Abstract: A manual machine tool (10) includes a vacuum device for dust removal (19) situated in its housing (12) and a blow-out connection (20) installed after this. A dust collection box (21), particulaily self-contained, can be attached in detachable fashion to the blow-out connection (20) via its blow-in connection (22). The dust collection box (21) is airtight on all but two sides and has air-exit holes (40) on the top side (36) and a dustproof filter element (48)—especially a fluted filter—on the inside. The dust collection box is particularly secure against the unintentional escape of dust after the dust collection box is detached from the associated manual machine tool because a pair of sealing lips (500) arranged as a separate part is provided inside the blow-in connection (22), which pair of sealing lips (500) is connected as a single part with closing flaps (520, 520) projecting into the interior of the dust collection box (210).

Abstract: A hot tapping tool having a stationary tubular member threadedly engaged to a movable tubular member adapted for rotational and axial movement with respect to the stationary member with said movable tubular member operably connected to a shaft having cutter head and causing said shaft to move axially toward and away from a pipe line to be cut.

Abstract: A nut cutter tool includes a cutter head rotatably driven by a driver. The cutter head may be detachable from the driver for sharpening or replacement of the cutter head. A chip guard may be attached to the tool for catching falling chips and debris. Also a locking mechanism may be provided for releasably locking the tool onto an externally threaded member on which the nut to be cut is threaded to hold the tool in axial alignment with the nut during the nut cutting operation.

Abstract: A drill plate of the present invention includes a concave body and a vacuum manifold. The concave body defines a plurality of drill ports which act as a drill guides to ensure accurate drill hole placement. The concave body collects, and the vacuum manifold removes, debris from the drilling process. Individual magnetic seals cover each of the drill ports to prevent the escape of debris from the concavity. The drill plate further includes a plurality of tooling pins that allow the drill plate to be affixed to the structure being drilled to improve the accuracy of hole placement and for “hands free” operation. The tooling pins allow the drill plate to be used with composite structures that are held together by hard tooling, such as aluminum parts.

Abstract: A facing tool includes a fixture that securely holds a workpiece, and a fixture retainer that secures the fixture and workpiece against axial and radial movement during a facing operation. In one embodiment, the fixture includes a two piece construction that allows a first piece to be swung away from the second piece to accommodate a variety of sizes of workpieces. Provision is also made for a positive load on the cutting tool to reduce or eliminate tool vibration, as well as a chip shield that deflects debris away from the workpiece. A tool spindle is provided that allows for a plurality of cutting tool positions on the spindle to accommodate different workpiece diameters.

Abstract: A machine tool for metal cutting having a collecting system for chips and liquids. Disposed below the work area is a pan having a transverse groove, a chip conveyor disposed in the transverse groove, a spiral-shaped conveyor element, a liquid collector on one side wall of the pan and a chip outlet disposed on the other side wall of the pan on the outlet end of the chip conveyor. To enhance the separation of liquids even when a large amount of chips is produced, an elongated screen element is disposed in the inner cavity of the spiral-shaped conveyor element, the screen element extending over at least part of the length of the conveyor element and terminating at the liquid collector.

Abstract: A screw driving tool including an axially displaceable, drive spindle (5) located in the housing, a bit holder (6) having a shank (7) which releasably connects the bit holder (6) with the drive spindle (5), an axially adjustable depth stop (9) surrounding the bit holder (6) and a portion of the drive spindle (5) and connectable with the tool housing (1), and a sleeve-shaped dust-repelling member (13) arranged between the depth stop (9) and the bit holder (6) and releasably connected with the bit holder (6).

Abstract: Apparatus and method for cutting a low density flexible material and passing through a semi-rigid base material simultaneously by means of a rotary milling cutter and simultaneously applying a compressive force to the flexible material to increase the rigidity of the flexible material while cutting the flexible material, the method includes passing the cutter through a part of the semi-rigid material. The compression force is applied by a partial cylindrical shaped compression head having the rotary milling cutter extending therethrough.

Abstract: A tool for drilling and/or chiseling for use with a hand-held mechanized tool having a suction device (10) including a housing (11) surrounding the tool (1), with the tool (1) including a tubular shaft (2) and a connection member (3) located opposite a front end of the shaft (2) for connecting the shaft (2) with the housing (11) of the suction device (10) and having a diameter larger than a diameter of the shaft (2), and with the connection member (3) being formed of a core (5) surrounding the shaft (2), and an adapter (6) surrounding the connection member core (5) and having a cross-bore (7) opening into the through-channel (8) formed in the shaft (2).

Abstract: A system for making aerated concrete blocks produces such blocks having at least one passageway therein. The system may include a molding station for receiving materials for making aerated concrete and for allowing the materials to rise and stiffen into a body, a dividing station downstream from the molding station for dividing the body into an array of blocks, and a curing station downstream from the dividing station for curing the array of blocks. Moreover, the manufacturing system also preferably includes a drilling station downstream from the curing station to drill the at least one passageway extending through each of the blocks. The passageways provide easier grasping by the mason, reduce the weight without significantly compromising strength, and may be aligned in a wall during construction at a building site to facilitate the placement of vertical reinforcing members in the wall. The drilling station may drill a plurality of spaced apart passageways through each block.

Abstract: A system for boring a workpiece. The system has a spindle assembly for holding and rotating an elongate tool around a first axis to effect boring of a workpiece. The spindle assembly has a spindle that is movable from a retracted position along a first axis to an extended position through an operating range. The spindle assembly further has a guide assembly relative to which the spindle is guidingly rotatable. The system further includes a chip box having a housing defining a collection space and having first and second walls spaced axially relative to the first axis. The guide assembly and chip box are relatively movable along the first axis between first and second different relative positions, with the guide assembly and chip box being closer with respect to each other in the second relative position than in the first relative position. The guide assembly guides rotating movement of the spindle relative to the chip box with the guide assembly and chip box in the second relative position.

Abstract: The invention relates to a tool (1) for machine cutting of workpieces which has a ventilation hood (11) for removing the shavings which arise. The tool is characterized by the fact that the ventilation hood (11) includes a turbine (17).

Abstract: An end effector having a platform and a motor coupled to the platform for driving a drilling member. A motor housing is coupled to the platform and includes a plurality of photogrammetry targets secured thereto. The photogrammetry targets are oriented so as to be readily detectable by a photogrammetry sensor for determining the orientation of the end effector and corresponding drilling member. A pressure foot member and pneumatic cylinders are operably coupled to the platform such that the pneumatic cylinders maintain a constant pressure upon the pressure foot member to provide material clamp up. A depth control device is also provided for accurately controlling the depth of the drilling member and preventing further drilling.

Abstract: A hollow tap having an axially outward extending cutting tooth so that when the cutting tooth is brought into rotational pressure engagement with a resilient tubing the cutting tooth cuts a hole partially through the resilient tubing leaving a coupon hingedly but securely attached to the resilient tubing to maintain the coupon in an out-of-the-way condition within the resilient tubing. Continued rotation of the tap within a saddle brings a sealing surface on the cutting tube into fluid tight seal with the resilient tubing to provide a branch outlet to the resilient tubing though the tap.

Abstract: A boring arrangement is connected to a boring machine equipped with a boring bit for boring a hole in overlapping workpieces. The boring arrangement includes a first sleeve connected to the boring machine, and a second sleeve that is movably connected to the first sleeve so as to allow a relative motion therebetween in a boring feed advance direction. Biasing elements such as springs apply a biasing force between the first and second sleeves so as to exert a pressing force through the second sleeve onto a pressing sleeve connected thereto. The boring bit moves through the interior of the pressing sleeve to bore the required hole in the workpiece. Thereby, the pressing sleeve surrounds the boring site and is seated and pressed against the workpiece with a pressing force that is greater than the boring feed advance force exerted by the boring bit onto the workpiece. A suction arrangement sucks away boring chips and other swarf material arising during the boring process.

Abstract: A table for a drill press that includes a plate for attaching to the column of the drill press, a receptor associated with the plate and providing a well for providing clearance for a sanding cylinder operatively attached to the head of the drill press, a block replaceably disposed at least in the receptor for providing a work surface for resting a workpiece on when the workpiece is being drilled by the drill press or for securing a conventional vise to, and a clamp threadably engaging the cup, and when tightened against the block, maintains the block in the well. The plate has a throughbore that extends centrally therethrough. The receptor is a cup that depends perpendicularly from the throughbore in the plate. The block includes a lower portion that fills the cup, an optional upper portion that rests upon the plate, and an optional throughbore.

Abstract: An apparatus and method are provided for installing a fluid tap onto a pipe or conduit containing pressurized fluid. Debris generated by cutting a coupon from a pressurized fluid conduit is directed though the apparatus and prevented from entering the conduit. The apparatus can be removed from the newly installed air tap and reused. According to the method, pressurized fluid from the pressurized fluid system is used to wash debris generated from the coupon-cutting operation through the apparatus along a flow path that includes a collection chamber and filter. A kit is also provided and includes the apparatus and a variety of interchangeable connectors and cutting tools to allow the apparatus to be quickly configured for a wide variety of tap, valve, and pipe sizes.

Abstract: A table for a drill press that includes a plate for attaching to the column of the drill press, a receptor associated with the plate and providing a well for providing clearance for a sanding cylinder operatively attached to the head of the drill press, a block replaceably disposed at least in the receptor for providing a work surface for resting a workpiece on when the workpiece is being drilled by the drill press or for securing a conventional vise to, and a clamp threadably engaging the cup, and when tightened against the block, maintains the block in the well. The plate has a throughbore that extends centrally therethrough The receptor is a cup that depends perpendicularly from the throughbore in the plate. The block includes a lower portion that fills the cup, an optional upper portion that rests upon the plate, and an optional throughbore.

Abstract: A power drill includes a main body that is divided into a power chamber for mounting a driving motor and a vacuum fan therein and a dust-collecting chamber for mounting a dust-filter therein. A hose is connected to a front inlet of the dust-collecting chamber with a front suction inlet of the hose fixed to a retractable hose holder to closely locate below a bit of the power drill. When the motor is turned on, it drives the bit to drill a hole and the vacuum fan to rotate at the same time to produce a suction force in the dust-collecting chamber, so that any dust produced during the drilling operation is immediately sucked into the dust-collecting chamber via the hose and then trapped in the dust filter that could be removed from the dust-collecting chamber and cleaned for use next time.

Abstract: A dust removal unit (1) includes an adjustable axial depth stop (5) for an at least partially rotatable hand tool device (2) with a radially displaced, rotationally fixed, telescopable, axially limited movable suction tube assembly with a suction tube (4) running parallel to the axis (A) of the tool device (2) and coupled at one end to a suction head (3). The suction tube (4) includes an axially extending pleated bellows (6).

Abstract: A ceiling driller including a dust collector, a seat rod, a drill bit, an adjustment rod, two tool mounting seats, two machining tools, a spring, and a nut. The dust collector is provided with a plurality of dust collecting slots for collecting the machining dust which is forced into the dust collecting slots by the air current brought about by the rotational motion of the seat rod and the machining tools of the ceiling driller.

Abstract: An end effector having a platform and a motor coupled to the platform for driving a drilling member. A motor housing is coupled to the platform and includes a plurality of photogrammetry targets secured thereto. The photogrammetry targets are oriented so as to be readily detectable by a photogrammetry sensor for determining the orientation of the end effector and corresponding drilling member. A pressure foot member and pneumatic cylinders are operably coupled to the platform such that the pneumatic cylinders maintain a constant pressure upon the pressure foot member to provide material clamp up. A depth control device is also provided for accurately controlling the depth of the drilling member and preventing further drilling.

Abstract: An apparatus for securing a first structure to a second structure and performing an operation on the first and second structures. The apparatus includes a frame structure, a plurality of suction cups, a clamp assembly, a conveyance mechanism and a tool. The plurality of suction cups are coupled to the frame structure and are operable in an energized mode for securing the apparatus to the first structure. The clamp assembly is coupled to the frame structure and exerts a clamping force onto the second structure when the suction cups have secured the apparatus to the first structure. The clamping force is of sufficient magnitude to retain the second structure in a predetermined position relative to the first structure. The tool is configured to perform the operation. The conveyance mechanism is coupled to both the frame structure and the tool and enables the tool to be selectively positioned relative to the frame structure. A method for coupling a first structure to a second structure is also provided.

Abstract: A device is capable of collecting dust and drawing dust and is provided with a machine tool mounted thereon and externally connected with an extension tube. The device comprises a fixation seat for mounting the machine tool which has a first opening, and a second opening; a vacuum cleaner mounted in the interior of the fixation seat; a first window disposed slidably at the first opening of the fixation seat; a second window disposed slidably at the second opening of the fixation seat. By controlling the first window to remain open and the second window to remain close, the vacuum cleaner removes the dust produced by the machine tool. On the contrary, by controlling the first window to remain close and the second window to remain open, the second opening removes dust in other areas via the extension tube.

Abstract: A device for holding a nozzle of a hose of a vacuum source to a drill press. The device includes a first portion for attaching to the drill press and a second portion operatively connected to the first portion for holding the nozzle of the hose of the vacuum source in a predetermined orientation to a work piece. The first portion is T-shaped and includes a first tube for attaching to the drill press and a second tube that extends perpendicularly-outwardly from the first tube thereof and which is internally threaded and has a pair of throughslots that extend axially therealong. The second portion is substantially T-shaped and includes a tube for holding the nozzle of the hose of the vacuum source and an appendage that extends perpendicularly-outwardly from the tube thereof.

Abstract: A machine tool for metal cutting having a collecting system for chips and liquids. Disposed below the work area is a pan having a transverse groove, a chip conveyor disposed in the transverse groove, a spiral-shaped conveyor element, a liquid collector on one side wall of the pan and a chip outlet disposed on the other side wall of the pan on the outlet end of the chip conveyor. To enhance the separation of liquids even when a large amount of chips is produced, an elongated screen element is disposed in the inner cavity of the spiral-shaped conveyor element, the screen element extending over at least part of the length of the conveyor element and terminating at the liquid collector.

Abstract: A machining apparatus has a frame, a conveyor on the frame extending in a workpiece travel direction and adapted to support a flat workpiece, a tool mount displaceable on the frame transversely of the direction, a material-removing tool on the mount for machining the workpiece with generation of particles, and a drive roller engageable with an upper surface of the workpiece upstream of the tool for advancing the workpiece in the direction past the tools. A shield is provided above the conveyor extending transverse to the direction upstream of the tools and downstream of the drive roller. At least one actuator serves for pressing the shield against the workpiece between the tools and the drive roller during machining of the workpiece. Nozzles immediately adjacent the shield are connected to a supply of compressed gas for directing a gas current at the workpiece and blowing particles thereon downstream in the direction.

Abstract: A remotely operated drilling tool is configured to produce holes in a core shroud support plate inside of a nuclear reactor vessel. The tool includes a support base that is securely mounted directly above the location where the hole will be formed. In a first operation, a drilling tool is secured to the support base and drills a hole through about 90% of the shroud support plate. The drilling tool includes chip capturing structure to prevent chip created by the machining process from contaminating the water in the reactor vessel. After about 90% of the hole is drilled with the drilling tool, an EDM tool is secured to the support base to machine the remainder of the hole using an EDM process. The EDM tool includes structure for machining the remainder of the hole, removing the slug from the hole, and performing a spotface on the underside of the shroud support plate.

Abstract: Apparatus and method for cutting a low density flexible material and passing through a semi-rigid base material simultaneously by means of a rotary milling cutter and simultaneously applying a compressive force to the flexible material to increase the rigidity of the flexible material while cutting the flexible material, the method includes passing the cutter through a part of the semi-rigid material. The compression force is applied by a partial cylindrical shaped compression head having the rotary milling cutter extending therethrough.

Abstract: The headpiece is equipped with an aspiration system for continuously sucking up and removing shavings that are formed during machining of a flat board. To the headpiece are attached one or more shaft-like elements, which push on the board that is to be drilled via one of their elastically yielding edges, thus leaving exposed and encompassed between them an area of the board where the holes are to be made. A box, which is open toward the area where the holes are to be made and to which the aspiration system is to be fitted, is attached, over its entire length, to at least one of the shaft-like elements.

Abstract: A horizontal cutting type-tapping machine has a vertically extending drive shaft and a pair of detachably engaged surface gears. The surface gears have a curved upper surface gear, fixedly connected to the drive shaft, and a lower surface gear. A gearbox is connected to the lower surface gear and converts a horizontal rotating force of the drive shaft to a vertical rotating force. An externally threaded shaft is horizontally mounted to a vertically rotating gear of the gearbox. An internally threaded sleeve is disposed in the gear housing of the gear box and engages the externally threaded shaft so as to be horizontally moved by rotation. A saw part is fixed to a front end of the internally threaded sleeve. An internal tube, mounted around the drive shaft, has a thread at its upper portion and a lower portion with a diameter smaller than that of the upper portion. A vertically moving sleeve is slidably mounted around the lower portion of the drive shaft.

Abstract: The present invention relates to a capture and containment canister which reduces the risk of radiation and other biohazard exposure to workers, the need for a costly containment hut and the need for the extra manpower associated with the hut. The present invention includes the design of a canister having a specially designed magnetic ring that attracts and holds the top of the canister in place during modifications to gloveboxes and other types of radiological and biochemical hoods. The present invention also provides an improved hole saw that eliminates the need for a pilot bit.

Abstract: A tool for effecting drilling and/or chiseling and including a tubular shaft (2, 22) having an axially extending through-channel (8, 28) and provided, at one of its axial ends, with a drilling or chiseling head (5), and a connection member (3, 23) connected with another of axial ends of the shaft and provided at its end remote from the shaft (2, 22) with a shank (4, 24), the through-channel (8, 28) being connected with the tool circumference by a cross-bore (7, 27), and the largest cross-sectional surface (A1, A4) of the connection member (3, 23) corresponding at least to 2.5 times of the largest cross-sectional surface of the shank (4, 24).

Abstract: A tool for effecting drilling and/or chiseling and including a tubular shaft (2) provided, at its one axial end, with a cutting head (5), and a connection member (3) provided at another axial end of the shaft (2) and equipped with a shank (4), with the connection member (3) having a cross-bore (7) opening into the through-channel (8) formed in the shaft (2) and, with the connection member having, along a substantial portion of its axial extent, a diameter (d1) that at most corresponds to 1.6 of a diameter (d2) of the shank (4).

Abstract: A tool for drilling and/or chiseling for use with a hand-held mechanized tool having a suction device (10) including a housing (11) surrounding the tool (1), with the tool (1) including a tubular shaft (2) and a connection member (3) located opposite a front end of the shaft (2) for connecting the shaft (2) with the housing (11) of the suction device (10) and having a diameter larger than a diameter of the shaft (2), and with the connection member (3) being formed of a core (5) surrounding the shaft (2), and an adapter (6) surrounding the connection member core (5) and having a cross-bore (7) opening into the through-channel (8) formed in the shaft (2).

Abstract: A rotary cutting tool is disclosed having an evacuation bore in a shank and generally radially extending passages opening to the bore to conduct away material being removed by cutters. Intersecting cutters are disposed at the intersections of right and left-hand flutes in the tool shank. The right-hand flutes extend along the entire length of the tool shank. The left-hand flutes extend from one end of the shank to an opposite end spaced from the lead end of the shank to leave only the end portion of the right-hand flutes extending to a lead end of the tool shank.

Abstract: A compact autofeed drill is provided and generally comprises an elongate housing having opposed ends, a motor disposed within the housing, an elongate drill bit, a drill bushing, an actuation device, and a resilient member. The motor is disposed within the housing intermediate the opposed ends. The drill bit is operably connected to the motor and is capable of extending from the housing through one end thereof. The drill bushing is operably connected to the housing and defines a bore, where the drill bushing at least partially surrounds the drill bit as the drill bit extends from the housing through the bore. The actuation device is remotely disposed with respect to the housing and is operably connected thereto, wherein the actuation device is capable of causing the motor to rotate the drill bit and is also capable of causing the drill bit to extend from the housing.

Abstract: A device for removing chips produced by a machining head. A pressurized liquid supply pipe is connected to a dispenser for spraying the machine tool so that the liquid carries the chips into a discharge area. The dispenser consists of at least one multidirectional nozzle for spraying liquid throughout the space including the main places where the chips fall.

Abstract: A machine tool has a machine part (25) which undergoes temperature-dependent changes in length, and is equipped, where it comes into contact with coolant (23), with a thermal insulation layer (28).

Abstract: A tool and method for cutting a circular opening and retaining the cut portion. The tool comprises a shaft having at least one cutting thread and at least one tapping thread, or at least one cutting thread and at least one male screw thread, or only at least one tapping thread, or only at least one male screw thread, or a cutting tip and at least one tapping thread, or a cutting tip and at least one male screw thread, and a cutting member having at least one cutting bit radially displaced from the shaft. The shaft and the cutting member have a mutual rotational axis. An alternative tool has a spaced distance on the shaft between the cutting member and the at least one cutting thread and at least one tapping thread, or the at least one cutting thread and at least one male screw thread, or the at least one tapping thread, or the at least one male screw thread, or the cutting tip and at least one tapping thread, or the cutting tip and at least one male screw thread.

Abstract: Apparatus for removing chips from the machining chamber of a machine tool comprising primary and secondary chip removal ports with the primary chip port being positioned in the stream of chips emanating from the workpiece being cut and the secondary chip port being located in a trough at or near the bottom of the machining chamber for collecting chips not entering the primary chip port. A source of vacuum is applied to both ports either simultaneously or, preferably, in an alternating manner and chips are conveyed through respective conduits to a chip collection container.

Abstract: A fluid container draining device (10) for use in draining a fluid container, such as an oil filter (12) in a controlled manner. It has a drill bit (14) with a sharpened tip (16) and exterior channels (20) on its shaft (18) extending from its tip (16) to a rear region (22). The drill bit (14) is immobilized in an axial bore (3) of a drill bit holder (24) which has a threaded front region (26) which is preferably frustum-shaped. Located rearwardly of the drill bit holder (24) is a valve (42) which when opened up permits fluid to be drained from the fluid container (12) through the channels (20) on the drill bit's shank (18), through the axial bore (30) in the drill bit holder (24), and out through the valve (42).

Abstract: A vacuum attachment device for a nutplate drill motor having a footpiece and at least one cutting tool. The vacuum attachment device comprises a body portion and a nozzle portion. The body portion has a central aperture which engages the footpiece and an air chamber which extends through the body portion and intersects the central aperture to form a vacuum path. The nozzle portion is coupled to the body portion and is in fluid connection with the air chamber. The nozzle portion is coupled to a source of vacuum pressure. During the operation of the nutplate drill motor, dust and chips that are generated by the cutting tool are drawn by the source of vacuum pressure into the air chamber and through the nozzle portion.

Abstract: A debris capturing device for a power drill. The device includes a drill engaging-collar and a debris capturing-cup. The debris capturing-cup detachably extends axially from the drill engaging-collar and encircles the chuck of the power drill and contacts the workpiece so as to allow debris created from the power drill drilling into the workpiece to be captured therein. In one embodiment, the drill engaging-collar detachably engages around the housing of the power drill, just behind the chuck of the power drill. In another embodiment, the drill engaging-collar is integrally formed with and around the housing of the power drill, just behind the chuck of the power drill.

Abstract: A cutting tool [10] for use in forming circular and non-circular holes in a workpiece [16] includes a boring shaft [12] that is rotatable about an axis [15] and a boring head [14] that is secured to the boring shaft [12]. A cutting blade [46] extends beneath the bottom surface of the boring head [14] and is spaced apart from the axis [15]. A slug pin [58] extends from the bottom surface of the boring body to pierce and retain the slug after it has been cut to prevent it from falling into the workpiece [16].

Abstract: In order to process a solid processed object with a simple construction, and to process a solid and flat work while effectively collecting particulate scraps, in a machine tool for processing work in which a working table on which the work is mounted and a spindle in which a cutter is installed move relatively to each other, a bellow which telescopes freely is provided, one open end of which connects to the spindle head so as to surround the spindle, and the other open end of which connects to a working table in such a manner as to surround the work.

Abstract: A device for use with a press of the type which includes a vertical ram for exerting a force on a first part to press the first part through a second part where the first part falls free when pressed through and separated from the second part comprising, a vertically extending shaft, an arm mounted to the shaft for generally horizontal rotational movement on the arm, a catch receptacle for a first part which is pressed free of a second part, means are provided for mounting the catch receptacle on the arm at varying distances from where the arm is mounted to the shaft whereby the catch receptacle may be positioned under the vertical ram of the press and catch a first part as it is pressed free of the second part.

Abstract: A dust collecting router for collecting dust and debris while using a router. The dust collecting router includes a housing with a passage therethrough with a pair of ends each having an opening into the passage. A motor is mounted in the housing and has a rotating shaft outwardly extending therefrom towards a first end of the housing. A cutting bit is coupled to a free end of the rotating shaft and outwardly extending through the opening of the first end of the housing. An impeller comprising a plurality of fan blades outwardly radiating from the rotating shaft of the motor. A collecting container is in communication with the opening of the second end of the housing.

Abstract: An underwater machining apparatus that is capable of drilling completely through a surface and collecting all machining debris is described. The underwater machining apparatus, in one embodiment, includes a drill body, a drill motor coupled to the drill body, a drill bit coupled to the drill motor, and a drill bit sleeve positioned coaxially around the drill bit. The underwater machining apparatus also includes a vacuum assembly coupled to and in fluid communication to the drill bit sleeve. The drill bit sleeve is configured so as to permit water to be drawn through the sleeve by the vacuum assembly, thereby removing the machining debris. The vacuum assembly includes a collection container configured to collect solid particles of machining debris while permitting water to flow through the container.

Abstract: A cutting tool assembly which is adapted for use in combination with a drill for cutting a hole in a work piece. The assembly includes a u-shaped blade and a mandrel assembly for fixing the blade to the drill, a dust shield which surrounds the blade and a stabilizer which can be fixed adjacent the blade. In one construction, the blade includes tips which are removably connectable to a wing portion. Also, a coating of wear-resistant material may be applied to the tips so that the blade is self-sharpening during cutting operations.