Abstract: A method is provided for determining the shape of a surgical linking device that is to be attached to a bony body structure such as the spinal column based on digitized locations of a plurality of attachment elements engaged to the bony structure. The method is implemented by a computer system through a GUI to generate an initial bend curve to mate with the plurality of attachment elements. The initial bend curve may be simplified based on user input to the GUI to reduce the number of bends necessary to produce a well-fitting linking device and may be altered to help obtain the goals of surgery.

Abstract: A system for rod bending for use in robotic spinal surgery, enabling the correct bending of a fusion rod to match the shape required to accurately pass through the heads of the pedicle screws. The system uses data generated by information provided to the robot by the surgeon's preoperative plan, optionally augmented by feedback from the robot control system of deviations encountered intraoperatively. Such deviations could occur, for example, when the surgeon decides intraoperatively on a different trajectory or even to skip screws on one vertebra, in which case, the robot will be commanded to perform the alternative procedure, with commensurate instructions relayed to the control system of the rod-bending machine. The system is also able to thin down the rod at predetermined locations along its length, adapted to be at selected intervertebral locations, for maintaining limited flexibility between vertebrae, instead of fixating them.

Abstract: According to one example, a spark plug gapping tool includes a first side handle, a second side handle, a middle handle, and a pusher that are made of a non-metallic material. The middle handle is positioned in-between the first side handle and the second side handle, and has a stopper surface and an insert slot that can receive a feeler gauge insert. The pusher is rotatably positioned in-between the first side handle and the second side handle, and has a hollow housing that can receive a terminal end of a spark plug. In operation, a distal end of the middle handle and distal ends of the side handles can move closer together, when a proximal end of the middle handle and proximal ends of the side handles are moved closer together by a user's hand, so as to gap the spark plug.

Abstract: A high-precision heavy-load numerically-controlled flanging machine comprises a machine frame, an edge pressing assembly, a flanging beam and a flanging beam transmission mechanism that comprises an inclined slide rail, an inertia block and two crank-connecting rod mechanisms; the flanging beam is provided with a driving inclined plane; the inclined slide rail is mounted on the machine frame; the inertia block is provided with two non-parallel inclined planes, wherein one inclined plane of the inertia block is slidably mounted on the inclined slide rail to form a sliding pair I, and the other inclined plane of the inertia block is in sliding fit with the driving inclined plane of the flanging beam to form a sliding pair II; cranks of the two crank-connecting rod mechanisms are hinged on the machine frame.

Abstract: A method of forming a shaped container may include providing a metallic preform. A first pressure may be applied to the metallic preform within a mold of a shaped container to produce a container part with a partially formed container shape. The container part with the partially formed container shape may then be at least partially annealed. A second pressure may be applied to the container part within the mold to produce a container part with a fully formed container shape.

Abstract: A device for compensating for the natural shrinkage of building materials includes an expander mounted on a base plate. An opening in the expander aligns with a hole in the base plate to define an axis and receive a shank of a fastener. The expander is biased axially away from the base plate substantially at the axis. The base plate can be securely fastened to a first building member. A fastener can be axially fixed relative to a second building member and the expander but not axially fixed relative to the base plate and first building member.

Abstract: A method and apparatus comprising a structure and a locking magnet. The structure comprises a retaining portion and a magnetic portion. The retaining portion of the structure is configured to receive a first section of a workpiece such that a second section of the workpiece is positioned at an angle relative to the magnetic portion of the structure. The magnetic portion of the structure is positioned at a first side of the workpiece. The locking magnet is configured to exert an attractive force that causes the magnetic portion of the structure to move towards the second section of the workpiece when the locking magnet is positioned at a second side of the workpiece.

Abstract: A transportable straightening beam which makes it possible to straighten deformed potshell sidewalls of different deformation resistance independently of one another is disclosed for use both with potshell carrying structure and potshell sheeting. The beam can extend between two potshell walls lying opposite one another. Each of its two end regions has a straightening jaw with a downwardly open U-profile-shaped orifice through which the straightening beam can be positioned onto the top side of the potshell sidewalls. Each straightening jaws being arranged with at least one hydraulic straightening ram parallel to the potshell bottom, and the straightening rams lying along a line of action, and such that one straightening jaw lies opposite the other straightening jaw which is carrying out the straightening work on a deformed potshell wall while being firmly braced with the top side of the potshell sidewall and serving as a captively fixed counterbearing.

Abstract: The invention relates to such a method and apparatus, as well as to the resulting deformed object out of a relatively hard material such as e.g. a metal or plastic wire in which an undeformed section (2) is clamped near its ends (3, 4) and is subsequently upset in a controlled way by an axial pressure force (22) to a predefined shortened and thickened longitudinal section (5), with which simultaneously over substantially the entire contour sheath (19) of this section (2) a counterforce (29) is exerted so that, with the progressive deformation during upsetting, the total volume of the longitudinal section that is deforming, remains substantially constant. In this thickened section (5) a flattened zone (8) can subsequently be applied in order to realise a final shape (10) such as an opening (26). The invention concerns in particular also the use of a deformation line (40) for manufacturing a heddle for weaving looms.

Abstract: A method produces a bent part by two- or three-dimensional bending of an elongate workpiece, in particular a wire or tube, in a bending process wherein at least one portion of the workpiece is moved into an initial position in the region of engagement of a bending tool by one or more feed operations by the coordinated activation of the movements of driven machine axes of a bending machine numerically controlled by a control device and is formed by bending in at least one bending operation with the aid of a bending tool. The movements of the driven machine axes are generated according to a movement profile predeterminable by the control device of the bending machine and include at least one oscillation-relevant movement leading to an oscillation of the free end portion of the bent part. During an oscillation-relevant movement, a compensating movement, reducing the generation of oscillation and/or damping the oscillation, a machine axis is generated in at least one compensation time interval.

Abstract: A bending apparatus has (a) a first manipulator which feeds a hollow metal blank of closed cross section in its lengthwise direction, (b) a second manipulator which supports a first support means disposed at a first position and a metal blank while feeding it, a heating means disposed at a second position downstream of the first position in the blank feed direction for heating all or part of the circumference of the blank, and a cooling means disposed at a third position downstream of the second position for cooling a portion of the heated blank, and (c) a third manipulator which constitutes a second support means disposed at a fourth position downstream of the third position in the feed direction of the blank and which moves two-dimensionally or three-dimensionally while supporting at least one location of the metal blank to bend the metal blank into a desired shape.

Abstract: An apparatus and method for straightening an article are disclosed. The apparatus and method disclosed provide for the conservation of metal, reduction waste worldwide, and the extension of the useful life for an article. The apparatus may comprise an actuator, an endpiece coupled to the actuator, the endpiece including two arms, the arms defining a space therebetween; and a support member including two rails, the rails defining a space therebetween. Upon activation of the actuator, the arms engage the article disposed on the rails. Also, the space between the arms is aligned with the space between the rails. Both spaces are adapted to receive article portions such that portions within the spaces are not engaged by the arms.

Abstract: An apparatus and method for bending a printing plate is disclosed. A bending machine, in particular for the bending of printing plates which are used in printing machines, includes a pressure pad, which exerts the required clamping force on the printing plate during the bending operation, and which is movable in relation to a holding-down plate, so that a uniform clamping force acts on the printing plate over the entire length of the pressure pad.

Abstract: A bending press for making tubing from a substantially planar and longitudinally extending metal sheet has a support extending transversely generally parallel to the sheet vertically offset from the sheet, and a bender at one of the edges of the sheet and slidable transversely generally parallel to the sheet on the support. The bender has a pair of bending tools, a tie rod extending transversely in the direction adjacent the pair of tools, and an actuator braced transversely in the direction between the tie rod and the tools and extensible in the direction to tension the rod and press the tools against opposite faces of the sheets at the one edge to deform the one edge. A clamp is engageable between the bender and the support for releasably locking the bender to the support at any of a plurality of positions offset transversely therealong generally parallel to the sheet.

Abstract: Disclosed is an apparatus for forming a wire to include coil segments useable in a dynamoelectric machine, the apparatus including a plurality of forming structures simultaneously moveable along an axis into a coil segment forming configuration, with at least a number of the plurality of forming structures being configured to hold a wire, and at least one actuating device associated with at least a number of the plurality of forming structures and configured to simultaneously move the number of the plurality of forming structures into the coil segment forming configuration.

Abstract: A multifunction hydraulic head for use with forming and bending machines for sheet metal and/or metal profiles is equipped with carriages (15) that slide horizontally on guide and shift shafts. Each carriage (15) of the said machine is equipped with a bracket (17) that is integral with the respective carriage, the bracket supporting the interchangeable work assemblies (18, 19, 20, 21) which include a mobile matrix (22, 24, 26, 28) and a fixed pressing unit (23, 25, 27, 29); furthermore, the sheet metal (11) is inserted between the matrices and the pressing unit of the installed unit, to be spot processed by the said work assemblies in accordance with the desired shape.

Abstract: A repair apparatus for a vehicle has first and second telescoping pipes clamped to present a coupling part at elevated position and at a lateral position selected for restoring a damaged body portion of a vehicle. A leverage bar is secured to a receptacle joined by a hinge pin to each of the coupling parts of both telescoping pipes. A puller or one of popper heads of differing length is an attachment mounted by a hinge pin to the receptacle at spaced relation from the first hinge pin whereby a force excreted on the leverage bar simultaneously moves the quarter puller or popper head in a direction for restoring the damaged body portion of the vehicle. The position of the puller on the receptacle can be changed by removal of a hinge pin located between the puller and the leverage bar. The first telescoping pipes fit in a larger pipe welded to a plate that is either position under a tire or secured to the tire by a chain.

Abstract: A rescue tool includes an elongate body and a pair of opposing arms. The arms include a first arm and a second arm that extend outwardly from the body. At least one of the first arm and the second arm is slidably coupled to the body. Each of the arms includes an inner face and an outer face, wherein at least one of the arm inner and outer faces includes a plurality of teeth. At least one of the first arm outer face and the second arm outer face includes a plurality of grooves defined therein.

Abstract: A step-by-step bending machine has a first movable bending member, a second cooperating adjustably fixed bending member, and a third central positionally fixed bending member on an opposite side of a plate to be bent from the first and second members and positioned between the first and second members. The second and third members hold the plate while the first member bends the plate against the third central member. The second member is positionally adjustable to accommodate thickness of the plate. The first member is positioned by cooperating pairs of positioning rams and is moved against the plate by parallel main rams.

Abstract: A device for straightening a vehicle panel comprising a base which is attachable to a pulling device and at least three fingers pivotally connected to the base and movable from a retracted position designed for insertion into a drilled hole in a damaged panel. The fingers are movable to an extended position wherein a gripping portion extends generally perpendicular to the longitudinal pulling force. Another aspect comprises providing the gripping portion of at least one of the fingers with a substantially flat pulling surface in order to maximize the contact area between the finger and the damaged vehicle panel.

Abstract: A process for reducing residual tensile stresses in high nickel-chromium alloy nozzle safe-end welds of pressurized water reactor nuclear pressure vessels such as are found at the reactor vessel inlet and outlet nozzles and the pressurizes surge, spray, safety and relief nozzles. The process involves the application of radial compression on the outside surface of the nozzle's safe-end and/or connecting coolant piping, to reduce the outside diameter at the mid-point of the piping element to which the load is applied to between about 0.2% and about 3%. The radially compressive load applied by this process is imparted using a mechanical device that can be employed at the vessel manufacturer's facility or at a nuclear power plant after welding of the nozzle safe-end to the coolant piping or before either after plant commissioning of operation.

Abstract: A tool for straightening the frame surrounding a vehicle windshield, window or door opening includes a tool head defining a recess for receiving the pinchweld of the frame and having an outer bearing surface for engaging adjacent frame structure when the recess receives the pinchweld.

Abstract: A radius pull clamp for use in pulling vehicle door frames to straighten the same comprising first and second clamp plates which are clamped onto the door frame to assist in the straightening of the same.

Abstract: Vehicle repair clamps for grasping curved or non-linear surfaces. One embodiment comprises a hinged clamp comprising at least one jaw formed of a plurality of jaw sections that are hingedly connected and that may be adjusted to grasp surfaces of different angles. The clamp segments may be straight or arcuate. These embodiments facilitate attachment of the hinged jaws to portions of a damaged vehicle which form different angles and/or have various radii of curvature. Vehicle repair clamps comprising jaws with non-linear clamping portions.

Abstract: An apparatus and a method for accurately and repeatably positioning metallic parts comprised of variable length extrusions and shaped sheet metal in a modular die system that forms a joggle in the metallic parts. The apparatus of the present invention is comprised of a standard joggle die system that is currently in use in the art. The apparatus farther includes a movable back gage assembly that works in combination with the joggle die system to allow an operator to accurately position the workpiece between the joggle dies at a preselected position. The back gage assembly is movable in both the horizontal and vertical directions. The back gage assembly moves into a stored position away from the working area of the dies to permit the joggle to be formed in the workpiece. The back gage assembly can then move back into the working area to accurately position the next workpiece without the need for further adjustments.

Abstract: A rescue tool is for use with emergency extrications from a structure. The tool includes a shaft and a pair of arms coupled to the shaft. The shaft has an axis of symmetry, and the pair of opposing arms include a first arm and a second arm. At least one of the first arm and the second arm is slidably coupled to the shaft and is configured to move along the shaft in a direction that is substantially parallel to the shaft axis of symmetry. Each of the arms includes an inner face and an outer face. At least one of the arm inner and outer faces includes a plurality of teeth configured to contact the structure. At least one of the first arm and the second arm extends substantially perpendicularly to the shaft.

Abstract: A system and method for adjusting the orientation of trim tabs on a helicopter rotor blade includes a gage, a bender and a calibrator plate. The gage is secured to the calibrator plate which holds the gage in an orientation that simulates a rotor blade with trim tabs at zero degrees so that the gage can be zeroed. The gage is then removed and positioned on a rotor blade. Because the gage is supported on the blade by rollers, it is free to roll along the length of the blade and may thereby be positioned and repositioned quickly. Once in position, the bender is applied to the trim tabs adjacent to the gage and tightened using thumb screws. The handle of the bender allows the trim tabs to be adjusted while verifying that the amount of adjustment indicated by the gage dial indicator matches the preselected angle.

Abstract: A vehicle body frame puller attachment which includes a generally triangular main member having three sides with opposite side edges extending along each of the sides. The main member comprises a first side adapted for coupling to a chain to facilitate pulling on the main member using the chain, with a generally round aperture for freely passing a portion of a chain therethrough and a pair of chain slots for positioning a link of the chain in one of the chain slots such that an adjacent link in the chain is prevented from passing through the chain slot. A second side has four door hinge slots with each of the door hinge slots being elongate and having longitudinal axes extending substantially parallel to the side edges. A third side has a plurality of bolt slots for coupling to various bolt patterns used to attach door hinges to different vehicles.

Abstract: An automobile repair clamp for clamping onto an anchor point on a damaged structural component of an automobile. The clamp can be coupled to a pulling device for pulling the anchor point to straighten the structural component, and includes a pair of clamping jaws movable together into a clamping position and apart to respectively grip and release the anchor point. Also included is a locking mechanism coupled to the clamping jaws for selectively locking the jaws in the clamping position. The clamping jaws each include a rotatable gripper for gripping the anchor point and permitting adjustment of the angle of the clamping jaws in a first plane relative to the structural component to allow the clamp to be aligned with the direction of pull by the pulling device.

Abstract: The present invention relates to a gripping device for straightening work of a car body, with the aid of which gripping device the target of the car body being straightened is gripped and a straightening force is directed at said gripping device with the aid of a pull tool. The gripping device comprises a frame clamping member having gripping claws which can be brought around an edge of the target of the vehicle being repaired, in order to grip the vehicle, a rotatable fastening member pivotably mounted to the frame clamping member and a pull tool, such as a chain or equivalent, whereto the pull tool is fastened, whereby the rotatable fastening member is arranged to be rotatable relative to the frame clamping member of the gripping device, wherein the range of the angle of rotation of the rotatable frame fastening member is 0 to 180 °, such that opposite pull directions are achieved.

Abstract: The subject of the invention is a method for forming sheet metal strip, such as roofing sheets, in which the sheet strip (1) is moved forward and formed into undulated metal sheets by means of machine tools (2). The tooling (2) used in the method according to the invention consists of one or more presses (2) which are fitted with undulated pressing dies. The sheet metal strip (1) is gripped in place with the second press (3) and, when secured, the first press (22) is drawn along the length of the sheet metal strip and forms, by means of the press, an undulate profile (4) in the sheet metal strip.

Abstract: A metal forming machine includes a moveable central pillar, a slidable blade assembly mounted to the pillar for reciprocating movement therewith, and a fixed slide plate mounted to a stationary block secured to the pillar. A moveable or slideable blade holder of the blade assembly and having a ramped wall carries a blade or forming element mounted thereto. Respective wear plates mounted to the slide plate and blade holder contact each other during movement of the pillar. A blade or forming element secured to the slidable holder contacts metal to be formed or pierced. The stop block assembly associated with the slidable blade holder limits movement of the blade in a first direction such that continued force applied thereto during movement of the pillar causes movement of the blade or forming element in a second direction transverse to that of the first direction.

Abstract: A pipe bending apparatus is disclosed for bending pipe sections, particularly pipe sections of the type used in pipelines. The apparatus allows rapid clamping of the pipe section at reduced pressure via hydraulic fluid regeneration, while providing full hydraulic force for pipe section bending.

Abstract: An adjustable rod bending device includes a support table, a pivot base mounted on the support table, a pivot bracket pivotally mounted on the pivot base, and multiple juxtaposed rollers mounted in the pivot bracket to pivot therewith and each having an upper end adjustably mounted in the pivot bracket and a lower end formed with an arcuate pressing surface. The arcuate pressing surface of each of the rollers can be moved to press a corrective spinal rod supported by two support posts, thereby accurately bending the corrective spinal rod.

Abstract: A pulling tool for drawing the wheel of a motor vehicle into correct camber. The pulling tool has a base on which the wheel rests during adjustment of camber. A vertical support arm projects upwardly from the base, and supports a reel controlled by a ratchet. A strap paid out from the reel engages the wheel by a hook and pulls the top of the wheel towards the vertical support arm when the reel draws in the strap. A brace pivotally fixed to the vertical support arm includes two struts propped against the wheel, and prevents the vertical support arm from being drawn ineffectually towards the wheel. The base is bent to form an offset portion at that end to which the vertical support arm is connected, so that the novel tool may overlie a side rail of a conventional alignment rack without interference. The base and vertical support arm are separable. The top of the base has tread.

Abstract: A hand operated rebar bender and bent bar straightener which includes a base, a pair of spaced apart bending posts and a linearly reciprocal slide disposed between the posts and movable reciprocally in directions perpendicular to a line interconnecting the posts. The slide defines a first and second groove, both adapted to receive rebar, which move with the slide. The first groove is positioned so that straight rebar to be bent is originally tangent to the peripheries of the posts. The improvement of the present invention includes mechanical advantage which each movement of the handle moves the slide in increments thus allowing a person of lessor strength to comfortably bend heavy rebar such as #5. Also, a unique automatic or manual reversing mechanism is disclosed which allows the handle to be used in only one direction for straightening rebar as well as bending it.

Abstract: An apparatus for reshaping metal panels or the like of motor vehicles or automobiles, the apparatus comprising;a first internally threaded circular in perimeter nut, having two ends whereon one end thereof there is located a multiplicity of substantially circular grooves radially extending outward to the perimeter of said nut to grasp one side of a metal panel in use,a second internally threaded circular in perimeter nut, having two ends whereon one end thereof there is located a multiplicity of substantially circular grooves radially extending outward to the perimeter of said nut complimentary to said grooves radially extending outward to the perimeter of the first nut, to grasp another side of a metal panel in use,a hollow externally threaded shaft, having two ends, to receive the first and second nut, said hollow portion of said shaft to receive pulling means to be applied to said apparatus and to allow said nuts to rotate with said shaft about said pulling means in use,and two metal fingers projecting fro

Abstract: The apparatus disclosed is an attachment to be used in correcting misaligned rails in a unitized automobile chassis which includes a face plate to which is joined a three-piece wedge assembly. The apparatus allows as a result of wedging action, a sizable area of contact to be established between the apparatus and the interior of the misaligned rail so that when pulling force is applied to the apparatus, it is transferred to the rail through the broad area of contact thereby decreasing the chance of further damage to the rail during the repair process. Also disclosed is an embodiment featuring a two-piece wedge assembly. Methods for repairing a damaged rail using the wedge assemblies are also disclosed.

Abstract: A reciprocating bender for conduit which may make equal and opposite bends in a length of conduit. The reciprocating bender includes a bending deck, a traveling bending shoe, a rising bending shoe, a jack, and a stabilizer. The conduit is placed adjacent the traveling and rising bending shoes, and the stabilizer holds the conduit in place. The jack elevates the rising bending shoe above the deck, causing the conduit to make both equal and opposite bends about the two bending shoes.

Abstract: The apparatus disclosed is an attachment to be used in correcting misaligned rails in a unitized automobile chassis which includes a face plate to which is joined a three-piece wedge assembly. The apparatus allows as a result of wedging action, a sizable area of contact to be established between the apparatus and the interior of the misaligned rail so that when pulling force is applied to the apparatus, it is transferred to the rail through the broad area of contact thereby decreasing the chance of further damage to the rail during the repair process. Also disclosed is an embodiment featuring a two-piece wedge assembly. Methods for repairing a damaged rail using the wedge assemblies are also disclosed.

Abstract: A transport mechanism (28) is disclosed for use in a pipe bender (10) for bending pipe sections (12), particularly pipe sections having a diameter greater than one foot. First and second powered rollers (30, 32) are mounted within the pipe bender and driven by hydraulic motors to move the pipe section in a controlled manner through the pipe bender. A hold down roller (34) is pivoted against the pipe section to force the pipe section into engagement with the powered rollers to insure an adequately frictional engagement between the rollers and the pipe section to move the pipe section through the pipe bender.

Abstract: A lower die assembly used in a bending machine to form pre-punched three-dimensional structures has a plurality of plungers located within the V-shaped bending slot of the lower die. As the upper die presses against the pre-punched sheet, the sheet is pinched between an upper end surface of the plungers and the rounded end of the upper die so as to maintain the prescribed position of the sheet during bending. The lower die may include a pin stop which cooperates with positioning holes pre-punched in the sheet in order to establish the desired position of the sheet prior to bending.

Abstract: The present invention briefly relates to a tool for the synchronous operation of fastening a seal ring to a connector pipe, crimping of the flange-like portion resulting from the clamping, and forming of the end portion of the connector pipe. The tool comprises a calibration ring (11) into which the pipe end portion is inserted for calibration, a pull rod (1) extending centrally through the calibration ring (11) and a set of form chucks (5) around the pull rod (1). The form chucks (5) are prestressed against and in cooperation with a cone (2) provided at the pull rod end, so that when the pull rod (1) is displaced in such a way that the cone (2) moves toward the calibration ring (11), the form chucks (5) at first are being pressed radially outward by the cone (2) to engage the inner side of the connector pipe and then are pulling the connector pipe by means of the pull rod (1).

Abstract: This fixing clamp for straightening the bodywork of accident-damaged automobiles, and in particular the sheet metal seats for MacPherson suspension heads, is characterized by a pin provided with threaded axial end bores for receiving eyebolts, and with an intermediate step on which there rests a flange for supporting the sheet metal which is to be repositioned and/or straightened and which comprises a hole through which the pin shank is passed, a further drilled flange then being mounted on the pin, and being clamped against the sheet metal to be straightened by the pressure exerted by a sleeve which carries a positionable transverse fixing clip and is tightened by a nut screwed onto the pin.

Abstract: Apparatus for use in the repair of vehicles, including a horizontal beam that extends beneath the vehicle and having an anchor joined thereto for securing the beam to the underside of the vehicle for locating the horizontal beam in a fixed position relative to the vehicle, a vertical beam being fixed to the horizontal beam and having a bracket mounted in adjustable position thereon, a pulling chain extending through the bracket and having an end that is attached to the part of the vehicle to be repaired, the other end thereof being fixed to the vertical beam, an hydraulic cylinder being located for pivotal movement in the bracket and having a piston that is secured to the chain, and a control device that is operative to cause outward movement of the piston which exerts a pulling action on the chain, wherein the part to be repaired is pulled outwardly for the straightening thereof.

Abstract: A hand operated rebar bender and bent rebar straightener which includes a base, a pair of spaced apart bending posts and a linearly reciprocal slide disposed between the posts and movable reciprocally in directions perpendicular to a line interconnecting the posts. The slide defines a first and a second groove, both adapted to receive rebar, which move with the slide. The first groove is positioned so that straight bar to be bent is originally tangent to the peripheries of the posts. The slide is movable over a distance sufficient to move the first groove past the line interconnecting the posts so that the appropriate bend is formed in the rebar. The second groove is positioned so that in one of the limiting positions of the slide travel it is relatively further removed in the direction of slide travel from the bending posts than the first groove to permit the insertion of bent rebar therein.

Abstract: A tool for exerting tension through the automobile bumper shock absorber to pull frames and bodies into design position after a crash.

Abstract: A device for bending a metal bar especially suitable for bending metal bars used in reinforcing concrete structures. The device is hand operated and portable and includes a slide for bending the bars in a single horizontal plane which allows multiple, closely adjacent bends to be made in a single bar both on and off the construction site.

Abstract: A method of manufacturing a fan guard from a plate member wherein inward slits, each having at least a radial slit section are formed in a first section of the plate member located between a central section and a ring-like section radially outwardly spaced therefrom of the plate member such that the radial slit sections extend from the central section to the ring-like section in circumferentially spaced relation to each other. Radially outward slits, each having at least an arcuate slit section, are formed in a second section of the plate member located between the ring-like section and an outer peripheral section of the plate member such that the arcuate slit sections extend from the ring-like section to the outer peripheral section in circumferentially spaced relation to other. Portions each extending between the adjacent two radial slit sections are bent to form louvers.

Abstract: A pipe bending machine (10) is described which incorporates a bending die (14) which supports coated pipe during bending without damaging the coating. In one embodiment, the bending die (14) employs a conventional die (30) with a plurality of longitudinal rods (40, 42, 44) spaced from the inner surface of the die (30) and in pipe confronting relation. When the pipe is urged against the bending die in the machine, the rods precompress the material thereunder for transmitting the bending forces. The rods (40, 42, 44) are spaced a sufficient distance from each other in the transverse direction about the inner surface of the die to permit the material to flow outward therebetween to reduce the stresses in the coating. In a second embodiment, a plurality of transversely extending rings (62, 64 66) are positioned on the inner surface of a conventional die (30) which further act to support bending forces without damage to the coating.