side of the saw blade. The locking member, which in the preferred embodiment is a spherical bearing, is operative for selectively engaging the saw blade with the drive shaft. The locking member is movable to a locking position in which the locking member is partially inserted into the aperture from a second side of the saw blade.

Abstract: An in-line oscillating cam assembly which includes a housing, a cam shaft having a longitudinal axis, and a pair of eccentric drive cams longitudinally spaced apart from each other and mounted on the cam shaft eccentrically out of phase. The pair of drive cams have opposed circumferential chamfered surfaces oriented at an inclined angle relative a plane perpendicular to the longitudinal axis of the cam shaft. The cam shaft is supported upon the housing and is also rotatable about the longitudinal axis. Further included in the assembly is a follower shaft spaced apart from and parallel to the drive shaft, and a cam follower longitudinally fixed to the follower shaft and extending between the pair of drive cams. The cam follower has a pair of opposed frustoconical follower-surfaces engaging the chamfered surfaces of the pair of drive cams. Thus, rotating one of the cam shaft and follower shaft causes the other one of the cam shaft and follower shaft to axially oscillate.

Abstract: A low vibration motion translation system for converting continuous rotary motion into reciprocating linear motion employs a counterweight or counterbalance mechanism moving in the opposing direction to the reciprocating linear driver or piston to reduce vibration. As the counterbalance is driven linearly in the opposing direction to the reciprocating piston, opposing forces are generated to counteract the unbalanced forces created by the translation, with a resultant reduction in vibration.

Abstract: A saw blade clamping arrangement particularly for power reciprocating saws and similar tools having a reciprocating shaft connected to a cutting member includes a biasing member preferably in the form of a spring clamp member. The biasing member is interconnected with the drive shaft and operative for providing a biasing force to retain the cutting member in operative connection with the drive shaft. A release lever is pivotally mounted to a housing of the saw for movement between first and second position. In the first position the release lever is spaced apart from the biasing member. In the second position the release lever engages the biasing member and opposes the biasing force of the biasing member to permit quick and easy removal and replacement of the saw blade. The spring clamp member biases the saw blade into operative engagement with the drive shaft. In a second preferred embodiment, the spring clamp member biases a locking member into engagement with the saw blade.

Abstract: An air-tight sealing arrangement used in a handy pneumatic power saw comprised of a casing, an actuating member mounted in an actuating chamber in the casing, an end block unit fastened to one end of the casing and coupled to the actuating unit, a saw blade connected to a piston rod of the actuating unit, and a trigger for operation control, the air-tight sealing arrangement including an annular metal member mounted around the piston rod of the actuating unit and retained between an air cylinder of the actuating unit and a front side wall of the actuating chamber of the casing, and a flexible sealing gasket mounted around the piston rod of the actuating unit and retained between the annular metal member and the front side wall of the actuating chamber.

Abstract: A toolless blade clamp is disclosed for mounting a saw blade to the drive shaft of a reciprocating saw, such as a jigsaw. The clamp has a housing formed with a channel into which the blade may be inserted and an inclined track along which a roller is movable. The roller is biased by a spring into engagement with the blade during operation of the reciprocating saw. A release device, also attached to the spring, is pivotally mounted to the housing and may be rotated against the spring load from a locked position adjacent the housing to an unlocked position away from the housing. A pair of elongated links are pivotally connected to the release device and pivotally support the roller therebetween. The links act to translate rotation of the release device to movement of the roller, such that rotation of the release device to the unlocked position pulls the roller away from the blade allowing the blade to be removed from the channel.

Abstract: A blade mounting device is operable for mounting a blade on a drive shaft of a cutting tool which is moved in a predetermined motion for a cutting operation. The blade mounting device includes an operation knob mounted on a body of the cutting tool and adapted to be rotated by an operator. An actuation rod is mounted on the drive shaft and is movable with the drive shaft and rotatable relative to the drive shaft. A holder device is mounted on the drive shaft for holding and releasing the blade in response to the rotation of the actuation rod relative to the drive shaft. A connection member is rotatable with the operation knob and is disposed on the same axis as the actuation rod. A connecting mechanism is provided for connecting the connection member and the actuation rod to each other, so that the connection member and the actuation rod are axially movable relative to each other and are rotatable together with each other.

Abstract: A saw tool comprises a housing for incorporating a driving device therein, a base attached to the housing, a driving arm connected to the driving device to effect a reciprocating orbital motion, and a saw blade attached to the driving arm and extending through a slit in the base. The saw blade has a first saw tooth section formed on a top end thereof for biting a workpiece and a second saw tooth section formed on one side thereof. A rectangular through-hole can be accurately and rapidly formed in a workpiece such as a plaster board or veneer board, etc., with this saw tool.

Abstract: In a saber saw machine having a device for chucking the saw blade a locking device is provided which firmly holds a chucking tube relative to a reciprocating rod in the release position for the saw blade, and which by the insertion of the saw blade into the device releases the chucking tube again.

Abstract: According to one aspect of the invention, a reciprocating saw 21, 154 comprises a housing 23, 154 pivotable about a first axis 29. A blade holder 49 is mounted for reciprocation along a second axis 53 perpendicular to the first axis. An angular blade drive train 61 is directly connected between a motor 43 and the blade holder. The angular blade drive permits the blade axis of reciprocation 55 to be adjusted in a plane parallel to the saw sidewalls 177. Drive train 61 consists solely of a rotary section 63 and a reciprocating section 65. The rotary section is connected directly between the motor and the reciprocating section. The reciprocating section is connected directly to the blade holder. According to a second aspect of the invention, a reciprocating saw 21,154 comprises a housing 23, a drive train 61, a blade holder 49, and a connector 59. Blade holder 49 is rotatably mounted in connector 59 for rotation about an axis 53 parallel to and spaced from an axis 55 of reciprocation of output bar 57.

Abstract: The saw includes a frame having an opening with a pair of proximate and distal blade retaining chucks located on respective sides of the opening. A saw blade is retained between the pair of chucks. A plurality of pulleys are attached in spaced relation to the frame including pulleys on opposed sides of the opening. A flexible band is entrained about each of the plurality of pulleys, with the band having a first end operatively connected to the proximate blade retaining chuck and a second end attached to the distal blade retaining chuck. A reciprocating drive is attached to the proximate blade retaining chuck. The reciprocating drive and the flexible band work in conjunction to pull the blade in opposite directions during each cycle of the drive. An alternative embodiment of the present invention may take the form of a stationary table saw.

Abstract: A clamp for the blade of a hand held reciprocating tool includes a spindle coupled to the drive mechanism. A slot is formed in the spindle for receiving the blade tang and a collar is threadably received on the spindle. A blade clamping member is disposed between the collar and the blade and includes an engaging member for engaging a hole in the blade tang and a pair of ears which engage the upper and lower shoulders of the blade tang to provide three points of engagement when the collar is tightened. The clamp also includes a nose section which engages the blade at its junction with the tang to provide reinforcement against breakage.

Abstract: A ring blade and drive system, and method of using same, for harvesting bone-tendon-bone ligament grafts having substantially cylindrical bone plugs. The ring blade disclosed is a circular ring having a predetermined arcuate gap formed in its periphery. The drive system includes a blade holder to peripherally hold the ring blade and a fixed-center oscillating mechanism to oscillate the ring blade about its axis within a predetermined arcuate range of motion. The ring blade structure enables the production of a substantially cylindrical bone plug of unlimited length. Harvesting of a bone-tendon-bone ligament graft is facilitated with the ring blade and method disclosed which enables the ring blade to be placed partially around a tendon segment to create bone plugs aligned with the tendon fibers included in the defined tendon segment. The cuts into the bone may be initiated into the bone at either end of the tendon segment from the tendon side through to the exterior of the bone to which the tendon is attached.

Abstract: A hack-saw that consists of a powered motor encased in a housing unit with a handle for gripping by the operator. Extending out from the top of the handle is an elongated bar which runs out forward from the motor housing unit to which depends a leg parallelly disposed relative to the motor housing. Extending out from the bottom of this leg is a rod, spring and nut assembly parallel in line to the elongated bar. One end of the metal hack-saw blade is removably attached to the rod, spring and bolt assembly and the other end of the blade is removably attached to the reciprocating output member of the motor extending out from the bottom of the motor housing which when running moves back and forth, causing a sawing motion. In another embodiment the rod, spring and nut assembly includes an anti-rotational structure to assure the hack-saw blade reciprocates aver a constant path of travel to avoid misalignment.

Abstract: A synchronized reciprocating sawing device having at least one drive plate, saw retaining plates, and a plurality of blades which exhibit little or no vibration during the application of high torque and high revolutions. This device is comprised of one or more drive plates mounted between two mounting blocks which contain grooves that form a channel within which saw retaining plates are constrained to move as a reciprocating force is transmitted from at least one drive plate to saw retaining plates. The force is transmitted in a plane defined by the plane of each drive plate and the saw retaining plates to which each of said driving plates is operatively attached.

Abstract: A reciprocating saw (11) comprises a support (27) attached to the body of the saw and a shoe (25) pivotally attached to the support (27). The pivoted shoe (25) enables the shoe (25) and thus the blade to engage a workpiece at varying angles during cutting. The shoe (25) is attached to the support (27) by a hinge. The hinge (12) comprises a spaced pair of tabs (29,31) extending from the support (27) and located between a spaced pair of tabs (45,47) extending from the shoe (25). Each of the support tabs is paired respectively with one of the shoe tabs. Pins (55,57) extends through apertures (33,35,49,51) in the tabs (29,31,45,47) and forms the hinge pivot. The hinge pivot is maintained in place by spacers (59,61) located, respectively, between each pair of shoe and support tabs and press fitted to the pin. The press fitted hinge (12) is low in cost and is durable.

Abstract: A saw blade clamping arrangement particularly for power reciprocating saws and similar tools having a reciprocating drive shaft connected to a cutting member such as a saw blade includes a clamping member movable relative to the drive shaft between a clamped position and a release position. A threaded fastener passes through an aperture formed in a portion of the clamping member and functions to move the clamping member to its clamped position upon selective rotation. A sleeve surrounds the threaded fastener for rotation therewith. When the sleeve is biased against the clamping member through the force of a biasing member, opposing surfaces prevent rotation of the sleeve.

Abstract: A hand-held reciprocating power tool, such as a reciprocating saw, wherein the angle of the reciprocation motion axis with reference to the longitudinal axis of the power tool motor housing is adjustable. Within a motor housing there is a motor driving a motor shaft which rotates on a motor shaft axis generally along the longitudinal axis. A nosepiece includes a nosepiece base portion fixed to the motor housing, and a nosepiece movable portion rotably mounted to the nosepiece base portion. The nosepiece moveable portion can be positionally adjusted relative to the nosepiece base portion over an angle of at least 180.degree. by rotation on a nosepiece axis which is perpendicular to the motor shaft axis. A reciprocating element is supported by the nosepiece moveable portion.

Abstract: A powered jig saw comprises a holder for a saw blade at the lower end of the reciprocating drive shaft. The holder is adjustable, by rotation of an actuating section, between an open position and a closed position for holding the saw blade. The actuating section comprises, in the interior of an upwardly open tube portion of the drive shaft, an engagement surface which, for the purpose of rotating the actuating section, engages with a working surface of a rotatable adjustment device which is stationary when the drive shaft is driven. The upper end portion of the drive shaft is mounted, so as to be capable of axial displacement, in a guide bush, above which there is a holding device of the adjustment device, in which holding device there is fixed a downwardly extending element comprising the working surface. A pendulum mechanism serves to generate a swivelling movement of the drive shaft.

Abstract: The blade holder includes a mounting portion for attachment to the reciprocating plunger of a power saw. The blade holder also includes an integral exposed portion provided with a slot for receiving a substantial portion of the shank of the blade. The slot is dimensioned with respect to the blade shank such that an edge of the blade shank projects from the slot. The exposed portion of the blade holder includes an external surface in opposed relationship with the slot. A resiliently biased wedging washer engages the exposed edge of the blade and the external surface for holding the blade in place.

Abstract: The present invention describes an adaptor primarily intended for attaching a door jamb saw blade to a reciprocating tool. The adaptor includes a rigid and generally U-shaped structure having first and second substantially parallel and generally opposed side portions extending from a central base portion, with the first side portion extending a predetermined length from the base portion and having a predetermined thickness and a predetermined width, the second side portion extending a second predetermined length from the base portion and having a substantially planar surface along a side thereof distal from the first side portion, with the distal surface being generally normal to a plane defined by substantially parallel axes extending through the first and second portions.

Abstract: A saw blade clamping arrangement particularly for power reciprocating saws and similar tools having a reciprocating shaft connected to a cutting member includes a biasing member preferably in the form of a spring clamp member. The biasing member is interconnected with the drive shaft and operative for providing a biasing force to retain the cutting member in operative connection with the drive shaft. A release lever is pivotally mounted to a housing of the saw for movement between first and second stable position. In the first position the release lever is spaced apart from the biasing member. In the second position the release lever engages the biasing member and opposes the biasing force of the biasing member to permit quick and easy removal and replacement of the saw blade. In one preferred embodiment, the spring clamp member biases the saw blade into operative engagement with the drive shaft.

Abstract: A reciprocating saw having a main body and a spindle mounted in the main body and movable between a retracted position and an extended position. The saw further includes a biasing member operatively associated with the spindle. The biasing member can include a spring that acts on an inner end of the spindle to bias the spindle toward either the extended position or the retracted position.

Abstract: A hand power tool comprises a motor housing, a foot plate adjustably arranged on the motor housing, a chip removing tool, a suction device for aspirating chips and dust and provided in a space between the motor housing and the foot plate, a clamping device adjustably mounting the foot plate on the housing and an outwardly accessible handle. The clamping device is connected with the outwardly accessible handle by force reducing actuating members which include an overrunning coupling.

Abstract: A motion converter comprising a drive head mounted eccentrically onto a drive shaft, and which is eccentrically displaced when the drive shaft rotates. The converter additionally comprises a displaceable transmission element and a displaceable tool holder holding a tool. The transmission element and tool holder are moved to-and-fro when the drive shaft is rotated. The excursion of the to-and-fro motion is adjustable by pivot means, preferably a first pivot pin, displaceably affixed to a housing and connecting the transmission element to the housing.

Abstract: A reciprocating saw including a housing, a spindle mounted for reciprocating motion within the housing, a gear rotatably mounted within the housing, a wobble shaft rotatably mounted within the housing, a wobble plate rotatably mounted on the wobble shaft and connected to the spindle, and a clutch drivingly connecting the gear to the wobble shaft. The clutch includes a clutch driver rotatably positioned within the housing adjacent the wobble shaft, and the clutch driver includes a recess for insertably receiving a portion of the wobble shaft. The clutch driver can also include a relief ledge for providing clearance between the clutch driver and the wobble plate. The clutch can further include a first clutch disk connected with the gear and positioned between the gear and the clutch driver, and a second clutch disk connected with the clutch driver and positioned between the gear and the first clutch disk.

Abstract: A saw blade retention system for retaining a saw blade to a reciprocating saw includes a shaft connected to the saw for reciprocation and having a slot for receiving the saw blade. The saw blade retention system also includes a chuck disposed about the shaft and having a slot aligned with the slot in the shaft in an unlocked position for allowing the saw blade to be disposed in the slot for the shaft. The saw blade retention system further includes a cam-type mechanism for allowing the chuck to rotate angularly relative to the saw blade and shaft to a locked position to prevent the saw blade from exiting the slots and for allowing the chuck to move axially relative to the shaft to prevent axial movement of the saw blade between the chuck and the shaft. Complementary inclined surfaces are provided on the blade and the chuck to center the blade relative to its intended path of reciprocation.