Abstract: An elongate neck of a toothbrush extends askew to an elongate handle which encloses a rotary motor. At the end of the neck is a head to which brush blocks are mounted for movement relative to the head. The transmission includes a driving member and a driven member for transmitting torque from the motor, the driving member rotating about a driving member axis, and the driven member rotating about a driven member axis. A crankshaft mounted to the head converts rotation of the driven member to movement of a brush block, the driven member axis is skewed or offset relative to the driving member axis, and the driving member and the driven member are connected by a helical spring flexible coupling. One brush block rotates in an oscillating manner and a pair of brush blocks oscillate, in a linear manner, 180 degrees out of phase.

Abstract: A brush for cosmetic- or care-product application to human skin, in particular for lip-cosmetic application, wherein a bunch of fibers is bent in a shape of a U and, in the vicinity of a bight of the U, is fixed in a recess of a shank of the brush, and wherein the fibers are pointed towards both tips.

Abstract: A tool system is disclosed having a body including a handle extending therefrom, a detachable head including a working tool, and a multi-part connector for detachable connecting the head to the body, the connector including opposed, flexible members positioned on the body towards an end of the body and means on the head for connecting with the opposed flexible members, the opposed flexible members and the means for connecting with the flexible members working in concert to detachably secure the head to the body. The handle of the tool system can be offset with respect to the axis of the body and the detachable head.

Abstract: A component spatula tool system including an elongate grip handle structure, and a generally planar blade which is releasably grippable by the handle structure. The handle structure has a pair of opposed, selectively openable and closeable, matchingly grip-patterned clamping pads that define a nip region, the blade has opposite sides possessing matchingly grip-patterned clamping sites whose grip patterns are complementary to those of the clamping pads, and the clamping pads and clamping sites accommodate, via operative interengagements of their respective grip-patterned characteristics, positive-lock, universally invertible, plural-position clamp locking of the blade within the nip region.

Abstract: With a windscreen wiper system for motor vehicles with at least three connections or fixings at intervals from one another for screw-free installation of the windscreen wiper system on vehicle bodywork, the fixings consist respectively of a fixing element which can be pushed into an attachment or fixing hole where it can be anchored by engagement. At least one fixing element has a grommet in elastic material which can be inserted into the attachment or fixing hole, designed with at least one projection acting as a catch. In order to reduce the installation force, at least one cavity is arranged radially inwards in the area of and opposite the projection with reference to a grommet axis.

Abstract: A rubber material, in particular for wiper blades of windshield wipers or for automotive tires, is described, containing at least one grade of rubber, at least one filler and processing adjuvants. Of at least one of the grades of rubber present, the rubber material contains a first and a second fraction which differ in viscosity in the unvulcanized state.

Abstract: The invention refers to a bucket equipped with a rinsing basket installed in its open end and wheels installed in its bottom part. It is characterized in that it incorporates a pair of wheels going in the same direction placed before a crossectional plane that contains the center of gravity. The bottom part contains an ample rear section (8) behind the pair of wheels (5) and a narrow frontal portion (7) that extends upwards and outwards and located before the wheels (5), configured in such a manner that when the bucket is in the at rest or stationary position it is only supported by that posterior portion (8), while during the rinsing of the mop, when we press down the frontal part of the bucket with said mop, the bucket will oscillate slightly and will be able to travel if it is set to rest on the wheels (5) by elevating the rear part (8) that will leave the floor during this travelling stage.

Abstract: A walk behind battery operated cleaning apparatus for scrubbing, cleaning and vacuuming surfaces such as floors and carpets, which is self propelled, includes a power base, which is driven from the rear in forward or reverse direction by rear wheels, and includes swivel wheels which are adjustable for height, which may have a detachable floating electric motor driven rear floor machine type cleaning assembly carried by and offset from the center of the power base, a detachable floating electric motor driven front floor machine type cleaning assembly carried by and offset from the center of the power base, and which has a reservoir tank for storing cleaning solution to be dispensed ahead of the cleaning assemblies.

Abstract: A backpack blower comprising a blower which has an air intake opening, a backpack frame which is used to support the blower on the back of a user, and a back pad that is coupled to the backpack frame and contacts the back of the user. The back pad is composed of a cushion material and has a back surface contacting the back of the user and an opposite surface. The air intake opening communicates with at least a portion of the opposite surface, so that the air intake noise of the blower can reach at least the portion of the opposite surface.

Abstract: A dust collecting unit of a vacuum cleaner has a dust collecting body including a first dust separating unit for separating dust from air and a first dust storing unit for storing the separated dust. A cover member is coupled to the dust collecting body and a second dust separating unit for further separating dust from the air is formed in the cover member. A second dust storing unit for storing dust separated by the second dust separating unit is formed in the dust collecting body. A dust passage for guiding the dust separated by the second dust separating unit to the second dust storing unit is also provided on the dust collecting body.

Abstract: A dust suction device (2), particularly in the form of an industrial vacuum cleaner, has a blower device (6) for generating an intake flow (S), a filter surface (16) for separating dust and dirt particles from the intake flow (S), a collecting chamber (18) for collecting the dust and the dirt particles which is located upstream of the filter surface (16) with respect to the intake flow (S), a clean air chamber (20) which is arranged downstream of the filter surface (16) and is separated from the collecting chamber (18) by the filter surface (16), with the filter surface (16) being acted upon in some areas by a cleaning flow of the blower device (6) which flows through the filter surface (16) in the direction opposite the direction of the intake flow (S), and an adjustable dividing wall (30) provided in the clean air chamber (20) and separating a vacuum area (40) that can be generated by the blower device (6) from an overpressure area (38) that can likewise be generated by the blower device (6).

Abstract: A portable vacuum canister is disclosed for vacuuming debris by a hand-held suction hose and for transferring the debris down through the vacuum canister and into an existing garbage disposal for grinding, where it is then washed down the drain. The vacuum canister adapts and slides into an existing disposal opening.

Abstract: An exemplary hinge assembly (100) includes a shaft (10), a follower (20), a cam (30), a sleeve, a first elastic element (60), and a second elastic element (65). The follower having a projection (23) is rotatable in unison with the shaft. The cam has a cam surface (31). The cam is located around the shaft, with the cam surface abutting against the projection. The sleeve is located around the shaft, and is non-rotatable relative to the cam. The first elastic element has a first arm (61) and an opposite second arm (63). The first elastic element is located around the shaft, with the first arm being fixed relative to the sleeve, and the second arm being fixed relative to the shaft. The second elastic element is located around the shaft and abuts against the cam to bias the cam toward the follower.

Abstract: A hinge for vehicle doors so as to provide for door front edge opening operation, also known as suicide operation, comprises fastening elements provided with fixed pivot pins and with sliding guides, which can be housed respectively in the thickness of the door and in a corresponding pillar; linkages for connecting the fastening elements with their first extremity, hinged on the fixed pivot pin of one of the fastening elements and with a second extremity including a shoe engaged in the sliding guide of the other fastening element; and a joint interposed at the extremities of the linkages which pivotally couples the linkages to each other allowing their relative angular mobility. The fastening elements further comprise a control means in cooperative engagement with the sliding guide and shoe for adjustably controlling the maximum range of rotation of the hinge.

Abstract: A vehicular door handle assembly comprises a secondary latch with a default active condition for preventing inadvertent opening of a door during an impact, such as a collision. The door handle assembly comprises a primary actuator and a secondary actuator in operative communication with the secondary latch for selective deactivation thereof. When the user's hand grasps and pulls the primary actuator in a normal fashion to open the vehicle door, the user's hand simultaneously grasps the secondary actuator and moves the secondary actuator to deactivate the secondary latch and allow movement of the primary actuator and thereby open the vehicular door.

Abstract: The method of treating the flax fibre consists of cleaning, cottonisation, retting and drying of the raw material, which could be short flax fibre No 2, combing wastes and other wastes. The opening of the flax fibre is carried out 3 times: first before the cleaning, second before the retting, and third after drying, which is done after cottonisation. This is carried out by means of electro-hydraulic treatment to a processed material placed in a liquid. This invention allows for quality improvement of the flax fibres and simplification of the processing.

Abstract: Apparatus for fastening includes a linkage and a body. The linkage has an end enlarged to form a ball. The body forms a carabineer's hook. A side of the body has a guideway which is open at a side and at an end of the body. Most of the guideway is dimensioned to receive the linkage, but not the ball. Near the end of the body, the guideway forms a dock which opens at the side, wide enough to receive the ball. A slide is held in the guideway and has a fork dimensioned to receive the linkage while blocking the ball. The slide is movable toward and away from said end so that the fork alternately uncovers and partially covers the dock, alternately confining and releasing the ball. The linkage is free to rotate through at least 90 degrees, from parallel to the guideway to normal to the side, while the fork confines the ball in the dock. Optionally, the linkage in hingedly connected to a pedestal adapted for attachment to objects.

Abstract: A connecting clip for connecting two members to each other at apertures through the two members. The connecting clip includes a first section connected to a second section by a living hinge. The first section includes a general ring shaped portion forming a hole, a first stationary projection extending away from the general ring shaped portion at a rear side of the general ring shaped portion, and a movably second projection connected to the general ring shaped portion by another living hinge. The second projection is movable to a deployed position extending out of the hole with an end of the second projection extending in a direction different from the first projection. The second section includes a pushing portion adapted to push against the second projection when the second section is moved from an open position to a closed position to thereby move the second projection to the deployed position.

Abstract: A clip comprises a pin, and a hollow bush adapted to receive the pin therein. The bush includes a flange and a bush body having an opening which is formed by partially cutting off a peripheral wall thereof and adapted to receive therein a pin shank in a direction orthogonal to an axial direction of the bush body. The bush body and the bush flange are adapted to be expanded in a radially outward direction of the bush body about a position opposed to the opening, in a hinged manner. The pin has a shank that includes a protruding portion which has a narrow region formed near a distal end of the pin shank, causing no expansion in an outer diameter of the bush body in the radially outward direction when the pin is in a non-fastened position, and a wide region adjacent to the bush flange, causing an expansion in the outer diameter of the bush body when the pin is in a fastened position.

Abstract: The present disclosure relates to the use of coextruded or integral sealing ribs on zipper flanges to enhance the quality of the sealing between the flanges and the walls of a reclosable package. The coextruded sealing ribs may be made from sealing resins or similar materials. Additionally, grip strips are placed on the opposite side of the flanges from the ribs in order to improve the quality of the sealing even further and to inhibit inner flange sealing.

Abstract: A snap hook has a body, a sliding latch, a resilient element, a swivel and a connector. The body has a shaft and a hook. The shaft is tubular and has an upper end and a lower end. The hook is connected to and extends from the upper end of the shaft. A guide slot is defined longitudinally the shaft and communicates with the lower end of the shaft. Accordingly, no sharp edges are formed near the sliding latch so a person opening the snap hook will not be injured. In addition, assembling the snap hook is easy.

Abstract: A lace is provided for lacing various objects such as footwear, clothing, bags, etc. The lace comprises an elastic cord having end segments for tying a knot and a stabilizing member on one of the end segments. The stabilizing member is different from the bits of the lace adjacent thereto in the shape and/or material thereof and arranged so that it appears held in place in the knot when the knot is finished. Also provided is a method of forming a knot out of the lace. The method comprises forming a desired knot until the knot is ready to be firmly tied and then pulling the end segments of the elastic cord until the stabilizing members appear held in place in the knot, which is thus finished.

Abstract: An apparatus for embossing and compacting a textile web has a calender with a body having a surface. An array of embossing formations project from the body surface and each have an outer face directed away from the body surface and formed as a narrow strip pressable into the web.

Abstract: A multi-stage flow control apparatus for use during the processing of a semiconductor substrate is provided. The multi-stage flow control apparatus includes a first inlet and a second inlet, an outlet, and a first throttle valve stage coupled to the first inlet. The first throttle valve stage includes a first throttle valve plug located within the first throttle valve stage. The first throttle valve plug is configured to control the amount of airflow through the first throttle valve stage by modulating the distance between the first throttle valve plug and faces of the first throttle valve stage. The multi-stage flow control apparatus further includes a second throttle valve stage coupled to the second inlet. The second throttle valve stage includes a second throttle valve plug located within the second throttle valve stage.

Abstract: In a method of fabricating a semiconductor device, a level of metal is formed within an interval dielectric. The level of metal includes a first metal line separated from a second metal line by a region of the interlevel dielectric. The region of interlevel dielectric is removed between the first metal line and the second metal line. A high-k dielectric is formed between the first metal line and the second metal line in the region where the interlevel dielectric was removed such that a capacitor is formed by the first metal line, the second metal line and the high-k dielectric.

Abstract: A toot for servicing pneumatic brake systems and the like includes a primary structural member, and a pair of mounting members or plates. The tool can be readily secured in a vise or the like, and a pneumatic valve to be replaced can be secured to a first one of the mounting plates. A replacement pneumatic valve is secured to the other of the two mounting plates, preferably in the same orientation as the pneumatic valve being replaced. The air lines can be readily disconnected from the ports of the pneumatic valve being replaced, and reattached to the new pneumatic valve in a one-by-one manner. The tool rigidly secures the pneumatic valves to facilitate disconnection and attachments of the air lines by a technician using a wrench or the like, and the placement of the two pneumatic valves in a side-by-side configuration in the same orientation permits the air lines to be readily reattached to the correct ports of the new pneumatic valve.

Abstract: Apparatus and methods for filament crimping. In one embodiment, the apparatus comprises a body and a filament crimp element. The filament crimp element comprises a first set of cavities disposed at a spacing which creates a first set of features and a second set of cavities disposed at a spacing which creates a second set of features. The first and second set cavities are substantially opposite one another. The first set of features are adapted to be placed at least partially within the second set of cavities and the second set of features are adapted to be placed at least partially within the first set of cavities. Methods and apparatus for the manufacture of the device are also disclosed. In addition, methods for automated placement and manufacture of assemblies using the crimp elements are also disclosed.

Abstract: Disclosed herein is a method of fabricating a high-pressure gas cylinder, the method comprising providing a cylinder body having at least one opened end portion, providing a gas for preventing oxide film-formation on an inner surface of the cylinder body, heating the opened end portion of the cylinder body, and reducing an opened area of the opened end portion by compressing the opened end portion. In the process for deforming or deforming end portions of the cylinder body, the oxide film is prevented from being formed on the inner surface of the cylinder body and the cylinder body is plastic-deformed, thereby preventing the plated layer having been formed from being damaged.

Abstract: The present invention, which aims at providing a component mounting method and a mounter capable of correcting, with high accuracy, a mounting position of a component, includes: a mounting head (105); a recognition unit (108) including a shutter camera (111b) and instructing it to start taking an image of a component (103a) when the mounting head (105) arrives at a predetermined position; and a main control unit (160) (i) correcting a position of the component shown in the image taken by the shutter camera (111b), based on a first distance over which the mounting head (105) moves during a time period from when the instruction to start taking the image is given to when camera exposure by the shutter camera (111b) is performed, (ii) correcting the mounting position at which the mounting head (105) is to mount the component (103a), based on the corrected component position, and (iii) controlling the mounting head (105) so that it mounts the component (103a) at the corrected mounting position.

Abstract: A method of manufacturing coils that includes forming a predetermined number of U-shaped conductor segments. The U-shaped conductor segments are twisted using first twisting formation jig composed of a first inside ring and a first outside ring and a second twisting formation jig composed of a second inside ring and a second outside ring. The U-shaped conductor segments that are twist formed in radially inward directions are radially compressed. The U-shaped conductor segments are twist formed by holding one of each pair of straight portions by holding slots that are circumferentially formed in each of a first and second inside rings and first and second outside rings. Next, first and second inside rings and the first and second outside rings are coaxially rotated.

Abstract: The invention relates to the production of a planar commutator with a carbon running surface, wherein an annular closed corrugated conductor blank (1), comprising conductor segments (3) and bridging parts (4) connecting said bridging segments to each other, is produced by rolling from a longitudinal-stepped profiled strip section which is stamped on the edges thereof in order to create contact studs (7) and connection hooks (6). After the band section has been rolled, the contact studs (7) of the conductor segments are bent inwards in the direction of the axis (2) and are profiled on both axial front surfaces by means of a shearing process. The conductor blank is assembled with an annular carbon disk to form a composite part onto which a support element is molded by injection. The annular carbon disk is then subdivided into individual carbon segments and the bridging parts are removed or severed.

Abstract: A method of manufacturing a rotor for a rotating electrical machine includes the steps of: preparing a first and a second pole core, a rotary shaft, and a field coil; press-fitting the rotary shaft into a through-hole of the first pole core so that the axes of the rotary shaft and the through-hole coincide with each other; mounting the field coil on one of the first and second pole cores; opposing the first and second pole cores to each other so that the axes of the through-holes thereof are in alignment with each other and contact surfaces thereof face each other with a maximum parallelism therebetween; press-fitting the second pole core onto the rotary shaft so that the contact surfaces of the first and second pole cores maximally contact with each other and the axis of the rotary shaft coincides with the axes of the through-holes of the pole cores.

Abstract: Method for making a coupling structure (10) comprises the steps of forming a body (12B) of a polymeric material loaded with a conductive filler, providing a coupling area (12C) of a predetermined shape on a portion of the surface of the body (12S), and attaching a conductive pad (IOP) having a shape corresponding to the shape of the coupling area (12C) in non-penetrating contact with the body (12B).

Abstract: A method may first mold a casing and a core of a surface mount inductor, a metal layer is then attached to the lower portion of each of two side panels of the core, conductor contacts are then electroplated onto the side panels of the core, and a wire may then be easily and quickly attached onto or wound around an opened horizontal part of the core with a winding machine for allowing the surface mount inductor to be easily and quickly manufactured. The wire includes a terminal secured to one of the conductor contact before the wire is wound around the horizontal part of the core, and another terminal secured to the other conductor contact after the wire has been wound around the horizontal part of the core.

Abstract: A method for manufacturing a planar sensor, comprises disposing a film of a material on a substrate, wherein the material is selected from the group consisting of platinum, rhodium, palladium and mixtures and alloys comprising at least one of the foregoing materials; annealing the material; measuring a resistance value of the material; laser trimming the annealed material; heat treating the laser trimmed material; and laser trimming the heat treated material to form the sensor.

Abstract: An assembling apparatus is disclosed. The assembling apparatus includes a base, an assembling platform, and a driving part. The assembling platform and the driving part are fixed on the base. The assembling platform defines a receiving space for receiving a semiconductor chip module, a lever chamber for receiving clips of the semiconductor chip module, and a driving groove for connecting the receiving space and the lever chamber. The assembling platform further includes a lever bar removably placed in the lever chamber for expanding the clips. The driving part includes driving shafts. An end of each of the driving shafts is in the driving groove and is movable to pass through the lever chamber and reaches the receiving space. The assembling apparatus is used to assemble a semiconductor chip module conveniently and safely.

Abstract: The apparatus according to the invention concerns a production line (1) for the automated processing of individual photocells (11) for the production of strings (17) where the individual photocells (11) are taken up by means of a suction pad gripper (10) from a supply magazine (3) and moved to a centering unit, subsequently pass through a soldering station (15) where they are connected with crimped, electrically conductive metallic connectors (8) in series to one another, and the completed strings (17) being removed from the production line (1) by a string lifter (16). It is distinguished by the fact that it can process photocells (11) of varying dimensions and thicknesses and that transportation through the production line is accomplished exclusively by means of vacuum.

Abstract: A cutting guide for trimming the center conductor of a stinger. The cutting guide may include a housing that is adapted to receive the stinger conductor and provide a reference plane for trimming the conductor to a desired length. The housing may include a receiving end for receiving a predetermined portion of the stinger and an exit end through which an excess portion of the conductor protrudes beyond the desired cutting plane. The housing may include a socket having a receiving space for receiving the threads of the conductor and a barrel having a bore through which the stinger extends. Alternative embodiments include a length-adjustable housing and a housing with multiple bore lengths.

Abstract: Ultrasonic end stops and methods of making ultrasonic end stops are provided. The present invention relates to plastic reclosable fasteners with sliders for opening and closing the reclosable fasteners on plastic bags and the like and particularly to the use of protruding end stop structures on reclosable fasteners to prevent travel of sliders past the fastener ends. The end stop structures include at least one of high density polyethylene, lo medium density polyethylene, polypropylene, a cyclic olefin copolymer, a high density material, or a high modulus material and may optionally include low density polyethylene or linear low density polyethylene.

Abstract: A method and apparatus for assembling a first thermoformed workpiece, such as a tab closure, to a second thermoformed workpiece, such as a lid.

Abstract: A method of manufacturing a cord management device. The method includes: (a) providing a power strip; (b) physically and electrically coupling a power cord to the power strip; (c) providing a stationary portion, providing the stationary portion includes: (1) providing a first wall; (2) providing two or more slots in the first wall configured to contain a first portion of a single electrical cord; and (3) providing a second wall spaced part from the first wall, the first wall and second wall defining a first space there between; (d) providing a cover; (e) hingedly attaching the cover to the stationary portion, thereby defining a second space; (f) integrating the power strip into the second space; and (g) locating a portion of the power cord in the first space.

Abstract: Miniature circuitry and inductor components in which multiple levels of printed circuitry are formed on each side of a support panel, typically a printed circuit board or rigid flex. Electrical connection between the plural levels of circuitry and multiple windings around magnetic members are provided by plural plated through hole conductors. Small through hole openings accommodate a plurality of the plated through hole conductors since each is insulated from the others by a very thin layer of vacuum deposited organic layer such as parylene having a high dielectric strength. Adhesion of this plated copper to the organic layer is provided by first applying an adhesive promotor to the surface of the organic layer followed by the vacuum deposition of the organic layer.

Abstract: In the assembly of an electronic circuit module having a baseplate (10) and circuit components (16, 19, 21) mounted on said baseplate in an automatic assembly line in which a boat is placed on a conveyor means and is conveyed between various assembly stations in order to place, fix and/or contact the circuit components (16, 19, 21) on the boat, the boat is used as the baseplate (10) of the circuit module. When the circuit module is finished, the boat thus becomes part of a device where the module is built in.

Abstract: A printed circuit board with improved signal integrity for one or more differential signal pairs incorporates one or more conductive regions. In an exemplary embodiment, via structures for the differential pair that interconnect signal traces are isolated from the conductive region by an antipad area around the via structures and a conductive bridge. In alternate embodiment, an antipad area around the via structures includes a bridge between the via structures. The antipad area may comprise, by way of non-limiting example, a clipped circular aperture or a modified rectangular aperture. The bridge may, by non-limiting examples, comprise a portion of the conductive region to permit impedance tailoring of the differential pair with respect to the conductive region.

Abstract: A method is provided for manufacturing a catalytic converter. A metallic tubular member is provided. A section of the metallic tubular member is deformed radially inward to form a neck portion. The neck portion has a diameter less than an initial diameter of the metallic tubular member. The tubular member is separated at substantially an axial midpoint of the neck portion for obtaining a first pre-form member having a first conical-shaped end. At least one catalytic element is inserted in the first pre-form member. An outer surface of the first pre-form member is deformed radially inward for securing the catalytic element within the first pre-form member. The first pre-form member is spin-formed for forming a second conical-shaped end opposite the first conical-shaped end.

Abstract: A method for making a plate type heat pipe includes the steps of: stacking a wick structure on a first plate, the wick structure defining a plurality of capillaries; high frequency welding the wick structure to the first plate; stacking a second plate on the wick structure; and connecting hermetically peripheral edges of the first and second plates together so as to form an enclosed cavity between the first and second plates for enclosing the wick structure.

Abstract: A positioning device for clipping apparatus includes a hollow body which has an open side on one side that holds a track portion and an anchor portion on another side. The body houses a sliding member having a clipping unit and a harness arm. The harness arm is connected to the track portion to form a displacement path of the sliding member. The clipping unit includes an upper clipping portion and a lower clipping portion. The upper clipping portion is driven by the sliding member to move close to the lower clipping portion. A linking means connects an elastic element to the anchor portion and the sliding member so that the elastic element can be stretched and retracted against the displacement path of the sliding member to provide a returning elastic force to the sliding member. Thereby the sliding member can be positioned rapidly on each displacement path.

Abstract: The present invention discloses a one piece food corer with a hook design providing an efficient and elegant tool for coring food. The basic design is without attachments or other accoutrements. The user of the corer is able to use one tool for a specific purpose, hollowing out the flesh from a vegetable or fruit.

Abstract: A foldable knife having a handle and a blade holder movably mounted on the handle for movement from an unfolded position to a folded position. The handle has a space adapted to receive the blade holder when the blade holder is in its folded position. The blade holder has a blade locking mechanism.

Abstract: A handle for a utility knife includes a housing made up of two or more portions. In one embodiment, a manually operable member for use in releasing the blade is retained to at least one portion of the housing and does not become separated from the housing when the housing is in an open state. In another embodiment, a catch for engaging the blade extends from a support member that is slidably movable within the housing. In another embodiment, the housing is formed of metal and a nose portion is formed of a metal that is more wear resistant than the rest of the housing, in order to improve the durability of the nose portion.