Abstract: A wire shaping tool and method of using the tool to reshape wire, including the discrete sections of wire in a wire mesh panel, is provided. The tool includes a pair of levers joined at a fulcrum positioned closer to one end of the levers, a pair of jaws on one side of the fulcrum, and a pair of handles on the other side. The first jaw can include an elongate body with a concave surface having a pair of opposing lateral edges. The second jaw can include a complementary convex surface configured to converge toward contacting the concave surface of the first jaw. The concave and complementary convex surfaces can transform the shape of a wire positioned between the jaws when they are actuated. The second jaw can include a third shaping component that allows for the simultaneous reshaping of two adjacent wire sections in a wire mesh panel.

Abstract: Surgical methods and devices are provided for bending spinal rods. In one embodiment, a handheld tool is provided having an elongate shaft with a lumen formed therein that is configured to accommodate a spinal rod. The tool can include an opening in a proximal end that is configured to permit the loading of the spinal rod into the lumen, and a plurality of openings spaced along a longitudinal axis thereof that intersect the lumen for allowing a user to view and/or grasp a rod extending through the rod-receiving lumen and positioned within one of the plurality of openings. The tool can further be configured to permit a bent spinal rod to be received within the lumen. For example, the tool can include a channel in a lower surface thereof that allows a rod to exit the lumen and to extend laterally away from the tool.

Abstract: A spinal implant system includes a spinal implant template having a base connected to vertebral tissue and a member movable relative to the base. The member includes a sensor configured to identify coordinates of one or more bone fasteners connected with the vertebral tissue. An implant bending device includes work surfaces engageable with a spinal implant to manipulate the spinal implant to a selected implant configuration based on the coordinates. Surgical instruments, spinal constructs, implants and methods are disclosed.

Abstract: An improved corner bead clip is provided for use in attaching corner beads to structural steel members where fireproofing material can be applied to the corner beads. The clip includes jaws that can attach to the steel members with a friction fit, and a body attached to the jaws where the body has notches for receiving longitudinal wires of the corner beads to hold them in place.

Abstract: A universal compact compression tool includes a vise assembly having different sets of jaws. The different sets of jaws are for holding different connectors during installation on a cable. A shaft on the tool is mounted to move between advanced and retracted positions with respect to the vise assembly. On the shaft, a plunger is mounted to move between first and second positions. In the first position of the plunger, the plunger is advanced on the shaft. In the second position of the plunger, the plunger is retracted on the shaft. The user sets the plunger in either the first or the second position depending on the type of connector to be installed on the cable. Once selected, and with the connector in the vise assembly, the user closes a lever of the tool to move the shaft to the advanced position, thereby applying the connector to the cable.

Abstract: A firing assembly for a surgical stapler includes a shell, a pressure chamber arranged in the shell to accommodates fluid, an ejector rod located below the shell to provide an actuated force and press the fluid in the pressure chamber, a number of piston holes communicating with the pressure chamber, a number of pistons received in the piston holes and a number of firing portions actuated by the pistons. The firing action of the stapler is gentle and the stapling effect for the anastomosed tissues is uniform.

Abstract: The present invention provides a mandrel tool and method for more efficiently and consistently forming various shapes of material. In one embodiment of the invention, a pair of pliers having mandrel jaws that are shaped with a uniform cross sectional area throughout a length of the mandrel jaw is used to replace the traditional tapered mandrel. Because the mandrel jaws have a uniform cross sectional area, the wire, for example, can be wrapped multiple times around the mandrel jaw when it is desired to produce multiples of the same shape. For added versatility, the pliers can have opposing mandrel jaws, with different size cross sectional area.

Abstract: The present invention provides a mandrel tool and method for more efficiently and consistently forming various shapes of material. In one embodiment of the invention, a pair of pliers having mandrel jaws that are shaped with a uniform cross sectional area throughout a length of the mandrel jaw is used to replace the traditional tapered mandrel. Because the mandrel jaws have a uniform cross sectional area, the wire, for example, can be wrapped multiple times around the mandrel jaw when it is desired to produce multiples of the same shape. For added versatility, the pliers can have opposing mandrel jaws, with different size cross sectional area.

Abstract: The present invention relates to a tool for adhering an orthodontic bracket, comprising: a pair of bracket holding portions for holding a bracket to be bonded to teeth while approaching or separating from each other; and a pair of handle portions connected to the pair of bracket holding portions, for controlling the bracket holding portions to allow the same to approach or separate from each other, wherein a scale for measuring the height of a bracket for the end of teeth is formed in at least any one of the pair of bracket holding portions. Therefore, an operation is convenient, measurement is easy and measurement time can be reduced since the tool has a simple and uncomplicated structure. In addition, it is possible to improve the effectiveness of orthodontic treatment since a bracket can be bonded by precisely setting the height of the bracket.

Abstract: A highly reliable rectifying device of a vehicle alternator capable of improving the vibration resistance of a diode. A connection lead 33d of a diode 33 included in a rectifying device includes a linear part 33f extended in parallel from a metallic base 33b, and a bent part 33g bent 90° or more substantially like an arc from the linear part 33f. The bending radius R of the bent part 33g is set to a value larger than a separation distance w in a horizontal direction between the terminal of the linear part 33f and the distal part of the connection lead 33d.

Abstract: A device (10, 10?) and method for crimping an implant (20), which can assume either a compressed state or an expanded state, at least over a portion of the length thereof. An crimping device is attained according to the invention in that a hollow-cylindrical and/or hollow-conical, preferably braided wire netting is provided, in the inner volume (14, 14?) of which the implant (20) in the expanded state can be placed, at least via a section thereof, wherein, upon application of a tensile force on at least one end in the longitudinal direction, and/or upon application of a compressive force in the radial direction, the wire netting simultaneous undergoes extension and a reduction of the inner diameter (d, d?) such that the implant (20) can be transformed, at least along a section thereof, from the expanded state into the compressed state.

Abstract: The present disclosure describes various embodiments of devices for preparing cables, such as devices for pulling back the shield on an end portion of a coaxial cable to prepare the end portion for attachment to a connector. A coaxial cable, with an exposed central conductor, a dielectric insulator, and a shield (e.g., a metallic shield) can be inserted into a bore of a shield pull-back device configured in accordance with the present disclosure. As the cable is inserted into the bore, one or more gripping members can engage the cable shield and pull it back evenly without damaging the central conductor or the dielectric insulator.

Abstract: A plier tool for crimping electrical connectors to wires includes two plier handles that are pivotally connected together by a pivotal coupling that allows for rotation of the handles, towards and away from one another. The two plier handles each have gripping portions that are graspable by a user to rotate the plier handles about the axis of rotation. A crimping die is located on each plier handle, at an end opposite of the gripping portion thereof, and rotation of the plier handles causes the crimping dies to be moved towards and away from one another between engaging and non-engaging positions. The crimping die, together, define an opening that is configured to receive an electrical connector in a manner that positions the electrical connector in an endwise direction that is generally perpendicular to the axis of rotation.

Abstract: A rod bender includes an elongated body having a proximal end and a distal end and extending along a longitudinal axis; a first arm having a proximal end attached to the distal end of the body and extending transversely therefrom and having a longitudinal axis offset from the longitudinal axis of the body; and a second arm having a proximal end attached to the distal end of the body and extending transversely therefrom and having a longitudinal axis offset from the longitudinal axis of the body and offset from the longitudinal axis of the first arm, said second arm including a channel positioned toward a distal end of said second arm, said channel having a longitudinal axis substantially perpendicular to the longitudinal axis of the second arm.

Abstract: A rebar bending device for bending rebar. The device features a base plate and a rotator plate pivotally attached to the top of the base plate. A top plate is attached atop the rotator plate. A first pin extends from the base plate through the rotator plate and through the top plate. The rotator plate can rotate about the first pin with respect to the base plate and top plate. An arc-shaped slots are disposed in the top plate, which is adapted to receive a dial pin that is anchored to the rotator plate. A dial is marked atop the top plate (the second marker plate). A second pin is disposed on the top of the top plate near the first pin and a third pin is disposed on the top of the rotator plate.

Abstract: A fence clip installation tool includes a pair of handles pivotally joined to respective jaws pivotally maintained between two plates to enable the jaws to counter-rotate in unison. Clips of a compatible design may then be nested between the jaws and compressed or deformed about objects upon closure of the handles.

Abstract: Apparatus and methods for filament crimping. In one embodiment, the apparatus comprises a body and a filament crimp element. The filament crimp element comprises a first set of cavities disposed at a spacing which creates a first set of features and a second set of cavities disposed at a spacing which creates a second set of features. The first and second set cavities are substantially opposite one another. The first set of features are adapted to be placed at least partially within the second set of cavities and the second set of features are adapted to be placed at least partially within the first set of cavities. Methods and apparatus for the manufacture of the device are also disclosed. In addition, methods for automated placement and manufacture of assemblies using the crimp elements are also disclosed.

Abstract: In order to simplify leftover wire (3) at the tying machines used in pulp production, a device is used that has an inlet guide (2) for the leftover wire (3) and a bending device (4) to bend the leftover wire running through continuously into a helical or spiral shape.

Abstract: A pliers for forming orthodontic wires has opposing beaks with complementary wire-forming surfaces that include interfering portions. A hinge mechanism enables the beaks to open and close by rotating about an axis, and also allows a range of axial motion between the beaks sufficient to prevent interference between the wire-forming surfaces as the beaks are closed. By preventing such interference, novel over-bending capabilities can be achieved to form useful bending of low spring rate wire. A spring, such as a Belleville washer, exerts a biasing force parallel to the hinge axis to maintain alignment of the beaks, but allows the required range of axial motion between the beaks to prevent interference.

Abstract: A tool for fastening fencing material to a post with a staple. The tool includes a base plate; first and second handles; first and second crimping arms, and a cam operatively engaged with the first handle. A slide is operatively engaged with the cam. The first and second handles and the first and second crimping arms are pivotally interconnected and attached to the base plate so that when the first and second handles are pivoted towards one another from an open position, the cam advances the slide, which advances the staple so that the crimping arms may crimp the staple to the fence post. A method for attaching the staple to a fence post is also described and claimed. An inventive staple is also disclosed.

Abstract: This invention relates to a hand tool capable of clipping wires of different diameters. The hand tool of the present invention comprises a main body, at least one first clipping piece, at least one second clipping piece, and at least one elastic element. The at least one first clipping piece is pivoted to the main body, and the at least one first clipping piece forms a first clipping area. The at least one second clipping piece, which is stacked next to the at least one first clipping piece, is pivoted to the main body, and the at least one second clipping piece forms a second clipping area that is different from the first clipping area. The at least one elastic element provides clipping force to the at least one first clipping piece. By the above structure, a wire can be clipped at the first clipping area or at the second clipping area.

Abstract: end; a first steel pin for pivotally connecting the rotator plate to the base plate, a handle disposed on the second end of the rotator plate; a second measurement plate fixedly attached to the first measurement plate and the rotator plate; a second steel pin disposed on the second measurement plate; a third steel pin disposed on the rotator plate; wherein the rebar can be positioned in between the first, second, and third steel pins; wherein a user can bend the rebar by rotating the rotator plate via the handle.

Abstract: An instrument for debonding an orthodontic bracket from a tooth surface includes first and second plier portions coupled for relative pivotal movement. A lever arm pivotally movable relative to the first and second plier portions has a tooth engaging member on a first end. In one embodiment, the tooth engaging member is positioned on the lever arm for movement between a jaw of the plier portions and the tooth surface when a second end of the lever arm is pivotally manipulated in a direction toward a handle of the plier portions. In another embodiment, at least part of at least one plier portion is flexible relative to the lever arm such that the lever arm moves the tooth engaging member relative to a jaw of the plier portions after the bracket engaging portions are engaged with the orthodontic bracket and the handles and lever arm pivotally manipulated toward one another.

Abstract: An apparatus for bending wire of a wire fence so as to increase the tension thereof is provided. The apparatus includes a first member that has a female portion. The female portion has a recess surface, that may be flat, located between a first projection and a second projection. The recess surface, first projection and second projection at least partially define a recess. A second member is in pivotable engagement with the first member. The second member has a male portion with a tip. The tip of the male portion may be configured to move into and out of the recess of the first member so as to bend wire of a wire fence therein.

Abstract: A crimper for spiral-binding coil comprises at least one, and preferably multiple, crimping assemblies including crimping elements that move generally parallel to each other to preferably cut, bend and/or reform an end of the coil for retaining the coil in the book or pamphlet. The movement of the crimping elements may be rotational in parallel planes, or translational in parallel lines. Preferably, multiple sets of crimping elements may be interchanged easily and without tools, for example, by being located on rotating members and are circumferentially spaced apart so that one set is used at a time. For each diameter of coil filament within the range of coil diameters for which a particular crimping set is designed, a member of the crimping assembly is adjusted to change the size/dimension(s) of the space into which the newly-cut end of the coil is forced, preferably adjusting that space to be slightly smaller than the diameter of the coil filament.

Abstract: A straightening tool for straightening an elongate angled member of an angled tissue cutting instrument in which the elongate angled member has a proximal length portion and an initial bend connecting the proximal length portion to a distal length portion extending from the bend to a distal end. The straightening tool comprises a positioning block attached to a handle, an unbending channel in the positioning block configured to effect straightening of the elongate angled member and a guide template corresponding to the unbending channel. The guide template comprises a guide slot having a longitudinal profile corresponding to the longitudinal profile of a forward aspect of the elongate angled member extending from the distal end proximally of the bend.

Abstract: A Brick Mason Wire Bend tool for use of adjusting the tie wire in masonry construction has the form of a bar having an intermediate bent radius section and opposite end portions which are displaced out of the plane of the intermediate section at an acute angle. The working end portion has four jaws and four slots perpendicular to the longitudinal axis. The opposite end is curved and beveled and coated with a poly-carbonate coating. At the base of the central radius on opposite sides are two holes of equal distance and diameter. It is hand tooled, cold bend construction and galvanized.

Abstract: A method of manufacturing a stator winding includes a twisting step of U-shaped conductor segments having a pair of straight portions by moving the straight portions in the circumferential direction while restraining the turn portions of the U-shaped conductor segments in the axial direction by a pressing tool. After the previously twisted U-shaped conductor segments are inserted into slots of a stator core, the straight portions are bent in the circumferential direction. The pressing tool is constituted of a stationary top plate that has recesses into which the straight portions are inserted and a movable top plate that is movable to close the recesses after the straight portions are inserted in the recesses.

Abstract: A closure tool (10, 40) for closing heavy-duty clips (11) as used for example in the building trade and in agriculture has a body (13), a pair of handles (14) mounted on the body (13) on pivots (15) and a pair of anvils (18, 20) movable relative to each other from a spaced position to closure position in response to relative movement of the handles (14) and the body (13). A moving member (17) is engaged by the handles (14) and is movable therewith, and one of the anvils (18) is connected to and movable with the moving member (17). The handles (14) may have spigots (44) engaged in a slot (43) in a cylindrical moving member (17) in a barrel part (41) of the body (13), or each handle (14) may have a quadrant shaped first gear engaging a rack second gear moving member slidably mounted in the body.

Abstract: The Brick Mason Wire Bend is a revolutionary tool designed to bend all types/styles of tie wires that are commonly used in today's construction industry. It eliminates and simplifies the complicated method of proper wire bends. This tool will prove to be indispensable in that it is the first tool of its kind to effectively address and resolve the problems (when the tie in for the wire needs bending due to the height variation of the brick or block) that plague most brick layers. With this tool the brick layer can easily bend the wire to the desired position to make of his/her tie in the wall.

Abstract: The present invention relates to a wire termination system for terminating wires in at least one of a plurality of terminal connectors removably affixed to each other in a terminal connector strip that includes a body having a connector positioning cavity therein for receiving the terminal connector strip; a pushing element within the positioning cavity for advancing the terminal connector strip within the positioning cavity; a crimping element for receiving at least one of the plurality of terminal connectors from the pushing element; a support within the positioning cavity for positioning at least one of the plurality of terminal connectors within the crimping element; and a handle moveably attached to the crimping element and the body, wherein the handle and the crimping element are configured to terminate the wires within at least one of the plurality of terminal connectors and to separate the terminal connector from the terminal connector strip.

Abstract: An improved type of joining pliers, particularly one that presses and joins an object (coating terminal) to a conductive wire and can make correction without being deviated or displaced during a compressing and joining process, comprising a left handle, a right handle that is pivoted to the left handle so the two handles can be opened or folded to each other, an opening mold that is movably pivoted to the left handle, and a slide block that is movably pivoted to the right handle and can be embedded in the opening mold; by the mobility of the opening mold and the slide block that are movably pivoted to each other, the assembling position of the mobile opening mold and the slide block can be automatically corrected when the left and right handles are folded.

Abstract: A tool for bending ceiling support rods. The tool includes a first lever and a second lever. The first lever has a first handle portion and an associated first jaw portion, the first jaw portion has a contoured surface. The second lever has a second handle portion and an associated second jaw portion, the second jaw portion has an edge. Means are provided for pivotally mounting the first lever with the second lever, wherein the first jaw portion and the second jaw portion are opposite each other and are movable relative to each other when the first and second handle portions are compressed. The edge of the second jaw portion is movable toward the contoured surface of the first jaw portion when the first and second handle portions are compressed toward each other.

Abstract: A Robertson driver is disclosed which has a slot (10) in the end of the tip (12) that can fit over a wire, enabling the user to manipulate the wire.

Abstract: A coaxial cable installation tool useful for folding back an exposed portion of grounded shielding on the end of a coaxial cable in preparation for the attachment of the coaxial cable to a coaxial cable connector. In a preferred embodiment, the installation tool includes a handle portion that is adapted to be comfortably grasped by an installer, and a flaring tool recessed within one end of the handle portion. The flaring tool includes a spring-loaded cylindrical flaring rod slidably mounted within a coaxial tubular housing. The flaring rod has a cylindrical receptacle in the leading end thereof, the diameter of the cylindrical receptacle being dimensioned to receive the portion of the coaxial cable underlying the grounded shielding therewithin. The inner diameter of the receptacle permits the snug insertion of a variety of coaxial cable connectors, such as, for example, F-type connectors, thereinto.

Abstract: Disclosed are orthodontic treatment pliers effective at increasing efficiency of treatment work in orthodontic treatment and at lessening the pain the patient can be provided. A pair of pinching portions having a necessary length which are bent in parallel at a required angle toward a plane of locus of swing using a hinge as a fulcrum are formed integrally with the tips of a pair of jaws constructing the pliers. One of the pinching portions has an almost L-letter shape in cross section and the other pinching portion has a shape which can engage with the L-letter shape of the pinching portion. With the configuration, by operating the pliers in the direction of pinching and closing a projected wire portion with the pinching portions, the projected wire portion can be bent so as to hold a tooth.

Abstract: A tool for bending ceiling support rods. The tool includes a first lever and a second lever. The first lever has a first handle portion and an associated first jaw portion, the first jaw portion has a contoured surface. The second lever has a second handle portion and an associated second jaw portion, the second jaw portion has an edge. Means are provided for pivotally mounting the first lever with the second lever, wherein the first jaw portion and the second jaw portion are opposite each other and are movable relative to each other when the first and second handle portions are compressed. The edge of the second jaw portion is movable toward the contoured surface of the first jaw portion when the first and second handle portions are compressed toward each other.

Abstract: An orthodontic instrument includes a pair of complementary mating die movable together and apart for forming a Z-shaped bend in an orthodontic arch wire. A Z-shaped bend in an orthodontic arch wire is utilized in conjunction with an orthodontic appliance for applying force to a tooth through a bracket thereon to change its inclination and/or rotation respecting the long axis of the tooth, e.g., to upright an angulated tooth or derotate a rotated tooth. Different embodiments of the instrument are utilized in a sideways or an end-on orientation relative to the arch wire to form a Z-bend therein in situ in a patient's mouth, or may operate on the arch wire outside the mouth.

Abstract: The object of the present invention is to provide a method and an apparatus for manufacturing a stator to improve accuracy in inserting conductor segments (3, 31, 32) into slots (2). The apparatus according to the present invention comprises a conductor holder (21, 22) holding the conductor segments (3, 31, 32) and an axial-moving-mechanisms (214) moving the conductor holder (21, 22) relative to a stator core (1) in an axial direction. The conductor holder (21, 22) holds straight portions (31b, 31c, 32b, 32c) of the conductor segments (3, 31, 32) to be inserted into the slots (2) from one end of the stator core (1).

Abstract: A rod bending system includes a handle that holds a template rod and an implant rod in close proximity and in a fixed orientation with respect to one another. The system further includes one or more of the following: (a) a rod bender for bending the implant rod, the rod bender including a central pivot that is dimensioned and contoured to fit between the two rods; (b) a guide that slideably attaches to the template rod and clips onto the implant rod, the guide sliding along regions of the rods that correspond and stopping at regions that diverge; and (c) a stand that includes a holder which retains the handle at a desired orientation and a pedestal that elevates the handle above a supporting surface.

Abstract: A bending tool for bending rods or like items, and including two handles and three bending posts. Two of the posts move with the handle, and the third post is a center post which is selectively rotatable to positions for determining the bend in the item. A pin interconnects the handle and the center post to hold the latter in its selected position during the bending process.

Abstract: A method and apparatus for mounting, inspecting, and adjusting probe card needles used during testing of fabricated circuits. A build wafer, comprised of build and scrub target patterns, is used to mount and re-work probe needle assemblies onto a probe card. Each build target is composed of a hard material that is resistant to probe needle scratching, and is offset a preset distance from the position of the bonding pads on the actual wafer to be tested. Each scrub target is composed of a soft material that is easily disturbed by the probe needle's scrubbing action. By counting the number of lines broken or cut by a probe needle's scrub mark, the approximate length and width of the scrub mark may be ascertained. An adjustment tool is designed to fit snugly around the untapered, thickest portion of the probe needle. The tool is rotated along the axis of the probe needle shaft, allowing the technician to "tweak" the probe needle either up or down.

Abstract: A single device dual action lead forming tool uses standard long nose pliers as the basis of its construction. A set of lead forming elements is incorporated into each plier jaw element. Each set contains forming tooth and forming receptacle elements positioned adjacent to one another in a predetermined manner. The elements of one set are arranged within one jaw element in a reverse order relative to the arrangement of lead forming elements in the other jaw element. When the jaw elements are closed, pairs of like positioned forming tooth and receptacle elements of both sets cooperate together to form both the inner and other leads of a single electronic component in a single operation.

Abstract: An apparatus and method for tightening and crimping a surgical wire used for orthopedic purposes. The apparatus of this invention includes a pair of operating handles which are biased apart and which operate a pair of opposed jaws to which they are connected. Disposed on opposite sides of the operating handles are a pair of capstans. The jaws are adapted to hold a crimp member therein without deforming it while opposite ends of a length of wire are passed through the crimping member in opposite directions. Each end of the wire is wrapped about an associated capstan. A ratchet handle simultaneously rotates both capstans to wrap the opposite ends of the wire. Once the desired traction force has been achieved, the jaws are further activated to crimp the crimp member. A ring-shaped crimp member is also disclosed which has a central opening extending along the axis thereof and two parallel channels, one channel being disposed on either side of the central opening.

Abstract: A tool for forming a controlled bend in a wire to be positioned around a terminal screw or post. The tool has a wire bending head at one end of a shaft which has a handle at the opposite end, the wire bending head including a post coaxial with the shaft and an arcuate flange outwardly of the shaft. A second flange is spaced from the first flange, and the two flanges provide stops. The end of a wire is placed adjacent to the post and is inserted between the flanges; in an alternate embodiment, there is a single flange with a transverse opening in which the end of the wire is placed. The tool is rotated while the wire is held, or the wire may be moved with or without tool rotation, so that the wire is bent around the post. Bending continues until the wire engages a second stop, which is located to position the two legs of the bent wire in a desired relative position, which may be substantially parallel.

Abstract: An apparatus for bending a band-shaped work, the apparatus including a stationary cylinder having at least a pair of slits on diametrically opposite sides thereof, the slits providing a passageway in which the work is inserted through the slits, a rotary sleeve accepting the stationary cylinder with a gap interposed therebetween, the rotary sleeve having a first opening and a second opening on diametrically opposite sides thereof, a first driving means for feeding the work passed through the passageway in the stationary cylinder and the first and second openings of the rotary sleeve, and a second driving means for rotating the rotary sleeve by a predetermined amount while the movement of the work is stopped so as to bend the work between the stationary cylinder and the rotary sleeve.

Abstract: A cam action surgical rod bender includes a locking assembly which locks a bending knob in place. The rod bender includes a knee lever configuration for keeping the bending knob still, wherein a pin is moved downwardly along a channelled cam surface to provide stability when locking the bending knob in place against the round support plate at the hinge portion of the rod bender.

Abstract: For tying a compressed bale tending to expand primarily along a major axis, a bale tie made preferably from steel wire or alternatively from steel strap is bent to form two marcelled portions, which are characterized by sinusoidal undulations, which are oriented so as to be generally parallel to the major axis, and along which the tie can straighten to absorb tensile forces. A joint is formed at the opposite ends of the tie. Where bent to form the marcelled portions, the tie has an ultimate strength less than the ultimate strength of an undeformed portion of the tie but more than the ultimate strength of the joint. An apparatus for forming a wire with a marcelled portion comprises upper rolls and lower rolls, which are rotatably mounted and respectively on an upper block and a lower block. The upper block is pivotally mounted upon the lower block.

Abstract: The pliers in overall structure resemble conventional orthodontic pliers, but have specialized jaw members adapted to effectuate necessary gingivally directed bends in the distal ends of the arch wire. With reference to an imaginary plane along which the jaw members open and close, a first jaw member projects transversely from this plane and has a free end provided with an angulated, profile facing the longitudinal axis of the pliers. A second jaw member projects transversely to the plane, and has a free end provided with a concave, preferably angulated profile adapted to mate intimately with the convex profile when the jaws are in the closed position. Each of the profiles includes an inner surface closer to the pivot joint of the pliers, oriented perpendicularly to the plane and parallel to the pliers longitudinal axis, and an outer surface farther from the pivot, oriented perpendicularly to the plane and angled obliquely to the longitudinal axis.

Abstract: A method and apparatus for imparting a reproducible curve formation to a wire stylet. The stylet former comprises a substantially cylindrical forming body having a conically tapered end. A semi-rigid forming arm is coupled to an axle extending axially outward from the tapered end of the forming body. The tapered end has a plurality of circumferential grooves of different radii disposed therein, for receiving a stylet to be formed. The forming arm is depressed over a stylet engaged in one of the forming grooves, compressing the stylet against a portion of the circumference of the forming body. At the same time, the stylet is withdrawn while pressure is maintained to keep the stylet in the forming groove. The angle with which the stylet is withdrawn from the stylet former can be varied to produce various right- and left-hand spiral curves in the stylet. The radius of curvature of the resulting stylet formation is determined by the radius of the groove in which the stylet is engaged.