Abstract: A jig for fixing a workpiece used in a wire electric discharge machine that machines the workpiece by moving a wire electrode and the workpiece relative to each other, has a table fixing portion for fixing the jig on a table of the wire electric discharge machine and a workpiece fixing portion which is provided with an opening through which the wire electrode extends, and onto which the workpiece disposed on the opening so as to cover the opening is fastened with a fastening member in the opening direction of the opening.

Abstract: Provided is a wire electric discharge machine in which workpiece attaching and detaching unit attaches and detaches a workpiece to and from workpiece fixing unit, machining-reference-part detecting unit detects the position of a machining reference part of the workpiece, workpiece-positioning executing unit positions the workpiece in a position where the workpiece does not collide with machining-reference-part measuring unit, measurement-positioning executing unit positions the machining-reference-part measuring unit in a predetermined measurement start position, the machining-reference-part measuring unit measures the position of the machining reference part of the workpiece, and machining-reference-part-measurement executing unit executes a position measuring operation for the machining reference part of the workpiece using the machining-reference-part measuring unit.

Abstract: The invention relates to a device (10) for the separate application of solder material deposits (11), in particular solder balls, comprising a conveying device (19) for separately conveying the solder material deposits from a solder material reservoir (12) toward an application device (33), the conveying device having transport holders that are formed as passage holes and that can each be moved from a receiving position, in which a solder material deposit is received from the solder material reservoir, into a transfer position P2, in which the solder material deposit is exposed to a pressure gas and from which the solder material deposit is transferred to an application opening (37) of an application nozzle (36) of the application device into an application position P3, wherein a first detector device (69) for triggering a treatment of the solder material deposit arranged in the application position P3 with laser radiation emitted by a laser device and a second detector device (80) for locating the solder mat

Abstract: A flux recovery device that recovers a flux component from a gaseous mixture. The flux recovery device includes a first water spray unit that sprays water into a gaseous mixture containing the flux component, a separation unit that includes an introduction port for introducing the gaseous mixture into which water is sprayed from the first water spray unit, and a second water spray unit that forms a precipitation flow inside of the separation unit. The separation unit uses a swirling flow to separate the flux component from the gaseous mixture. A condensation unit cools water vapor generated in the separation unit to change the water vapor to water droplets, thereby removing the water vapor. Water vapor generated in a separation unit is cooled by a condensation unit, recovered as water droplets, and reused.

Abstract: There is described a method and associated apparatus for connecting a structure to equipment underwater, in particular for connecting a flange to a pipe under water. In particular embodiments, the pipe is provided under water, and a weld means is provided in a welding space provided through a section of the pipe, and used to weld the flange to the end of the pipe, for example by internal metal inert gas welding.

Abstract: A collision sensing system includes an outer housing with a ball roller mounted thereto, a piston, a lower housing, and an electro/mechanical switch assembly having a contact ring. The piston includes a helical groove on its exterior and a tongue extending from a lower end thereof. The ball roller is positioned within the helical groove of the piston. The lower housing has a semi-spherical portion and a groove aligned with the piston tongue. A contact pin assembly extends through the piston and includes a contact pin positioned to contact the contact ring. The collision sensing system is configured such that deflection of a welding torch mounted to the lower housing misaligns the tongue and groove, slides the helical groove along the ball roller, thereby lifting the piston and breaking contact between the contact pin and contact ring.

Abstract: A wire lock for use with a rotary welding torch includes a piston and a lock receiver. The piston includes a head, a stem, and an air channel. The piston head defines an internal cavity in communication with the air channel. The generally cylindrical lock receiver includes a flat face, a central conduit, and a slot in communication with the central conduit. The piston and lock receiver are positioned such that the piston stem is received within the slot, respectively. The piston is reciprocally movable between an unlocked and a locked position, and the piston stem and lock receiver are configured to clamp an electrode wire therebetween when the piston is in the locked position. The wire lock may be co-axial or perpendicular to the axis of the rotary welding torch, and may be integral to the welding torch or a swan neck of the welding torch.

Abstract: The present disclosure concerns devices and methods for resistance welding sandwich sheets to other components. Many sandwich sheets include a thermoplastic material layer disposed between two metallic cover layers. The sandwich sheet and the other component may be secured relative to one another by a clamping arrangement. A region of the sandwich sheet to be welded may be heated by a preheating current to soften and displace the thermoplastic material layer when the cover layers are pressed together. With respect to the preheating current, a first electrode arrangement may at least temporarily contact an electrically conductive contacting region of the clamping arrangement such that the preheating current can flow via the clamping arrangement. The cover layers may be welded to the other component with a welding current via the first welding electrode of the first electrode arrangement and a second welding electrode of a second electrode arrangement.

Abstract: The present disclosure provides a blank forming device which includes: first and second blanks to be loaded at one side in a width direction and unloaded at the other side in the width direction; an upper electrode and a lower electrode to contact upper portions and lower portions of one side of the loaded first and second blanks; an upper moving electrode and a lower moving electrode to contact upper portions and lower portions of the other side of the first and second blanks and movably disposed in a length direction of the first and second blanks; and a sagging preventing part being disposed at the lower portions of the first and second blanks between the upper electrode and the upper moving electrode and between the lower electrode and the lower moving electrode to let the first and second blanks support sagged portions upward.

Abstract: A resistive welding electrode includes at least a weld face constructed of a refractory-based material that exhibits an electrical conductivity that is less than or equal to 65% of the electrical conductivity of commercially pure annealed copper as defined by the International Annealed Copper Standard (IACS). A method of using the resistive welding electrode to resistance spot weld a workpiece stack-up that includes an aluminum alloy workpiece and steel workpiece that overlap and contact each other at a faying interface is also disclosed.

Abstract: A rotary cutter includes a pair of recessed receivers which receive the respective tip ends of a pair of electrode tips, and a through portion which runs through in a rotation axis direction and provides an opening that communicates with each of the recessed receivers. A cover case covers the lower recessed receiver of the rotary cutter and has a notch which is associated with the lower recessed receiver. Over the upper recessed receiver of the rotary cutter, a cover plate is fixed to cover the upper recessed receiver. An electrode tip insertion hole is cut through a center portion of the cover plate.

Abstract: Provided is a method for fabricating a component having a high temperature resistant surface. The method includes the steps of providing a metallic powder to a base material, heating the metallic powder to a temperature sufficient to join at least a portion of the metallic powder to form an initial layer, sequentially forming additional layers over the initial layer by heating a distributed layer of the metallic powder to a temperature sufficient to join at least a portion of the distributed layer of the metallic powder and join the formed additional layers to underlying layers, repeating the steps of sequentially forming the additional layers over a previously formed layer to form a formed portion of the component, and optionally removing the formed portion of the component and a portion of the base material. Also provided is a component having a high temperature resistant surface.

Abstract: A method is provided for production of at least one three-dimensional article by successively providing powder layers and fusing together of selected areas of the layers, which areas correspond to partial cross sections of the three-dimensional body. The method involves: applying a first powder layer on a work table, fusing the first powder layer in the selected areas, the selected areas being a full contour of the three dimensional article and a first portion of an inner area of the three-dimensional article, and fusing a second portion of the inner area of the three-dimensional article in the first powder layer completely when the first powder layer is covered with at least one second layer, the second portion being distinct relative to the first portion.

Abstract: In the present invention, At least one row of lens arrays, in which a plurality of lenses are arranged in a direction intersecting with the conveying direction of a substrate to correspond to the plurality of TFT forming areas set in a matrix on the substrate, is shifted in the direction intersecting with the conveying direction of the substrate, to thereby align the lenses in the lens array with the TFT forming areas on the substrate based on the alignment reference position. The laser beams are irradiated onto the lens array when the substrate moves and the TFT forming areas reach the underneath of the corresponding lenses of the lens array, and the laser beams are focused by the plurality of lenses to anneal the amorphous silicon film in each TFT forming area.

Abstract: There is described herein a method and system for drilling holes in components having multiple layers of materials using a laser emitting device, by controlling the laser pulses in such a way that cracks at the interfaces between the various materials are minimized or eliminated.

Abstract: A laser machining method includes forming a through-hole in a workpiece by emitting a laser light; generating image data by taking an image, with a camera, of the workpiece in which the through-hole is formed; and adjusting a hole diameter of the through-hole by enlarging the hole diameter of the through-hole based on the generated image data.

Abstract: A test piece preparation step of preparing a test piece (50) including a welding structure in which a welding material formed of an austenitic alloy is welded to a member formed of low-alloy steel or low-carbon steel, a hydrogen supply step of supplying hydrogen to the test piece (50), and a characteristic stress acquisition step of applying a load (F) to the test piece (50) to which hydrogen was supplied and acquiring a characteristic stress showing material mechanical properties of the test piece (50) are executed.

Abstract: A method of braze repair of a base alloy component that includes a braze thermal cycle including a specially chosen peak braze temperature holding time segment and a purposely selected subsequent diffusion heat treatment segment. A multi-layer braze filler material structure used for the braze repair of a base alloy component including at least a first superalloy layer and a single mixture layer. The single mixture layer including at least a braze alloy and a second superalloy.

Abstract: A lead-free solder alloy includes: 1 wt % to 4 wt % of Ag; 0.5 wt % to 1 wt % of Cu; 1 wt % to 5 wt % of Sb; 0.05 wt % to 0.25 wt % of at least one of Ni and Co; and Sn.

Abstract: Provided is a flux-cored arc welding material having remarkable impact resistance and abrasion resistance. The flux-cored arc welding material having remarkable impact resistance and abrasion resistance comprises: 0.1-0.75 wt % of C; 0.2-1.2 wt % of Si; 15-27 wt % of Mn; 2-7 wt % of Cr; 0.01 wt % or less of S; 0.018 wt % or less of P; 4.3-15 wt % of TiO2; 0.01-9 wt % of at least one selected from the group consisting of SiO2, ZrO2 and Al2O3; and the balance of Fe and other inevitable impurities. Further provided are a welding joint capable of all-position welding and having remarkable weldability, low temperature impact toughness and abrasion resistance, and thus a welding material very preferably applied to the manufacture of pipes used in the oil sand industry field and the like.

Abstract: A soldering apparatus includes a reflow oven, a transmission mechanism, and a controlling unit. The reflow oven includes an inlet and an output mechanism. The output mechanism includes two guide rails and two link belts. An end of a first guide rail has a first alignment structure. The two link belts are movably disposed on the guide rails for outputting a printed wiring board. A distance between the guide rails is previously adjusted to be equal to a width of the printed wiring board. The transmission mechanism includes two tracks and two conveyor belts. An end of a first track has a second alignment structure. The two conveyor belts are movably disposed on the two tracks for transporting the printed wiring board. The controlling unit controls a movement of the first track, so that the first alignment structure and the second alignment structure are automatically aligned with each other.

Abstract: A method for repairing a ceramic matrix composite (CMC) article including a ceramic material in a matrix including a metal alloy, wherein a localized region of the metal alloy has a defect. The method includes applying heat to the localized region for a time sufficient to increase the temperature of the metal alloy in the localized region above the melt temperature thereof and cause the metal alloy in the localized region to flow and seal the crack.

Abstract: An installation equipment includes a holder and an installing board. The holder includes a connecting board, a first installing wall perpendicular to the connecting board, two second installing walls perpendicular to the connecting board and located on two sides of the first installing wall respectively, at least one lock disposed on the first installing wall, at least one locating column perpendicularly extending from the connecting board, and at least two protrusions disposed on the two second installing wall respectively. The installing board is disposed in the holder and includes at least one locating hole, the installing board being clamped among the lock and the two protrusions and the connecting board. The installing board is fixed into the holder so that the installed device connected to the installing board can be fixed onto the holder. The invention further includes an assembling and disassembling method of the installation equipment.

Abstract: There is provided a method of charging a hollow valve with metallic sodium easily and swiftly without being oxidized over the surface of the metallic sodium and an apparatus therefor. The metallic sodium is fed into a cavity of the hollow valve in which a valve stem has a smaller diameter. A workpiece, a semi-finished product for a hollow poppet valve, is disposed at a working position where an opening is directed upward. A cavity of the workpiece is open at a free end of the valve stem. A nozzle is inserted into the opening. An inert gas is jetted from the nozzle and is fed into the cavity. Then, the nozzle is moved up, and a holder that holds the rod-like metallic sodium 10 is disposed between the workpiece and the nozzle. While the inert gas is jetted from the nozzle, the metallic sodium is pressed into the cavity of the workpiece.

Abstract: A process for producing a tool having a main body which extends in a longitudinal direction and at least one blade for machining a workpiece includes providing a base coating on the tool; grinding the at least one blade in a manner that removes the base coating in the region of the at least one blade; and providing a second, fine coating, to the at least one ground blade.

Abstract: A system for inserting a component, such as a bushing, into a receiving structure, such as a mold, is disclosed. The system includes a component station and a component transporter. The component station includes a component support to and a first component ejector to move the component off of the component support. The component transporter includes a multi-axis mover, a component receiver with a retainer that retains the component within the component receiver, and a component ejector to move the component out of the component receiver. The component receiver is disposed on the multi-axis mover. The component transporter moves the component receiver between a first position at the component station, where the component receiver receives the component, and a second position at a processing station, where the component receiver ejects the component. A method is also disclosed.

Abstract: A method of manufacturing a low density accelerometer comprises the steps of: providing a rigid hollow housing having an upper member and a lower member and forming a groove circumferentially along an inner surface of the rigid hollow housing about a location where the upper member is configured to meet the lower member; providing a sensor assembly including a sensing element affixed to a solid proof mass; disposing the sensor assembly in the lower member of the rigid hollow housing, such that an outer edge of the sensing element engages and is in physical contact with the groove defined in the inner surface of the rigid hollow housing; and placing the upper member of the rigid hollow housing over the lower member of the rigid hollow housing, to enclose the sensor assembly within the rigid hollow housing, wherein the sensor assembly is in physical contact with the rigid hollow housing at the groove.

Abstract: A machine tool comprising: a first body; a first leg, a second leg, and a third leg coupled to the first body via first joints and configured to support at least the first body; a second body including a tool holder; a fourth leg, a fifth leg, and a sixth leg coupled to the second body via second joints and configured to support at least the second body; and a first actuator coupled to the first body and to the second body, the first actuator being configured to cause rotational motion between the first body and the second body to enable a change in walking direction of the machine tool and/or to enable a change in machining stiffness and a change in work volume of the machine tool.

Abstract: A machining head 12 for a machine tool 18 comprises: a first body 14 adapted to be connected to a sleeve 16 of a machine tool 18, so as to be rotatable with respect thereto about a first axis of rotation C; a second body 20 connected to the first body 14 so as to be rotatable with respect thereto about a second axis of rotation A; a mandrel 42 adapted to mount a tool and adapted to be fixed to the second body 20 by means of fixing means 44 provided on the second body 20 and on the mandrel 42. The mandrel 42 defines a mandrel axis of rotation M for the tool. The machining head 12 further comprises a motor 48 with an output shaft 50 for rotation of the tool-carrying shaft about the mandrel axis of rotation M. the machining head is characterized in that the axis of rotation of the output shaft 50 of the motor 48 coincides with the second axis of rotation A of the second body 20.

Abstract: A device for protecting an operator from being injured by a machine tool includes at least one sensor unit, which is arranged on a garment unit, and is configured to detect at least one personalized characteristic variable. The device further includes at least one analyzing unit configured to analyze the at least one detected personalized characteristic variable.

Abstract: A method of inspecting a cutting blade having a cutting edge formed of abrasive grains of selected abrasive grain diameters which are bound by a bonding material, includes a cutting step of moving the chuck table and the cutting blade, which is being rotated at a high speed, relatively to each other along a direction perpendicular to an axis of rotation of a spindle, thereby forming a cut groove in the workpiece, and an inspecting step of capturing an image of the cut groove formed in the workpiece by image capturing means, and inspecting the state of the cut groove. The inspecting step examines whether or not the selected abrasive grain diameters are proper on the basis of any of the elements representing the size of an average chip, the number of chips, and the area of chips on both sides of the cut groove per unit length.

Abstract: Woodworking machines including a blade to cut a workpiece and a detector to detect movement or position of at least part of a human body near the blade and a reaction system adapted to mitigate possible injury upon detection of a dangerous condition between the human and the blade.

Abstract: An apparatus for reconditioning wheels, the apparatus including: a trolley mounted base; and a reconditioning assembly rotatably mounted to the base, the reconditioning assembly including at least one reconditioning element.

Abstract: A polishing apparatus includes a platen having a first surface to support a polishing pad and a second surface, a carrier head to hold a substrate against the polishing pad, a plurality of through-holes defined in the platen, and a pad pressure control assembly adjacent on a side of the platen opposite the carrier head.

Abstract: The polishing pad is suitable for polishing or planarizing at least one of semiconductor, optical and magnetic substrates. The polishing pad has a polishing surface, an opening through the polishing pad and a transparent window within the opening in the polishing pad. The transparent window has a concave surface with a depth that increases with use of the polishing pad. A signal region slopes downward into the central region for facilitating debris removal and a debris drainage groove extending through the central region into the polishing pad. Rotating the polishing pad with polishing fluid in the debris drainage groove sends debris from the central region into the polishing pad through the debris drainage groove.

Abstract: Superabrasive tools and their methods of manufacture are disclosed. In one aspect, a method of improving retention of superabrasive particles held in a solidified organic material layer of an abrading tool, a portion of each of said superabrasive particles protruding out of the solidified organic material layer is provided. The method may include securing a plurality of superabrasive particles in the solidified organic material layer in an arrangement that minimizes mechanical stress impinging on the protruding portion of any individual superabrasive particle when used to abrade a work piece. As an example, the arrangement of the plurality of superabrasive particles may be configured to uniformly distribute frictional forces across substantially each superabrasive particle.

Abstract: Example implementations relate to a hand sander vacuum adapter. The hand sander vacuum adapter can include an adapter base and a vacuum collar. The adapter base can include a base plate configured to releasable engage a number of hand sander bases and a shaft extending from the baseplate. The vacuum collar can be rotatable three hundred and sixty degrees about an axis running through the shaft. The vacuum collar can include a chamber through which the shaft is positioned and a vacuum attachment member extending from the chamber. The vacuum collar can provide vacuum communication between a first end of the vacuum attachment member and a number of channels in the base plate and the base plate can be fixed with respect to the handle during operation.

Abstract: A machining arrangement for drilling a hole into a front wall section of a workpiece by way of a machining jet, the front wall section being located in front of a rear wall section of the workpiece, as seen looking in a drilling direction, the rear wall section being disposed with an intermediate space at a distance from the front wall section, the machining arrangement being switchable between a continuous mode, in which the machining jet formed from liquid and abrasive material continuously impinges on the workpiece, and a pulsed mode, in which the machining jet is pulsed, so that the impingement of at least on of said liquid and said abrasive material on the workpiece is recurrently interrupted, the machining arrangement including a controller which is programmed and configured so that the hole is drilled at least partially in the pulsed mode.

Abstract: A method of forming polycrystalline diamond includes providing an alloy over diamond particles and subjecting the diamond particles to a pressure of at least 4.5 GPa and a temperature of at least 1,000° C. to form inter-granular bonds. The alloy includes iridium and at least one of copper, silver, and gold. A polycrystalline diamond compact includes diamond grains bonded by inter-granular bonds and an alloy disposed within interstitial spaces. The alloy includes iridium, carbon, and at least one of copper, silver, and gold. An earth-boring tool includes a bit body and a polycrystalline diamond compact secured to the bit body. Some methods include selecting an alloy that is catalytic to formation of diamond-to-diamond bonds when the alloy is in a liquid phase, but non-catalytic to the back-conversion of diamond to graphite at temperatures of less than about 1,000° C.

Abstract: Structured abrasive articles include a backing and shaped abrasive composites secured to the backing. The shaped abrasive composites include abrasive grits dispersed in a binder matrix. The shaped abrasive composites include a bottom surface and a top surface opposite and not contacting the bottom surface, and at least three sidewalls abutting both the bottom and top surfaces and two other sidewalls. In one embodiment, at least two cusps are formed by the top surface and individual sidewalls. In another embodiment, the top surface includes at least two triangular facets that contact at least two respective sidewalls and at least two cusps. The top surface includes at least one interior recessed portion nearer the cusps than the bottom surface. Methods of abrading a workpiece using the structured abrasive article are also disclosed.

Abstract: The invention relates to a vulcanized fiber grinding tool (1) comprising two vulcanized fiber grinding disks (2, 3) which are adhered to each other over the entire surface by means of an adhesive layer (4) arranged between the vulcanized fiber grinding disks (2, 3) such that the vulcanized fiber grinding disk (2, 3) outer faces provided with the grinding means point away from each other and the use of a support plate is not necessary.

Abstract: A clamp as shown in FIG. 1 has a bar 1 with a plurality of locking slots 5. It has an upper jaw 2 and an adjustable jaw 3. The adjustable jaw 3 is able to slide along the bar 1. The adjustable jaw 3 has a channel which receives the bar. The channel 10 has a substantially angled side part 11 and a substantially straight side part 12, these being sufficient to enable the adjustable jaw 3 to tilt into locking engagement with the slot. There is also a screw tensioner 4 which can be adjusted to apply pressure between the jaws 2 and 3.

Abstract: A step drive mechanism to be attached into a hollow body of a tool makes it possible to produce a thrust movement that can be easily carried out. The mechanism includes a rack that has first and second cogs, each having back-slanted teeth and arranged on an upper and a lower edge, respectively, a front end, a pivotable lever that comprises a hollow top end receiving a torsion spring, bearing against the hollow top end of the lever and against a thrust pawl pivoting in the hollow body in front of the hollow top end of the lever. A crosspiece is inserted between the teeth of the first cog. A pivotable locking pawl is provided with a crosspiece inserted between the teeth of the second cog. A compression spring is arranged to bear against the locking pawl and against an abutment located at a rear end of the rack.

Abstract: A dual ended tweezer a first lateral arm and a second lateral arm connected by a connecting arm. The connecting arm acts as a transversal between the first lateral arm and the second lateral arm, which are parallel, thus forming a “Z” shape. A first pinching tip pair is connected at a first end and a second pinching tip pair is connected at a second end to the lateral arms. The first and second pinching tip pair may be embodied as any of a variety of tweezer tip types, providing a number of different combinations of dual tweezer functionality.

Abstract: A ratchet assembly has a case, a ratchet unit, and a sleeve fixing module. The ratchet unit is mounted in the case and has a toothed surface. The sleeve fixing module is inserted in the case, engaged with the ratchet unit, and has a positioning unit, a rotating unit, a direction-reversal supporting unit, and a pawl block. The positioning unit is mounted in the case. The rotating unit is rotatably mounted in the positioning unit and has a rotating pole and a pole hole formed in the rotating pole. The direction-reversal supporting unit is mounted in the pole hole and has a socket mounted in the pole hole, a spring mounted in the socket and abutting the rotating pole, a ball rotatably mounted in the ball recess, and a pawl block pivotally mounted around the positioning unit, engaged with the ball, and engaged with the toothed surface.

Abstract: A method for manufacturing a driver bit with a flat head includes a step of preparing semi-finished product: the semi-finished product being a bar with equal distance between any two adjacent sides, the semi-finished product having an operation end and a connection end and a transition section connected between the operation end and the connection end, the distance between two opposite sides of the transition section being Z1, the distance between two opposite sides of the connection end being Y1, wherein Z1<Y1; a step of flatting: pressing the first and second sides of the connection end to form a first flattened side and a second flattened side, the connection end being flattened to have a height of, wherein Y1?2X, and Z1?X, and a step of forming a hole: a hole defined through the first and second flattened sides.

Abstract: A screwdriver bit positioning structure includes a connecting rod having a screwdriver bit. A front end of the screwdriver bit is provided with a positioning sleeve. The screwdriver bit is provided with a limit ring and a slide section. The positioning sleeve is a hollow sleeve. One end of the positioning sleeve is provided with a hook portion. Another end of the positioning sleeve is provided with a magnetic member having a through hole. The screwdriver bit is inserted through the positioning sleeve. The hook portion is adapted to engage with the limit ring and slidable on the slide section. The screwdriver bit is exposed out of the positioning sleeve. The positioning sleeve is movable to adjust its position for attracting different sizes of screws and controlling the depth of screwing the screws. The present invention decreases the number of parts, can be assembled easily, and reduces the cost.

Abstract: A tightening tool such as a torque wrench is provided in which electric power can be fed to an electronic circuit with eliminating the need for a battery and achieving daily maintenance-free. In the tightening tool, when a tightening torque has reached a set torque value and a torque limiter is actuated, an electronic circuit unit that has obtained a detection signal outputted from a torque limiter actuation detection unit outputs a tightening completion signal. The tightening tool has a power generation unit for feeding electric power to the electronic circuit unit at least during the actuation of the torque limiter. The power generation unit performs photovoltaic power generation, electromagnetic induction power generation, power generation by conversion from mechanical energy into electrical energy, or temperature difference power generation.

Abstract: A coupling bolt hole alignment tool, a method to align two coupling holes, one in each of two coupling halves, and a system to align two coupling holes are provided. The coupling bolt hole alignment tool and system includes an expandable sleeve assembly configured to be inserted into the second coupling hole and secured into the second coupling hole with a wedge nut. A rotatable rod including an eccentric hole formed in one end of the rod is contained within the expandable sleeve assembly. A pin/paw assembly includes a pin and paw. The pin is inserted into the eccentric hole from the first coupling hole and the paw is disposed within the first coupling hole and includes a portion oriented against a wall of the first coupling hole. Rotation of the rotatable rod while the pin/paw assembly is held stationary by a restraining device aligns the two coupling holes.

Abstract: A device and method of extracting a broken extractor are provided. The fastener extractor includes a shaft with a pre-formed center hole situated longitudinally and interiorly in the fastener extractor. An extractor removal tool is provided that is preformed to engage the pre-formed center hole in the extractor for removing a broken extractor and debri.