Abstract: A self-drilling, self-cleaning fastener for a panel includes a head having a top side and an underside. The head has a diameter. A shank depends from an underside of the head and has a diameter less than the diameter of the head. A knurled region is adjacent the shank. The knurled region has a diameter and a plurality of spiral formed knurls having a twist in a first direction. The knurls define a major circumference as measured around peaks of the knurls. A threaded region is adjacent the knurled region and has a diameter less than the diameter of the knurled region. The threaded region has a thread form having a twist in a second direction opposite the first direction. A driving point is at an end opposite the head.

Abstract: A fastening pin has an enlarged head part, and a shaft part. The shaft part includes a large diameter section formed below the enlarged head part, a middle shaft section formed below the large diameter section, and a small diameter section extending from the middle shaft section to a leading end of the fastening pin. The large diameter section includes a round portion formed below the enlarged head part and a taper portion formed between the round portion and the middle shaft section. A diameter of the large diameter section at a side of the enlarged head part is larger than a diameter of the large diameter section at a side of the middle shaft section. The middle shaft section has a uniform diameter from a side of the large diameter section to a side of the small diameter section.

Abstract: A method for establishing a nail connection between two components and a nail for this purpose are described. The nail 6 is driven through the non-preholed components in the joint area at a high speed such that the nail point completely penetrates both components and a material collar, which extends into an adhesive layer between the two components, is only formed in the to driving direction in the nail-head-side component.

Abstract: A pneumatically drivable fastener secures drywall or other construction material to a metal stud. Each fastener comprises a driving head; and a one piece shank component, secured at one end to the driving head. Each shank component has an axial length extending perpendicularly and longitudinally from the driving head and is divided into two or three sections: (a) an optional, solid section closest to the driving head; (b) an intermediate section with grooves that define stud cutting edges; and (c) two or more forked ends opposite the driving head. A method for fastening drywall to a plurality of metal studs is also disclosed.

Abstract: A fastening element, which may be in the form of a blind rivet or screw, is intended to be driven into an unperforated workpiece. In its front region that is intended to be driven into the workpiece, it includes a punching section which is formed in a cylindrical manner and has a front end face which extends obliquely to the longitudinal axis. The punching section may be smaller in diameter than the body of the fastening element or else have the same diameter. The section between the end face and the outer side of the punching section forms a circumferential edge. On account of the oblique profile of the end face, this circumferential edge is arranged such that when the fastening element is driven in, the circumferential edge first of all strikes the metal sheet at a front point. At this front point, the circumferential edge is in the form of a cutting edge extending in the circumferential direction.

Abstract: An improved tool for installing an explosively driven fastener as well as an improved explosively driven fastener for use therewith are disclosed. The fastener includes a nail having a head with an explosive load attached thereto in a plastic cap that includes a buffer. The tool has a plurality of concentric cylinders and springs including a muzzle for receiving the fastener head and explosive load. A spring actuated firing pin ignites the load causing it to explode and drive the nail out of the tool. The explosion also automatically resets the tool. The tool and the fastener provide many advantages over existing explosively driven fasteners and the tools used to install them.

Abstract: An improved tool for installing an explosively driven fastener as well as an improved explosively driven fastener for use therewith are disclosed. The fastener includes a nail having a head with an explosive load attached thereto in a plastic cap that includes a buffer. The tool has a plurality of concentric cylinders and springs including a muzzle for receiving the fastener head and explosive load. A spring actuated firing pin ignites the load causing it to explode and drive the nail out of the tool. The explosion also automatically resets the tool. The tool and the fastener provide many advantages over existing explosively driven fasteners and the tools used to install them.

Abstract: A method for joining bodies by melting down a joining element. The joining element acts on a surface of one of the bodies and penetrates the surface as a result of a directed force. Once in a penetrated condition, a mechanical excitation is generated such that during further penetration of the joining element into the one body, the advance is maintained through the directed force and the melting down is maintained through the mechanical excitation. Molten or melted material is hydraulically displaced into the bodies.

Abstract: A full-round head nail having an offset head is configured with a gusset formed integrally between an undersurface of the offset head and a superior portion of a shank. The head of the nail is relatively thin, and the shank is positioned radially off center of the round head such that no heel is formed at a point tangential to both the head and the shank. The gusset has a lofted surface tapering radially from a roundness at the zero heel to a taper at the toe. The gusset reinforces the junction of the shank with the head, supports the toe of the head, and distributes the force of a load on the head through a longitudinal axis of the shank, preventing the toe from bending or yielding and prevents the shank from yielding to the stresses of the load applied.

Abstract: A fastening assembly includes a housing, a press, and a sealant material located in a chamber formed between surfaces of the housing and the press. The fastening assembly may be used to install cladding to a structure.

Abstract: A fastening element has a head (14), a stem (11) adjoining the head 914) and having a tip at its end remote from the head (14), a first bullet-shaped section (21) extending from the tip (13) in a direction of the head (14), and a thread profile (15) provided on the stem (11) and having, on the second section (22), a constant steep gradient with a lead angle (?2) from 50° to 74° and, on the first section (21), a gradient that increases from the lead angle (?2) of the second section (22) toward the tip (13), with a lead angle (?1) at a half of a length between the tip (13) and the end (24) of the first section (21) remote from the tip (13) amounting to at least 75°.

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 new and improved fastener for fastening together thin gauge sheet metal components comprises a forwardly extending pointed tip portion having a tangent ogive configuration so as to facilitate the fast and accurate penetration of the fastener into and through the thin gauge sheet metal components without causing any excessive enlargement of the apertures formed therein, and a shank portion which comprises a lower, spiral thread shank portion which continues to facilitate the ease of penetration of the fastener into and through the thin gauge sheet metal components, and at the same time causes a mating thread to effectively be extruded within the thin gauge sheet metal components so as to effectively develop or generate enhanced surface areas or regions for ultimate contact with an upper shank portion of the fastener when the fastener is fully driven and seated within the thin gauge sheet metal components.

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 wire nail for use with a powered nail-driving tool has a full-round head with an axis that is offset from an axis of the integrally formed shank. An outer circumferential surface of the shank is at least as offset from the shank axis in one radial direction as a circumferential surface of the head in that radial direction. Accordingly, such nails may be collated shank-to-shank in a strip of wire nails such that adjoining shanks are both parallel and touching. During manufacture of the wire nail, a notch is formed in the shank at the intersection between the shank and the head. The notch and the head axis are disposed on opposite sides of the shank axis from each other. The notch facilitates improved metal flow during the head-forming procedure and results in strong shank to head connections.

Abstract: An explosive assisted fastener for joining steel framing members. The fastener is comprised of an integrally formed member having a head section, a stem section and a tip section, such that the head section is disposed at a first end of the stem section and adapted to be linearly driven by a driving device into the framing members, and the tip section is disposed at a distal second end of the stem section and adapted to penetrate the framing members. The fastener further includes an explosive material embedded in the tip section of the fastener. In operation, the fastener is driven through the framing members until the head section of the fastener seats against an outer surface of the framing members. Once driven into place, the explosive material residing in the fastener is detonated, thereby radially expanding the tip section of the fastener and preventing removal of the fastener from the framing members.

Abstract: A nail-shaped fastening element having a stem, and a head (3, 13, 23, 33) provided at one end of the stem and projecting radially beyond the stem with the stem tapering at its another, free end toward a tip (5, 15, 25, 35) and having a spherical, first section (1, 11, 21, 31) extending from the tip (5, 15, 25, 35) in a direction toward the head (3, 13, 23, 33), and a second conical section (2, 12, 22, 32) adjoining the first section (1, 11, 21, 31) and having a length (L2, L12, L22, L32) smaller than a length (L1, L11, L21, L31) of the first section (1, 11, 21, 31).

Abstract: A drive pin (20) for the fastening of a material (22) to a sheet-metal framing member (24) with an automatic nailer is provided. The drive pin (20) has a head (26), a substantially cylindrical shank (28) having a base diameter (30) in a range of 0.0625 to 0.125 inch, and a ballistic tip (40) configured to penetrate the material (22) and the framing member (24) under force of the automatic nailer. A knurl (42) is formed upon the shank (28). The knurl (42) has at least seven and no more than fourteen substantially parallel spiral grooves (32) having a minor diameter (58) less than the shank base diameter (30). Adjacent spiral grooves (32) are separated by substantially unbroken spiral ridges (34) having a major diameter (62) greater than the shank base diameter (30). The spiral grooves (32) and ridges (34) together form a plurality of threads (44) rolled full upon the shank (28) at an angle (54) of substantially 26±2 degrees relative to an axis (46) of the shank (28).

Abstract: A fastening element which is designed for driving—in a constructional component, includes a stem (11) adjoined, at it's opposite sides, by a load application section (13) and a tip (12) facing in the setting direction of the fastening element, and a prestress member (20) having a force-introducing section (21) engaging the stem (11) and/or the tip (12), and a bearing surface (22) remote from the load application section (13) and provided with an elastic layer (17) having an opening (18) a wall (19) of which is radially spaced from an axial projection of the stem (11).

Abstract: A slide fastening assembly and alignment system for mounting a drawer slide to the interior wall of a cabinet or piece of furniture. The fastener assembly includes a fastener cartridge having a body and interior chamber. The chamber encloses a small explosive charge, a detonator, a piston head and a sharpened shaft attached to the piston head. Encapsulated adhesive may optionally surround the shaft. In the preferred embodiment, the cartridge is mounted to a fastener plate that is fixed to the drawer slide member to be attached to the interior of the cabinet. In an alternative embodiment the cartridge is mounted to a bracket. In use, the drawer slide is mounted to the drawer and the drawer is then positioned in the interior of the cabinet. Once the drawer is vertically and horizontally aligned, the charge is detonated and the piston head and shaft secure the fastener plate to the wall of the cabinet through an aperture in the fastener plate or bracket.

Abstract: A selectively hardened nail includes a nail head, an elongated shank, and a tip. A portion of the nail shank is made harder than the remainder by selectively heat treating that portion, and cooling it. The nail has controlled bending properties. The selectively hardened portion does not significantly bend when the nail is fired at a surface using a power driving tool, or during use of the nailed object.

Abstract: A fastening element such as a bolt, nail and the like to be driven into a receiving material, is formed of a high corrosion resistant steel. The fastening element has an axially extending leading region (1) to be driven into the receiving material and trailing region (2) with the two regions forming a single monolithic member. The diameter of the trailing region (2) is greater than that of the leading region (1) and has a hardness in the range of 35-43 Rockwell C hardness while the leading region has a hardness in the range of 46-55 Rockwell C hardness.

Abstract: A metal guide member (1) for guiding a fastening member (12) into a hard receiving material, as it is driven by an explosive powder charge driven setting tool, has a through opening (2) with a guide arrangement formed of at least three spaced-apart, plastically deformable guidance surfaces with such surfaces having a convex shape extending in the axial direction of the through opening. The guide arrangement assures guidance of the fastening member as it is driven and, at the same time, avoids any interference with the deformation of the guidance surfaces.

Abstract: A steel pin is disclosed of a type to be forcibly driven into a steel substrate via a powder-actuated tool. The steel pin has a substantially cylindrical shank and a substantially sharp point, which extends from one end of the substantially cylindrical shank, which conforms substantially to a tangent or secant ogive except for a substantially spherical tip having a radius in a range of about 0.015 inch (about 3.75 millimeters) to about 0.03 inch (about 7.5 millimeters), which has substantially true concentricity, which has surface-texture irregularities with a roughness-height index value not greater than about 30 microinches (about 0.76 micrometers), and which appears to be substantially free of other surface imperfections when viewed under 60.times. magnification. Optimally, the ogive is a tangent ogive with an ogive radius about ten times the shank diameter and with an ogive length about twice the shank diameter, and the tip radius is about 0.1 times the shank diameter.

Abstract: A fastening member assembly includes an axially extending shank (1) with a leading end to be inserted into a receiving material and a trailing end with a load engagement member (2). The leading end has a tip (3). An axially extending section of the shank (1) is laterally enclosed by a sleeve (4) adjacent its leading end, and a stop (5) formed adjacent the trailing end of the sleeve. A bush (6) formed of impact-resistant plastics material encloses an axially extending section of the shank and extends from the stop (5) towards the leading end. When the fastening member is driven, the sleeve penetrates into a hard receiving material and the bush (6) deforms for absorbing excess driving energy, so that a member in the form of a retaining part being connected to the receiving member, is not destroyed.

Abstract: A zero stand-off tool and system for driving a powered fastener into a target work surface. A tool is provided having a reciprocable firing pin for detonating a power charge in a powered fastener supported within the tool. An exhaust gas chamber is provided in the tool for reducing noise. A powered fastener is provided having a receptacle end in which a nitrocellulose composition charge is mounted. The receptacle end has a cylindrical portion and a conical portion. The cooperation of the target work surface, the pointed end of the fastener, the fastener support portion of the tool, the firing pin and the shape of the receptacle end of the fastener serve to detonate the power charge and drive the fastener into the work surface.

Abstract: A zero stand-off tool and system for driving a powered fastener into a target work surface. A tool is provided having a reciprocable firing pin for detonating a power charge in a powered fastener supported within the tool. An exhaust gas chamber is provided in the tool for reducing noise. A powered fastener is provided having a receptacle end in which a nitrocellulose composition charge is mounted. The receptacle end has a cylindrical portion and a conical portion. The cooperation of the target work surface, the pointed end of the fastener, the fastener support portion of the tool, the firing pin and the shape of the receptacle end of the fastener serve to detonate the power charge and drive the fastener into the work surface.

Abstract: An explosively driven nail having a head which carries a solid explosive propellent charge. A Zener diode in the form of a thin film of material functions as a primer and is attached to and overlies at least a portion of the exposed end surface of the explosive propellant charge. The primer is electrically detonated.

Abstract: A nail is adapted to be inserted in a solid material with a wire hooked to the nail in such a way so that the wire is inserted with the nail into the solid material. The nail is crosswise perforated with grooves on each side of the nail to provide a tight pathway for the wire.

Abstract: An anchoring assembly for attachment to a base material having a body with a hollow insertion portion with an open end and an expandable portion positioned behind said open end, an explosive cartridge movably housed within said insertion portion near to said open end and capable of moving from said insertion portion to said expandable portion when forces are applied thereto, and a firing pin housed within said body behind said cartridge for igniting said cartridge when said cartridge is moved from said insertion portion to said expandable portion, upon ignition causing an explosive discharge which outwardly deforms said expandable mid-section against said base material. Such assemblies provide anchorage to remote objects, when shot from a gun or rifle, and allow for attachment of ropes, hooks, ladders and other devices for firemen or mountain climbers.

Abstract: A fastening element is set in a receiving material, such as concrete, stone and the like, by driving it through the base of a blind borehole previously formed in the receiving material. When the fastening element is driven initially, it moves through a sleeve and expands and secures the sleeve in the blind borehole. Accordingly, the fastening element is fixed in the receiving material and is also secured by the sleeve in the range of the borehole in the receiving material. A fastening element assembly made up of a fastening element and a sleeve can be used.

Abstract: A fastener assembly of the type which is forceably driven into a support structure, e.g. by a power actuated fastener gun. The fastener assembly is defined as a bracket plate having a surface or edge portion by which it is disposed in bearing relationship to a supporting surface, and which plate is formed with a depression or formed portion which is disposed out of the plane of the bearing portion. An aperture is formed to extend through the depressed portion formed out of the plane of the bracket plate and a stud having a pointed end is frictionally retained in said aperture, the stud being retained so that the pointed end does not extend beyond the bearing surfaces or edges of the bracket plate.

Abstract: In order to provide an anchor site in a matrix of solid material which has an accessible face, a socket is formed in the material through the accessible face. A shaft such as an anchor bolt is inserted in the socket, leaving an accessible emergent outer end portion. Via the outer end, explosive force is introduced to or generated in a central cavity of the shaft, which explosive force dislodges and deploys radially essentially outwardly at least one key at at least one level within the socket. Various ways for producing the explosive force are described.

Abstract: Fastening elements, such as bolts, studs or nails, are inserted into a hard receiving material, such as concrete or rock, first, by drilling a blind borehole into the receiving material. The diameter of the borehole is formed so that it is greater than the diameter of the leading end of the fastening element. A setting device containing the fastening element is then aligned with the blind borehole and the fastening element is driven into the receiving material. The fastening element enters the receiving material at the base of the blind borehole. The length of the fastening element inserted into the receiving material is at least half the axial length of the borehole and may have a length considerably greater than the axial length of the borehole.

Abstract: A fastening element having a cavity containing an explosive charge arranged so that, upon explosion of the explosive charge, anchoring of the fastening element in a bore of a workpiece takes place automatically. This fastening element functions both as a rivet and nail in combination and comprises sleeve means defining the cavity containing the explosive charge at one end and providing an aperture at the other end, and a nail disposed within the sleeve means, said nail comprising a head, shank and a tip and being arranged to be driven outside the aperture formed in the other end of the sleeve means. The head of the nail acts as a piston which can be driven by explosion of the explosive charge and as a stop which arrests the driving-out movement when the shank of the nail has passed through said aperture.