Abstract: An exemplary welding consumable according to the invention is provided and includes up to about 0.13 wt % carbon, about 0.3 wt % to about 1.4 wt % manganese, about 7.25 wt % to about 11.5 wt % nickel, about 0.6 wt % to about 1.2 wt % molybdenum, about 0.2 wt % to about 0.7 wt % silicon, up to about 0.3 wt % vanadium, up to about 0.05 wt % titanium, up to about 0.08 wt % zirconium, up to about 2.0 wt % chromium, and a balance of iron and incidental impurities.

Abstract: Flux formulations that remain pliable and tack-free after deposition are disclosed. In certain examples, the flux comprises a first component and an effective amount of a second component to provide a pliable flux after deposition. The flux may also include activators, plasticizers, surface active agents and other components.

Abstract: A water table for cutting metallic materials comprises an upper water pool supported above a false vessel bottom. The surface of the upper pool water volume is regulated relative to workpiece support rails secured above the upper pool surface. An actual vessel bottom is positioned below the false bottom and supports a lower pool volume. Bearing directly upon the lower pool surface is an enclosed air pressure volume regulated by an air supply source. The upper and lower pool volumes are hydraulically linked by flow conduits. A frangible rupture disc in a pressure release vent assures an absolute pressure limit within the air volume to avoid over-pressurization or under-pressurization of the water table.

Abstract: An alignment tool that is used to hold a pipe fitting stationary in the welding process includes a pipe guide, a guide shaft, and an adapter. The adapter can vary according to the fitting that is to be welded. As an example, the adapter can be a flange adapter, a 90-degree adapter or a 45-degree adapter. The guide shaft is slidably engaged to a connecting arm which is perpendicularly and terminally fixed to the pipe guide. Therefore, the distance between the guide shaft and the pipe guide can be varied as preferred. A base section of the adapter is slidably engaged along the guide shaft. Therefore, the position of the fitting which is mounted on the adapter can also be repositioned as preferred. In order to hold the pipe against the pipe guide, a chain is being used.

Abstract: Methods for repairing surface of a metal substrate are provided, which can include preparing the surface of the metal substrate for repair; melt attaching a base layer onto the surface of the metal substrate; fusing a plurality of first layers of a first material via additive manufacturing to the base coating; forming an interlocking transition zone via additive manufacturing from the first material and a second material; and fusing a plurality of second layers of the second material via additive manufacturing on the interlocking transition zone. The interlocking transition zone can have a plurality of projections alternately extending from the plurality of first layers and the plurality of second layers, respectively, to undetachably couple the plurality of first layers to the plurality of second layers. A repaired metal substrate is also provided.

Abstract: A magnetic levitation screw-clamping jaw for automatic screwdrivers. The main feature is a configuration of a magnetic levitation clamping jaw on the front end of the screwdriver bit of an automatic screwdriver. The structure and working principle of the invention include: (1) through pneumatic control, clamp the screw at air intake, and through electromagnetic control, release the screw at air exhaust, meanwhile complete the locking action straightforward with the automatic screwdriver; and with electric power input, the electromagnet can absorb the screw; (2) through the relative displacement with the automatic screwdriver, push the magnet, and as like poles repel, the repulsion force will push the displacement to clamp the screw to immediately conduct the locking action; (3) through the relative displacement with the automatic screwdriver, push the switch to control the magnet excitation of the magnetic chuck to absorb and clamp the screw for the screw-locking action.

Abstract: Provided is a vertical machining center including: a splash cover fixed to a base, the splash cover defining a machining chamber to enclose a machining zone; a column vertically standing on the base; a Z-axis guiding rail disposed on the column and being vertically directed toward the base, the Z-axis guiding rail partially exposed to the machining zone; a Z-axis driving device disposed in the column, the Z-axis driving device partially exposed to the machining zone; a spindle head to be driven vertically by the Z-axis driving device; a spindle head opening formed in the splash cover so that the spindle head can pass through the spindle head opening; and an extendable cover provided between an edge of the spindle head opening and the spindle head and configured to cover parts of the Z-axis guiding rail and the Z-axis driving device, the parts being exposed to the machining zone.

Abstract: A nozzle body wherein replacement with cutting tool is easy and oscillation is small, and machine tool to which nozzle body can be attached, machine tool being equipped with turret having simple construction. Nozzle body includes: a body; a shank that is attached to a main spindle of machine tool: shaft body that is provided in a protruding manner on shank and rotatably supported by the body; annular path that is provided on outer circumference of shaft body; a discharge orifice that is provided at the leading end of shaft body; a first path that is provided inside shaft body and provides communication between discharge orifice and annular path; detent that is provided to the body; and a second path that is provided to the body and opens into the detent, the second path communicating with the annular path.

Abstract: A feeding module includes a slider and a guider. The slider includes two sliding portions, a first connecting portion and four sliding blocks with hydrostatic bearing. Each sliding portion has a first through hole. The first connecting portion is connected to the sliding portions. Two of the sliding blocks are disposed in the first through hole in one of the sliding portions, another two of the sliding blocks are disposed in the first through hole in another one of the sliding portions. Each sliding blocks has a second through hole. The guider includes two cylindrical portions corresponding to the two sliding portions. One of the cylindrical portions penetrates through the second through holes in two of the sliding blocks. Another one of the cylindrical portions penetrates through the second through holes in another two of the sliding blocks.

Abstract: A main spindle failure detection device for a machine tool includes a rotation speed detection unit, a reach time estimation unit, and a determining unit. The reach time estimation unit is configured to estimate a reach time in which the rotation speed of the main spindle reaches a predetermined rotation speed threshold using a non-linear model based on a rotation speed of the main spindle detected at a start of an inertia operation and a rotation speed of the main spindle detected after an elapse of preset measurement time from the start of the inertia operation. The determining unit is configured to compare the reach time estimated by the reach time estimation unit with a preset reach time in which the rotation speed reaches the rotation speed threshold, so as to determine a failure in the main spindle based on a result of the comparison.

Abstract: A space-saving centerless grinding machine having high operability is obtained by devising the configuration of component units around the basic configuration of the machine. A dressing means for performing a dressing process for a grinding wheel and a regulating wheel comprises a single dressing unit. The dressing unit is located at a lower position between the grinding wheel and the regulating wheel, and thus eliminates the need for right and left dresser spaces for grinding wheels that have most seriously affected the breadthwise dimension of a conventional centerless grinding machine, leading to space saving and a considerable reduction in the breadthwise dimension of the centerless grinding machine.

Abstract: Device and method for the finishing machining of an internal face of a workpiece, such as the track of a ball screw, including a workpiece holder and a finishing tool held on a finishing tool holder. A rotary drive is provided, by which the workpiece holder and the finishing tool is rotationally driven relative to one another about a rotational axis. A linear drive is provided, by which the finishing tool held on the finishing tool holder and the workpiece holder is driven in a translatory manner relative to one another along the rotational axis. An oscillating drive is provided, by which the finishing tool held on the finishing tool holder and the workpiece holder is driven in an oscillating manner relative to one another in the direction parallel to the rotational axis and wherein the finishing tool is pivotably held on the finishing tool holder about a pivot axis.

Abstract: A handheld grinder includes an elongated housing, an electric motor, an output shaft, a wall, a planar circuit board, and a motor drive circuit. The elongated housing defines a cavity therein and includes a motor case disposed at a front end and a handle portion to a rear end. The electric motor has a drive shaft that is mounted within the motor case. The output shaft is drivably coupled to the drive shaft of the electric motor. The wall separates the cavity between the motor case and the handle portion of the housing. The planar circuit board disposed in the handle portion of the housing. The motor drive circuit is accommodated entirely within the handle portion of the housing on the planar circuit board.

Abstract: A polisher may include a polishing pad, a motor, a transmission device, and a mode selection device. The transmission device can transmit a rotational drive force of the motor to the polishing pad in a plurality of different modes with respect to a motion of the polishing pad. The mode selection device may be used for selecting a desired motion mode of the output member. Additionally, a motor and handle housing with an accompanying power cord may be constructed to aid in ease of manipulation of the polisher by the user with minimal interference.

Abstract: Disclosed is a polishing apparatus that polishes a substrate by causing the substrate to be in slide contact with a polishing pad. The polishing apparatus includes a pad temperature control mechanism configured to control a surface temperature of the polishing pad, which includes a pad contact member that comes in contact with the surface of the polishing pad and a liquid supply system configured to supply a temperature-controlled liquid to the pad contact member. The pad contact member includes a liquid flow path therein, and the liquid flow path communicates with a liquid inlet and a liquid outlet connected to the liquid supply system. At least one planar baffle is disposed in the liquid flow path, and the baffle has a space therein.

Abstract: A polishing apparatus 100 includes a first electric motor 14 that rotationally drives a polishing table 12, and a second electric motor 22 that rotationally drives a top ring 20 that holds a semiconductor wafer 18. The polishing apparatus 100 includes: a current detection portion 24; an accumulation portion 110 that accumulates, for a prescribed interval, current values of three phases that are detected by the current detection portion 24; a difference portion 112 that determines a difference between a detected current value in an interval that is different to the prescribed interval and the accumulated current value; and an endpoint detection portion 29 that detects a polishing endpoint that indicates the end of polishing of the surface of the semiconductor wafer 18, based on a change in the difference that the difference portion 112 outputs.

Abstract: An object of the present invention is to provide the diamond polishing device having a function capable of performing polishing even a surface of a semi-closed space such as an inner circumferential surface of a cylinder member or a ring member. The polishing device of the present invention includes a polishing member having a long shape, means for delivering and winding the polishing member, a polishing member support that holds the polishing member to be capable of being wound and displaced, a base to which the polishing member support is attached, and pressing means for pressing the base toward a machining surface of a member to be polished. The base includes an extending section that extends in a direction different from the pressing direction. The polishing member support is disposed at a distal end portion of the extending section.

Abstract: Implementations described herein protect a retaining ring for a polishing system from corrosive polishing chemistries. In one embodiment, a retaining ring has a ring-shaped body having a top surface, an inside diameter sidewall, an outer diameter sidewall and a bottom surface. The inside diameter side wall is configured to circumscribe a substrate. The ring shaped body has a rigid ring-shaped portion, a polymeric ring-shaped portion stacked on the rigid ring-shaped portion and covering at least three sides of the rigid ring-shaped portion, a plurality of grooves formed in the bottom surface, and a plurality of wash ports formed through the polymeric ring-shaped portion, wherein the wash ports are isolated from the rigid ring-shaped portion.

Abstract: An external clamp ring for a chemical mechanical polishing (CMP) carrier head having a hydrophobic coating, and a carrier head having the same are described herein. In one embodiment, an external clamp ring is provided that includes a cylindrical body having an outer cylindrical wall and an inner cylindrical wall. A hydrophobic layer disposed is on the outer cylindrical wall.

Abstract: Provided is a substrate holding device used in a substrate polishing apparatus that polishes a substrate using a polishing pad. The substrate holding device includes: a retainer ring configured to hold a peripheral edge of the substrate; and a drive ring fixed to the retainer ring so as to rotate together with the retainer ring. The surface of the retainer ring at the polishing pad side has a convex portion at a position other than an innermost circumference following a shape of the drive ring.

Abstract: A method of manufacturing an actuator assembly component is provided. The method includes tumble polishing the actuator assembly component. The method also includes taking at least one bearing ratio measurement along a portion of a surface of the actuator assembly component. The method further includes comparing the at least one bearing ratio measurement to a minimum bearing ratio value to verify that the actuator assembly component has been tumble polished.

Abstract: A water-abrasive suspension cutting facility with at least one high-pressure source (2) which provides a carrier fluid at a high pressure, with at least one exit nozzle (6), with a high-pressure conduit (4) connecting the high-pressure source (2) to the exit nozzle (6), as well as with an abrasive agent feed lock (16). The abrasive agent feed lock (16) is connected to the high-pressure conduit (4) and includes an entry side shut-off element (26) and an exit-side shut-off element (24). A lock chamber (18) is arranged between the entry side shut-off element (26) and an exit-side shut-off element (24). A suction device (30) is configured for producing a reduced pressure in the lock chamber (18) and is connected to the lock chamber (18).

Abstract: A comminutor reduces the size of particles of frangible blast media from each particle's respective initial size to a size smaller than a desired maximum size. The frangible blast media may be entrained in a flow of transport gas. The comminutor includes an inlet and an outlet, both in fluid communication with an internal flow passageway. The internal flow passageway includes a first intermediate passageway which comprise the gap defined by two rotating rollers and a second intermediate passageway which includes an inlet disposed proximal the gap, extending in an upstream direction therefrom.

Abstract: An abrasive tool for machining surfaces, which comprises a support associated with at least one abrasive layer, and a first layer and a second layer, both of which are made of elastically deformable material and are interposed between said support and said abrasive layer; the second layer has a higher stretch modulus than the first layer and is arranged in an intermediate position between the first layer and the abrasive layer, and the first layer is associated with the support.

Abstract: A chuck is composed of a body (2), gripping jaws (10) provided on the body (2), and feed structures (20) disposed in containing chambers (4) of the body (2), and the feed structure (20) is composed of a cylindrical body (21) having a male screw portion (22) formed thereon, a first receiving body (27) fitted in one end side of the cylindrical body (21), a second receiving body (35) fitted in the other end side of the cylindrical body (21), an eccentric shaft (40) consisting of an base shaft portion (41) and an eccentric portion (42), an external gear (45) having a through hole (46) formed to extend from front to rear through an central portion thereof and having the eccentric portion (42) of the eccentric shaft (40) inserted in the through hole (46), an internal gear (50) having a teeth portion partially meshing with a part of a teeth portion of the external gear (45), a screw body (55) composed of a screw member (56) and a flange member (60), and a coupling body (65) disposed between the first receiving body

Abstract: An elongated, generally, cylindrical impact socket has a driven end and a drive end. The socket is elongated, the cylindrical shape is parsed in at least two, distinct uniform diameter generally coaxial sections having a mass in the range of at least about 2 to 3 times the mass of a standard or extended ASMEB107.110.20R socket.

Abstract: A wrench includes a first part, a second part and a third part. The first part has a first toothed portion and a first pivotal portion. The second part has a third pivotal portion which is connected to the first pivotal portion so that the second part is pivoted an angle relative to the first part about the first pivotal portion. The third part is movably connected to the second part and has a second toothed portion which faces the first toothed portion so that objects of different sizes are clamped between the first and second toothed portions.

Abstract: A ratchet wrench includes a tubular body, a ratchet unit, a driving head, a control unit and a connection unit. The ratchet unit is operated in either rotation mode or spinning mode. The control unit controls the ratchet unit to rotate clockwise or counter clockwise. The connection unit is connected with a tool. When the body is rotated, the ratchet unit drives the driving head to rotate an object connected to the driving head. When the tool is span relative to the body, the ratchet unit also drives the driving head to rotate an object.

Abstract: An adapter comprising an elongated member having an intermediate body region to be received by a tool in locking engagement, a first region extending in a first direction axially from the intermediate body region and having a first keyed free end having a cross-section of a first size, and a second region extending axially from the intermediate body region in a second direction opposite the first direction and having a second keyed free end having a cross section of a second size different from the first size. The adapter can be used to actuate sockets of different size.

Abstract: Methods and apparatus for an enhanced driving bit according to various aspects of the present technology include a bit comprising a plurality of driving surfaces having a limited length and a shoulder portion positioned between the driving surfaces and a mid-body portion of the bit. The length of the driving surfaces is selected to allow complete insertion into a recessed socket area of a fastener such that the entire driving surface is positioned within the recessed socket area. The shoulder surface is configured to distribute localized stresses away from the driving surfaces to the mid-body portion more efficiently to reduce a potential for breakage of the driving surfaces during use.

Abstract: A hand tool assembly includes a cylindrical first body having multiple first grooves. A driving head is connected to one end of the first body and has a ratchet wheel which is controlled by a ratchet mechanism in the driving head. The first body extends through the ratchet wheel. A handle unit is movably mounted to the first body and the handle unit is selectively positioned at one of the first grooves. The second body has two different connection portions on two ends thereof, and the second body can be replaced by other handle tools.

Abstract: An electronic device for checking a fastening state of screws includes a receiving member, a cover, an electric screwdriver, a processor, and a warning unit. The receiving member receives a mountable device. The cover includes a number of screw guiding members, the screw guiding members guides the screws into screw holes on the mountable device. The electric screwdriver fastens the screws into the screw holes on the mountable device. The processor predefines an order of the electric screwdriver fastening the screws in response to operations of an operator; in a process of the electric screwdriver fastening the screws into the screw holes on the mountable device received in the receiving member, checks whether the fastening order is the same as the predefined order; and when the fastening order is not the same as the predefined order, controls the warning unit to output a warning message.

Abstract: A component removal device that is configured to access hard to reach electrical components in a networking system to facilitate fast and easy removal of the electrical component is provided. In embodiments, the component removal device includes a handle, a body portion extending distally from the handle and an end effector that is configured to engage the electrical component to facilitate removal of the electrical component from the networking system. In embodiments, the end effector includes at least one prong that is positioned to engage the electrical component to allow the electrical component to be pulled from a data port of a switch of the networking system. The component removal device may include an illuminating device to improve visualization of the end effector and the electrical component to be removed. In embodiments, the at least one prong includes two spaced prongs which may be formed of a rigid material, or alternatively, of a resilient material.

Abstract: The invention relates to a core disassembling device. The core disassembling device comprises an opening-closing box housing and at least one holding hole deposited at one side of the opening-closing box housing. The opening-closing box housing comprises an upper housing and a bottom housing, and the holding hole comprises a first notch and a second notch. The first notch is deposited at one side of the upper housing and the second notch is deposited at one side of the bottom housing. The second notch is corresponded to the first notch. When the opening-closing box housing is closed, the first notch and the second notch constitute the holding hole for holding and fixing the core of the capacitance pen. Therefore, it is easy and convenient for a user to draw the core out the capacitance pen and to change a new core.

Abstract: A tool for the removal and reinstallation of drain filters is provided. The tool has a crossbar having a first edge and an opposing second edge. From the first edge a stem perpendicularly extends. From the second edge two spaced apart prongs extend, the distal end of each prong having orthogonal projections for hooking to an underside of the drain filter during its removal. During reinstallation, the stem may pass through a portion of the drain filter so that when the stem is faced downwardly, the drain filter slides down the stem to its appropriate position in a drain assembly.

Abstract: A deck clip magazine for use with a pneumatic fastener gun and a plurality of generally T-shaped deck clips attached to one another by webbing to form a clip belt. The deck clip magazine has a housing with a channel shaped to receive the clip belt and a front end with an opening to permit egress of the leading clip from the channel. An aperture on the housing is aligned with the barrel of the pneumatic fastener gun and permits fasteners to pass therethrough to secure the generally T-shaped clips in position. The clips are aligned below the aperture by way of an inwardly biased movable stop located adjacent the opening. A cutting mechanism is aligned with the webbing and selectively actuated to sever the webbing between adjacent clips in the clip belt.

Abstract: The invention relates to a method and a system for controlling injection processes in liquid fuel-operated setting devices which comprise a fuel tank from which fuel is supplied to a combustion chamber by means of a time-controlled metering device. In order to further improve the controlling of injection processes in liquid fuel-operated setting devices, a metering time of the time-controlled device is adapted to the age of the fuel tank.

Abstract: The invention relates to a hand-held or semi-stationary setting device for driving fastening elements into a substrate with the aid of a power piston, said device comprising an attachment device at one discharge end. In order to simplify the operation of a hand-held or semi-stationary setting device, waste gas leaving a combustion chamber is used during a setting operation to pre-stress the attachment device against the substrate.

Abstract: A fuel transmitting device is adapted for use in a gas nail gun which is formed with a combustion chamber and an accommodating chamber, and includes a cylinder cover, a door pivotable between a close position and an open position, and a connector. The cylinder cover is formed with a passage having an inlet that is proximate to the accommodating chamber and an outlet that is proximate to the combustion chamber. The connector has an input opening and an output opening. When the door is at the close position, the connector is received in the accommodating chamber and the output opening communicates with the inlet of the cylinder cover. When the door moves from the close position to the open position, the connector is removed from the accommodating chamber.

Abstract: A hammer drill has a body housing having a motor housing and a gear housing formed in one piece. An electric motor is fixed to the motor housing. A motion converting mechanism, a striking mechanism and a tool holder which form a striking mechanism part are housed in the gear housing so as to be movable with respect to the gear housing. During hammering operation, the striking mechanism part moves with respect to the gear housing under a biasing force of a coil spring, so that vibration caused by the hammering operation is reduced.

Abstract: An improved technique relating to mounting of a battery in an impact tool which has a handle configured to move with respect to a tool body. A hammer drill has a body, a handle part and a battery mounting part. The handle part is configured to slide with respect to the body under a biasing force of a coil spring. The battery mounting part has a plurality of mounting parts. At least one of the mounting parts of the battery mounting part is connected to the handle part and slides together with the handle part with respect to the body during operation.

Abstract: A cushion device is used for a cylinder of a pneumatic tool, and the pneumatic tool contains: a body, a cylinder, a valve unit, a piston member, a cushion washer, and at least one spring. The body includes a grip and a fitting sleeve having a chamber, a closing element, and an opening. The cylinder is fitted in the chamber and includes a room and an abutting portion. The valve unit is mounted between the room and the abutting portion. The piston member is accommodated in the room and slides along a movement axis. The cushion washer and the at least one spring are mounted in the chamber, and the cushion washer abuts against the closing element and the pressing face. The cushion washer includes at least one open segment which has at least one air groove each having a mouth parallel to the movement axis.

Abstract: A system includes a first hand-held power tool, a second hand-held power tool, and a rechargeable battery of a voltage class. The first hand-held power tool includes a first interface for the rechargeable battery, an electronically commutated electric motor of a defined construction size, a first electronic unit configured to supply the electronically commutated electric motor with power, and a first switch element configured to activate the electronically commutated electric motor. The second hand-held power tool includes a second interface for the rechargeable battery, an electronically commutated electric motor of a defined construction size, a second electronic unit configured to supply the electronically commutated electric motor with power, and a second switch element configured to activate the electronically commutated electric motor. The rechargeable battery is configured for contact can be in contact with both the first interface and the second interface.

Abstract: A power tool is provided including a gear case having a spindle, a motor case connected to a rear end of the gear case, a handle portion attached to a rear end of the motor case, and a motor housed inside the motor case. The motor includes a stator, a rotor rotationally arranged inside the stator, and a fan in rotational connection with the rotor. At least one air intake is arranged at least one of the motor case or the handle portion near the rear end of the motor case. A power module including power switches and a heat sink is housed in at least one of the motor case or the handle portion near the rear end of the motor case such that rotation of the fan causes air flow to enter through the air intake and flow near the heat sink and through the motor.

Abstract: A power tool is provided including a tool housing and a brushless DC (BLDC) motor disposed within the tool housing. The motor includes a stator assembly and a rotor assembly having a rotor lamination stack mounted on a rotor shaft to rotate therewith. The power tool also includes a power module for driving the motor, which includes: a printed circuit board, power switches operatively connected to the motor disposed on a first surface of the printed circuit board, positional sensors disposed on a second surface of the printed circuit board around a periphery of a center portion of the printed circuit board, and a heat sink having a substantially planar surface facing the second surface of the printed circuit board and disposed between the motor and the printed circuit board. The heat sink includes a through-hole therein sized to axially expose the positional sensors in the direction of the motor.

Abstract: An electric tool includes a first casing having an upper housing and a second casing having a connection portion fastened with the upper housing and a cone-shaped portion connected to the connection portion in such a manner to define several circumferential recesses on an exterior surface, wherein the cone-shaped portion is truncated and has a diameter that gradually decreases from one end to the other end; a shaft mounted rotatably to a front end of the cone-shaped portion; a light permeable structure including several light permeable elements disposed in the circumferential recesses respectively; and a lighting structure disposed in the connection portion and having several light emitting sources, which are corresponding to and are capable of emitting light rays through the light permeable elements respectively.

Abstract: A toothbrush includes a head with an extendable handle. The toothbrush has a brush head with bristles extending from one side, and an opening containing one or more segments nested within one another. The inner-most segment is pulled outward, away from the brush head, with the adjacent outer segments following forming a handle assembly. A resilient member within the brush head between the head and inner-most segment assists in extension of the handle assembly. Upon extension the segments form an interference fit with each adjacent interior and exterior segment forming a rigid handle assembly. When the handle assembly is in an extended configuration a retention member extends from the interior of the segment surrounding the extended segment for engaging the end of the segment thereby preventing the handle assembly from collapsing. A rotatable collar at the end of the inner-most segment includes filament for flossing teeth.

Abstract: Rotatable handles and related methods are disclosed herein. In one form, the handle has a first clamp member, a second clamp member connected to the first clamp member on one end and mating with the first clamp member at another end, and an actuator operable to drive the mated ends of the first clamp member and second clamp member together to create a clamping force between the first clamp member and the second clamp member and secure the rotatable handle into a fixed position with respect to an object to which the rotatable handle is connected. Various methods are also disclosed herein with respect to the rotatable handle.

Abstract: A file handle has a body, a ferrule, a clamping assembly, and a cap. The body has a first end and a second end opposite to the first end. The ferrule is assembled at the first assembling end of the body. The clamping assembly is movably mounted in the body and has two clamping portions and a threaded hole. The two clamping portions extend through the ferrule. The two clamping portions are subjected to an elastic force and oppositely separated from each other. The threaded hole is adjacent to the second assembling end of the body. The cap is rotatably assembled at the second assembling end of the body and has a screwing stick screwed in the threaded hole. Because the space between the two clamping portions can be adjusted by turning the cap, a user can clamp a tang of a file blade by the file handle.

Abstract: A sawhorse includes a body portion comprising an elongated portion, a first housing and a second housing. The first and second housings are connected to the elongated portion, with the second housing spaced from the first housing. First and second pairs of folding legs are pivotally attached to the first and second housing respectively, pivotable between open and folded positions. The first housing comprises a receiving region for receiving a distal end of the second pair of legs when in the folded position, the first receiving region comprising a first latch arranged to engage the second pair of legs, and the second housing comprises a second receiving region for receiving a distal end of the first pair of legs when in the folded position, the second receiving region comprising a second latch arranged to engage the first pair of legs.