Abstract: A holding dowel (10) for fastening a fastening means to a component (22), in particular to a vehicle body part, is adapted to be inserted into and arrested in an opening (20) of the component (22) and has a mount (26) for the fastening means. The holding dowel (10) has a base body (12) made from a hard material, which protrudes into the opening (20) and is adapted to fix the holding dowel (10) in place in the opening (20), and further has a sealing member (18) made from a flexible plastic material, which includes a surrounding sealing lip (38). In the installed condition of the holding dowel (10), the sealing lip (38) rests against the component (22) and seals the opening (20) of the component (22). The sealing member (18) is produced at least partly from a material which under the influence of heat establishes a substance-to-substance bond with the component (22).

Abstract: A fastener (2) comprising an elongate core (4) and made of titanium or titanium alloy, and a sleeve (6) made of a different material and having an external thread (26), the core (4) being disposed within the sleeve (6) and fixed with respect to the sleeve (6).

Abstract: A fastening device for securing panels together. Threads are formed along an outer circumference of a shank of the fastening device. The shank is coaxially connected to a head configured to be engaged by and to transfer torque loads from a tool to the shank. The shank comprises concentric cylindrical braid layers that each includes braided reinforcing fibers infiltrated with a resin matrix and adhesive layers may be disposed between them.

Abstract: Disclosed is a method and apparatus for positioning and assembly of two or more parts wherein at least one of which is of a creep sensitive material. The method and apparatus enable very precise positioning of parts during assembly by holding a rough alignment with free play permitting finer alignment. Creep resistant annular inserts are molded into the part and provided with flow apertures to conduct plastic material into the annular insert bore. A spindle defined the geometry of a centering hole within the bore during molding. The annular inserts are operable as compression limiters to prevent deformation of the creep sensitive material under the action of heat or tightening stresses.

Abstract: A threaded bolt includes a head (11), a load cation section (12) having a bar-shaped core region (17), an attachment section (13), with the head (11), the core region (17), and the attachment section (13) being formed as a one-piece part formed of metal, and a thread (15)-carrying threaded sleeve (16) formed of a plastic material and secured radially outwardly on the core region (17), with the thread (15) of the threaded sleeve (16) forming the outer thread of the load-application section (12).

Abstract: A hybrid clinch-type standoff consists of two component parts, a metal core base and a overmolded plastic barrel. The base has a through-bore and a displacer flange at the bottom. A first undercut is located immediately above the flange and extends upwardly along an outside surface of the base for providing clinch attachment of the base to a substrate. A frustoconical ramp convergent in the upward direction lies along the outer surface of the base is and is located directly above the first undercut. An axially extending segmented ring with circumferential teeth is located at the top of the base. The overmolded plastic tubular barrel composed of plastic fills the second undercut and surrounds the segmented ring. The barrel has an inner portion including a threaded inner wall which extends downardly inside the through-bore to a point flush with the bottom of the flange.

Abstract: A fastener for a turbine engine includes a bolt and a ceramic matrix composite (CMC) cap mechanically secured to the bolt. CMC components are attached to an exhaust nozzle case with the fasteners. The fastener includes a bolt made of metal and having a head. A CMC cap is located on the head of the bolt and secured to the bolt by a mechanical device. The mechanical device allows the CMC cap to have a different thermal expansion than the bolt. The CMC cap also acts as a thermal shield for the bolt, aiding in the reduction of a heat signature of the turbine engine.

Abstract: A composite metal male fastener is provided. The metal fastener includes an elongate hollow shell made of metal. The shell includes a threaded exterior for insertion or retraction from the threads of a female fastener. In addition, the shell element includes a central bore and a radially extending flange. The male fastener further includes a core element made of a composite material including plastic, fiberglass or carbon fiber or the like. The core element fills the shell's central bore and extends from the shell to encapsulate the shell's flange to form a male fastener head.

Abstract: A fastening element has a core zone (14) formed of a relatively hard carbon steel, a skin zone (17) located outwardly of the core zone (14) and formed of a first low-carbon austenitic steel alloyed with a first alloy metal, and an intermediate zone (15a, 15b) provided between the core zone (14) and the skin zone (17) and formed of a second low-carbon steel having a smaller hardness than the steel the core zone (14) is formed of.

Abstract: A composite drain plug for an automobile engine. The drain plug is made up of a hollow metal sleeve that is flanged at one end and closed at the other end. There is a core portion filling the hollow sleeve and having a head portion and a stub flange adjacent the flanged end of the sleeve. A circumferential sealing bead is bonded to the stub flange. The core portion is a glass-filled polymer and the sealing bead is made from a material which includes a cross-linked elastomer dispersed in a thermoplastic carrier.

Abstract: In the trucking industry, a wheel stud having a recess at either end to accommodate a sacrificial insert of metal higher in the electromotive series of metals than the metals of the wheel stud assembly, the lug and the components joined thereby and being of sufficient difference in color from the surrounding materials so as to be readily visible without disassembling the combination, and a method for its use.

Abstract: A thread-cutting screw (1) serves for being screwed into the bore-hole wall (1a) of a bore-hole (1b). It comprises a substantially cylindrical core (2) of metal which has a central longitudinal axis (4), a thread (5) forming one piece with the core (2), and at least one cutting element (6, 7), disposed within the thread (5), for cutting engagement with the bore-hole wall. The core (2) consists of a metal of a carbon content between 0 and 0.5 percent by weight. The at least one cutting element (6, 7) is fixedly connected with the core (2), constituting a welded structure of a metal with a carbon content greater than 0.8 percent by weight. Being safely connected to the core (2), the cutting elements (6, 7) offer efficient cutting operation, with any risk of brittle fracture of the screw (1) being precluded.

Abstract: A structure and a method of preventing electrolytic corrosion for a magnesium alloy member (20), the structure wherein a first coated layer (11) formed by electro deposition and a second coated layer (12) formed by distributing PTFE particles on the first coated layer (11) are covered on the surface of a tightening member (1) at least on a surface coming into contact with the magnesium alloy member (20), whereby, the electrolytic corrosion of the magnesium alloy member can be prevented at a low cost by insulating a tightening member such as a steel bolt and a washer from the magnesium alloy member, and an adhesiveness therebetween can be sufficiently assured.

Abstract: A fastener, such as a nail, screw, etc., which possesses supplemental support and/or retention capability is provided. The fastener includes an elongated auxiliary member secured interiorly to, exteriorly to, or along the shaft of the fastener. The auxiliary member is secured to the shaft at two or more portions of the shaft. The auxiliary member provides the shaft with additional support strength and/or enables fastened materials to be retained upon breakage or shearing of the shaft as a result of, for example, heavy tensile or shearing loads. To facilitate breakage or shearing of the shaft, the shaft may be provided with a deformation, such as a notch or reduced circumference, at one or more desired locations such that the shaft breaks or shears at the deformation(s), thereby allowing the auxiliary member to function as the sole member which retains the fastened materials.

Abstract: A composite fastener and method for fastening structural members are provided. The fastener is formed at least partially of a composite material. For example, at least one component of the fastener can be formed of a composite material and the remaining components of the fastener can be formed of a metallic material. The fasteners can be compatible with the materials of the structural members to be fastened or joined, such as where all or at least one of the structural members are formed of a composite material. In some cases, the fastener can be installed blindly from one side of the structural members with no or limited access to the opposite side.

Abstract: A substantially watertight grommet having a sealing mechanism that can simultaneously form a watertight seal between the grommet and a pin received therein and between the grommet and a panel within which the grommet is received is herein described. In a preferred embodiment, the sealing mechanism is formed integrally with the head of the grommet by an overmolding process. A body of the grommet has a retention structure for securing the grommet within a bore formed in a panel and a catchment mechanism for securing a pin within the grommet. The catchment mechanism is constructed so as to permit the pin to be secured within the grommet in a plurality of positions.

Abstract: A fastening element which has a core (16) of a relatively hard, carburized steel and a ferritic rim zone (15) of a less hard, low-carbon steel, includes a stem (11), a head (14) provided at one end of the stem (11), a tip (13) provided at an opposite end of the stem (11), and a transition region (12) extending between the stem (11) and the tip (13) and in which a thickness (18, 19, 20) of the ferritic rim zone (15) gradually diminishes from the stem (11) in a direction toward the tip (13) to a nill value (21), so that the tip (13) is free from the ferritic rim zone (15).

Abstract: A fastening device, which will facilitate the assembly of associated parts or manufactured articles, and electromagnetic energy absorptive component for absorbing electromagnetic waves and converting wave energy to heat; an expansive component, which expands upon exposure to heat emanating from the target material; matrix material, which will become adhesively active and effect the adherence of the associated parts upon exposure to heat emanating from the target material, and a stiffening component.

Abstract: A fastener, such as a nail, screw, etc., which possesses supplemental support and/or retention capability is provided. The fastener includes an elongated auxiliary member secured interiorly to, exteriorly to, or along the shaft of the fastener. The auxiliary member is secured to the shaft at two or more portions of the shaft. The auxiliary member provides the shaft with additional support strength and/or enables fastened materials to be retained upon breakage or shearing of the shaft as a result of, for example, heavy tensile or shearing loads. To facilitate breakage or shearing of the shaft, the shaft may be provided with a deformation, such as a notch or reduced circumference, at one or more desired locations such that the shaft breaks or shears at the deformation(s), thereby allowing the auxiliary member to function as the sole member which retains the fastened materials.

Abstract: A weld-on part made of aluminum or an aluminum alloy, such as but not limited to a stud (1), which has a surface which is at least partially provided with a layer (5) which contains a titanium containing material. The stud (1) is treated with a chrome-free passivating solution which imparts corrosion resistance while simultaneously causing a layer (5) of titanium containing material to be formed on at least a portion of the surface of the stud (1). The layer (5) of titanium containing material permits the stud (1) to be satisfactorily welded to a surface, without the occurrence of arc jumping or blowing, in part, by lowering contact resistance during the welding process.

Abstract: A propeller attachment is disclosed including a body, the body including an anodic material, at least one projection projecting from the body, and a fastener coupled to the body. An anode is also disclosed including an annular body constructed from an anodic material, a fastener disposed centrally in the annular body, and at least one extension coupled to the annular body, the at least one extension is configured to allow for gripping of the anode. A fastener for coupling a propeller to a drive shaft of a lower unit is disclosed including a fastening portion configured to threadably engage the drive shaft and retain the propeller. The fastener further includes an anodic portion disposed around the fastening portion. The anodic portion is shaped to form at least one grip, and the anodic portion preferentially corrodes to prevent corrosion of the lower unit.

Abstract: A fastening device, which will facilitate the assembly of associated parts or manufactured articles, and electromagnetically absorptive component for absorbing electromagnetic waves and converting wave energy to heat; an expansive component, which expands upon exposure to heat emanating from the target material; matrix material, which will become adhesively active and effect the adherence of the associated parts upon exposure to heat emanating from the target material, and a stiffening component.

Abstract: The present invention provides the driving fit rivet made of aluminum, whereof, when driving in the rivet to caulk and joint without making a prepared hole on aluminum plates, no crack, no buckling, no seizure, and the like are caused, it is possible to caulk and joint aluminum plates with high operation efficiency and certainly, and it is superior in recycling, additionally it is possible to lighten products. The rivet is made of JIS (Japanese Industrial Standard) 6000 series aluminum alloy, and has a head and a shank, wherein surface hardness of said shank is Hv 135 or more.

Abstract: The invention relates to an expansible fixing plug (10), which is manufactured as a two-material fixing plug from a relatively soft and a relatively hard plastics material. To achieve a low insertion torque of an expansion screw as the expansible fixing plug (10) is expanded, yet nevertheless a high anchoring force, the invention proposes constructing from the relatively hard plastics material expansion fingers (22), having cross-sectional areas increasing in size in the direction towards the leading end of the expansible fixing plug (10), which expansion fingers are embedded in expansion tongues (14) of the relatively soft plastics material having a cross-section corresponding to a circular segment, the expansion tongues (14) being connected with one another by dilatation zones (16). (FIG. 8).

Abstract: A fastener includes a composite body and a metal coupling attached to the body. The metal coupling includes an attachment structure to connect the fastener to an external structure.An assembly of components includes a first metallic component having a first coefficient of thermal expansion, a second non-metallic component having a second coefficient of thermal expansion different from the first thermal expansion and having a groove that receives a fastener that extends between the groove and the second component, the fastener slidably engaging the groove to accommodate relative expansion between the components.

Abstract: A fastening device, which will facilitate the assembly of associated parts or manufactured articles, features a conductive target material for absorbing electromagnetic waves and converting wave energy to heat; an assembly element, contiguous with the target material, which expands upon exposure to heat emanating from the target material; and a solid adhesive material, contiguous with the conductive target material, which will become adhesively active and effect the adherence of the associated parts upon exposure to heat emanating from the target material.

Abstract: An apparatus and method for use with powdered resin feeders that provide a continuous stream of powder to a plurality of spray nozzles for the application of powder to a plurality of work-pieces. In one preferred embodiment, the apparatus converts a single powder stream into a plurality of uniform powder streams through the use of a multi-tiered system having dividers and receptacles that accurately divide a single powder stream into a plurality of powder streams. In another preferred embodiment, a double-ended stud having ends with differing break-away torques may be created by the device's ability to distribute different amounts of powder to the spray nozzles.

Abstract: Processes are set forth for forming high strength thermoplastic polymer bone fixation devices used, for example, in orthopedic surgery, where "strength" is quantified in terms of a given device's pullout strength, tensile modulus, shear strength and breaking torque strength. Products of the aforementioned process are contemplated by the invention as well, with both "bioabsorbable" devices, for example, screws which are absorbable in an animal body and do not need to be removed after the bone in which they are inserted has healed; and non-bioabsorbable devices being described.

Abstract: A tie rod assembly for use with forms for forming a wall of pourable, curable material. Each assembly has a rod having opposite threaded ends and two spacers. Each of the spacers has a first conical section having a recessed opening at an apex region of a concave conical guide surface and a hexagonal recess surrounding the apex region, and a second conical section having a threaded bore communicating with the apex opening. The threaded bore has a coil thread nut integrated with the conical second section. The concave conical guide presents a target for directing a remotely inserted bolt towards the apex region for engagement with the coil thread nut.

Abstract: A sliding part having a metallic main body which is formed with a silver plating layer over a surface thereof slidable in contact with other metallic part. The silver plating layer has a crystal structure so adapted that the intensity of diffraction X-rays diffracted by the (200) plane thereof is at least 1/3 of the intensity of diffraction X-rays diffracted by the (111) plane.

Abstract: An anchoring device for anchoring a threaded member in a substrate material includes a plastic anchoring sheath for receiving the screw. The plastic anchoring sheath includes annular anchoring ribs formed around a body portion of the anchoring sheath and at least three longitudinal ribs extending along at least a portion of the body portion of the anchoring sheath preferably parallel to a longitudinal axis of the anchoring sheath. The longitudinal ribs extend outwardly from the anchoring sheath and lie in different planes which intersect at the longitudinal axis of the anchoring sheath. The anchoring sheath preferably includes top and bottom regions which have no annular or longitudinal ribs. The plastic anchoring sheath may be coated with a resilient, elastomeric coating.

Abstract: Compositions and designs useful for fabricating safety cushion and mat assemblies which have effective protection against injuries to persons falling from a height of up to twelve feet are disclosed. The rubber anchor composition has a shore hardness of about 73 and comprises a natural rubber, a processing aid agent, a plasticizer, a filler, an antioxidant, an antiozonant, an activator, an accelerator, a vulcanizer, an inhibitor and optionally a colorant or a whitener. Moreover, the rubber anchor comprises a rounded head portion with a diameter of about 1.5-2.2 inches and a thickness of about 0.15-0.5 inches; a bolt portion of about 3-6 inches in length, and a diameter of about 0.4-0.8 inches, preferably the bolt portion further has indentations. In addition, preferably a metal washer is embedded in the bottom of the rounded head portion to provide further anchoring support to prevent the impact attenuation safety cushion and system from being pulled up from the ground.

Abstract: The improved metal matrix bolt has a metal shell having the bolt head, shank and threads thereon. The shell has a longitudinal space therein wherein a composite core of fibers is bonded. The fibers are divided into two groups: a longitudinal group and a spiral group. The spiral group wraps clockwise about the longitudinal group and is inclined at an angle of about 30.degree. to 45.degree. degrees from the axis of the bolt. The fibers are bonded within the space to the interior surface of the shell whereby when the bolt is torqued, the bolt has increased tensile strength and reduced thermal axial growth.

Abstract: A tightening member molded from hard synthetic resin containing carbon fiber developed from hyperfine particles of a high-melting metal and/or a compound of the high-melting metal by use of vapor phase system for thermally decomposing hydrocarbon. The tightening member effectively prevents electrification of static electricity due to its high conductivity given by the carbon fiber and is bestowed with mechanical properties such as tensile strength.

Abstract: A carbon and/or ceramic fiber reinforced carbon and/or ceramic matrix composite threaded member including a core, a fiber containing thread-defining element bonded to the exterior of the core and a reinforcing fabric layer securing the thread-defining element to the core. The thread-defining element may be an integral part of a tubular braided reinforcing fabric or applied to the core prior to application of a reinforcing fabric layer. Externally and internally threaded members and methods for their manufacture are described.

Abstract: A threaded member including a core, a thread-defining element helically extending around and along the core and a reinforcing tubular fabric layer bonded to the exterior surface of the combined core and thread-defining element. The radial projection of the thread-defining element defines a helical thread whose contour is followed by the fabric layer and the exterior surface of the threaded member. The composite threaded member may be formed by forming a braided or knit fabric layer on an elongated spiral wrapped core. The spiral wrapped thread-defining element and the fabric reinforcing layer is bonded to the core. A polymer sheath protects the underlying structure.

Abstract: A threaded member including a core having an integral tubular braided layer bonded to the exterior surface of the core. The braided layer includes at least one element of greater radial projection which defines a helical thread on the exterior surface of the core. The composite threaded member may be formed by forming a braided layer on an elongated core. The braided layer includes at least one element of greater radial projection relative to the core than the remainder of the elements forming the braided layer. The element of greater radial projection defines a helical thread on the core. The braided layer is bonded to the core.

Abstract: A metallic threaded composite fastener, particularly suited for high temperature applications, has a body member made of high temperature-resistant composite material with a ceramic coating. The body member has a head portion configured to be installed in a countersunk hole and a shank portion which is non-circular and tapered. One part of the shank may be non-circular and the other part tapered, or the two types of surfaces could be combined into a frustum of a non-circular cone. A split collar member made of high strength, high temperature-tolerant metal alloy is split into two halves and the interior of the halves are configured to engage the shank. The exterior of the collar has external threads and the upper portion of the collar has a circumferential groove which receives a lock ring to secure the collar halves to the shank.

Abstract: A hollow composite internally threaded member such as a nut includes a reinforcing fabric layer such as a braided or knit layer extending in the axial direction of the member and conforming to its threads and an exterior cross-sectional configuration defined by a tubular braided triaxial fabric having axially extending elements of greater size than the remainder of the elements forming the triaxial fabric. A method of making such an internally threaded member comprises forming and embedding in a mtrix at least one reinforcing fabric layer and one triaxial fabric layer on an externally threaded cylindrical core and thereafter removing the core. Such internally threaded member may be threadedly joined and bonded to an externally threaded member of complementary thread pitch and thread diameter to form a bolt. The externally threaded member may comprise an elongate core having an integral tubular fabric layer bonded to its exterior surface.

Abstract: A method of molding fiber-reinforced bolts including wrapping a bundle of unidirectional fibers axially around a core, placing the core in a molding cavity, supplying fiber-reinforced resin to the mold cavity, and curing the resin encapsulated core. The core of the bolt product can also be made of a fiber-reinforced composite resin material.

Abstract: A hollow composite internally threaded member such as a nut includes a reinforcing fabric layer such as a braided or knit layer extending in the axial direction of the member and conforming to its threads. A method of making such an internally threaded member comprises forming and embedding in a polymeric matrix a reinforcing fabric layer on an externally threaded cylindrical core and thereafter removing the core. Such internally threaded member may be threadedly joined and adhesively bonded to an externally threaded member of complementary thread pitch and thread diameter to form a bolt. The externally threaded member may comprise an elongate core having an integral tubular fabric layer bonded to its exterior surface.

Abstract: A method for joining carbon-carbon structural elements together using a carbon-carbon pin type fastener for transfer of shear loads. A coating of powdered metal which undergoes a large expansion when reacted in the presence of a gas is used to coat the outer surfaces of a pin which extends through the structural elements to be joined, with the powdered metal coating between the body of the pin and the surfaces of the structural elements through which the pin passes. After installation through the structural elements the pin is heated in an oxygen atmosphere causing the powdered metal coating to expand up to 100% from its unheated volume binding the pin to the structural elements. A fluted or scalloped edge on the pin increases the surface area of the pin increasing its friction holding force.

Abstract: The fastening together of structural elements formed from carbon-carbon is accomplished by a fastener constructed from 2-D or 3-D carbon-carbon in the form of a high angle helical threads on one end and a countersunk head with a carbon-carbon central insert on the other end with the threaded end inserted through the carbon-carbon structural elements to be joined. A metal is painted on the threads and the shank on the fastener. A collar formed from carbon-carbon is fitted over the course threaded end of the fastener with the distal end of the threads extending therefrom. While passing a heating current through the fastener, the head and the collar of the fastener are forced together. The fastener is heated to an elevated temperature in the presence of an Oxygen gas cover which causes the powered metal to expand up to 100% binding the fastener to the carbon-carbon components, collar and insert.

Abstract: A fastening member to be driven into a hard receiving material, such as concrete, masonry, rock and the like, has an axially extending shank with a drilling head at its leading end and a thread adjacent its trailing end for connecting a load to the fastening member. A device is located on the shank for engagement with a tool for driving the fastening member into the receiving material. Initially, the fastening member drills a blind bore into the receiving material and then an explosive powder charge drives the member into its final position.

Abstract: A fastener for insulated roofing comprises a non-metallic, screw-threaded shank, having a penetrating point at one end of the shank and a transverse plate carried at the other end of the shank. The shank and transverse plate are preferably integrally method out of a polyetherimide resin formulation which has a tensile strength of at least 15,000 psi. as tested by ASTM D638. Such a fastener has a great advantage in terms of cost and lack of corrodability, while still exhibiting the required strength. Also, a universal driver socket is provided.

Abstract: A device and method to prevent delamination at load-bearing apertures in structural composite substrates is disclosed. The device is a composite reinforcing grommet having a hollow, generally tubular member of braided filaments impregnated with polymer. The member may be radially deformed for insertion into an aperture in a structural composite substrate and is then capable of being radially expanded to form flanges to secure the structural composite between the flanges. A method of reinforcing a substrate having an aperture therethrough including the step of cobonding a composite reinforcing grommet to a structural composite substrate is also disclosed.

Abstract: An essentially cylindrical, light weight, composite fastener formed of an interior cylindrical core member, a cone-shaped molded insert plug member in the first or head end of the core, and an exterior cup-shaped overwrap member. Threads are formed at the second or threaded end of the fastener. All of the components are fabricated of an organic resin material with high-modulus fibers embedded therein. The fibers of the exterior member are long and continuous while the fibers of the other members are short and chopped. All the fibers are essentially parallel with the axis of the fastener. The resin material is preferably polyetheretherketone and the fibers are preferably graphite. Also disclosed is the method of manufacturing the above described fastener.

Abstract: The invention is a composite rivet comprising a tubular preform having a longitudinal axis and an aperture therethrough aligned with the longitudinal axis. The preform further comprises a head portion, a head forming portion and a shear portion therebetween. The preform is composed of filamentary material in a resin matrix with the filamentary material in the head forming portion in a helical pattern about the longitudinal axis. A mandrel is mounted in the aperture with the mandrel having an end extending outward from said head forming portion.

Abstract: The clutch disc for a friction disc clutch comprises friction linings attached to a lining carrier by connection elements. The connection elements are provided with a synthetic plastics conical head, seated in a conical opening of the friction lining. A shank, on the side of the lining carrier turned away from the friction lining, has been deformed into a closing head. The portion of the shank forming the closing head can consist of synthetic plastics, too, or can be formed by a metal hollow rivet anchored in the head. The synthetic plastics head wears out along with, and increases, the wearable volume of the friction lining.

Abstract: A method of forming a lightweight threaded fastener element of bimaterial construction to high tolerance requirements, the element formed by the steps of shaping a metal shell to a preliminary configuration blank by extrusion, filling the extruded shell with a less dense material such as a curable epoxy-graphite material or an aluminum-lithium alloy, further shaping the filled blank by forging both the core material and shell to an intermediate configuration which is finished by warm rolling to form a strong lightweight fastener element configured with the metal shell thereof which may be engageable with a cooperating metal fastener assembly member.