Abstract: A fastener includes a base having a joint plate extended therefrom toward a first direction, a joint plate extended from the joint plate toward a second direction and configured to secure to an electronic base board, and a fastening member protruded thereon toward a third direction. The fastener includes an elastic compressive unit connected to the joint plate and including a pushing part configured to abut with a circuit board downwardly rotated. Subject to the stress in the first direction and applied by the circuit board, the pushing part is moved back and the elastically-compressive unit is compressed to make the circuit board rotate to the bottom side of the pushing part, and an edge of the circuit board can be inserted into and abutted thereon the fastening member, and the circuit board is accommodated in a fastening space formed on the outside of the fastening member.

Abstract: A system for repairing a defect on an articular surface of a patient's trochlear region, the system comprising a guide block comprising a body having an exterior surface configured to engage with the saddle portion and ridge portions of the patient's trochlear region, a protrusion extending generally from the body and configured to be received in a first bore formed in the articular surface along a reference axis, and a first cavity extending through the body configured to establish a first working axis displaced from the reference axis, wherein the exterior surface of the body and the protrusion are configured to secure the location of the guide block about the patient's trochlear region.

Abstract: A positioning fastener includes a base having a seat plate extended therefrom, a fixing portion disposed below the base for fastening to an electronic substrate, and an elastic positioning structure disposed above the base and including an urging plate, a pressing plate connected to the urging plate, a positioning space defined therein and a positioning member disposed at a bottom side thereof. The urging plate and the pressing plate are squeezed backwards and elastically deformed by a circuit board that is rotated downward so that the circuit board passes the urging plate and moves into the positioning space of the elastic positioning structure and a suspended board edge of the circuit board is secured in position by the positioning member. The pressing plate can be pressed by an external force to lift the urging plate, allowing the circuit board to be rotated in direction away from the positioning member.

Abstract: An apparatus for installing pins on a base is provided. The apparatus includes an upper positioning plate provided with a plurality of first pin holes through which pins can pass, a lower positioning plate arranged opposite the upper positioning plate and provided with a plurality of second pin holes through which pins can pass, wherein the plurality of second pin holes correspond to pin marks on the base, and a move assembly which is arranged between the upper positioning plate and the lower positioning plate, the move assembly configured to cause the upper positioning plate and the lower positioning plate to move relative to one another, such that at least some of the plurality of first pin holes align with target pin marks on the base.

Abstract: A method of reproducing a central axis of a femoral neck prior to resection during an implantation process includes the step of attaching a frame to the acetabulum of a patient, wherein the frame includes first and second movable arms and a lockable swivel bearing. The method further includes the steps of orienting and locking the swivel bearing in position and utilizing the position of the swivel bearing to position acetabular instrumentation to match a planned acetabular implant orientation.

Abstract: A milling machine table device comprises a rigid longitudinal body having longitudinal surfaces parallel to each other along a length of the body configured to be attachable to a vise; and two rigid legs of equal length extending from the longitudinal body in a fixed position, each leg comprising a portion configured to engage a t-slot of the milling machine table there beneath. Also, a milling machine table device comprises two legs of equal length extending from the longitudinal body, each leg configured with a portion configured to engage a t-slot of the milling machine table and indicators disposed in one of the body and the two legs, the indicators comprising an adjustable probe configured to indicate an orthogonal distance from one of a vise jaw and an edge of a t-slot to an end of the probe. A method for calibrating and squaring the device is also included herein.

Abstract: A curtain cutting aid includes a curtain holder including two hollow holder blocks arranged in parallel and defining therein a respective insertion space in communication with each other for a insertion of a curtain, a bearing plate connected between the two hollow holder blocks and a cutting groove defining between the two hollow holder blocks for the insertion of a cutter to cut off the inserted curtain, and a stop rod selectively and detachably mounted in the insertion space of one of the two hollow holder blocks to stop the inserted curtain in place for cutting. Thus, the curtain cutting aid can effectively enhance the convenience and precision of the cutting operation.

Abstract: A connecting device includes an activator, a linkage mechanism, a cam, a guide, a locking bar, a torsion spring, and a spring element. The activator is rotatably connected to a first stackable storage unit. The linkage mechanism is rotatably connected to the activator. The cam is rotatably connected to the linkage mechanism. The guide defines a guiding groove. The locking bar passes through the guide and stays in contact with the cam. The locking bar includes a locking block and a rib. The rib protrudes from the lateral surface of the locking bar. The rib is slidably received in the guiding groove. The torsion spring is pivoted on the locking bar. The spring element exerts a force to the locking bar.

Abstract: A clamping device comprises a clamping base and a cam mechanism. The clamping base has an opening for receiving at least a part of an object to be clamped and a cavity for receiving the cam mechanism. The cam mechanism is rotatable with respect to the clamping base between a first position, in which the clamping device completely locks the object to be clamped, and a second position, in which the clamping device completely releases from the object. The clamping device can achieve clamping/locking of an object without use of additional tools. In some cases, the clamping device can operated among three different positions, i.e., completely released position, pre-locked position, and completely locked position, facilitating the control and handling of the object.

Abstract: Printed circuit board (PCB) assembly tooling and methods are provided. Particular tooling includes a first tooling fixture having a first core component receiver to receive a first portion of a magnetic core to be coupled to a first side of a PCB. The tooling also has a second tooling fixture including a second core component receiver to receive a second portion of the magnetic core to be coupled on a second side of the PCB to the first portion of the magnetic core. The tooling also has an alignment component disposed on at least one of the first tooling fixture and the second tooling fixture. The alignment component enables alignment of the first tooling fixture and the second tooling fixture. When the first tooling fixture and the second tooling fixture are aligned, the first portion of the magnetic core and the second portion of the magnetic core are aligned.

Abstract: The system for installing shower walls includes a pressure transfer member for urging a shower wall against a back up support during bonding of the shower wall to the support. An adjustable force development device engages the pressure transfer member to force the pressure transfer member against the shower wall. A support member engages the pressure transfer member when the force development device exerts a predetermined force against the shower wall. A fixation device holds the support member to maintain the pressure transfer position of the pressure transfer member. The fixation device includes a cam that moves a shower wall into a tight corner fit with an adjacent shower wall.

Abstract: An arrow fletching jig provides operation that adapts to various arrow shaft diameters and arrow fletching patterns. The fletching jig includes a clamp secured to a base. The clamp secures a fletch at a fixed orientation along the arrow shaft while the fletch is being glued to the arrow shaft. The clamp can be made rotatable to tilt the clamp with respect to the arrow shaft, so that the fletch forms a helicoid around the shaft. The clamp may provide semi-cylindrical notches at each end to maintain spacing of arrow shaft and clamp by contacting the arrow shaft along an inner surface of the semi-cylindrical notches when an end of the clamp is rotated around the shaft to tilt the clamp. The fletching jig may also include a notched arrow shaft clamp for securing the arrow shaft to the base, which is rotated to secure and release the arrow.

Abstract: A quick-release retainer bracket for mounting objects to a platform, has a base plate enclosing a pocket in a center thereof, and a pair of retainer plates positionable on top of said base plate on opposed sides thereof, the base plate and retainer plates mountable on a platform with the retainer plates moveable over the base plate from a retracted position in which the retainer plates are partially overlapping a pocket to an extended region in which the retainer plates do not overlap the pocket.

Abstract: A device is provided for use to securely clamp a medical mechanism to a person carrier, such as a lifter, stretcher, gurney, or the like, to facilitate providing medical treatment to a person during transport of the person to a medical facility, The device has an open condition released from the person carrier and a closed condition whereupon it clamps very securely to a rail of the person carrier; with the material of the person carrier facilitating securing to the person carrier the device as well as the medical mechanism to be secured to the person carrier. The medical mechanism may, by way of example, be a relatively heavy mechanism for providing infusate to the person or a relatively heavy control for the infusate providing device. No matter what it could be severely damaging to the person on the carrier, medical personnel and transport personnel if a relatively heavy mechanism loosened from the person carrier and moved uncontrolled around the transport.

Abstract: An anti-tipping clamp that is used as an intermediary support for a die tool. The clamp includes a body with a rail engagement section designed to engage with a rail on a conventional forming machine for securing the clamp to the rail. The clamp also includes a die tool holding section with two spaced apart lateral arms that extend upward from a body and which provide support for a die tool.

Abstract: An auto hammer having a housing, a grip portion and a striking device. The striking device includes a striking rod for striking a nail or other element using a straight reciprocating motion. The striking device has an associated clamping mechanism for clamping the nail or other element. The clamping mechanism has a driving portion, a first clamping portion, and a second clamping portion. The first and second clamping portions are moved between a closed position and an opened position. In the closed position, the element is held between the first and second clamping portions. A first slot and a second slot are arranged on the first and second clamping portions respectively. The driving portion is arranged in both the first and second slots and moves along the first and second slots.

Abstract: A clamping mechanism having two or more jaws which may be opened to allow a tubular to be introduced within the jaws and closed to retain the tubular therewithin. The rollers are located within concave recesses and maintained in spaced apart relationship by biasing means, whereby rotation of tubular may cause the rollers to be wedged between a wall of the recess and the tubular to grip the tubular within the jaws. The clamping mechanism may be utilized as an oil field tubular clamp, a slip, a pipe clamp, and other mechanisms. There is also disclosed a clutch comprising an outer race, a cage, and an inner ring. Recesses are provided in an outer race and accommodate rollers therewith and maintained in spaced apart relationship by the cage. The cage may be moved by an actuator to selectively allow free wheeling or prevent rotation. A socket ratchet incorporating such a clutch is also disclosed.

Abstract: A clamp includes a rear receptacle; a front fixed jaw carrier having an eccentric guide and a guide slot; an intermediate moveable jaw carrier; a handle having one end urged against the guide member and comprising a slide sleeve retained in one end of the guide slot in a standby position; a slide bar having one end fastened in the slide sleeve and the other end being spring-actuated in the receptacle, a portion of the slide bar passing the guide member and the moveable jaw carrier; and a locking assembly comprising a seat including a funnel shaped channel; a spring-actuated slide member threadedly fastened in the seat and including a funnel shaped member having two steel balls and a projection; and a release lever having one retained end and including a tunnel and a biasing member put on the projection and biased between the seat and the release lever.

Abstract: A clamp including an upper body including a proximal end, a distal end, and an upper fulcrum, the upper fulcrum being positioned between the proximal end and the distal end of the upper body, wherein the distal end of the upper body includes an upper jaw, a lower body including a proximal end, a distal end, and a lower fulcrum, the lower fulcrum being positioned between the proximal end and the distal end of the lower body, wherein the distal end of the lower body includes a lower jaw, an edge pusher having an upper projection pivotally engaged with the upper fulcrum and a lower projection pivotally engaged with the lower fulcrum, an actuating lever pivotally connected to the upper body, the actuating lever including a cam lobe moveable relative to the lower body to displace the proximal end of the lower body away from the proximal end of the upper body, and a biasing element positioned to bias the upper jaw away from the lower jaw.

Abstract: A cam lock clamp comprises a stud having a substantially cylindrical body with a first end including a head area and a second end arranged to support one or more disc springs concentrically about the stud. A socket is arranged to mechanically couple concentrically around the stud with the head area of the stud being exposed above an uppermost portion of the socket. The socket is configured to be firmly attached to a consumable material. A camshaft has a substantially cylindrical body and is configured to mount within a bore of a backing plate. The camshaft further comprises an eccentric cutout area located in a central portion of the camshaft body. The camshaft is configured to engage and lock the head area of the stud when the consumable material and the backing plate are proximate to one another.

Abstract: A device is provided for use to securely clamp a medical mechanism to a person carrier, such as a lifter, stretcher, gurney, or the like, to facilitate providing medical treatment to a person during transport of the person to a medical facility, The device has an open condition released from the person carrier and a closed condition whereupon it clamps very securely to a rail of the person carrier; with the material of the person carrier facilitating securing to the person carrier the device as well as the medical mechanism to be secured to the person carrier. The medical mechanism may, by way of example, be a relatively heavy mechanism for providing infusate to the person or a relatively heavy control for the infusate providing device. No matter what it could be severly damaging to the person on the carrier, medical personnel and transport personnel if a relatively heavy mechanism loosened from the person carrier and moved uncontrolled around the transport.

Abstract: A clamp including an upper body including a proximal end, a distal end, and an upper fulcrum, the upper fulcrum being positioned between the proximal end and the distal end of the upper body, wherein the distal end of the upper body includes an upper jaw, a lower body including a proximal end, a distal end, and a lower fulcrum, the lower fulcrum being positioned between the proximal end and the distal end of the lower body, wherein the distal end of the lower body includes a lower jaw, an edge pusher having an upper projection pivotally engaged with the upper fulcrum and a lower projection pivotally engaged with the lower fulcrum, an actuating lever pivotally connected to the upper body, the actuating lever including a cam lobe moveable relative to the lower body to displace the proximal end of the lower body away from the proximal end of the upper body, and a biasing element positioned to bias the upper jaw away from the lower jaw.

Abstract: A bar clamp has an operating handle being in ratchet engagement with end teeth of a slide bar. The operating handle is adapted to pivot counterclockwise to cause a first clamping jaw carrier to displace along the slide bar and then pivot about a lock pin in the slide bar so as to displace a first clamping jaw a sufficiently large distance to securely clamp a workpiece by cooperating with a corresponding clamping jaw.

Abstract: A self-centering skate holder for clamping a skate blade from above and below which maintains the blade at a predetermined height and parallelism. A handle is connected with a cable which is taut and extends around the circumference of the upstanding vertical member. The movements of the cable activate cam levers which rotate cams that move a pair of jaws towards or away from each other. The simultaneous movements of the cams ensure that the jaws move in unison and through a similar distance allowing a skate blade of any thickness to be clamped along the desired centerline. In an alternative mechanism, a tie bar extends between the jaws and is operated by a cam to induce equal and opposite movement of the jaws.

Abstract: A sliding clamp and clamp assembly are provided. The clamp assembly includes a cam member that, when actuated, biases a stationary clamp jaw assembly toward another jaw assembly. The cam member utilizes a ball-and-socket coupling to couple the cam member to the sliding clamp bar. The ball-and-socket coupling allows the cam member, and an extended actuator, to be pivoted and rotated into an infinite number of positions.

Abstract: The invention provides a multi-purpose reversible clamp comprising a threaded rod having a handle fixed at a first end, a lower jaw mounted on the threaded rod above the handle, the lower jaw including a female corner receiving portion facing away from the handle, wherein the uppermost portions of the female corner receiving portion include a plurality of flattened surfaces that share a common plane. The clamp also includes an upper jaw with a male corner portion on a first end and a flat surface on a second end. In a corner clamping configuration, the upper jaw is mounted on the threaded rod with the male corner portion facing the female corner receiving portion of the lower jaw. In a parallel clamping configuration, the upper jaw is mounted on the threaded rod with the flat surface facing the flattened points of the lower jaw.

Abstract: A new and improved method for calibrating workpiece clamping mechanisms such that once a particular clamping mechanism is calibrated with respect to a particular workpiece to be clamped upon a support surface, the clamping mechanism will always clamp the workpiece with a predetermined, precisely repeatable clamping force. In addition, the method of the present invention may be utilized in conjunction with the calibration of a plurality of clamping mechanisms so as to enable the plurality of clamping mechanisms to always generate the same precise clamping force whereby the multiple clamping mechanisms, utilized to clamp a single workpiece upon a support surface, can in fact clamp different regions of the single workpiece with precisely the same predetermined clamping force such that all regions of the single workpiece are in fact securely clamped.

Abstract: A wheel clamping assembly provides a frame having three arms, two fixed stops and a turnable cam. The arms are equally spaced and have holes to admit the stops and the cam. The stops have an extension eccentrically located upon the top of the cylinder. Then the cam has an involute, having an expanding radius, upon the top of the cam. In use, the stops are placed upon two arms and the cam is placed upon the remaining arm, all at the same radius. A wheel rim is positioned upon the stops and the cam. The cam is then turned to grasp the wheel. The stops and the cam are made of a non-marring material.

Abstract: An x-ray cassette holder and clips capable of holding various types of x-ray cassettes including aluminum cassettes and tunnel cassettes. The clips when used with the tunnel cassettes allow for the changing of the vinyl cassette without releasing the cassette holder. The shaft or upright structure is calibrated to allow for easy positioning of the height of the cassette.

Abstract: A tool for forming a high strength reinforcing bar coupling driving self-locking wedge sleeves over each end of a contractible jaw assembly bridging the abutting ends of the bar to be joined. The sleeves are seated in collars engaged by the distal ends of arms driven for closure by a piston-cylinder power unit and a cam on at least one arm. In one form the cam on one arm is engaged by a roller connected by a tension link to the other arm. In another form cams are provided on each arm driven by rollers fixed with respect to each other. The collars include self-releasing collets seating the sleeves. The tool has other uses such as bar shearing or forming.

Abstract: A sheet metal bending brake having a frame with a planar work supporting surface and a plurality of spaced frame members extending over the work support surface. Each frame member has a throughbore and these throughbores are aligned with each other. A plurality of elongated pivot arms are pivotally secured at one end to the frame for movement toward and away from the work supporting surface. Each pivot arm also includes a generally rectangular opening aligned with the frame member throughbores. A block is longitudinally slidably mounted in each pivot arm opening and this slide block is constrained against movement in a direction perpendicular to the work support surface. Each block furthermore includes a trapezoidal opening with spaced apart and parallel top and bottom surfaces and outwardly flared side surfaces. An elongated shaft extends through and is rotatably mounted to the frame member throughbores and this shaft also extends through the trapezoidal openings in the pivot arms.

Abstract: An apparatus for machining a turbine blade assembly includes at least one locator for positioning the blade assembly with respect to the apparatus. The apparatus also includes at least one biasing mechanism for maintaining a relative position of the blade assembly with respect to said apparatus and at least one clamping device that includes a predetermined locking position. The clamping device retains the blade assembly.

Abstract: A plank cramp (110) including:

Abstract: A cabinetmaking system having a framing table including opposed fences on each side and a series of adjustably positionable clamps. One of the fences includes a removable central section for maneuvering a cutting tool therethrough. The clamps each include an eccentric cam rotating about a single bolt for securing workpieces along with pressure blocks for edge routing, making glue cuts, forming “biscuit cuts” in the ends and sides for tongue and groove joints, cutting decorative bevels, etc. The system further includes a panel table for clamping cabinet side and rear panels thereto for routing edge and surface grooves for joining the panel together.

Abstract: A boring tool head has a movable element which can be moved by means of an adjuster relative to a centerline. Attached to the movable element is a cutting tool which moves with the movable element. A hole which is slightly smaller in size than the desired hole is first bored with the boring tool head and its size precisely measured. The fitting of the invention is then clamped onto the boring tool head by means of a clamping lever. The fitting has a position sensor which abuts against the movable element of the boring tool head, an indicator being attached to the sensor which provides an indication of the sensor's lateral position. The indicator is set to zero and the boring tool head adjuster set to bring the movable element of the boring tool head, as indicated on the indicator, to the desired position for increasing the size of the initially bored hole to the desired precise dimension.

Abstract: A mounting assistance device with which a vibrating device can be efficiently mounted to a tire and wheel assembly. In the mounting assistance device, abutting portions are made to abut against sidewall portions of a tire and then an eccentric disc is pressed against a sliding portion so as to be united therewith by lowering a lever of a handle member in a first direction. In this state, when the lever is rotated 180° about a pin member in a second direction, due to an effect of the eccentric disc, clamping members move in a mutually approaching direction. Accordingly, clamping and fixing to the tire is accomplished by the mounting assistance device. Thus, the mounting assistance device (and vibrating device) can be mounted without using tools, simply by rotating the lever in the two directions.

Abstract: An apparatus for assisting the mounting of a tire-wheel assembly onto an axle in a high precision without eccentrically arranging the assembly from the axle comprises a pair of opposite clasping members sandwiching the tire-wheel assembly from its side surfaces therebetween, a vibration applying machine fixed to one of the clasping members, and a fastening means for temporarily fastening the clasping members at a given position.

Abstract: ABSTRACT A mechanical clamp for securing a workpiece according to the invention includes a clamp plate having an end for engaging a workpiece and a fulcrum spaced apart from said end. A pivotal handle is pivotally connected to said clamp plate by a connecting rod. A base plate is disposed intermediate the pivotal handle and includes a slot therethrough for receiving the connecting rod. The cam surface of the pivotal handle selectively engages the base plate to cause the clamping force at the end for engaging said workpiece. The fulcrum concentrates that clamping force at the end of the clamp plate.

Abstract: A clamping device includes a clamp arm (2), an operating lever (3) for pivotally operating the clamp arm (2), and a toggle mechanism (T) provided in connection with the operating lever (3). The clamp arm (2) is formed with a guide path (2a) that intersects a direction in which the clamp arm (2) pivots so that an output member (9) of the toggle mechanism (T) is guided along the guide path (2a). Accordingly, workpieces (W) of heights that can vary over a wide range of up to several centimeters can be firmly fixed without the necessity of performing a troublesome adjustment operation.

Abstract: A workpiece indexing and clamping system for machining the workpiece. Spherical or narrow cylindrical heads of index pins extend from holes in a base plate into workpiece holes to align and index the workpiece. The pin portions in the base plate holes can be expanded to lock them to the base plate. Each pin has relief flats parallel to the pin axis. Clamps engage workpiece edges with thread-like angled grooves on a cam surface to force workpiece edges against the base plate during machining of the workpiece. A central clamp has a pin extending from the base plate into a workpiece hole. Angled grooves in a cam surface are brought into contact with the hole sides to force the workpiece toward the base plate and hold the central area in place during machining.

Abstract: A vice device consisting of a frame containing a fixed jaw and a rack, the rack being placed in a plane perpendicular to the fixed jaw; and a mobile jaw, containing a body and a jaw mobile in movement compared to the body. The jaw is mobile in movement parallel to the rack with the possibility of locking onto the rack by means of a rack mobile in the body equipped with notches at its end opposite the rack and biased in the direction of rack by at least one spring and maneuverable by a lever connected to the body. The end of the body connected to the lever being linked to a cam which leans on the posterior part of the mobile jaw in order to allow the spreading of the mobile jaw compared to the body in the direction of the fixed jaw.

Abstract: A clamp apparatus having a locking body with a tapered lower cam surface, and a stationary mounting member on which the locking body is rotatably mounted. The cam surface is substantially perpendicular to the rotational axis of the locking body to provide a large cam surface area for secure locking and holding of workpieces. A cutout portion on the locking body defines an open position wherein a workpiece can be positioned adjacent to or removed from the clamp apparatus. When the locking body is rotated into a locking position, the tapered cam surface engages and clamps the workpiece beneath the locking body to secure the workpiece in place. A stop or stops on the mounting member prevents the locking body from rotatably moving into unwanted positions. A resilient O-ring positioned between the mounting member and locking body provides traction therebetween.

Abstract: A work piece clamping device is composed of a clamping block, a locking cover, a plate button, a support rod, a press rod, a tightening nut engaged with the press rod, and a fastening member. The clamping block is provided with a vertical wall for locating a work piece in place on a workbench top. The clamping block can be moved up and down along the support rod by the fastening member which is located under the workbench top and is movably fitted over the support rod. The clamping block is exerted on by the pressure of the plate button so as to hold securely the work piece on the workbench top.

Abstract: An apparatus for clamping electrophoresis gel cassettes to a buffer core body is provided that does not require separate clamping subassemblies. The apparatus comprises a cam pivotally coupled to a mounting block. The apparatus is inserted into an electrophoresis container and is positioned adjacent a buffer core assembly that includes gel cassettes disposed on opposite sides of a buffer core body. The cam is disposed to engage a back wall of the container to cause the mounting block to apply uniform pressure to secure the gel cassettes to the buffer core body. A method for securing an electrophoresis gel cassette to a buffer core body in an electrophoresis container is also disclosed.

Abstract: A device for fixing an object to the edge of a flat support, the support having a top face on which the object is to be fixed and a lower face. A vertical section piece, positionable close to the edge of the support, is perpendicular to the plane of the support. The upper end of the section piece has an element which engages and holds the object on the top face of the support, e.g. rods projecting into a cavity in the object. An arm extending perpendicular to the section piece supports at one end thereof a cam for being selectively moved to press against and released from pressing against the lower face of the support. The section piece passes through an opening in the arm and the arm with the cam thereon is tiltable with reference to the section piece for locking the arm along the section piece. A lever then rotates the cam to press against the lower face of the support.

Abstract: A universal fixture for holding printed circuit board assemblies during stencil printing, pick-and-place processing, and other PCB assembly processes. In one embodiment, a universal printed circuit board holder has a base and a plurality of support members movably attached to the base. The support members may project away from the base along support paths, and the support members are selectively positionable along the support paths when the support members engage a side of a printed circuit board assembly. Accordingly, the support members may be selectively positioned at heights corresponding to a topography of the side of the printed circuit board assembly to uniformly support the printed circuit board assembly.

Abstract: A blade changing tool for changing a table saw blade having a cutting blade. The table saw has a top surface and at least a portion of the blade is disposed above the top surface. The blade changing tool includes a housing having a top and two oppositely disposed sides defining a blade slot therebetween. The blade slot is dimensioned such that the slot can conceal at least a substantial portion of the blade edge disposed above the top surface of the table. A projection extends transversely from at least one of the sides to retain the housing from rotation relative to the table. The tool can include apparatus for retaining the blade against rotation relative to the housing.

Abstract: A waler system includes a number of clamps each of which has a lower leg including a tab with a hole therein which is secured to the wall form of a poured concrete wall system by a standard pin connection. An upper leg of the clamp translates between a loading/unloading position so that a waler beam can be installed easily and conveniently on the clamp attached to the wall form. Each of the clamps is then simply translated into the clamping position by forcing the upper leg downwardly and inwardly toward the beam and the wall form. After the concrete has been poured and the wall cured, the waler system can be disassembled by simply translating the upper leg of each clamp upwardly and outwardly to disengage the waler beam. The transformation is assisted by a spring captured within the upper leg of each clamp.

Abstract: A workpiece indexing and clamping system for machining the workpiece. Spherical or narrow cylindrical heads of index pins extend from holes in a base plate into workpiece holes to align and index the workpiece. The pin portions in the base plate holes can be expanded to lock them to the base plate. Each pin has relief flats parallel to the pin axis. Clamps engage workpiece edges with thread-like angled grooves on a cam surface to force workpiece edges against the base plate during machining of the workpiece. A central clamp has a pin extending from the base plate into a workpiece hole. Angled grooves in a cam surface are brought into contact with the hole sides to force the workpiece toward the base plate and hold the central area in place during machining.

Abstract: The clamp is a locked over-center toggle clamp having a toggle lever that actuates a clamp arm between clamped and released positions. An amplification lever is secured to a cam pivot for rotation of the cam pivot inside a base. One end of the clamp arm is pivoted to the cam pivot to act as a follower so that rotation of the cam pivot cams the clamp arm to amplify the hold-down force of the toggle clamp.