Abstract: Fanned air generated by a fan to cool a motor is discharged from a housing through fanned air discharge ports toward an opening formed in a base. The fanned air discharged toward the opening is then introduced into a groove in fluid communication with the opening. The groove is formed in a bottom surface of the base and has an open side at a front side of the base. The fanned air is then discharged from the front side of the base, blowing off saw dust on a cutting object so as to prevent dust from accumulating on a marking line on the cutting object.

Abstract: An electrical power tool includes a locking device (31) for securing the working tool (3) on a motor-driven shaft (2), a switch (7) for turning the shaft driving motor (M) on and off, a device (10) for braking the shaft (2), a safety element (8) connected with the braking device (10) and the switch (7) and having a safety position that corresponds to the braking position of the braking device (10) and a position of the switch (7) in which the switch (7) cannot turn the shaft driving motor (M) on, and a release position that corresponds to the release position of the braking device (10) and a position of the switch (7) in which the switch (7) turns the shaft-driving motor on, and a locking mechanism (21) operatively connected with the safety element (8) and the locking device (31) and displaceable between a locking position which corresponds to an unlocking position of locking device (31) and in which the safety element (8) is retained in its safety position thereof, and a release position in which the locking

Abstract: A spring loaded diamond shaped arbor for use in a saw blade. The arbor includes comprised of a diamond shaped plate having four peripheral side walls with four corners therebetween that separate the four side walls. The arbor has a central opening that is configured and adapted to allow the arbor to be attached to a power tool. A slot extends from the central opening through one of the side walls or corners so that the arbor can easily be inserted into and removed from a saw blade. The slot allows the arbor to be compressed like a spring and be retained within the central opening in the saw blade.

Abstract: A circular saw including a motor housing having a first end portion and a second end portion, a motor assembly disposed within the housing, a rotary blade assembly having a predetermined weight mounted to the first end portion of the motor housing, and a battery pack having a predetermined weight disposed on the second end portion of the motor housing. The battery pack and the rotary blade assembly are configured and arranged to be in longitudinal alignment with one another, and the longitudinal alignment of the battery pack with the rotary blade assembly promotes counterbalancing between the predetermined weight of the rotary blade assembly and the predetermined weight of the motor housing.

Abstract: An undercut saw (10) having a central axis (11) generally comprises a cutting assembly (20) and a base (60). Cutting assembly (20) comprises case (30) housing electric motor (24) driving blade (50). Base (60), supporting cutting assembly (20) above a support surface, comprises cylindrical sleeve (63), supporting case (30) such that central axis (11) is vertical, and shroud (61) terminating in foot (98) for resting on a support surface. Case (30) and sleeve (63) are cooperatively adapted such that case (30) may be selectively moved vertically within sleeve (63) and retained in the selected position so as to adjust the height of blade (50) relative to foot (98). Vacuum attachment (100), immediately adjacent cutting area (53) to maximize collection, vacuums cuttings from blade cavity (97). Blade guard (132) rotates to an extended position covering cutting area (56) of blade (50) so as to include cutting area (56) in blade cavity (97).

Abstract: A method of assembling a power tool, a power tool, a method of assembling an electrical device, and an electrical device includes a switched reluctance motor. The electrical device is preferably a hand-held power tool, however, any type of electrical device that includes a switched reluctance motor may benefit from any number of aspects of the invention. In one independent aspect, the invention provides a construction that reduces tolerance stack-up. In another independent aspect, the invention provides a self-contained electronics package that plugs into a switched reluctance motor to provide control operation of the switched reluctance motor. In another independent aspect, the invention provides enhanced cooling that increases the efficiency of the electrical device using a switched reluctance motor. In another independent aspect, the invention provides an encapsulated magnet that allows for contaminant free motor control over the life of the SR motor.

Abstract: A portable circular saw includes a base and a saw unit having a circular saw blade. The saw unit is coupled to the base, so that the saw unit can laterally incline relative to the base. The saw unit can be fixed in a lateral inclining position relative to the base by a tightening device. A stopper device can define a maximum lateral inclining angle of the saw unit and includes a stopper and an engaging mechanism for engaging the stopper. The stopper can move with the saw unit. The engaging mechanism is adapted to engage the stopper when the saw unit is in a first maximum inclined position and when the saw unit is in a second maximum inclined position that is greater than the first maximum inclined position.

Abstract: The subject of this patent application, the Sill Saw, is an application-specific handheld circular power saw that affords the replacement of narrow frame windows, usually aluminum frame windows, with windows having thicker (deeper) frames, without the removal of the window casing materials or associated inside window moldings. This handheld power tool is specifically designed for the purpose of sawing window casing boards to a narrower width without removing them from the structure. There is no other method of accomplishing this, short of disassembling the window components, installing the new window, modifying the removed components and reinstalling them. Current, general purpose, handheld power saws cannot cut the window casing boards completely to the corners; that is, to their intersections with one another. This can be accomplished using the subject of this patent application, the Sill Saw.

Abstract: A wrenchless clamp assembly is provided to secure a tool disc, such as a circular saw blade, to a shaft of a power tool. The blade clamp assembly includes an outer flange positionable against an outer side of the blade and a manually tightenable click bolt that includes a movable click member operable to selectively engage the outer flange for rotationally locking or unlocking the bolt. In an embodiment, the click member moves alternatingly between axially engaged and disengaged positions according to sequential rotational increments of the click member relative to the bolt body. Accordingly, the click bolt can be installed by hand and rotationally locked without a need for high torque, and the click bolt can be easily removed by hand when the click member is moved to the disengaged position, axially free from the outer flange. In an embodiment, the click bolt permits limited torque applied during installation.

Abstract: An undercut saw (10) having a central axis (11) generally comprises a cutting assembly (20) and a base (60). Cutting assembly (20) comprises case (30) housing electric motor (24) that drives shaft (40), upon which saw blade (50) is mounted. Base (60) supports cutting assembly (20) above a support surface and comprises cylindrical sleeve (63) supporting case (30) such that central axis (11) is vertical, horizontal portion (94), and vertical leg portion (96) extending down from the periphery of horizontal portion (94) and terminating in foot (98) for resting on a support surface. Case (30) and sleeve (63) are cooperatively adapted such that case (30) can be selectively moved vertically within sleeve (63) and retained in the selected position so as to adjust the height of blade (50) relative to foot (98). In a first preferred embodiment, case (30) and sleeve (63) include cooperating screwing devices for adjusting blade (50) height. Line cord (26) departs motor assembly (22) along central axis (11).

Abstract: A device for cutting floors that attaches to the arbor on a circular saw, including an extension shaft, and an outer brace to support the extension shaft. The extension shaft extends past the outer brace a distance sufficient to permit a small trim blade, with a guard to fit under a cabinet toe kick. The small blade is held on the end of the extension shaft and is provided with a small guard. The device allows a user to place the circular saw on a floor and to position the small blade under the toe kick against the cabinet bottom to cut a line in the floor along the base of the cabinets. In one embodiment, the base plate of the circular saw is removable to allow slightly greater cutting depth. The saw attachment allows a worker to cut through a floor and sub floor around base cabinets.

Abstract: A battery (4) driven circular saw includes a housing (1a) with a motor (3) for driving the circular saw blade (2). The circular saw blade (2) is fixed to a drive shaft (7) that runs transverse to the plane (E) of the circular saw blade (2), the drive shaft being functionally connected by means of a linkage (15) to the motor (3). In order to achieve the most compact construction possible of the circular saw, the axis of rotation (R) of the motor (3) runs parallel to the plane (E) of the circular saw blade (2).

Abstract: The invention is an attachment for a stationary power saw, attaching to an operationally non-moving base or frame member of the power saw, as opposed to the retractable saw blade portion of the power saw, providing a fully adjustable laser cutting guide for designating the strike point of the rotating saw blade on the material being cut by the saw blade.

Abstract: The invention is based on a machine tool receptacle with a slaving device (12, 14, 16, 300), by way of which an insert tool can be operatively connected to a drive shaft (54), wherein the insert tool is operatively connectable to the slaving device (14, 16, 300) via at least one detent element (24, 26, 302), supported movably counter to a spring element (20, 22), which detent element snaps into place in an operating position of the insert tool and fixes the insert tool by positive engagement.

Abstract: A power tool (20) is provided. The power tool includes a housing (22), a base plate (28) coupled to the housing and having a base plate width. The power tool also includes a motor assembly (24) attached to the housing and coupled to a tool connector adapted to releasably receive a tool (74). The motor assembly and housing having a width W that is at most substantially equal to the base plate width. Further, the motor assembly having a length (86) and diameter (84) ratio that is at least 1:1.5.

Abstract: An undercut saw (10) having a central axis (11) generally comprises a cutting assembly (20) and a base (60). Cutting assembly (20) comprises case (30) housing electric motor (24) driving blade (50). Base (60), supporting cutting assembly (20) above a support surface, comprises cylindrical sleeve (63), supporting case (30) such that central axis (11) is vertical, and shroud (61) terminating in foot (98) for resting on a support surface. Case (30) and sleeve (63) are cooperatively adapted such that case (30) may be selectively moved vertically within sleeve (63) and retained in the selected position so as to adjust the height of blade (50) relative to foot (98). Vacuum attachment (100), immediately adjacent cutting area (53) to maximize collection, vacuums cuttings from blade cavity (97). Blade guard (132) rotates to an extended position covering cutting area (56) of blade (50) so as to include cutting area (56) in blade cavity (97).

Abstract: An undercut saw (10) having a central axis (11) generally comprises a cutting assembly (20) and a base (60). Cutting assembly (20) comprises case (30) housing electric motor (24) that drives shaft (40), upon which saw blade (50) is mounted. Base (60) supports cutting assembly (20) above a support surface and comprises cylindrical sleeve (63) supporting case (30) such that central axis (11) is vertical, horizontal portion (94), and vertical leg portion (96) extending down from the periphery of horizontal portion (94) and terminating in foot (98) for resting on a support surface. Case (30) and sleeve (63) are cooperatively adapted such that case (30) may be selectively moved vertically within sleeve (63) and retained in the selected position so as to adjust the height of blade (50) relative to foot (98). In a first preferred embodiment, case (30) and sleeve (63) include cooperating screwing means for adjusting blade (50) height. Line cord (26) departs motor assembly (22) along central axis (11).

Abstract: A battery powered circular saw is provided with a novel motor housing and handle assembly having a rearwardly extending primary handle inclined 15° to 40° relative to a rearwardly longitudinally extending tubular housing member. A battery pack is attached to the rear end of the primary handle and is provided with an elongated projection which extends into the elongate tubular housing.

Abstract: A floating bench saw guide for guiding a portable circular saw along a workpiece while sawing the workpiece, has a cradle for retaining a portable circular saw, a saw plane across the cradle, and a guide lip movably affixed to the cradle. A pair of gage blocks are affixed to the cradle along the saw plane. The gage blocks are advantageous for allowing the use of a straight edge for easily positioning the blade of a circular saw along the saw plane. In another feature of the invention, a pair of spaced-apart parallel rails are affixed to the cradle. The guide lip is movably affixed to the rails and is reversible relative to the saw plane. The guide lip overhangs its mountings to the rails such that it is positional relative to the saw plane over a distance which is longer than the length of the rails.

Abstract: A metal cutting circular saw is provided with an upper blade guard which includes a first sight window disposed in a first side surface and disposed in a plane angularly offset from a plane of the blade. The upper blade guard also includes a second sight window disposed in the second side surface of the upper blade guard. A light window is disposed in a front portion of the perimeter outer surface of the upper blade guard. The upper blade guard is made from metal and the first and second sight windows and the light window are integrally formed as a one-piece member. The saw shoe and lower blade guard are configured to minimize chip spray from contacting a user.

Abstract: A kerf deflector for a circular saw mounted by wedging the deflector between a mounting bolt on the saw and a lip on the table of the saw. The deflector is constructed of clear plastic sections enabling the user to align the advancing blade with the cut line on the board. One section scoops up air from the rotating blade and directs the air between another section and the board surface being cut. The narrowing construction of the air passage strengthens the stream of air on the basis of the venturi principle.

Abstract: A power tool includes a motor, an arbor driven by the motor, a rotatable cutting tool disposed on the arbor and having a rotational axis, the cutting tool further having a hole, first and second clamps connected to the arbor and clamping the blade, wherein one of the cutting tool and at least one of the first and second clamps and arbor have a first drive surface for contacting a second drive surface on the other of the cutting tool and the at least one of the first and second clamps and arbor, the second drive surface being movable between a first position contacting the first drive surface and a second position bypassing the first drive surface. The second drive surface is resiliently connected to the other of the cutting tool and the at least one of the first and second clamps and arbor. At least one metal strip connects the second drive surface to the other of the blade and the at least one of the first and second clamps and arbor.

Abstract: In combination with an air tool having an air motor, an air motor body, an angle head drive means connected to the air motor and body, and a cutting wheel and axle assembly connected to the drive means, the improvement for making a straight cross-sectional cut through a cylinder which includes a feed lever, having a pivot point, a first end extending above the cutting wheel, and a second end extending below the air motor body as a handle for applying a pressure while the air tool is in use, the feed lever being pivotally mounted on the housing at the pivot point such that the first end guides the wheel through the cross-sectional cut when a pressure is applied to the second end by hand.

Abstract: There is provided a mounting member to be detachably screwed onto the rotary shaft of a power tool, and during the attachment and detachment of the mounting member to and from the power tool, a part for clamping and integrally securing a rotary cutter between an inner flange and an outer flange which functions as a lock nut is constructed by fitting a claw of the inner flange onto a fitting groove formed in the outer flange. Owing to this construction, it is possible to highly precisely and integrally secure the mounting member to individual rotary cutters.

Abstract: A movable handle for a power tool. The power tool comprises a housing, a motor supported by the housing and operable to drive a tool element about an axis, and a handle supported by the housing for rotation relative to the housing about the axis. Preferably, the power tool is a circular saw. The circular saw further comprises a switch assembly supported on the handle for movement with the handle and means for connecting the switch to the motor to accommodate movement of the switch relative to the motor. The switch assembly is electrically connectable to the motor and selectively connects the motor to a power source, and the connecting means includes a wiring arrangement. The circular saw further comprises a locking assembly for locking the handle in a position relative to the housing.

Abstract: A platen for supporting a wooden workpiece relative to cutting heads of a planing machine, said platen having an upper surface and a lower surface and said platen being integrally composed of a fiber reinforced composite material.

Abstract: A quick-action locking device for an electric power tool including a locking spindle (4) axially displaceable in the hollow spindle (2) of the electrical power tool between a working tool locking position and a working tool exchange position, and a locking lever (6) provided at the end of the locking spindle remote from the working tool and having a slider cooperating with the locking spindle (4) for displacing the same, upon a pivotal movement of the locking lever (6), to its tool exchange position, with the slider (8) having a contact region engageable with a contact surface provided at the end of the locking spindle (4) remote from the working tool (3), and with the contact surface of the locking spindle (4) having an extent, in a pivotal direction of the locking lever (6), corresponding to at least the radial distance (a) of the contact region from the pivot axis (9) of the lever multiplied, in the locking position of the locking lever (6), by a sin (&agr;) of an angle formed by a line, which defines the

Abstract: An electrical power tool including a motor-driven shaft (2) for supporting a circular working tool (3), a switch (7) for turning a shaft driving motor on and off, a device (10) for braking the shaft (2), a safety element (8) having a safety position, in which it actuates the braking device (10) and prevents turning of the shaft driving motor on, and a release position, in which it deactuates the braking device (10) and provides for turning of the shaft driving motor on, and a locking mechanism (21) having two positions, in which the safety element (8) respectively, is retained in its safety position and occupies its release position.

Abstract: A circular saw having an improved line-of-sight. The circular saw comprises a motor for rotatably driving a saw blade about an axis to cut a workpiece, a bevel angle being defined between the cutting plane of the saw blade and a surface of the workpiece; a housing supporting the motor; a shoe plate supporting the circular saw on the workpiece to be cut, the shoe plate being pivotably connected to the housing to adjust the bevel angle; a main handle supported by the housing; an auxiliary handle supported by the housing; and an indicator for indicating the bevel angle. Preferably, the main handle, the auxiliary handle and the indicator are arranged so that, in the cutting position, the operator can view the saw blade as the saw blade cuts the workpiece and can view the indicator. The operator holds the main handle with one hand and the auxiliary handle with the other hand.

Abstract: A manually operated, electrical power tool, including a motor-driven shaft (9) located in the tool housing (1) and to which a working tool (9) is securable with a locking device having a locking and release positions in which the working tool (9) is secured on or is freely supported on the shaft (9), a braking member (17) secured on the shaft (19) for interrupting 7rotation of the shaft (19) in the release position of the working tool locking device; and a latch mechanism for positively engaging the braking member in the release position of the working tool locking device for blocking rotation of the shaft.

Abstract: An electric power tool has a motor-driven circular tool that can be clamped by means of a clamping device. A mechanical braking device (2) serves to brake the tool. A safety element (4) prevents improper handling of the electric power tool. In a safety position, the safety element (4) prevents the motor from being turned on and activates the braking device (2). In a release position, the safety element (4) allows the motor to be turned on and the braking device (12) is released. An additional locking mechanism prevents that a clamping lever, needed to actuate the clamping device, can be actuated in the clamped state in the safety position. In the release position of the safety element, the locking mechanism is unlocked.

Abstract: A portable circular saw includes a base. A saw blade has a portion projecting downward from the base. A saw-blade cover conceals at least a part of the saw blade. A projection provided on the saw-blade cover protrudes in a direction away from the saw blade. The projection has a lower surface extending across a first plane which is parallel to an axis of rotation of the saw blade, and which contains a tangent to an outer circumference of the saw-blade at a point of intersection with a second plane including a lower surface of the base. Chips fly from the point of intersection along a direction in the first plane. The lower surface of the projection inclines relative to a line perpendicular to the tangent so as to change a path of a portion of flow of the chips toward a forward side as viewed in a cutting direction.

Abstract: A machine tool, with a stop plate (2, 21), a working unit having a disk-shaped cutting tool (1, 17) and a driving mechanism (3), is connected pivotally with the stop plate (2, 21) for making angular and miter cuts. By means of several connecting link guides (4), mounted at the stop plate (2, 21), it is ensured that the cutting characteristics of the machine tool are independent of the pivoted position.

Abstract: A dust and particle control attachment for a saw having a housing and a rotary blade secured for rotation on a shaft extending from the housing comprising a rotary blade guard enclosing a portion of the rotary blade having one side thereof secured to the housing and the other side thereof removably secure to the one side to form a passageway for dust and particles produced during a cutting operation, the passageway having an intake end and a discharge end, a first arrangement is associated with at least one of the side and the other side of the rotary blade guard adjacent the intake end of the passageway to enable cutting inside corners of walls disposed at a predetermined angle with respect to each other both horizontally and vertically, and a second arrangement associated with at least one of the one side and the other side of the rotary blade guard to contain the dust and particles within the passageway and to direct the dust and particles to a collection means connected to the rotary blade guard adjacent

Abstract: Portable circular saws are taught that may include a base and a saw unit pivotally coupled to the base. The saw unit may have a circular saw blade that is adapted to laterally pivot relative to the base. A stopper may be provided to allow an operator to selectively stop the saw unit at a second pivot angle that is between a first pivot angle and a third pivot angle. Preferably, the stopper may have an operative position and a non-operative position. In the operative position, the saw unit can pivot from the first pivot angle to the third pivot angle without stopping at the second pivot angle. In the non-operative position, the saw unit can pivot between the first pivot angle and the second pivot angle. A first stopper may be provided to permit the saw to be selectively stopped at a small angle pivot position (e.g. 0°) before a minimum pivot angle (e.g. −5°). A second stopper may be provided to permit the saw to be selectively stopped at a large angle pivot position (e.g.

Abstract: A cutting tool includes a saw blade and a blade case adapted to cover the saw blade. A light may have a light for illuminating a portion of a workpiece that will be cut by the saw blade during a cutting operation. The light may be mounted within the blade case, so that the light is laterally displaced from the saw blade. A mounting device may be utilized to receive the light and the mounting device may be disposed within the blade case.

Abstract: A circular saw having an improved line-of-sight. The circular saw comprises a motor for rotatably driving a saw blade about an axis to cut a workpiece, a bevel angle being defined between the cutting plane of the saw blade and a surface of the workpiece, a housing supporting the motor; a shoe plate supporting the circular saw on the workpiece to be cut, the shoe plate being pivotably connected to the housing to adjust the bevel angle; a main handle supported by the housing; an auxiliary handle supported by the housing; and an indicator for indicating the bevel angle. Preferably, the main handle, the auxiliary handle and the indicator are arranged so that, in the cutting position, the operator can view the saw blade as the saw blade cuts the workpiece and can view the indicator. The operator holds the main handle with one hand and the auxiliary handle with the other hand.

Abstract: A locking assembly for a portable, engine-powered, hand tool, such as a clearing saw. To facilitate removal and installation of a rotatable cutting tool (13), a rotatable shaft (11) driving the cutting tool is locked against rotation by a movable locking pin (17) of magnetic material that is secured in a locking position by a magnet (19) carried by a housing of the tool supporting the rotatable shaft.

Abstract: An engine cutter which is simple in structure and low in manufacturing cost. This engine cutter comprises a disk cutter, an air-cooled internal combustion engine for rotating the disk cutter, a safety cover partially encasing the disk cutter, and a dust-trapping portion which is mounted on the safety cover for trapping and discharging dust to be generated from a cutting work by the disk cutter; and is characterized in that only single fan to be driven by the engine is provided not only for generating an air flow for sucking and discharging the dust that has been trapped in the dust-trapping portion but also for generating a cooling air flow for cooling the internal combustion engine.

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: An arbor for a guided circular saw has three symmetrical lobes. The lobes have end regions with profiles which follow an arc centered on an axis of rotation of the arbor. The lobes have driving regions with profiles which follow the arc of a circle centered in an opposing lobe. A saw for use with the arbor has an eye with a shape which follows the contour of the arbor. The saw is capable of floating axially along the arbor. The saw and arbor can be used to advantage in sawing machines such as edgers. The arbor provides a much larger saw contact area than do prior art arbors. In one embodiment of the invention the saw is mounted between a pair of spaced apart collars on the arbor. The collars guide the saw but are not tightly clamped to the saw.

Abstract: A battery powered circular saw is provided with a novel motor housing and handle assembly having a rearwardly extending primary handle inclined 15° to 40° relative to a rearwardly longitudinally extending tubular housing member. A battery pack is attached to the rear end of the primary handle and is provided with an elongated projection which extends into the elongate tubular housing.

Abstract: A battery powered circular saw is provided with a novel motor housing and handle assembly having a rearwardly extending primary handle inclined 15.degree. to 40.degree. relative to a rearwardly longitudinally extending tubular housing member. A battery pack is attached to the rear end of the primary handle and is provided with an elongated projection which extends into the elongate tubular housing.

Abstract: A handheld machine tool, for example a circular saw, has a disk-shaped tool which is driven in rotation in a housing which holds a drive motor and a tool shaft carrying the tool. The tool can be clamped between a clamping nut, a clamping screw, and two supporting flanges. One supporting flange can be rotated easily relative to the tool shaft without use of auxiliary tools and is supported with an extensive friction at the tool. This supporting flange can be dependably clamped or loosened without tools. The machine tool further has an adjusting device which is coupled with that supporting flange to displace the latter axially toward the tool when that supporting shaft is rotated relative to the tool shaft due to rotational driving. The adjusting device therefore clamps the tool with an increasing force and tries to displace that supporting flange axially away from the tool automatically when the tool is stopped and accordingly reduces the clamping force.

Abstract: A power tool includes a motor having a first shaft, a transmission mechanism operatively connected to the first shaft, a second shaft operatively connected to the transmission mechanism, a housing enclosing the transmission mechanism and adapted to contain a quantity of lubricating grease, and an auger rotatably disposed within the housing on at least one of the first and second shafts for circulating the grease within the housing. A blade may be operatively connected to the second shaft. The transmission mechanism includes a first gear operatively connected to the first shaft, and a second gear operatively connected to the second shaft, where the second gear operatively meshes with the first gear. It may be advantageous to dispose the first and second gears in such a manner so that distance between the blade and the second gear is larger than the distance between the blade and the first gear.

Abstract: A movable handle for a power tool. The power tool comprises a housing, a motor supported by the housing and operable to drive a tool element about an axis, and a handle supported by the housing for rotation relative to the housing about the axis. Preferably, the power tool is a circular saw. The circular saw further comprises a switch assembly supported on the handle for movement with the handle and means for connecting the switch to the motor to accommodate movement of the switch relative to the motor. The switch assembly is electrically connectable to the motor and selectively connects the motor to a power source, and the connecting means includes a wiring arrangement. The circular saw further comprises a locking assembly for locking the handle in a position relative to the housing.

Abstract: A power tool is provided including a motor for operating upon the actuation thereof. An elongated power cord has a first end with a plug mounted thereon for releasably connecting with a power receptacle and a second end coupled to the power tool. At least one outlet is mounted on the power tool and connected to the power cord for supplying power to a plug that is releasably inserted within the outlet.

Abstract: Attachments of the present invention are generally attached to a power drill that has a chuck with an axis of rotation. The attachments include a circular cutting blade attached perpendicularly to a shaft that is removably interconnected with the chuck and a stabilizing handle rotatably attached to and supporting the shaft between the drill chuck and the cutting blade. The stabilizing handle extends substantially transversely to the axis of rotation. The circular cutting blade may be a replaceable cutting blade or it may be integral with the shaft. The extension of the stabilizing handle may include a pivot and the gripping section if the stabilizing handle may include a hand guard. The stabilizing handle may also include a depth gauge mounted perpendicularly to both the shaft and the stabilizing handle. The stabilizing handle may also be two connected handle portions.

Abstract: In a circular saw, a high speed motor has a housing attached to a casing by a mechanical coupling including bolts, circular sleeves, and end washers. A speed reduction gear-box includes first and second gears. The sleeve fits inside a circular channel. When the bolts are tightened, the casing is free to move, to some extent, relative to the housing, so the gear self-align and are much less noisy during use. This structure also enables less precise quality control for the manufacture of the relevant components of the saw.

Abstract: A power tool includes a motor having a first shaft, a transmission mechanism operatively connected to the first shaft, a second shaft operatively connected to the transmission mechanism, a housing enclosing the transmission mechanism and adapted to contain a quantity of lubricating grease, and a grease propeller rotatably disposed within the housing on at least one of the first and second shafts for circulating the grease within the housing. A blade may be operatively connected to the second shaft. The transmission mechanism includes a first gear operatively connected to the first shaft, and a second gear operatively connected to the second shaft, where the second gear operatively meshes with the first gear. It may be advantageous to dispose the first and second gears in such a manner so that distance between the blade and the second gear is larger than the distance between the blade and the first gear.