Abstract: A powered garden tool is provided comprising a handle member having a power unit disposed therein and a digging attachment having a first end rotatably and detachably securable to the handle member and a second end having at least two cutting blade members secured thereto. In an alternative embodiment, the powered garden tool is in the form of a digging attachment which can be rotatably and detachably securable to a hand-held power tool, such as a power drill or cordless screwdriver.

Abstract: A multi-purpose weeder attachable to a hand-held rotary power implement is designed to weed, aerate and till soil. A vertical shaft is removably attached to the implement to permit erect operation of the weeder. A pair of substantially spiral-shaped blades are rigidly connected at an acute angle with the lower end of shaft to cause discharge of weeds upwardly and outwardly from soil when the shaft is rotated. The blades are equally spaced from the shaft as they diverge upwardly. A top end of an auger is connected to the lower end of the shaft to penetrate weed and soil at its free end. An annular member with a cross horizontal element connects the upper ends of the blades to the shaft.

Abstract: The key to this invention of a rotary hand-held tilling and weed removing device is simplicity. The three part design consisting of a 36″ shaft; a “T” shaped handle and two lock collars and only weighing 1.5 pounds makes it a multi purpose garden tool for use with any ⅜ household drill. Easlily attached to the drill chuck, the 2 inch wide rotary arms allow tilling and weed removal in very confined areas and precision control from the shaft handle adds to the ease of use. This simple design does not require blade or tiller bar replacement making it very cost effective. A low carbon, one piece, steel shaft requires no maintenance.

Abstract: An electrical hand tool is proposed, whose handle, with is rotatably maintained on the motor housing, and has a maintenance opening. By means of this, the structural length of the hand tool is reduced, servicing is simplified and the production costs are lowered.

Abstract: There is provided herein a power drive adapter for a pencil sharpener or other manually rotatable tool which affixes a shank to the tool. In one embodiment this affixation includes a peripheral edge positioned on the tool and a shank attached to that edge. In another embodiment a holder member having a yolk of dual prongs is fitted with a power drive compatible shank. The inner surface of the prongs has grooves for engaging protruding edges positioned on the tool. As a result, the holder member securely grasps the manually rotatable tool (pencil sharpener) at one extremity and presents at its other extremity a shank for insertion into the chuck of the chosen electric drive.

Abstract: A rotary tool powered pencil sharpener. The sharpener includes a housing, a shaft, and sharpening apparatus. The shaft extends into the housing and is rotated by the rotary tool. In a first embodiment, the sharpening apparatus includes a bracket disposed in the housing and rotating with the shaft, a support extending in the bracket, and a blade extending along the support. In a second embodiment, the sharpening apparatus includes a ring gear attached in, and to, the housing, a tube disposed in the hauling, extending from the shaft, and receiving the pencil, a cutter rotating relative to the tube, and a planet gear attached to the cutter and engaging the ring gear. The cutter has blades extending spirally therealong and rotates as the planet gear rotates around the ring gear when the tube, via the shaft, is rotated by the rotary tool, and as a result thereof, sharpens the pencil.

Abstract: An edging and trimming apparatus for a lawn sprinkler head includes an elongate rotary shaft carrying an annular rotary blade at a lower end thereof. The opposite upper end of the shaft is releasably interconnected to a rotary auger motor. The motor drives the shaft axially and rotates the blade to perform edging and trimming of the grass surrounding a standard sprinkler head.

Abstract: A power tool includes a motor (20) mounted within a body (14) of the tool. The tool (14) is able to accept any one of a plurality of attachment members (54) so as to form a tool dedicated for a particular job. Each one of the attachment members (54) of the plurality has a pre-determined output speed and one of a rotary and non-rotary output. By the ability to interchange the attachment members of the plurality therefore a total power tool is provided having the above features.

Abstract: A universal, quick connect, reciprocating saw attachment for electric drills is disclosed, designed as an adapter that converts a power rotary drill into a reciprocating saw. The present invention converts the rotary action of a drill into the necessary reciprocating action to power a saw blade. The present invention adapts to the housing of various cordless drills and provides for a connection of a steel shank to the drill chuck. A gear box with a reciprocating mechanism inside the housing then provides a coupling to a saw blade to provided the necessary cutting action of a conventional reciprocating saw. Additionally, there are buttons that are designed to expand in and out to tighten the chuck which holds the adapter. The housing is made of a heavy duty impact resistant plastic with the associated gears and reciprocating mechanism made from hardened steel.

Abstract: A pair of grass shears includes a base blade having a handle secured to one end, and a movable blade rotatably secured to the base blade. A follower is rotatably received in the handle and has an eccentric shaft slidably engaged in a slot of the movable blade. The movable blade may be rotated relative to the base blade when the follower is rotated to move the eccentric shaft along the slot of the movable blade. Two gears are rotatably received in the handle and engaged with each other. One of the gears is secured to the follower. The other gear may be coupled to and driven by the power tool.

Abstract: A device for digging holes for setting out bedding plants, including a rotary tool for digging a hole, the tool having a shank adapted to be chucked to a power drill and passing through an inverted bowl shaped transparent plastic cover to contain excavated soil and dispose the same in an annular mound, for ready repacking of the soil around the plant roots. A limit stop arrangement limits the extent of advance through the cover which rests on the ground during the use of the device, so as to set the hole depth. The tool has a flat bladed digging portion forming a flat bottomed hole.

Abstract: A miniature tenon cutter having an aluminum body and a flat cutter blade positioned adjacent to a throat having a funnel mouth utilizing a gauge to assist in establishing cutter blade position. The tenon cutter is used with an electric drill motor, and it forms a cylindrical tenon with a sloping shoulder.

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: A rotating tenon cutter having a wooden or aluminum body and a curved cutter blade positioned adjacent to a throat having a bell mouth with a matching curve. A cylindrical tenon is formed with an attractive shoulder that curves from the tenon to the largest cross-sectional dimension of the work piece on the same radius as the cutter blade. A bubble level vial in the body indicates when the axis of rotation (and axis of the tenon to be formed) is horizontal. The cutter blade is repositionable on the body so that the bevel is appropriately presented for sharpening using a drum sander while the face or a flat side of the tenon cutter body rests on a drill press table.

Abstract: An automatic adjusting pipe cutting apparatus includes a housing having a first compartment defining a first cavity and a first axis of rotation extending in orthogonal relationship thereto and a second compartment defining a second cavity and a second axis of rotation extending in orthogonal relationship thereto, a cutting mechanism for cutting a pipe disposed in the first cavity, and a driving mechanism for driving the cutting mechanism disposed in the second cavity. The housing has a hinge disposed between and connecting the first and second compartments which allows them to pivot in relation to one another. The housing also has rollers circumferentially spaced apart from one another and rotatably mounted to the first compartment about the first cavity. The cutting mechanism has a cylindrical frame supported within the first cavity by the rollers and thereby is rotatable about the first axis of rotation.

Abstract: A shearing device for cutting boards of particulate material, or similar, having a body adapted for fastening to a drill, and first and second cutting blades fixed to the body, each cutting blade having a curved cutting edge extending to a forward tip of its respective cutting blade. A third cutting blade is pivotably mounted to reciprocate in a plane between the first and second cutting blades the third cutting blade having curved cutting edges extending to a forward tip of the third cutting blade so as to cooperate with the first and second cutting blades to perform the cutting operation. The third cutting blade is spaced from the first and second blades by spaces to provide a clearance of 1 to 3 mm.

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 sawblade 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 sawblade. The stabilizing handle extends substantially transversely to the axis of rotation. The circular sawblade may be a replaceable sawblade 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.

Abstract: My interest was aroused by the lack of any power tool to help the electrical contractor cutting rectangular holes through walls for his wall boxes for switches and receptacles. I started making a model in 1992 only to find out there was no parameters to follow for the specifications the thrust needed. To push four saw blades were one problem to solve. The fact that the unit would require a rigid attachment to the wall was another problem to solve. The small rectangular hole gave little room to work. The last problem to solve was about 12 inches of simultaneously sawing. By Thanksgiving time of 1996 my fourth model was finished. I had the surprise to discover that I was able to saw a rectangular hole of two inches by four inches in 1/2 inch plasterboard in about ten seconds and in plywood, less than one minute|This could be an excellent item for the mobile home builder to cut the holes in the walls. He would welcome this saw.

Abstract: This is a grass remover to remove grass from the surface of an area in a circular path about the top of a guide hole in which a termite bait station may be inserted. This includes a circular skirt with a hub in the middle and a plurality of cutting blades sharpened at the lower end and carried between the hub and the skirt. A guide cylinder is fixed to the hub and extends downwardly into the guide hole. A stem extends upwardly from the hub and is of a character to fit into the chuck of a hand drill. Operation of the hand drill when the guide cylinder is in the guide hole causes the grass to be removed from the circular area about the top of the guide hole.

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 window scraper has a drum that mounts four blades on its periphery, the blades extending generally tangentially so the sharp edges project beyond the drum. A shroud covers the drum and blades, and the shroud defines an opening where the blades project through the opening to engage a glass pane to be scraped. Switch actuators are placed beside the opening so the opening must be urged against a surface before the drum can be rotated. The motor and battery may be placed within the handle of the scraper. A safety shield is pivoted to the shroud, and can be used to cover the opening in the shroud when the scraper is not is use.

Abstract: A cutting tool and associated positioning templates locate and cut rectangular junction box holes in dry wall or similar sheet material forming structural surfaces. Templates defining a medial positioning slot and providing a spaced pair of positioning pins are carried by pre-established junction boxes and surface sheeting material is established thereover with the positioning pins projecting through the sheet material to indicate positioning slot location. The tool provides a body articulately carrying two perpendicular pairs of spaced parallel saw blades that are moved reciprocably by spring biased driving linkage to cut rectilinear holes in the sheet material over the junction boxes. The saw blades have arcuate edges defining cutting teeth of opposite pitch on each side of the arcuate edge of the tool to aid positional maintenance and prevent chatter during cutting.

Abstract: A compact drill attachment or device for converting rotary drill motion to reciprocating saw action and adapted to be used in conjunction with cordless, electric and pneumatic hand held drills. A practical and extremely versatile tool to accomplish sawing results that were before inconceivable. Featuring a plurality of different reciprocal flush cut options, a plurality of entries from a power source to accomplish close quarter sawing, a blade stroke distance which exceeds the competition, a cutting stroke which is faster than the cleaning stroke, a plurality of shoe or fence settings, and which accepts major brands of reciprocal saw or jigsaw blades.

Abstract: A high-speed carbide rotary cutting tool designed for use in the carving, cutting and shaping of most materials including, but not limited to, wood, ferrous and non-ferrous metals, bone, stone, plastics and composites. It is designed for use in high-speed, hand-held rotary grinders, such as flex shaft hand pieces, die grinders, and other high-speed stationary grinding tools, primarily using 1/4 inch and 1/8 inch shaft sizes. The tool includes a triangular solid carbide cutting head shaped for cutting different profiles. The cutting head is brazed to a mandrel in such a manner as to render the tool one piece.

Abstract: A battery retention latch (350) comprises a retaining member (354), a release button (356) and a cam element (362). A biasing member 358 maintains the retention catch in a normally engaged position. The cam element (362) retains a battery pack (26) in a cordless device (352) regardless of the annular orientation of the battery pack (26) about a casing axis. A holding device (382, 394) maintains the battery (26) in the cavity (34) against a spring ejecting force such that the battery (26) partially extends from the device (352) enabling the battery (26) to be removed from the device (352).

Abstract: The drill attachment is a cordless, electric or pneumatic drill device having three (3) flush cut features which enables user to saw in a reciprocating action. A compact metal enclosure has steel bevel gears together to generate perpetual motion onto an eccentric peg to drive arm to blade. The rotation of the drill enters the tool by the removable hexagonal shaft which can be inserted into the tool at three (3) different angles depending on the task. The small bevel gear meshes with a larger bevel hub gear having an eccentric peg that is inside an elongated slot of the blade drive armature. As the small bevel gear rotates, its speed is increased by ratios in the larger bevel hub gear; the rotation of the larger bevel hub gear is converted to a linear reciprocating motion which drives the blade.

Abstract: A battery pack release arrangement for a cordless power tool includes a manually operable actuation member which is movable between a latching position and a release position. In the latching position, a pair of battery packs of the cordless power tool are releasably retained within the tool housing. When the actuation member is moved to the release position, the battery packs are permitted to be quickly and easily removed for recharging. Preferrably, the manually operable actuation member is unitarily constructed to include a manual contact push button portion and a latching portion including a pair of latching legs for engaging the battery packs. The latching legs are resiliently deflectable. The battery pack release arrangement of the present invention further includes a guiding member, or camming member, which functions to direct the latching legs of the actuation member out of an normally interfering relation with the battery packs as the actuation member is moved to the release position.

Abstract: A cordless, electric or pneumatic drill device which enables user to saw in a reciprocating action. A compact metal enclosure having steel helical and worm gears together with eccentric peg to drive arm to blade, the rotation of the drill enters the tool by the removable hexagonal shaft which can be inserted into the tool at three (3) different angles depending on the task. The worm gear meshes with a helical gear having an eccentric peg that is inside an elongated slot of the blade drive armature. As the worm gear rotates its speed is exchanged for torque in the helical gear the rotation of the helical gear is converted to a linear reciprocating motion which drives the blade.

Abstract: In a machine for dispensing stackable roofing washers individually and for driving fasteners through such washers, a shuttle is actuatable to displace a lowermost washer of one from a stack, either a small, circular or large, square washer. A gate is biased toward a lowermost position wherein it provides sufficient clearance for the lowermost washer but not any overlying washer to pass beneath it. A pawl mounted pivotally to the gate is biased to a lowermost position wherein the pawl engages a small washer displaced by the shuttle so as to restrain it against backward movement. A stop is adjustable so as to limit movement of a washer of whichever size is being displaced. A measuring bar is mounted via the stop. A screw gun, which provides a primary handle, and a secondary handle are mounted to an upright element so as to be independently adjustable.

Abstract: An attachment for a hand tool for converting rotary motion to reciprocating motion to an air bathed tool holding chuck.

Abstract: A reciprocating cutting tool includes a shank for mounting in a pneumatic hammer, a blade holder assembly connected to the shank and a blade clamped in the blade holder assembly. The blade holder assembly includes a base member and a retainer member which are clamped together. A blade receiver is formed between the base and retainer members. The base member includes a recess and the retainer member includes a shoulder which is received in the base member recess for abutment by a fixed end of the blade.

Abstract: A removable mounting bracket with an extended sanding foot for attachment to a vibrating or orbital sander which mounts against the platen of a sander to allow for sanding of inside corners and edges.

Abstract: An elongate pair of spaced support flanges is arranged in a parallel coextensive relationship pivotally mounting an elongate housing at a first end of the flanges, with the second end of the flanges having a support yoke oriented at an acute angle relative to the support flanges, such that a drill member mounted onto the yoke between the support flanges is in operative communication with the elongate housing, with the elongate housing mounting a circular saw at an obtuse angular orientation relative to the drill to provide for angled cutting and clearance during an angle cut.

Abstract: A power transmission device for connecting a rotation shaft with a mechanism for converting rotational movement into reciprocal movement. The rotation shaft is concentrically accommodated in a rotation shaft sleeve having an outer wall with a circumferential groove. A connecting sleeve, with a plurality of circumferentially arranged through-holes with a ball mounted in each through-hole, slidably receives the rotation shaft sleeve. A sliding sleeve having a circularly formed internal recess is mounted over the connecting sleeve and is slidable to position the balls in the through-holes such as to either connect or disconnect the connecting sleeve from the rotation shaft sleeve.

Abstract: Disclosed is a hand held, cordless electric, coping saw, which has a "U"-frame with a handle at one end of the "U". A battery and motor power the saw. The blade of the saw is endless and is round cylinder-type flexible blade trained in a generally rectangular loop about four wheels, one mounted in each corner of the "U", three of them idle wheels and one of them functioning as the drive wheel. The drive wheel is located at the handle end corner of the "U". At the other end of the "U", the frame has a "floating" corner piece housing one of the idler wheels and being spring biased away from the main part of the frame to provide saw blade tensioning.

Abstract: A hack saw attachment for converting a power driven saber saw or other reciprocable tool to a power driven hack saw includes a plate having a hack saw frame fixed perpendicular thereto. The sole plate of a saber saw is provided with openings for releasable connectors whereby the plate of the attachment is easily connected to the saber saw sole plate. The hack saw frame carries guides at its inner and outer ends, the inner end of the blade passes through the inner guide for attachment to the saber saw arbor. The outer guide carries a second arbor for the outer end of the blade and a spring acts on the outer arbor to ensure proper tension of the hack saw blade during cutting. The hack saw frame carries a handle to facilitate manual reciprocation of the hack saw as it is also reciprocated by the saber saw drive to ensure even wear of the hack saw teeth along the length of the blade.

Abstract: A sawing device is attachable to an electric hand drill. The hand drill can be operated by either alternating current or direct current, using a battery. The battery operated drill eliminates the need for electrical cords, so it can be used anywhere. The saw bar may be made of material such as plastic that requires no lubricating oil, is lighter and less abrasive than conventional metal saw bars. There is also a non-metallic insert that will attach to a metal saw bar. This insert may go into the conventional metal saw bars with the same advantages as above. The hand drill rotation is transferred through a connecting shaft to the sprocket that drives the cutting chain, which travels on a chain bar with a single sprocket.

Abstract: A router attachment for adapting a conventional screw gun for cutting sheets of drywall material includes a housing that is removably securable to the housing of the screw gun, an input shaft rotatably mounted in the housing for coupling with the screwdriver shaft of the screw gun, an output shaft rotatably mounted in the housing for coupling with a router bit and a step-up gear assembly for associating the input and output shafts so that rotation of the input shaft at a first rate of rotation drives rotation of the output shaft at a second, higher rate of rotation.

Abstract: A cordless electric device has a main body portion extending along an axis and a handle portion extending at an obtuse angle with respect to the axis, the handle portion receiving therein along a second axis a battery pack. The device has a two-part housing, with the parts respectively defining the front and rear of the body and handle portions.

Abstract: An adapter for quickly and easily converting a portable, 71/4 inch wormdrive circular saw into a beam cutting chain saw, whereby to increase the cutting capacity of the saw from about 21/4 inches to about 12 inches. the adapter carries a standard cutting chain and includes a hinged attached assembly to be removably connected to the existing slide bars of the saw. The attachment assembly comprises a pivotal hinge and a hinge attachment plate. The hinge and/or the adjustment plate may be pivoted relative to one another to vary the effective length of the hinged attachment assembly and thereby facilitate the connection of the adapter to the slide bars of the saw. By adjusting the length of the hinged attachment assembly, the adapter can be selectively sized for use with virtually all commercially available power saws, regardless of the radial distance between the existing motor shaft and the slide bars of the saw.

Abstract: A metal forming tool attachment includes a body assembly having a front part and a rear part. A rotary forming element journalled on the rear part is driven by an input shaft which projects from the rear part for coupling engagement with the output shaft of an associated power tool. Another rotary forming element journalled for free rotation on the front part cooperates with the driven rotary forming element to form a nip region therebetween. An adjustment lever mounted on the rear part cooperates with a threaded member mounted in fixed position on the front part to move the front part generally toward and away from the rear part whereby the nip region between the forming rolls may be adjusted. A pair of spaced apart rotary forming elements carried by a mounting plate pivotally supported on the front part may be substituted for the single rotary forming element carried by the front part to adapt the tool attachment to perform a radial bending operating.

Abstract: A interior pipe cutter with depth of cutting guide and safety extension is described for cutting pipe from the inside out, while preventing the cutting blade from extending too far outside the pipe workpiece, so that it does not jump outside the pipe or do unwanted, potentially hazardous, cutting in the area outside the pipe. The cutter has a disk blade with a proximal and a distal face, the disk blade integrally formed with saw teeth extending radially outward from the disk circumference. The blade is integrally formed with a concentric dimple of diameter less than that of the disk blade, which functions as a depth of cutting guide. An elongated longitudinal shank extends axially through the center of the disk blade forming a distal shank segment and a proximal shank segment.

Abstract: A plastic closet flange reboring tool having an elongated arbor, a cutting member and two exchangeable non-circular guide members. The arbor having a first end structured of a D-shaped threaded extension, and a second end structured for releasable connection to a rotatable tool chuck. The cutting member is generally concavo-convex in structure with the guide member being generally rectangular and flat with rounded terminal ends. Both the cutting member and guide member have central D-shaped apertures sized for receiving the D-shaped threaded extension of the arbor. Both the cutting member and guide member are releasably adjustably retained on the D-shaped threaded extension of the arbor with threaded nuts.

Abstract: A self-centering plastic pipe router tool is described for routing of a sawed-off end of pipe from the interior surface of a salvageable pipe. The router tool is a disk with an axial shank on one side of the disk. A pair of cutting flanges extend radially outwardly and upwardly in the direction of the axial shank from the disk perimeter to form first and second cutting edges. A concentric cylindrical skirt extends downwardly from the disk for axial centering of the router tool within the waste pipe ID. The first cutting edges are sized for routing of the waste pipe and the second cutting edges are sized to plane and re-finish the interior surface of the salvageable pipe for re-use.

Abstract: Attachments for a power source such as a rotary drill. Such attachments can be fixedly secured to the power source. Turning power on to the source drives a shaft which drives a gear mechanism which drives a utility woodworking head such as a circular saw or power sander. The power source may be turned on indirectly by a false trigger mechanism slidably attached to a housing so enclosing the drive shaft and assisting to support the apparatus.

Abstract: A sawing device attachable to regular electric drill, having a main body with a revolving shaft set thereinside to protrude therebeyond to drive an inner spiral gear set to rotate so as to further let an eccentric strut on a longitudinal gear push and pull a front link rod to make reciprocating motion to further carry the front prolonged saw blade to saw; said main body comprising a drill sleeve for fixation with regular electric drill tool to let the revolving shaft be fixedly connected with the revolving body of an electric drill so as to make use of the revolving power of the said electric drill to drive the sawing device to saw.

Abstract: There is disclosed a power-driven chain saw converted from a stripped-down power-driven circular power hand saw which has a unitary housing adapted to be mounted on the power unit of the stripped-down power-driven hand saw. The housing is offset axially to provide a relatively wide area on one side having a window therein through which sawdust is deflected. Support-bar mount is an integral part of the housing as are a sawdust deflector, an oil reservoir, and a support-bar mounting boss. A sprocket is splined to a hub from which it is easily removable and which, in turn, is splined to the drive shaft with a more firm splining. A cover is provided for the housing which closely conforms to the chain and has an axially disposed dent or impression therein to accommodate the hub of the sprocket.

Abstract: The present invention relates to an adaptor for converting a rotary power tool with a driving bit to a rotary cutter. The adaptor is particularly useful for making a conventional rotary screw gun into a gypsum wall board cutter. On one end of the adaptor is a rotary cutting bit, while a flexible open-ended bulb is fitted on the other end of the adaptor to receive the front end of the screw gun from which the screw driving bit extends. Between the bulb and the rotary cutting bit is a casing for housing a power transmission mechanism which transfers torque from the screw driving bit to the rotary cutting bit. The power transmission mechanism includes a plurality of rotatable gears and shafts to enable the cutting bit to turn at a speed preferably six times greater than that of the screw driving bit of the screw gun. The adaptor is operatively engaged with and disengaged from the screw gun without clamping or unclamping the adaptor to the screw gun.

Abstract: A portable self-contained gas operated hand saw is provided having a housing with a carburetor an engine therein, a handle having a trigger coupled to the carburetor mounted at one end of the housing and a saw blade mounted at the other end of the housing. The saw blade housing has a worm gear driven rotatable shaft to which a saw blade may be keyed for rotation. The worm gear is driven by a centrifugal clutch driven by the engine. Fans are provided for rotation with the clutch and saw blade for cooling the saw in addition to the normal cooling of the engine. Anti-vibration means are provided to isolate the handle and trigger from the engine. The engine is suspended from a rubber mount allowing it to vibrate freely, thereby isolating vibration from the saw blade housing, saw plate, and handle and trigger.

Abstract: A latching arrangement of latching a battery pack in an electric device. e.g. an electric drill or a battery charger, has at least one shoulder on an outside surface of the battery pack casing. A displaceable limb, preferably a limb of a U-shaped spring is resiliently biased against the casing. A manually actuatable latch release member is movably mounted in the electric device and movable between a latching position and a release position. This limb normally blocks the shoulder in the latching position to latch the battery pack in the electric device. The release member displaces the limb away from the casing and clear of the shoulder in the release position to unlatch the battery pack and allow withdrawal thereof from the electric device. Preferably the release member comprises a yoke straddling the battery pack. Advantageously the shoulder may be steeply inclined to cause the battery pack to be urged tightly into the electric device.