Abstract: An anchor nut device is disclosed for attachment to a structure, the device defining a threaded bore for the reception therein of a corresponding member. The device includes an anchor nut which is fabricated from a first material, the nut defining the bore and a plurality of radially extending ears. A base plate is fabricated from a second material, the plate having a first and a second face, the first face cooperating with the plurality of ears. The second face of the plate defines a plurality of dimples for facilitating welding of the plate to the structure. A plurality of arms extend from the plate, such that each ear of the plurality of ears is disposed between a corresponding arm of the plurality of arms and the first face of the plate for capturing the nut relative to the plate. Also, a stop extends from the anchor nut, the stop being disposed between adjacent ears for controlling rotational movement of the anchor nut relative to the plate.

Abstract: A spin weld pin according the principles of the present invention can be rotated at a high speed relative to two or more framing members by a torque transmitting device. An axial force is applied to the pin as it rotates so that the pin contacts the framing members and generates frictional heat. The heat generated causes the framing members to enter a molten state and allows the pin to penetrate therethrough. Rotation of the pin is ceased and as the pin and framing members cool, a bond is formed that joins the framing members and pin together.

Abstract: A resistance weld pin for connecting batts of insulation to the interior of ducts is disclosed, the pin having superior aerodynamic properties which minimize turbulence in the duct flow stream and reduce the tendency of increments of the insulation surrounding the pin will become separated from the main body of the bott when introduced into the air stream. The pin assembly comprises a washer and a pin component projecting through the washer. The upper surface of the washer includes an annular depressed trough surrounding the head of the pin. Preferably the head is disposed within a central depression in the washer, the upper surface of the head forming a contact surface for the applying electrode and lying in a plane above an annular platform extending between the trough and the depression.

Abstract: A joining assembly for mounting a fastening element of thermoplastic material to an external surface of a structural member of thermoplastic material. The fastening element and the structural member are provided with a joining projection and, respectively, a joining extension have matingly shaped joining surfaces which are integrally joined to each other by melting.

Abstract: The present invention provides novel structures for spin weld assemblies and a method for forming same. The spin weld assemblies are formed by attaching a fastener to a plastic insert which is then attached to a plastic workpiece. The fastener can take the form of many different structures, preferably a stud or a nut. The fastener is formed with a drive for driving the fastener into a bore of the plastic insert having first and second ends. Self-tapping threads on the fastener engage the fastener with the plastic insert when the fastener is driven into the bore of the insert. The insert, having the fastener threadedly engaged thereto, is then rotated and generally axially displaced into an opening of the plastic workpiece, thereby spin welding the insert to the workpiece. The first end of the insert provides proper alignment for the insert to be spin welded into the opening as the diameter of the first end is smaller than that of the opening.

Abstract: A nut plug assembly for use with structural poles includes a nut, bolt and washer attached to a nut secured to the pole. The plug assembly remains within the pole nut throughout the galvanizing process and would be readily removed by the user just prior to having a need to use the pole nut for attachment of an accessory structure. As the nut plug assembly would remain in the nut after the galvanizing process, rust appearance would be minimized as the threads of the nut would not be exposed. It is only upon the user needing access to that particular nut that the plug assembly would be removed and an accessory component would be immediately inserted into the desired nut.

Abstract: The subject matter of the invention relates to an assembly system with fastening stud as well as to a method of forming an assembly system. The assembly system comprises a fastening stud (1) and an assembly part (20) mounted on the fastening stud (1). The assembly part (20) has a receiving space (21) for receiving the fastening stud (1). When the assembly part (20) has been mounted, the inner surfaces of the receiving space (21) and the outer surface of the fastening stud (1) are frictionally connected to one another. The fastening stud (1) has a frontal opening. The fastening stud (1) is radially resilient at least in the region of the opening.

Abstract: A nut/clip assembly has a nut and a clip. The nut has an internally threaded cylindrical portion of sufficient wall thickness that the internal threads are fully-formed. The cylindrical portion of the nut is formed by extrusion. The clip is U-shaped and has spaced apart legs. One leg of the clip is rigidly secured to the cylindrical portion of the nut by welding. The other leg of the clip extends across the cylindrical portion of the nut and has a bolt-receiving hole aligned with the internal threads. The cylindrical portion of the nut is of greater thickness than the clip. The clip is made of a carbon steel alloy and the nut is made of a carbon steel alloy of lesser carbon content than the clip.

Abstract: A fixed member is fixed to a rotation shaft. The rotation member is rotatably fitted to the rotation shaft. In a state in which one of end surfaces of the rotation shaft abuts against one of side surfaces of the fixed member, the rotation shaft and the fixed member are welded and fixed to each other by high density energy beams radiated from a direction of the other side surface of the fixed member.

Abstract: A securing fixture for a screw or a nut includes a holding device for holding the head of the screw or the nut and is provided with a projection which comprises a parting location which can be parted by means of a chisel. The projection also has a projection end which can be welded or adhesively bonded.

Abstract: To form a welded joint between a fastening means (1) and a structure (2), a fastening means (1) with a holder (3) and a connecting element (4) is proposed. The holder (3) essentially consists of an electrically insulating material. The connecting element (4) consists of a substantially electrically conductive material. The holder (3) substantially surrounds the connecting element (4). The connecting element (4) has a contact face (5) located inside the holder (3). The holder (3) has a through-orifice (6) at least partially overlapping the contact face (5). A contact piece (7) of an electrically operated welding device is introduced through the through-orifice (6).

Abstract: A pair of high-quality material threaded nuts are secured to a trench plate for subsequent placement of a hoist ring thereto.

Abstract: A weld stud comprises a leg portion having a root that is adapted to be welded to a workpiece and a resilient engagement pawl portion integrally formed at least on one side of the leg portion. The resilient engagement pawl portion extends diagonally outwardly from the end of the leg portion toward the root and is capable of bending radially inwardly with respect to the leg portion. On the outside of a lower end portion of the leg portion, an engagement step which is an inward recess formed like a step is provided. Although it is not always necessary to make the weld stud from synthetic resin, it is preferable that the entire weld stud is made of synthetic resin and is molded as a one-piece article since its use is predominantly for synthetic resin members.

Abstract: Improved welding stud (20) includes a generally cylindrical body (34). A first series of annular rings (42) are disposed on a first end portion (18) of the cylindrical body (34). A second series of annular rings (44) are disposed on a second end portion (26) of the cylindrical body (34). The rings (42, 44) are asymmetrical and have reverse configurations. Thus, the annular rings (42) on one end portion of the stud are a mirror image of the rings (44) on the opposite end portion of the stud. Either end of the stud (20) may be stud welded to a base member (14) using the drawn arm short cycle or gas arc stud welding processes. A cap (24) may then be press fitted onto the opposite end of the stud to secure insulation.

Abstract: A generally trumpet-shaped fastener includes a generally circular flange portion flared outwardly from an elongated pin portion. The fastener is hollow and open at the flange portion and the opposite end of the pin portion, thus allowing air to escape during securement of the fastener to an attachment member that is to be held in place on a base member by the fastener. In addition, a number of discrete ridges or other protuberances are formed on the outer side of the flange portion in order to enhance the engagement and securement of the flange portion of the fastener to the underside of an attachment member, either by integrally molding or by ultrasonic welding.

Abstract: For removing a cap (2) made of a plastic material, which is disposed on a shank (9) of a metal stud, it is proposed that the cap has tool engagement regions (15a, 15b), through which a substantially tangentially directed deformation force (F) is introduced by means of jaws (20, 21) into the cap (2) so that at least one portion (14a, 14b, 14c), which extends at least over part of the axial length of the shank (9) and is formed between the tool engagement regions (15a, 15b), is plastically deformed in such a way that the cap (2) releases the shank (9) and the cap (2) may be pulled off in axial direction of the shank (9).

Abstract: An air spring has a pair of spaced end members for mounting the spring at spaced locations on a structure. A flexible sleeve of elastomeric material is sealingly engaged with the end members and forms a pressurized fluid chamber therebetween. A post is mounted on one of the end members and extends into the fluid chamber. A shock absorbing bumper having an outer shell formed of a high strength first plastic material is mounted on the post. The shock absorbing bumper shell is formed with a plurality of internal compartments containing one or more blocks formed of a second plastic material. The second plastic material preferably is a thermoplastic and is stronger in compression than the first plastic material of the outer shell. The relatively stronger but stiffer blocks are surrounded by the relatively softer plastic material of the outer shell and provides a bumper having extremely high compressive strength and a high resistance to breakage or fracture.

Abstract: A captive fastener assembly for non-releasable securement to a subassembly formed at least in part of a soft, ductile material and for operatively connecting such subassemblies to other members. A retainer cup has a set of projecting undercuts on its sidewall for grasping the ductile material of the subassembly through welding to prevent the captive fastener from being pulled out or away from the subassembly. A fastener member is journalled through an opening in the retainer cup to secure the subassembly to the other member, thereby forming an integral structure that resists loosening or falling apart. The captive fasteners of the present invention are simple and economical to manufacture and greatly increase the structural integrity and safety of structures that utilize them.

Abstract: A method and apparatus for attaching a steel stud to an aluminum member is disclosed. An aluminum member comprising a bore is provided, along with a steel stud, the stud comprising a tapered portion. An aluminum collar comprising a tapered bore for receiving the tapered portion of the stud is provided and placed proximate to the member such that the bores are aligned. The collar is secured to the member, via tack welding and the stud is inserted through the collar and the member such that the tapered portion of the stud engages with the tapered bore of the collar. A device is then attached to the end of the stud.

Abstract: An air spring with a pair of spaced end members and a flexible elastomeric sleeve forming a pressurized chamber in combination with the end members is disclosed. The air spring is provided with an internal bumper to absorb impacts and prevent collapse of the air spring when in operation. The bumper is formed with a continuous ledge in the central opening. Securing the bumper to one of the end members is a hollow cup. The cup lip engages the bumper ledge and the cup is attached to the end member.

Abstract: A method and apparatus are disclosed for joining a plastic insert or component to a plastic base having a recess therein. The component is provided with integral projections thereon that are in a circular array with the projections being separated circumferentially from one another by spaces. The projections are force-fitted against the plastic base. The plastic of projections is caused to flow circumferentially into the spaces, and the plastic of the base is caused to flow into the spaces where the plastics are melded together. Then the flowed, melded plastics are brought to a solid condition with spaces now filled with solid, melded plastics that interlock the components to the base against rotation relative to one another and to prevent them from being pulled apart. The preferred component is a boss. The boss may be inserted into a recess in the plastic base, and a shoulder on the boss may abut the plastic base and limit the insertion of the boss into the base.

Abstract: The present invention refers to a fastener which is welded by arc welding by one end face to a component and which is in the form of a radially resilient sleeve with a longitudinal slit and designed to permit resilient compression of the fastener, to a welding assembly apparatus for welding on elongate fateners, with a feed channel and an axially displaceable holder for the fasteners, and to an arrangement for securing an assembly part on a fastener which has been welded by arc welding on to a component.

Abstract: A tacking device for tacking a first member to a second member comprises a tacking member having a fusible plate and a pin having a bulged tip and projecting from the lower surface of the fusible plate; and a retaining member having a substantially cylindrical body provided with a plurality of catches on its outer circumference. The tacking member is rotated at a high rotating speed or vibrated with the fusible plate pressed against the first member so that the upper surface of the fusible plate is fused by frictional heat to weld the tacking member to the first member, the pin is inserted in the central hollow of the retaining member so that the expanded tip of the pin is caught by the retaining member to combine the tacking member and the retaining member, and the retaining member is forced into a hole formed in the second member so that the catches engage with the edge of the hole to tack the first member to the second member.

Abstract: An engine mounting system for an internal combustion engine includes a bracket adapted for attachment to an engine and detachable locator members which are attached to fasteners extending axially from the bracket through the frame member of a vehicle. The detachable locator members wedge the engine mounting brackets into a desired location upon the frame crossmember. Once the engine has been decked, the locator members may be removed so as to allow installation of additional fastening elements.

Abstract: A bimetallic hull mount assembly (10) for reducing galvanic corrosion of a hull (12), including a foundation (14), made of a first material, welded to the hull (12), also made of the first material; and an insert (16), made of a second material, different from the first material, welded to the foundation (14); wherein a weld area (15) between the insert (16) and the foundation (14) is covered with paint (19), and where the insert (16) is welded to the foundation (14) in a controlled welding manufacturing environment, utilizing high performance dissimilar welding techniques to produce a dissimilar metal weld and the foundation (14) is welded to the hull (12) with a standard shipyard weld.

Abstract: A plastic composite fastener capable of cutting its own hole in a resin composite panel and friction welding itself to be flush with the outer surface of the resin panel is provided. An inner metal core member can be provided with at least one cutting edge member extending from the core member. An outer plastic sheath member having an annular flange is fastened to and extends about the inner metal core member. The cutting edge member is exterior of the plastic sheath member at one end of the fastener insert unit and is configured to cut a hole in the resin panel, while the annular flange is configured to friction weld to a resin panel surface.

Abstract: A method and apparatus are disclosed for joining a plastic insert or component to a plastic base having a recess therein. The component is provided with integral projections thereon that are separated from one another by spaces. The component is inserted into the recess with the projections force-fitted against the plastic base. The plastic of projections is caused to flow into the spaces, and the plastic of the base is caused to flow into the spaces where the plastics are intermixed. Then, the flowed, intermixed plastics are brought back into a solid condition with spaces now filled with solid, intermixed plastics that interlock the components to the base against rotation relative to one another and to prevent them from being pulled apart. The preferred projections are spaced in rows and have inclined sidewalls extending outwardly to small, cross-sectional, free ends for rapidly melting and flowing into the spaces.

Abstract: A method for fabricating a threaded fastener having a discontinuous coating of a contaminant-inhibiting coating material. In a preferred embodiment, the threaded fastener is formed so as to provide a coated fastener with substantially coating-free crests. The article resulting from the fabrication method also forms a part of the present invention. The resulting threaded fasteners include electrically conductive portions, allowing use of the fasteners in fabricating structural assemblies using welding techniques.

Abstract: An anchor plate (1A) has threaded sleeves (2) for mounting equipment to a sheet metal structure (5). The plate and metal structure (5) are configured to conform to one another on assembly for structure reinforcement. An elastic tongue (10, 16) integral with the plate (1A) carries a rivet (9) which contacts the structure (5) during assembly and the two in predetermined orientation during welding of the rivet (9) to the structure.

Abstract: A bolt and nut formed from a plastic material are provided with the bolt having proximate and distal ends and the nut having an interior surface defining a bore. Raised projection members are formed integrally extending from the nut interior surface into the bore and together define a diameter slightly smaller than the shank diameter. In this manner, an interference fit is provided between the shank and projection members. With the bolt shank inserted through aligned holes in parts to be fastened, the nut can be mounted on the distal end of the bolt shank, as by a force fit, and slid thereon by exerting an axial force on the nut until the parts are clamped between the bolt head and nut.

Abstract: A pin-type fastener capable of dual-function includes a pin which can be used in fastening workpieces together. The pin has a pintail capable of being removed from the remainder of the pin after the pin has been installed as a fastener in a workpiece, and the pintail can then be used as a weldstud and welded to the same workpiece as the pin-type fastener, or to another workpiece. The pin-type fastener can be a two-part fastener, for example a lockbolt including a nut or swageable collar engageable with the pin. The pin may have a breakneck to facilitate removal of the pintail. The pin itself may be a weldstud. In use, the pin-type fastener is installed in a workpiece and the pintail is removed, and then the pintail is used as a weldstud, being welded to a workpiece. Electric welding is employed. The advantage of the fastener is in economy through second use of the pintail as a stud.

Abstract: A welding nut comprising a main cylindrical body having a bearing surface end and an axial screw hole, a flange set around an outer perimeter of the body at the bearing surface end, and axially extending protrusions formed by partially pressed the flange in a direction towards the bearing surface. The protrusions extend axially beyond the bearing surface for resistance welding. At least one groove can be formed in the bearing surface between the screw hole and the protrusions. A guide tube having an external diameter smaller than an external diameter of the body can extend axially from the bearing surface. Screw threads can be bored continuously through the screw hole of the cylindrical body and an inner perimeter of the guide tube. A large number of serrated protrusions can be formed on an outer perimeter of the cylindrical body. Each of the protrusions can have an inner surface slanting radially outwardly and axially away from the bearing surface towards an outer edge of the flange.

Abstract: A method of making a marine indicia marking on the surface of a steel hull, and the product produced thereby. The method comprises establishing a preconceived pattern for the marking and welding a plurality of nipples to the outside of the hull conforming to the pattern. Preferably, stud arc welding is used to weld the nipples to the hull. The stud used in the stud arc weld gun is of the knock-off variety and includes an upper knock-off portion and a lower permanent stud. After installation, the surface of the stud may be made smooth by grinding or other suitable methods. Finally, the studs and adjacent portions of the hull surface are painted with contrasting color paint.

Abstract: A welding stud designed to have reduced weight without loss of strength by having a stepped diameter, cylindrical form shank with a relatively thin head. The head is centrally depressed and the shank is of a first relatively large diameter closely adjacent the head and is extruded to a smaller diameter from there to the end opposite the head. The weight is additionally reduced by providing the head with a central depression which extends into the head from the axial outer end. The method of forming the stud starts with a workpiece of a diameter larger than the final desired stud diameter and cold heading the workpiece to form the stud head. Thereafter, the shank of the workpiece from a point spaced from the head to the free end of the shank is extruded through a circular die to reduce its diameter to the desired final diameter throughout the majority of its length.

Abstract: A stud which is automatically fed so as to welded stably and properly, has a large electric contact surface with the collet, facilitates clip attachment, and maintains the engagement firmly after the attachment of the clip. A stud 1 extends upwardly into a rod-like form which is threaded on its periphery, and includes a welding tip at the lower end thereof for welding to a base member such as a panel so as to be used in mounting a member to be attached on the base member. The stud 1 is formed to be short in overall length and its welding tip is formed as a flange 4 whose diameter is larger than that of the rod-like body. A crest 6 of the screw 3 is formed flat. An upper flank angle 8 of the screw is formed large while a lower flank angle 10 of it is formed small. An edge 12 of an upper end 11 of the stud is chamfered.

Abstract: A system for inserting and retaining a fastener between two generally parallel spaced apart webs formed on a first workpiece. The fastener is inserted using ultrasonic energy to deform the material of the webs to engage an axial force resisting portion and a torsional force resisting portion of the fastener with the material of the webs. The present invention includes the fastener which is constructed for use in the system, as well as an article employing the fastener for attaching the first workpiece, to which the fastener is attached, to a second workpiece.

Abstract: Arc welded joint between a carrier such as aluminium sheet as one electrode and as the other electrode a metal component with a continuous recess into which a stud-like weld-in part is introduced, wherein the weld-in part consists of a shank and a head which is enlarged in relation to the shank diameter via a step, penetrates into the recess in the component resting on the carrier and can be pressed into the pool of melt formed on the carrier so that the pool of melt adjacent to the wall of the recess embraces the outer rim of the head and the step, the pool of melt directly connecting the component, at least in the region of the edge of the wall of the recess facing the carrier, directly to the adjacent carrier.

Abstract: A nut plate fastener retains a screw inserted through an aperture formed in a panel. A double-sided adhesive tape may be adhered to one face of the fastener to mount in the panel aperture. The nut plate fastener consists of an integral member and includes a bottom plate with a cone-shaped ring-liked raised screw impression to receive and retain a screw, and a top plate portion connected to the bottom plate. The screw when in the fastened position is confined between the top and bottom plates as to be isolated from objects contained within the panel and adjacent the nut plate fastener. Three tabs project from the bottom face of the bottom plate and project through the tape which centers the fastener in the panel aperture.

Abstract: Disclosed is a stud bolt having nonsymmetrical screw threads projecting from the shank thereof, wherein each screw thread of the stud bolt has an inwardly concave curved flank and an outwardly convex curved flank. With this arrangement, the load required to fit a resin clip over the stud bolt can be lowered below that needed for a conventional stud bolt while maintaining the load required to remove the clip equal to or more than that for the conventional bolt. Thus, this stud bolt allows a resin clip to be easily fitted over the bolt.

Abstract: A swage type fastener including a swageable collar member having a pintail member secured thereto to define a pintailed collar; the pintailed collar is operable to be secured to a stud or pin member by an installation tool which applies a relative axial force between the pintail member and collar member to cause a swage anvil to swage the collar member into a locking groove portion on the pintail member and then to sever the pintailed member from the installed collar member; the stud or pin member can have a gripping groove construction at its free end to grip the collar member at initial swage and relatively low swage loads and to resist the installation tool pulling the collar member into the swage anvil instead of swaging it onto the stud or pin member under the subsequently high swage loads.

Abstract: A composite, friction weldable stud is used to affix a first plate to a second plate made of dissimilar materials. The stud has a first body made of material compatible with the first plate, with the body having a shank and a collar extending outwardly therefrom of a predetermined diameter. The collar has a first surface extending toward the shank with grooves to mate with cooperating ridges of a chuck of a friction-welding tool. The stud further includes a second body of material compatible with the second plate. The second body has a friction-weldable nose extending outwardly from the collar and substantially coaxial with an axis of the first body. The first and second bodies have cooperating threaded for affixing the two bodies together so that they can move as a unit. A hole is formed in the first plate which is larger than the nose but smaller than the collar. The nose is placed through the first hole into contact with the second plate.

Abstract: A pickup truck tail gate liner has secured thereto one or more attaching members which confront that surface of the tail gate to which the liner is to be applied. The attaching members are premanently or removably secured to the liner and adhesively bonded to the tail gate without necessitating the provision of any holes in the tail gate.

Abstract: A sealed weld nut comprises a nut body having an axial through bore, a threaded portion provided on an inner periphery of the bore, weld portions to be welded provided on one axial end of the nut body, and a separate removable sealing member provided on the other axial end of the nut body for preventing a foreign matter from passing into the bore through the other axial end of the nut body.

Abstract: A method for obtaining an electrical earth connection device wherein a metal plate having a threaded seat is provided with a screw having a flanged head which is tightened against the plate, whereupon the assembly so formed is affixed to a vehicle body and the vehicle body together with the connection device is painted in a painting bath, whereupon the screw is loosened to receive a cable terminal.

Abstract: A friction-weldable stud is provided. The stud includes an elongate body having a collar or skirt located around the body and extending outwardly therefrom. The collar has a first surface facing in one direction toward one end of the body, with the surface having an engagable configuration for engagement by a cooperating configuration of a chuck of a welding tool. The tool can thereby rotate the stud and also apply an axial force to it through the chuck and collar. The collar has a second surface facing away from the first surface preferably with an annular groove which helps shape the weld material and control flash during the welding. The body also has a friction-weldable nose or end extending outwardly from the collar in the direction of the axis of the elongate body by means of which the stud can be affixed to a workpiece by a friction-welding technique.

Abstract: A rotary welding member made of synthetic resin material comprising a post portion, and a disk-shaped flange portion integrally mounted on one end of the post portion and having a plurality of through holes in the direction of wall thickness thereof for the dissipation of an excessive portion of frictional heat generated during a rotary welding process whereby deleterious or degrading effects upon a base plate, to which the rotary welding member is welded, are effectively prevented.

Abstract: Described is an adhesively securable fastener comprising a body having an opening; an adhesive positioned within said body and registering with the opening of the chamber, a plunger means for applying pressure to said adhesive such as against an anvil means thereby adhesively securing the fastener to a substrate. Also described is a method for securing a substrate using the fastener described herein.

Abstract: A rotary welding member made of resin comprising a post portion, and a disk-shaped flange portion integrally mounted on one end of the post portion and having a plurality of ribs formed thereon in the radial direction.

Abstract: A weld stud having a cylindrical section permitting engagement by a stud welding gun, joined by a shoulder on to a threaded shank covered up to the shoulder by a cap nut made of plastics, wherein the cylinder section changes through a chamfer into a shoulder and the cap nut is provided with a resilient lip, which stretches to cover the chamfer when the cap nut is brought into contact with the shoulder. The threaded shank may have a ridge close to the shoulder which engages in a corresponding annular recess inside the cap nut. The cap nut may have a coaxial, preferably conical, projection at its end opposite the lip.

Abstract: A rotary welding member made of synthetic resin material comprising a post portion, and a disk-shaped flange portion integrally mounted on one end of the post portion and having at least one groove in the mounting surface thereof for permitting air to flow therethrough with respect to an exterior periphery surface portion of the flange portion whereby excess frictional heat generated during the rotary welding process is effectively dissipated.