Abstract: A first and a second object are joined with the aid of a joining element including at least in the region of its distal and proximal ends a thermoplastic material. Two blind holes facing each other are provided in the two objects and the joining element is positioned in the blind holes such that its distal and proximal ends are in contact with the bottom faces of the blind holes and such that there is a gap between the two objects. This assembly is then positioned between a support and a sonotrode. The sonotrode and the support are forced towards each other, while the sonotrode is vibrated, thereby liquefying at least part of the material having thermoplastic properties, there, where the joining element ends are pressed against the bottom faces of the holes and allowing the liquefied material to infiltrate into pores.

Abstract: The present disclosure concerns embodiments of a badge or insert for a golf club head that can eliminate undesired gaps between the insert and the peripheral sidewall of the cavity that receives the insert. In one embodiment, a golf club head comprises a main body comprising a cavity, which defines a central surface and an inner peripheral surface at least partially surrounding the central surface. An insert comprises a central portion and a deflectable portion coupled to and extending along a peripheral edge section of the central portion. The deflectable portion has a shape corresponding to and contacting a corresponding section of the inner peripheral surface of the cavity. The deflectable portion forms a press-fit engagement with the corresponding section of the inner peripheral surface of the cavity that retains the deflectable portion in a deflected state relative to the central portion.

Abstract: A dish structure includes: (a) a bottom container having an outer cylindrical wall and a diametric base interconnecting the outer cylindrical wall; (b) a lid having an inverted cylinder provided with a downwardly extending cylindrical wall, the lid being sized so that the downwardly extending cylindrical wall associates with the outer cylindrical wall of the bottom container; (c) a frictionally-engagable member integral with the surface of the downwardly extending cylindrical wall of the lid; (d) a frictionally engagable member integral with the surface of the wall of the bottom container; and (e) at least one of the bottom container and the lid being formed of flexibly deformable synthetic plastic material, which is thin enough to have the characteristics of being flexibly deformable. By such structure the lid and bottom container base may remain loosely assembled (unlocked), or by user manipulation be tightly assembled into a reversibly locked configuration.

Abstract: A mandrel for supporting a stent and rollers for pressing a radiopaque marker into a stent are disclosed. The mandrel can have a forward portion for carrying the stent and a rear portion for urging the stent forward portion into a gap between the rollers. The mandrel may be pushed or pulled into the gap, which is sized to allow the rollers to press the marker into engagement with the stent. Prior to moving the mandrel into the gap, the marker may be placed on a surface of the stent or partially inside a recess in the stent. Several markers can be efficiently and uniformly pressed onto the stent by moving the mandrel into the gap in one continuous movement in an axial or lateral direction. Markers can also be pressed onto the stent by placing the stent in the gap and rotating the stent about its central axis.

Abstract: The present invention relates to a hose system, in particular for vehicle tires, having a hose (12) formed into a ring, comprising polyurethane and having an at least substantially constant wall thickness along the extent thereof, wherein the substantially constant value of the wall thickness is in the range between 0.1 mm and 0.4 mm.

Abstract: A method of forming a friction plate is provided. The method includes force fitting a friction material onto a base to form a mechanical connection between the friction material and the base. A friction plate is also provided. The friction plate includes a base and a friction material force fit onto the base such that a mechanical connection is formed by a shape of the friction material and a shape of the base.

Abstract: Systems and methods for a multi-vessel device generally comprises a first vessel and a second vessel, wherein the first vessel may suitably couple to the second vessel and the first vessel may comprise a shot glass and the second vessel may comprise a bottle that contains a spirituous liquid. In an embodiment, an exterior bottom portion of the first vessel may suitably couple to a top portion of the second vessel via a friction fit, a stopper, or a screw. Alternatively, an interior bottom portion of the first vessel may suitably couple to a top portion of the second vessel via a friction fit, a stopper, and a screw. In some embodiments, the first vessel may couple to the second vessel so as to seal the second vessel. Among various representative embodiments, the present invention may comprise a method for manufacturing, packaging and/or selling the multi-vessel system or device.

Abstract: The invention relates to a component for absorbing and/or transmitting mechanical forces and/or moments, comprising at least one dimensionally stable component element (12, 12?, 12?, 2??, 12??), which has at least one hollow-profiled section (14), and at least one hollow-profiled component element (16) consisting of fibre-reinforced plastic, which can be partially received by the hollow-profiled section (14) of the dimensionally stable component element (12, 12?, 12?, 12??, 12??), and can be arranged in a form-fitting manner in the hollow-profiled section (14) of the dimensionally stable component element (12, 12?, 12?, 12??, 12??) by means of raised portions (32, 32?) which extend radially inwards and/or depressions (38, 38?), recesses or holes which extend radially outwards, wherein the inner circumference (24) of the hollow-profiled section (14) of the dimensionally stable component element (12, 12?, 12?, 12??, 12??) and the outer circumference (26) of the hollow-profiled component element (16) consisting

Abstract: A technique and apparatus for heat dissipation in electrical devices is described. A bulk body may be configured with a plurality of radiating devices so that the bulk body may be divided into smaller bulk bodies to be used in conjunction with other electrical type assemblies to quickly and efficiently provide for a heat dissipation sub-assembly. In one aspect, the bulk bodies may be configured with internal voids such as a duct or tunnel interconnecting at least one input port and at least one output port for aiding in heat dissipation of an electrical device employing bulk body technique.

Abstract: The present invention discloses a needle guard (100) for protecting a needle (210) from accidental contact, comprising; a spring loaded needle shield (110) being pivotable from an open position in which the needle shield (110) is separated from the needle (210) to a closed position in which the needle shield (110) is enclosing and protecting the needle (210); and a mounting base (140) having a constant spatial relationship with the needle (210) when the needle guard (100) is being used, the mounting base (140) being movably connected to the needle shield (110) for enabling movement between the open and the closed position; wherein the needle shield (110) is having a passive state and an active state, the needle shield (110) being urged towards the closed position when in the active state. Methods of manufacturing the needle guard (100) and a needle guard assembly comprising the needle guard (100), are also disclosed.

Abstract: The described embodiments relate generally to components used in a portable computing device and more particularly to mounting a component with a component extractor that allows a component to be removably affixed to a portable computing device. The component extractor can include a compressible securing portion configured to secure the component to the portable computing device and an extracting portion arranged to apply an extracting force to the compressible securing portion to detach the component from the portable computing device. The compressible material can be made of a highly extensible material. In one embodiment, a low friction material can be provided along an edge of the component such that the component extractor slides along the edge during an extraction procedure.

Abstract: An apparatus and method for plugging a tubular bore is disclosed herein. The apparatus comprises: a shaft member; one or more cylindrical compressible seals slideably disposed around the shaft member, wherein the shaft member passes axially through the one or more cylindrical seals; one or more cylindrical hard sleeves having one or more conical ends slideably disposed around the shaft member and adjacent to the one or more cylindrical seals; a flange attached at or near a distal end of the shaft member, wherein the flange retains the cylindrical sleeves and cylindrical seals on the shaft member; and a pulling mechanism disposed at or near a proximal end of the shaft member, wherein the seal is positioned between the flange and the one or more cylindrical hard sleeves such that compression of the seal causes it to expand away from the shaft member.

Abstract: The invention relates to a solenoid housing fabricated by a method which allows a manufacturer to produce a high performing product while minimizing manufacturing complexity and time. The instant invention uses cold-forging techniques to reduce the need for fine machining processes.

Abstract: A lens assembly method for assembling a plurality of lenses into a plurality of lens tubes is disclosed. The method includes providing a lens assembly tool comprising a lens receiving frame, a positioning plate, and a pressing plate forming a plurality of pressing punches; positioning a plurality of lens tubes in a plurality of receiving holes of the lens receiving frame; positioning one lens in each of the lens tubes; positioning the positioning plate on the lens receiving frame with the lens tubes extending through a plurality of through holes of the positioning plate; and positioning the pressing plate on the positioning plate with the pressing punches entering into the lens tubes to push the lenses into the lens tubes.

Abstract: The closeable opening device according to the invention comprises a base (2) in which a cutting element (3) is supported. Driving dogs (42) in the closing screw cap (4) engage with driving dogs (32) in the cutting element (3), so that the cutting element (3) is displaced in the base (2) to the end position upon initial opening. At least one first rotational stop (5, 50) ensures that the cutting element remains in position and neither moves upward in an undesired manner when the screw cap is opened, nor can be displaced downward by any relative displacement of the two parts, thus causing same to fall into the container. The first rotational stop (5) is made of a rib (50) on the inner face of the spout (20), which interacts with a recess in the form of a flat spot (35) on the cutting element (3).

Abstract: A pre-notched drip edge assembly and related method includes a plurality of drip edge sections interconnected end-to-end to form a continuous water barrier along a roof edge. Each drip edge section has a formed one-piece construction with a top flange and a bottom flange having an inverted L-shape with upper and lower legs. The forward edges of the top flange and the upper leg are integrally interconnected along a folded-over nose having a wedge-shape. A pair of notches are formed in the opposite ends of each drip edge section which extend through the upper edge of the lower leg and the forward edges of the upper leg and the top flange to define flat end tab areas that are inserted into the noses of the next adjacent drip edge sections to horizontally and vertically locate the same along the building roof.

Abstract: A device is disclosed for wearing on a wrist or other body part including a central piece held on the body part by a pair of straps. The proximal end of a strap includes a mounting pin for sliding into and out of a slot on the central piece. The proximal end of the strap further includes a positioning curve which mates with a correspondingly shaped receiving curve on the central piece when the strap is properly affixed and centered on the central piece. When properly affixed and centered on the central piece, the positioning curve on the strap aligns with the receiving curve of the central piece, so that the positioning and receiving curves are at their lowest energy state, resisting lateral movement out of a centered position.

Abstract: An anchoring device including an anchoring element suitable for being anchored an object of construction material with the aid of mechanical vibrations. The anchoring element includes a thermoplastic material and a tool. The thermoplastic material forms at least a part of a radially outer surface of the anchoring element, and the tool has a proximal portion and a broadening portion distally of the proximal portion. The broadening portion has an outer second cross-section, the second cross section being larger than the first cross section but being adapted to the first cross section so that the tool can be moved with respect to the anchoring element while the broadening portion is in the axially-extending opening and locally expands the anchoring element while thermoplastic material of the anchoring element that surrounds the broadening portion is in a solid state.

Abstract: A double walled container is provided for insulating a beverage. An outer insulating shell or container is secured to the inner container that holds the beverage. A gap exists between the outer container and inner container and the air in the gap acts as an insulating barrier. The inner container is preferably a standard aluminum container. The outer container is preferably made from aluminum or a plastic polymer.

Abstract: A lashing platform includes a base frame, a setting plate resiliently supported on the base frame, a plurality of screwing devices for inserting twistlocks into container fittings or removing twistlocks from container fittings, a plurality of magazines for accommodating the twistlocks, and a plurality of transfer devices for transferring a twistlock from a magazine to a screwing device or from a screwing device to a magazine. The lashing platform being characterized by at least two units, which are each formed by at least two screwing devices, at least one transfer device, and at least one magazine and which can be moved relative to each other in the longitudinal direction of the lashing platform within the base frame, at least one drive for moving the units, and a controller for moving the units into positions in which the screwing devices have access to the container fittings of containers of different size.

Abstract: A furnace repair device and method therefore is accomplished by including pipe of suitable length and strength to have at least one swedged end permitting assembly in female to male relationship, which permits a proper securing of the replacement pipe in a desired position in the heat exchanger.

Abstract: Disclosed herein is a base for a hard disk drive including: a base plate formed with a motor seating part; and at least one through hole formed along an outer circumference of a seating part of the base plate and formed to axially receive a coil winding part of a stator assembly of the motor, wherein the through hole is configured of a first through groove corresponding to the coil winding part and a second through groove extending from the first through groove and formed so that a radial forming width of the second through groove from a center of the seating part is narrower than that of the first through groove. According to the preferred embodiment of the present invention, it is possible to improve and maintain the rigidity of the base while avoiding the coil winding part by structurally changing the through hole of the base.

Abstract: A preswirler of a gas turbine engine includes an outer ring. The outer ring includes an outer flange with a plurality of first holes, and an outer cylindrical portion extending from the outer flange. The preswirler also includes an inner ring. The inner ring includes an inner flange spaced apart from the outer flange. The inner ring also includes an inner cylindrical portion located within the outer cylindrical portion and a back portion extending from the inner flange to the inner cylindrical portion. The inner ring further includes a plurality of second holes.

Abstract: A method of manufacture of a power assisted steering control valve including a pinion shaft, an input shaft and a torsion bar comprising following steps: receiving into clamping fixtures of an assembly machine a pre-assembled loose assembly of said pinion shaft, input shaft and torsion bar, establishing and recording a predefined rotation clearance between a shoulder of said pinion shaft and an end of said input shaft, rotating said input shaft in opposing directions between rotation limiting stops to said pinion shaft, pressing a first end of said torsion bar into said input shaft to form a locked together assembly of said input shaft and said torsion bar, and axially advancing said assembly of said input shaft mid said torsion bar into said pinion shaft so as to press a second end of said torsion bar into a locked together assembly with said pinion shaft.

Abstract: Mounting rings and methods for mounting structures to shafts are provided. The rings and methods may be used to mount other rings or housings to a shaft. The rings are characterized by having flexible inner diameters that can deflect under a radial load. The radial deflection of the inner diameter permits the rings to deflect and engage an outer diameter of a shaft. The engagement of the rings with a shaft provides at least some resistance to movement, for example, rotation and/or axial displacement, of the shaft relative to the ring and structure. In one aspect, the ring has a closed, hollow, construction, for example, a circular, oval, or polygonal closed, hollow construction. The ring may include a plurality of indentations, such as slots, on the inside diameter of the ring that may relieve at least some of the circumferential stress in the ring. Methods for using the rings to mount a structure to a shaft are also disclosed.

Abstract: An implant assembly comprises a stem and an augment. The augment includes a porous outer region which is integrally formed onto a solid inner region. The augment further includes, solid posts integrally formed on the solid inner region and extend through the porous outer region to the outer surface of the augment. The posts are integrally formed with and surrounded by the porous region and are designed to allow assembly of the augment to the stem without damaging the structure of the porous region. A method of attaching the augment is described, wherein a tool is designed to grip to posts of the augment and apply loads through these posts during assembly.

Abstract: The instant disclosure relates to a zipper head. The zipper head includes a main structure, a flexible member, a securing member, a pull tab, a guiding member, and a shaft. The main structure has a first fixing portion and receives the flexible member. The securing member has a second fixing portion corresponding to the first fixing portion. The securing member contacts with the flexible member. The guiding member is pivotally connected to one end of the main structure and contacts with the securing member. A receiving space is cooperatively defined by the main structure, the securing member, and the guiding member. A fixing end of the pull tab is disposed in the receiving space. The shaft penetrates the main structure and is pivotally connected to the securing member. The instant disclosure also discusses a method for replacing the pull tab of the zipper head.

Abstract: A light apparatus is mounted to a surface of a building. The apparatus has at least one elongate mounting extrusion engaged to the surface. At least one elongate trim extrusion is mounted to the mounting extrusion and extending forward therefrom. The trim extrusion has a forward edge and an upwardly and rearwardly sloping surface extending from the edge. At least one light source is mounted to at least one of the mounting extrusion and trim extrusion.

Abstract: A highly corrosion and abrasion resistant coating combination for high precision metal tubing comprises a passivation layer applied to the tubing and a thermoplastic jacket extruded onto the passivated tubing. In an embodiment, the passivation layer is formed by electropolishing the exterior surface of the tube to remove impurities in an upper layer of the tube.

Abstract: A method for securing a captive screw assembly within a hole in a panel cover with a press. The press is centered over a hole in the panel and clamped to the panel. A force arm on the press is lowered to drive the captive screw into the hole and then the press is released from the panel.

Abstract: A stacked ring 2 that forms a transmission belt is formed by stacking a plurality of elastically deformable ring materials 201 to 206 together. Shot peening is performed on surfaces of the ring materials 201 to 203 of the first layer as the innermost layer to the third layer so that a residual compressive stress in the ring materials 201 to 203 is higher than that in the ring materials 204 to 206 of the fourth to sixth layers. The outer circumferential length of the ring material 203 of the third layer is longer than the inner circumferential length of the ring material 204 of the fourth layer, and the ring material 203 of the third layer is press-fit into the ring material 204 of the fourth layer.

Abstract: The invention relates to a compression tool (2) for the permanent connection of workpieces (14, 16, 18, 30, 34) having two pivot elements (4), which each have a compression jaw (10), and having at least one rotational axis (6), on which the pivot elements (4) are hinged, wherein the inner contours of the opposing compression jaws (10) form a receiving area (12). The present invention is based on the technical problem of disclosing an alternative compression tool (2), with which a permanent connection can be provided between workpieces (14, 16, 18, 30, 34) by axial compression. The technical problem is solved in that the inner contours have at least one sliding face (22), which is inclined relative to the receiving area axis (20). A compression tool (2) can thus be provided which, starting from a radial inward movement, performs a compression in the axial direction, nonetheless requires little installation space, and offers weight advantages due to a smaller axial extension, for example.

Abstract: A method for producing a semifinished part (20) for an implant, in particular for an intraluminal endoprosthesis, which comprises the following steps: a) providing a first sleeve (11) from a first metallic material and at least one second sleeve (12, 13) from a second metallic material, b) arranging the first sleeve (11) and the at least one second sleeve (12, 13) into one another in such a manner that the sleeve combination (10) forms at least a press fit between said sleeves, and c) forming the sleeve combination (10) at an increased temperature by means of extrusion. The invention further includes a method for producing an implant, to a corresponding semifinished part or a corresponding implant, respectively.

Abstract: A ripper tool for a tunnel boring machine includes a tool body and a plurality of cutting element inserts. The tool body has a plurality of socket cavities. A tool body blank can be heat treated to increase the hardness of the tool body blank. The socket cavities can be machined in the tool body blank after the tool body blank is heat treated. The cutting element inserts are mounted to the tool body. The cutting element inserts are respectively press fit in the socket cavities. The ripper tool can be pivotably mounted to a cutter head of the TBM.

Abstract: An example ram air turbine generator assembly includes a generator housing that holds a generator in axial alignment with a hydraulic pump. The generator housing includes a wall having contacting portions that contact a stator of the generator and spaced portions that are radially spaced from the stator. The generator wall is designed to be strong enough to withstand HLSD and windmilling vibrations, while flexible enough to accommodate thermal expansion.

Abstract: An on-board fuel filter for a carburetor includes a filter element made from a non-metallic material. The material can be a polymeric material and may be a woven or a non-woven material. The fuel filter may be adapted to have an interference fit with a fuel passage of the carburetor and constructed so that the fuel filter is substantially not plastically deformed by the interference fit. Filter elements may be cut from a sheet of polymeric material and aligned with a fuel passage opening in a body of the carburetor while being cut.

Abstract: A rotary tool (11) for use with a rotary driving unit (12) for inserting a component (14,14?,14?) through a surface of a workpiece made of a material showing friction-induced plasticity such as aluminum, includes a tool body (22) having a working end (24) defining a shoulder portion (26) and a securing device (28,28?) for selectively engaging the component to impart rotation thereof in a first direction while applying an axial force of a sufficient magnitude onto the component to produce insertion thereof by plasticizing the material through friction. The shoulder portion is provided with a deburring device (34) capable of being displaced from an inoperative position upon rotation of the tool body (22) in the first rotation direction (30), to an operative position whenever the tool body is caused to rotate in an opposite direction (30?), to provide deburring of the workpiece surface.

Abstract: A manually actuated robotic tool changer includes a rapid coupling mechanism. The tool changer includes a master unit having a piston moveable along its axis between an unlocked position and a fully locked position, and a tool unit that is coupled to the master unit when the units are adjacent and the piston is moved to the fully locked position. A piston movement control mechanism selectively allows free axial motion of the piston between the unlocked position and a nearly locked position, when the control mechanism is actuated. The piston may be biased toward the locked position, allowing the master and tool units to be rapidly coupled by positioning the units adjacently, actuating the control mechanism to allow the piston to rapidly advance to a nearly locked position, releasing the control mechanism to restrict free axial motion of the piston, and manually advancing the piston to a fully locked position.

Abstract: Power tools with housings or hammer cases include a thin wall titanium shell tapering from a smaller forward section to a larger rearward section; with at least the rearward section having a wall with a substantially constant wall thickness and an interface flange that includes an outer perimeter profile that is curvilinear and defines a plurality of outwardly extending detents that provide an interference fit with the wall of the hammer case.

Abstract: Embodiments of the invention describe optical cable housings including fiber termination units to couple optical fibers components to lenses. As in prior art solutions, embodiments of the invention utilize said fiber termination units to couple and optically align the optical fiber to the lenses; however, embodiments of the invention include flat-sided structures to more securely couple the optical fiber to the lenses; furthermore, said structures are more suitable for mass manufacturing compared to prior art solutions. Discussion herein of connectors and receptacles refers to providing a mechanical and communicative connection. The mating of the connector/receptacle may be facilitated via housing and alignment structural features, and typically includes contact of the electrical contacts and alignment of fiber optical signal transmission elements.

Abstract: An improved hand tool includes an improved handle apparatus. The handle apparatus includes an elongated handle having a non-circular external cross-section and further includes an elongated support that comprises an elongated end extending from the handle and having a substantially circular cross-sectional shape. A tool apparatus includes a tool and a socket, with the socket having an opening formed therein. The end of the handle apparatus is received with an interference fit in the opening formed in the socket to retain the handle apparatus and the tool apparatus together. A collar can additionally be provided about the socket to improve the aesthetic properties of the connection between the socket and handle and to increase the toughness of the connection therebetween.

Abstract: A catheter is provided for medical ultrasound imaging that can be effectively used in combination with other imaging modalities to detect medical structures of interest as well as the catheter. Markers are added to the catheter with precision, which provides a means to merge the images from different modalities. Using a template, apertures for marker placement are formed in the catheter after creating the catheter housing. The ultrasound array may be used for accurate positioning of the template. Alternatively or additionally, a rigid insert with markers connects with the array. The insert holds the markers in place and may reduce artifacts in ultrasound scanning due to flexing of the array.

Abstract: A device comprises a frame, a plurality of fingers, and an integrated slide hammer to drive a coupler onto a first pipe. The device may drive the coupler backwards onto a second pipe. The device may position the coupler for fusion without having to remove the device for the backward driving of the coupler. The device may be used above ground or in a trench.

Abstract: A method of forming a wearable surface of a body sized and configured to comminute material includes positioning at least one first insert in a first portion of a first metal structure at a first depth, positioning at least one second insert in a second portion of the first metal structure at a second depth and positioning at least one third insert in a third portion of the first metal structure at a third depth. At least one of these depths is different than the other depths. A second metal structure may be positioned adjacent to the first metal structure and at least one explosive material may be detonated to attach the inserts to the first metal structure. Material may then be removed to shape and form a wearable surface of a crushing body, which may be, for example, a crushing member or a segment of a crushing member.

Abstract: A disconnect assembly includes a head coupler portion and a tool coupler portion. The head coupler portion includes: a threaded portion on a first part of an exterior surface to connect to a wedge frame, a longitudinal bore, a rod configured to slide longitudinally within the longitudinal bore, and a set of annular protrusions on a second part of the exterior surface. The tool coupler portion includes: a threaded bore configured to mechanically attach the tool coupler portion to the tool, and a channel to receive a head coupler portion. The channel includes a set of grooves corresponding to the set of annular protrusions on the head coupler portion. When the head coupler portion is connected to the tool coupler portion, a ram from the hydraulic tool engages the rod to apply force to an object in the wedge frame.

Abstract: There is provided a base for a hard disk drive formed by press processing, the base including: coupling parts corresponding to coupling units to be coupled to components for operating the hard disk drive and formed by depressing a predetermined region of one surface of the base to thereby protrude the predetermined region outward from the other surface thereof, wherein the coupling parts are closed by a cap member.

Abstract: A pin tool assembly for forcibly removing a first type of retaining pin from digging teeth arranged in side-by-side relation across a forward edge of a digging implement. The pin tool assembly includes a tool defining a blind recess laterally disposed to one side of the tool. The tool assembly further includes an elongated extractor pin having an enlarged head portion and a shank portion extending from the head portion. Cooperating instrumentalities maintain and position the extractor pin relative the tool such that, when a force is applied to the tool, the free end of the shank portion of the pin engages with and forcibly extracts the retaining pin from the digging tooth. Preferably, the tool further defines a plurality of openings for snugly accommodating a series of retaining pins therein.

Abstract: An acetabular cup prosthesis comprising an acetabular cup having a rim and comprising a metal band applied around the outer circumference of the acetabular cup prosthesis and adjacent to said rim.

Abstract: A washing machine includes a main body defining an outer appearance, a tub disposed within the main body, a main drum rotatably mounted in the tub, a sub drum mounted in the main drum to be relatively rotatable with respect to the main drum, an outer shaft for rotating the main drum, an inner shaft for rotating the sub drum, being disposed inside the outer shaft, and a driving motor having a stator, an outer rotor connected to the inner shaft that is rotatable outside the stator, and an inner rotor connected to the outer shaft that is rotatable inside the stator, wherein the driving motor independently drives the main drum and the sub drum.

Abstract: The shank (12) of a disposable rotary cutting tool (10) comprises a pipe section (16) cut from a drawn metal pipe. The tool head (14) is formed from a cut-out (18a, 18b) of a drawn metal sheet or a section of a metal tube by non-cutting machining. The pipe section (16) and the tool head (14) are advantageously attached by force fitting.