Abstract: Welding helmets, systems, and kits providing real-time fume exposure monitoring and warning capability during an arc welding process. A welding helmet configured to protect the head of a user during a welding process is configured with an intelligent warning apparatus and an air-sampling pick-up and output port. The air-sampling pickup and output port connects to a proximal end of an air sampling tube for sampling breathable air within the welding helmet, and a distal end of the air-sampling tube connects to an air-sampling in-take port of an external aerosol monitoring device. The intelligent warning apparatus communicates with the aerosol monitoring device to receive air sample output data from the aerosol monitoring device, and to process the air sample output data to generate warning data and/or warning signals based on preset exposure level set points and/or exposure warning operating modes.

Abstract: The method of friction stir spot welding uses a database of stored optimization parameters to maximize welding strength for an input type of material and an input geometrical parameter of the material, such as its thickness. Experiments are performed for a variety of different materials having different thicknesses. Each experiment performed for each material and each thickness associated with the material measures the welding strength of a friction stir spot welding process for varying values of an initial dynamic welding parameter, a final dynamic welding parameter and a type of varying function. The values of the initial dynamic welding parameter, final dynamic welding parameter and type of varying function that maximize the measured welding strength for the selected material and its selected thickness are stored in a lookup table. A rotating tool may then be controlled using these optimized values in order to maximize welding strength.

Abstract: Described are tools useful to produce a friction stir weld, methods of forming a friction stir weld, and assemblies such as electronic devices that include a friction stir weld.

Abstract: The present invention relates to devices with which, for example, narrow surfaces of preferably plate-like workpieces can be provided with a coating material. The device includes a laser for outputting a laser beam to a laser beam emitter, wherein the laser beam is directed onto the coating material or onto the workpiece in such a manner that the laser beam forms a plane of reference with solder on the surface of the coating material or the workpiece.

Abstract: Provided are a processing device and a processing method with which the device can be made more compact, and with which highly precise processing can be performed. The processing device, which processes a member to be processed by irradiating the member to be processed with a laser, has: a laser oscillator having a plurality of vertical cavity surface-emitting laser diode chips that output laser light having a wavelength of 1,070 nm or less, and a substrate on the surface of which the plurality of vertical cavity surface-emitting laser diode chips are arranged in a matrix; a guidance optical system that guides the laser light output from the laser oscillator; and a control device that controls the output of the laser oscillator.

Abstract: A chamfering apparatus includes: a laser beam transmissive member allowing a laser beam to be transmitted therethrough and contacting one surface of a workpiece, the laser beam transmissive member including an inclined surface that is inclined in an opposite direction to a chamfering direction relative to the one surface in a state where the laser beam transmissive member is in contact with the one surface; and a laser machining head configured to emit an ultrashort pulse laser beam for forming a laser filament inside an edge portion to the inclined surface of the laser beam transmissive member. The ultrashort pulse laser beam is transmitted through the laser beam transmissive member, incident on the one surface of the workpiece from the laser beam transmissive member, transmitted through the edge portion in the chamfering direction, and forms a laser filament inside the edge portion, the laser filament extending in the chamfering direction.

Abstract: A wafer cutting apparatus includes a stage to support a wafer, a cutter, and a sensor. The cutter irradiates the wafer with a beam in a first direction to cut the wafer. The sensor is spaced apart from the cutter in a second direction different from the first direction, and measures a spaced distance between the wafer and the cutter. The sensor measures the spaced distance between the wafer and the cutter along a second cutting line parallel to a first cutting line while the cutter cuts the wafer along the first cutting line on the wafer.

Abstract: A laser welding method using a laser welding jig having a plurality of pressing parts, includes a step of placing a second member on a first member; a step of pressing the second member with the plurality of pressing parts in a direction toward the first member to thereby form a gap between the first member and the second member at most 300 ?m; and a first welding step of laser-welding the first member and the second member by irradiating on a surface of the second member at a location between the pressing parts with laser light while conducting the step of pressing.

Abstract: A test method is provided to reproducibly test under matched HY100 welds to robustly establish the production parameters for the welding process. The test method comprises forming a ‘U’ shaped groove in a plate to which steel members are welded on the reverse side. The steel members comprise transverse members that extend across the weld. The transverse members are arranged at a density of at least four members for each 0.5 m length of weld and preferably five transverse members. The steel members further comprise longitudinal stiffeners that extend parallel to the weld. The longitudinal stiffeners are arranged at a density of two stiffeners per 0.4 m width of the plate. The high density of stiffeners has provided a reproducible and reliable weld test method that is capable of being used to establish and approve production parameters for the welding process of under matched HY100 welds.

Abstract: A solder alloy includes Sn, optional Ag, Cu, and Al wherein the alloy composition is controlled to provide a strong, impact-and thermal aging-resistant solder joint that has beneficial microstructural features and is substantially devoid of Ag3Sn blades.

Abstract: A method for the production of workpieces includes positioning and holding a first plate-shaped material with a gripping device in a working region of a processing station so that the first plate-shaped material is moveable relative to a workpiece support, positioning and holding a second plate-shaped material with an additional gripping device in the working region of the processing station so that the second plate-shaped material is moveable relative to the workpiece support, producing a first workpiece part from the first plate-shaped material, positioning the first workpiece part with respect to the second plate-shaped material, connecting the first workpiece part to the second plate-shaped material or to a second workpiece part produced from the second plate-shaped material, wherein the second workpiece part is at least partially processed, and finishing the at least the second workpiece part that is connected to the first workpiece part in the processing station.

Abstract: Disclosed is a method for producing a cylindrical membrane wall including a plurality of tubes having a coolant passing through an inner part thereof. The method includes producing a plurality of sub-bundles by welding a plurality of tubes to each other after longitudinally arranging the tubes to be adjacent to each other in parallel, producing a plurality of panel-type bundles by welding the sub-bundles to each other, forming a plurality of curved bundles having a curved surface of a predetermined curvature by pressing the panel-type bundles, and welding the curved bundles to each other using a jig.

Abstract: An assembling device including: a bearing setting unit configured to set a bearing unit such that the bearing unit is coaxial with respect to a hub cylindrical part and can be moved toward the hub cylindrical part, a rotational drive source configured to transmit rotational force around an axis to the bearing unit set in the bearing setting unit; and an inner-ring press-fitting unit configured to externally fit a inner rings of the bearing unit to which the rotational force around the axis has been transmitted, to the hub cylindrical part.

Abstract: A nail plater apparatus includes a board magazine configured to hold stacked boards, and a pair of spaced apart nail plate magazines, with each nail plate magazine configured to hold stacked nail plates. The nail plater apparatus includes a pair of spaced apart nail plate extractor assemblies, with each nail plate extractor assembly associated with a respective nail plate magazine and configured to position a nail plate therefrom to a respective nail plate pressing area. A board feeder is configured to position a board from the board magazine to a board receiving area, with ends of the board being aligned with the nail plates positioned in the respective nail plate pressing areas. A pair of spaced apart nail plate presser assemblies overlie ends of the board receiving area and is aligned with the respective nail plate pressing areas to press the nail plates into the ends of the board.

Abstract: A method for determining the elongation and/or compression of a profiled sealing element applied to a body includes drawing the profiled sealing element, which exists as an endless profiled element, from a store and, with the help of an application roller and by means of an adhesive surface present on the profiled sealing element, rolling the profiled sealing element onto the body part along a line intended for the attachment. A measuring roller, which rolls on the profiled sealing element without slip, is arranged at a small distance before a drive system for the profiled sealing element. The length sensed by the measuring roller corresponds to the length of the profiled sealing element applied to the body along an application distance having a defined length.

Abstract: The invention provides a subsea torque tool (10) for a subsea vehicle system (such as an ROV), a drive head selection mechanism (30), and a method of use. The tool comprises a tool housing and a plurality of torque drive heads (22, 24, 26). The drive mechanism (17, 18, 20, 28) is operable to rotate the plurality of torque drive heads, and the drive head selection mechanism is used to select a drive head to impart a torque to a subsea device. The drive head selection mechanism comprises a rotary actuator (14, 32), and rotation of the rotary actuator effects axial movement of at least one of the plurality of drive heads between an operative position and an inoperative position. In another aspect, the drive head selection mechanism comprises an actuator operable from the exterior of the torque tool. In a preferred embodiment, the drive heads are sockets (22, 24, 26), and the selection mechanism comprises a rotary actuator and a cam mechanism.

Abstract: A beam of a gantry-type stage structure includes an accommodating space defined by a lower plate, an upper plate, a front plate, a rear plate and two lateral plates. A truss unit is disposed in the accommodating space, and includes lower and upper joint members which are respectively disposed on the lower and upper plates, first and second vertical members which extend uprightly from the lower and upper joint members, respectively, and diagonal members each of which extends to interconnect one lower joint member and an adjacent upper joint member to provide the beam with a great structural strength and a lightweight structure.

Abstract: An uppermost cover member of a telescopic cover is fixed to a movable member (a saddle or a table), whereas a lowermost cover member of the telescopic cover is fixed to a stationary member (a pedestal or the saddle) of a machine tool, the stationary member being stopped with respect to a direction of movement of at least the movable member. Attached members, which project outwardly along the direction of movement from the telescopic cover, and which are attached by fastening members to the stationary member, are provided on the cover member. The telescopic cover is provided with a skirt, which is capable of sliding along the direction of movement with respect to the cover member, and which covers the attached members.

Abstract: First and second V-shaped link structures are arranged in an overlapping manner such that a first fixed pin and a second fixed pin of the first V-shaped link structure are positioned relative to a movable pin to one side with respect to the direction parallel to the longitudinal direction of a guide rail while a first fixed pin and a second fixed pin of the second V-shaped link structure are positioned relative to a movable pin to the side opposite to that in the first V-shaped link structure.

Abstract: A drive shaft for a machine tool is connectable to a drilling tool. The drive shaft contains a cavity extending substantially over the entire length of the drive shaft and along the axis of rotation where the cavity contains an inflow opening through which water can be fed along the drive shaft into the drilling tool. An insert device is provided in the cavity, through which, to cool the drive shaft, the water is guided first in a first direction and then in a second direction where the insert device contains a first curved guide element and a second curved guide element for separating the water which is guided in the first direction from the water which is guided in the second direction. The cross-sectional area of the first curved guide element is designed point-symmetrically about a center longitudinal axis to the cross-sectional area of the second curved guide element.

Abstract: A tool holder includes a body, a base and a sprayer. The body includes an outlet portion and an end portion for mounting of a lathe tool. A first water channel hole and two diverted water channels are formed in the body, each diverted water channel has a first end connected to the first water channel hole, and the body has a second water channel hole with one end located on the end portion. The base has a connecting surface in contact with the bottom surface, and a water inlet connected to the first water channel hole, the connecting surface is provided with a groove connected to the water inlet and the second water channel hole. The sprayer includes two water spraying passages with one end located at the first end surface and connected to the diverted water channels, and another end located corresponding to the lathe tool.

Abstract: The invention primarily relates to a system (10) for detecting a total or partial obstruction of at least one internal fluid pipe (11) of a tool (12), characterized in that said system (10) comprises: a pneumatic system (13) that is intended to be connected upstream of said internal pipe (11) of said tool (12), a pressure source (16) that is connected to said pneumatic system (13) by means of a solenoid valve (17), and a control unit (22) that is configured to open said solenoid valve (17) so as to pressurize said pneumatic system (13), and then to close said solenoid valve (17) so as to let said pneumatic system (13) be emptied freely by means of said internal pipe (11), and to detect an obstruction state of said internal pipe (11) depending on an analysis over time of a change in the pressure in said pneumatic system (13).

Abstract: In a method of controlling a rotary table device, a clamp mechanism drive unit is controlled to unclamp a brake disk. Thereafter, a pressure of working fluid supplied to an unclamp fluid chamber is decreased, and a motor drive unit is controlled to rotate a motor. Then, the abrasion quantity of the piston and the clamp member is calculated based on a reference pressure and a pressure when the load torque of a spindle exceeded a reference load torque.

Abstract: A processing system having a function for appropriately maintaining processing accuracy, without depending on a degree of abrasion of a tool. An unused tool used in a machine tool is captured by using a camera mounted on a robot, so as to obtain a reference image of the tool. Next, an image of the tool is captured after a predetermined number of processing operations carried out. An average amount of tool abrasion per one processing operation is calculated based on the two images, so as to estimate a current amount of tool abrasion. Based on the estimation result and a previously input limit amount of abrasion, the number of remaining possible processing operations of the tool is calculated and output.

Abstract: A grinding stroke control device for a valve stem grinding apparatus is fixed to a processing machine and provided for gripping a valve stem or a test bar. Using the hand wheel, the dial gauge and the positioning seat can obtain an initial position, then moving the measuring meter of the positioning mechanism along the transverse direction to make sure the valve stem has the right length with a standard valve clearance. By such arrangements, the grinding stroke control device for a stem valve grinding apparatus of the invention can have a less complicated structure and therefore is more convenient to operate.

Abstract: A carrier device (10) is for handling a lens (12) which is received therein and which has a lateral edge (21), in particular for handling an eyeglass lens (12) in a machining or finishing process. The carrier device (10) comprises a main body (14) and has a connecting member (24) for releasably connecting the main body (14) to the received lens (12). The connecting member (24) forms, with the main body (14), a protective cover (15) surrounding the lateral edge (21) of the received lens (12) and a surface (30) of the received lens (12) directed toward the main body (14). The connecting member (24) is releasably connected to the main body (14).

Abstract: A coupling mechanism which enables a rotating body to follow an undulation of a polishing surface without generating flutter or vibration of the rotating body, and can finely control a load on the rotating body on a polishing surface in a load range which is smaller than the gravity of rotating body is disclosed. The coupling mechanism includes an upper spherical bearing and a lower spherical bearing disposed between a drive shaft and the rotating body. The upper spherical bearing has a first concave contact surface and a second convex contact surface which are in contact with each other, and the lower spherical bearing has a third concave contact surface and a fourth convex contact surface which are in contact with each other. The first concave contact surface and the second convex contact surface are located above the third concave contact surface and the fourth convex contact surface.

Abstract: A lubricated mechanical polishing (LMP) process is provided that uses hard nanoparticles of less than 5 nm diameter dispersed in a fluid lubricant as a polishing slurry to produce an ultra-smooth surface on a hard metallic or non-metallic substrate with a sub-nanometer surface roughness substantially less than that produced by silica chemical mechanical polishing.

Abstract: A substrate holding apparatus is used for holding a substrate such as a semiconductor wafer in a polishing apparatus for polishing and planarizing the substrate. The substrate holding apparatus includes an elastic membrane, a top ring body for holding the elastic membrane, and a plurality of pressure chambers partitioned by at least one partition wall of the elastic membrane. The substrate is held by a lower surface of the elastic membrane and pressed against the polishing surface with a fluid pressure by supplying a pressurized fluid to the pressure chambers. The substrate holding apparatus further include a stopper configured to limit the inflation of the elastic membrane by being brought into contact with a part of the partition wall of the elastic membrane or an extending member extending from a rear surface of the elastic membrane whose surface serves as a substrate holding surface.

Abstract: A polycrystalline diamond body, and a method for making a carbonate polycrystalline diamond body includes combining a first quantity of diamond particles with a first quantity of magnesium carbonate to form a first layer in an enclosure, the first layer having a working surface, and placing a second quantity of magnesium carbonate in the enclosure forming a second layer, the first layer and the second layer forming an assembly. A quantity of at least one of silicon or aluminum is mixed in with or placed adjacent to at least one of the first layer or the second layer. The assembly, including the at least one of silicon or aluminum, is sintered at high pressure and high temperature, causing the at least one of silicon or aluminum to infiltrate at least one layer of the assembly, forming a polycrystalline diamond body.

Abstract: Embodiments of an auxiliary woodworking component may comprise a board having a first side and a second side and a peripheral side edge defining a shape of the board. At least one dovetail shaped first groove is in the first side of the board and having an opening at the peripheral side edge of the board and the at least one first groove extends in a first direction. At least one dovetail shaped second groove is in the first side of the board and having an opening at the peripheral side edge of the board and the at least one second groove extends in a second direction that is different than the first direction. Each of the first and second dovetail shaped grooves is trackless.

Abstract: An improved socket having a drive end opening being so dimensioned for receiving a drive anvil, the opening comprising a plurality of bounding surfaces parallel to a central axis and being disposed in diametrically opposed pairs about the axis, where the diametrically opposed pairs of bounding surfaces include: at least two pairs of flat side surfaces being parallel to each other about the central axis; at least two pairs of curved recess surfaces forming respective inner corners of the drive end opening; and adjacent pairs of outwardly diverging transition surfaces transitioning between respectively adjacent pairs of the flat side surfaces and the curved recess surfaces. The improved socket increases corner radius for minimizing stress concentration at the corners and provides outwardly diverging transition surfaces for relocating the areas of maximum stress away from the corners.

Abstract: Sockets, for example, hexagon sockets, dodecagonal sockets, and splined sockets, that have inner surface geometries adapted to engage a flank of a fastener at a point away from a corner of the fastener. In general, the sockets engage the flank of the fastener at a distance of about 30 to 60 percent of half a length of the flank away from the corner of the fastener. This increases the strength and life of the socket, reduces a risk of the fastener becoming locked or stuck in the socket, and reduces the risk of the fastener being stripped or the socket slipping on the fastener.

Abstract: A rotatable fastening device disclosed in the present disclosure includes a rotating seat and an impact element. The impact element is one-way pivoted at the rotating seat. The rotating seat is rotated along a rotation axis and detachably connected between a driving tool and an element to be rotated. The weight and kinetic energy of the impact element will provide a one-way tangential impact force around the rotation axis with of rotation.

Abstract: The housed socket extension has a high strength tubular housing with a socket extension apparatus which fits within the housing and protrudes from the ends of the housing. Two bearing retaining devices are mounted on the socket extension apparatus, adjacent to the ends of said housing. The first end of the socket extension receives a ratchet wrench or power tool, and the second end of the socket extension apparatus is designed to mate with a socket or tool bit.

Abstract: A self-forming socket assembly includes a socket having an operational end and a connection end. A recess is defined in the operational end and a passage is defined in the connection end and communicates with the recess. A board is rested on a shoulder in the recess and includes a central hole and multiple bores. Each bore has a gripping pin retractably inserted therein, and includes a polygonal section. A bit movably extends through the passage of the socket and the central hole of the board. The bit is positioned in the central hole of the board or positioned to protrude beyond the recess.

Abstract: A pressing tool for producing a non-detachable pipe connection, including holding means for holding the periphery of at least one first tubular or sleeve-shaped connection element and including sliding means for peripherally holding and axially displacing at least one second tubular or sleeve-shaped connection element. The sliding means is movable along a first axial operating direction towards the holding means to press two interengaging tubular or sleeve-shaped connection elements. The pressing tool easily allows pipe connections to be produced in a more flexible and efficient way in that the sliding means are movable towards the holding means along a second axial operating direction opposite the first axial operating direction to press two interengaging tubular or sleeve-shaped connection elements.

Abstract: A stud miss indicator system for a fastener driving tool includes at least one sensor generating at least one signal based on forces generated by a fastener driving operation, a software program configured for receiving the at least one signal, for evaluating the at least one signal as to a fastener being either improperly driven or properly driven, and the program generating at least one appropriate output signal reflective of the evaluation.

Abstract: In order to provide a driver for reducing reaction generated to a driver main body, the driver 1 includes a nose portion 3 provided in a housing 2 and extending in a longitudinal direction, the nose portion being configured to allow a fastener to pass therethrough, a plunger 7 configured to move in an impact direction parallel to the longitudinal direction to impact the fastener through the nose portion, a weight 8, and a coil spring 9 configured to be compressed by a motor 5 in the longitudinal direction. a release of the compression causing the plunger 7 to move in the impact direction, while causing the weight 8 to move in a counter-impact direction which is away from the plunger 7. The coil spring 9 is provided between the plunger 7 and the weight 8. The coil spring has one end portion urging the plunger 7, and another end portion urging the weight 8.

Abstract: An extendible wire guide is slidably fitted at the front of a staple gun tool housing. An easily operated lever switch is linked to the wire guide to enable the wire guide to be deployed or retracted. The lever switch includes an up and a down position corresponding to a retracted and an extended position of the wire guide. The wire guide is resiliently biased, preferably toward the retracted position. The lever switch acts on the wire guide against the bias through a cam action on an upper edge of the wire guide. A bias spring is preloaded in a subassembly of the wire guide and bias spring for simplified final assembly.

Abstract: A multipurpose tool is provided which may be useful for functions relating to firearms and explosives. The multipurpose tool may include a variety of tools and features while maintaining a compact form. For example, the multipurpose tool may include a blade positioned in a pocket defined between a handle and a body member which define a hook configuration. Elongate members may be rotatably connected to the multipurpose tool and may include a base member with a cam surface and one or more detents which cooperate with a spring follower to hold the elongate member in either or both of an operational position or a storage position. A receiving aperture may be received in a jaw of a pair of pliers, and configured to receive an accessory member. Further, a sleeve may store a bit on the side of a handle and may be retained in the sleeve by a displaceable button.

Abstract: A biaxial foldout tool includes a body with opposing ends and one or more sets of tool drivers. The opposing ends are rotated 90° from each other. A first set of tool drivers is positioned on/near a first end and rotates about a first hinge; a second set of tool drivers is positioned on/near a second end and rotates about a second hinge. A first portion of the first set opens in a direction counter to an open direction of a second portion of the first set of tool drivers. A first portion of the second set opens in a direction counter to an open direction of a second portion of the second set of tool drivers. When tool drivers are in an open position, internal stops prevent the tool drivers from opening past a predetermined angle. The tool drivers are contained within channels of the body when in a closed position.

Abstract: Disclosed is a hand-held electric tool, in which a main shaft (1) swings back and forth around an axis (11) to drive accessories (9) of the tool to carry out various types of operations. A swing device is provided with an eccentric element (41) capable of reducing the shock caused to a shell (7) by a connecting rod component (3). Another shell (6) is provided with a valve device (5) used for adjusting the flow of air current in different air ducts. The accessories (9) of the tool can be cooled or cleaned through the air current in one of the air ducts. The main shaft (1) is provided with an elastic support (2) used for balancing the load when an electrical motor (8) is operating. The elastic support (2) can replace a bearing in supporting the main shaft (1) swinging back and forth around the axis (11).

Abstract: An insect nest removal assembly includes a telescopic pole that has a fluid coupling at one end, a head coupling at another end, and a sealed hollow interior extending an entire length between the fluid and head couplings; a head connected to the head coupling that includes a blade, a brush, and a passage in fluid communication with the sealed hollow interior of the telescopic pole and the brush; and a fluid control valve connected to the hollow interior of the telescopic pole.

Abstract: A personal care product includes an elbow, a handle, an arm, a first personal care attachment, and a second personal care attachment. The elbow has a first end extending in a first direction and a second end extending in a second direction that is non-parallel to the first direction. The handle is coupled to the first end of the elbow such that the handle extends in the first direction. The arm is coupled to the second end of the elbow such that the arm extends in the second direction. The first personal care attachment is detachably coupled to the arm. The second personal care attachment is interchangeable with the first personal care attachment.

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 locking mechanism for securing for use an item selected and retrieved from an opening in a storage device configured for storing one or more items, includes a tubular shaft extending from the opening in the storage device for receiving the selected item from the storage device. A passageway is defined within the tubular shaft for facilitating travel of the selected item from the opening in the storage device to an end of the shaft opposing the opening. At least one locking block and stop is configured for securing the selected item at the end of the tubular shaft opposing the opening.

Abstract: A pack system adapted for carrying hand tools includes a tool-carrying container constructed to be worn on a user's person and having a container base portion, a first shell portion, a second shell portion, and a releasable closure with a first closure part connected to the first shell portion and a second closure part connected the second shell portion. The tool-carrying container is operable between an open-container position and a closed-container position in which it defines and encloses a main storage compartment. At least one tool panel is removably disposed within the main storage compartment and has one or more tool receivers each constructed to retain a hand tool. A panel-retaining structure has a first retaining portion secured to the tool panel(s) and a second retaining portion secured inside of the tool-carrying container. The panel-retaining structure releasably retains the tool panel(s) in the main storage compartment.

Abstract: A roadside repair safety mat includes a mat body that is, preferably, a flexible closed foam core with an integral top and bottom cover made of a sturdy waterproof material. The mat body includes a semi-circular, cut-out to fit around a flat tire on a vehicle and has receivers that fit poles for lighting a work area around the tire and caution poles nearer the road to flash a warning, which allows the user to kneel comfortably on the padded mat and to work in a secure environment while changing a tire at night. The mat includes pouches to carry necessary tools and is flexible so that it may roll up with the light poles and fit in a vehicle trunk.

Abstract: A fifth wheel yanker moves a fifth wheel release handle in the sequence needed to operate the release handle in the sequence used by, for example, the Jost brand of fifth wheel Jost fifth wheel safety catch release mechanisms. Also disclosed is a device for releasing a trailer from a tractor and opening a door handle. The device comprises a shaft extending between a first end connected to a handle, and a second end connected to a lever, A hook is connected to the shaft proximate the second end, and the lever points generally opposite the direction of the hook. A tube is connected to the shaft proximate the second end. The tube has a passageway defined by at least one wall and at least one opening.