Abstract: A multi-stage tooling pin clamp capable of holding weld nuts of different sizes includes a housing having a proximal end, a distal end, and a plurality of longitudinal stages extending between the proximal and distal ends. A plunging pin within the housing and includes a plurality of tapered surfaces configured to radially displace at least one locking ball ring assembly disposed in at least one of the plurality of longitudinal stages of the housing. An actuating mechanism is in communication with the plunging pin configured to move the plunging pin toward the distal end of the housing to displace the at least one locking ball ring assembly radially outward to hold the weld nut, and a restoring mechanism in communication with the plunging pin configured to move the plunging pin toward the proximal end of the housing to release the hold on the weld nut.

Abstract: An expansion anchor includes a hollow shaft 3 and a bolt 9 to be screwed thereinto from a base end side of the hollow shaft. The hollow shaft 3 is formed, at a portion thereof short of a tip end 3a, with a radially expansive portion 7 which includes slits 6, and a multiplicity of balls 10 are inserted into the radially expansive portion 7. When the bolt 9 is screwed, the balls 10 push against each other and move radially. As a result, the radially expansive portion 7 deforms expansively for securely engaging with a pre-formed hole 2. Even when the radially expansive portion 7 expands, stress does not concentrate at a specific portion of an installation region 1, so that it is possible to provide a high withdrawal resistance while preventing cone-type failure. The management of the withdrawal resistance can be easily performed by screwing the bolt 9) using a wrench with a torque limiter or by screwing the bolt 9 using a torque wrench.

Abstract: A pocket plug is made by making a first angled cut and a second angled cut relative to proximate a first line and a first side of an elongate member having a length. A plurality of pocket plugs are made by repeating the first angled cut and the second angled cut a distance apart from the previous second angled cut along the length of the elongate member. Thus, by alternating between the first angled cut and the second angled cut the distance along the length of the elongate member, the plurality of pocket plugs are made.

Abstract: Discloses is an anchor bolt including a stud. The anchor bolt further includes a wedge in operable communication with the stud. The anchor bolt still further includes a heat treated then cold worked sleeve disposed about the stud and in operable communication with the wedge.

Abstract: A self-anchoring fastening device for installation in supports for hanging pipes wires or other articles in ceilings is shaped for a socket to drive the device for an easy installation process. The device comprises a collapsible anchoring portion having radially expanding anchoring strips, which will not pull out of a hole drilled in a support. A drill drills a hole in a support and an expandable anchor is inserted through the hole. Threads internal to the expandable anchor cooperate with threads on a screw inserted therein to collapse the expandable anchor, providing anchoring strips over the hole such that the expandable anchor cannot be pulled out of the hole. A threaded portion of the base of the screw is suitable for attaching the article to be hung. The base may be a swivel head type. The drill may be on the expendable anchor assembly.

Abstract: A self-anchoring fastening device for installation in supports for hanging pipes wires or other articles in ceilings is shaped for a socket to drive the device for an easy installation process. The device comprises a collapsible anchoring portion having radially expanding anchoring strips, which will not pull out of a hole drilled in a support. A drill drills a hole in a support and an expandable anchor is inserted through the hole. Threads internal to the expandable anchor cooperate with threads on a screw inserted therein to collapse the expandable anchor, providing anchoring strips over the hole such that the expandable anchor cannot be pulled out of the hole. A threaded portion of the base of the screw is suitable for attaching the article to be hung. The base may be a swivel head type. The drill may be on the expendable anchor assembly.

Abstract: A nail structure comprises a wall nail casing a center of the wall nail casing being formed with a tapered central axial hole which is reduced toward a distal end thereof; two sides of the distal end of the wall nail casing being formed with respective slots; and one end of the central axial hole being an through opening and another end thereof being an inlet; a hammer nail capable of inserting into the central axial hole; and a plurality of semi-round enhancing ribs are on an inner surface of the central axial hole of the wall nail casing; a front end of each enhancing rib being reduced toward one inlet of the central axial hole for receiving the hammer nail easily.

Abstract: A nail structure has a wall nail casing and a hammer nail. The center of the wall nail casing is formed with a tapered central axial hole. In manufacturing the wall nail casing, an interior and a distal end of a mold for forming the wall nail casing are installed coaxial pins. When the wall nail casing is formed, two ends of the nail body are supported by coaxial pins; and thus the central axial hole will not shift. When the wall nail casing is formed, the distal end thereof is exactly formed with a though hole which is communicated with the central axial hole. When the hammer nail is beaten into the central axial hole of the wall nail casing, the hammer nail expands the central axial hole outwards to prevent the hammer nail from colliding the distal end of the wall nail casing.

Abstract: The novel anchor has a neck portion formed with an opening for inserting a screw into the anchor, a head portion formed with an annular, circumferentially closed collar, and spreading elements connecting the neck portion with the head portion. Radially extending longitudinal webs connect the spreading element with the collar and they space the collar from the spreading elements.

Abstract: This invention relates to a friction rock stabilizer which includes an elongated tendon tube which is reduced in cross-sectional dimension over a portion of its length towards one end of the tube, a slot which extends over at least the unreduced length of the tube and a radially extending stop which is located on the reduced dimension portion of the tube for supporting a face washer on the stabilizer. Preferably, the reduced cross-sectional length of the tube is parallel sided and is conveniently circular in cross-section.

Abstract: An expansion plug has at least one tensioning member, an expansion means formed by a system of at least two expansion tubes encircling the tensioning member and fitted one within another, each of the expansion tubes being provided with a series of slots which are equally spaced in a circumferential direction to retain peripheral sections of the expansion tubes between the slots, the slots extending over a part of a length of the expansion tubes, the tensioning member and the at least two expansion tubes being dimensioned and shaped so that by inserting an axial relative movement the peripheral sections are radially expanded in order to achieve an anchoring effect, the slots of the at least two expansion tubes having a shape which is helical in relation to an axis of a respective one of the expansion tubes, the slots having a slope such that the slope of radially adjacent ones of the expansion tubes are of mutually opposite hand, the expansion tubes being arranged to be non-rotatable relative to one another.

Abstract: A fastening plug for mounting furniture hardware having an expandable sleeve into which an elongated shaft of an expander enters, the shaft having a head for rotating the expander relative to the sleeve. The elongated shaft of the expander has multiple expansion sections along the length of the shaft and which taper in the direction of the protruding end of the shaft. The central bore of the sleeve which receives the elongated shaft of the expander, is shaped so as to complement the shaft, and the position of the complementary, tapering expansion sections of the shaft is varied relative to the complementary tapered central bore sections in the sleeve when the expander is rotated relative to the expansion sleeve.

Abstract: An expandable fastener device for attaching tissue to bone and a surgical operating technique for using it. The fastener device includes a shaft which will pierce tissue and when rotated, will drill a hole in bone with a drill point to receive the fastener in bone. The device can be drilled in place and fixed in place by actuation of the device itself. The anchor porion of the fastener device remaining in the body when the shaft is sheared and removed, is made from a a bioabsorbable polymer material and an implantable grade titanium material or alloy thereof. The portion of the fastener that captures the body soft tissue (tendon or ligaments) is biodegradable and the portion anchored to the bone is the titanium material. Another embodiment constructs the component that captures the body soft tissue into a pedal-like integral disk where each pedal flexes to conform to the shape of the bone surface adjacent thereto.

Abstract: A railroad crosstie plug is positioned within an existing spike hole in a crosstie to restore a predetermined gage between parallel railroad rails. The plug comprises a hollow sleeve having a slot along one side thereof and an interior configuration complimentary to the configuration of the spike. A member separate from the sleeve is pivotally mounted at one end to a lower edge of the slot. The member also defines an impact surface extending across a portion of the interior of the sleeve. When a spike is forced into the sleeve against the impact surface, a second end of the member pivots out of the sleeve and into the surrounding wood of the railroad tie there by locking the sleeve and spike in place within the hole.

Abstract: An expansible anchor of metal for anchoring in a hole drilled in masonry has a bolt with several connected expander cones forming a thread and an expansible sleeve provided with an internal thread matching the expanding cones. To achieve high holding fores and low draw-in force, expansible portions are formed at uniform intervals along the internal thread of the expansible sleeve by U-shaped channels. The expansible sleeve is manufactured from powdered metal in an injection molding method using a system of binders combined with subsequent removal of binders and sintering, and an injection-molding tool having a removable thread core for the internal thread of the expansible sleeve.

Abstract: A fastener adapted to expand into bone has a tubular body having a longitudinal opening therethrough with a stop within the opening. The body has a head at one end and a longitudinal slot extends through the body near the other end to form ribs that expand radially when the body is compressed. A puller projects through the opening in the rivet and has a head that engages the other end to compress the rivet when the puller is pulled through the body. An annular recess is formed in the puller near the head and the other end of the body is crimped into the recess to aid expansion of the ribs. The puller is weakened at a point so that it will break upon continued pulling after the ribs reach a fully expanded state.

Abstract: A plug is suitable for use in preformed blind holes in rigid and soft material and also holes in sheetform material.The plug comprises a head portion (2) joined to a tail portion (10) by four legs (12), all having flexing points (20, 22, 24) towards their ends and in a central portion.The tail portion has a thread formation (16, 18) formed by a moulding process.

Abstract: An expandable rivet assembly for attaching objects, especially when using bone. The assembly includes a rivet and puller where the puller is pulled to expand the rivet. A stop is provided in the rivet to set an upper limit to the expansion of the rivet by the puller. This rivet is useful in material of varying density, and has slots on the side and a contoured surface to initiate bending at a desired location.

Abstract: A plug is suitable for use in preformed blind holes in rigid and soft material and also holes in sheet form material. The plug comprises a head portion joined to a tail portion by four identical legs, all having flexing points towards their ends and in a central portion, the radial thickness of the legs increasing towards the central portion, so that the outer diameter of that portion is greater than the diameter of the tail portion and the head portion, and the transverse thickness of the legs decreasing towards the central portion.

Abstract: An anchor member having an anchor tube formed with an anchor plate orthogonally mounted to the tube, including slots directed through the tube to ease deformation of the tube upon internally threaded tube portion and drawn towards the anchor plate by a bolt member directed through the tube structure. The anchor plate includes a plurality of diametrically opposed apertures to receive a spanner tool structure to effect securement of the tube relative to the bolt structure.

Abstract: The pin comprises an expansion body (2) and, around the body, an expandable tubular sleeve (3) made from a flexible material, with a stop collar (12) and an end (10) forming a nut. With the pin extending through an orifice pierced in the wall with the sleeve collar (12) bearing against the front face of the wall, the nut (10) interacts with an end part of the body, is driven towards the collar (12) and brings about the expansion of the sleeve (3) and its squashing against the rear face of the wall. The body (2) is tubular, in order to receive a screw for fixing a piece upon the wall, and has, unlike the end part, a collar (7) for bearing against the one (12) on the sleeve (3). The sleeve (3) is plastically deformable and means (42) are provided for preventing the rotation of the body (2) with respect to the sleeve (3) in the opposite direction to the direction of expansion. The end of the body (2) is provided with a piercing bit (4).The pin of the invention can be applied well to bricks.

Abstract: An insertable moldable ratchet rivet assembly of a unitary construction for securing a plurality of panels together includes a drive-pin insert of a unique construction to facilitate the pull-up operation with a reduced amount of force and to form slots in the shank of a rivet housing. The drive-pin insert includes a body portion having a plurality of segments which are spaced apart from each other to form recessed flattened surfaces therebetween. Each of the flattened surfaces is provided with a plurality of lengthwise-spaced horizontal teeth. The rivet housing includes a head flange and a shank. The rivet shank is formed of a plurality of shank wall portions extending substantially from the rear surface of the rivet head flange. The plurality of shank wall portions are spaced apart from each other to provide slots therebetween which are formed by the plurality of segments on the body portion of the drive-pin insert.

Abstract: A fastening device in the form of a plug and a screw is adapted for installation in a blind bore of a thick wall or in a through hole in a thin wall. The plug is formed as an elongated body having a central longitudinal hole. The body has inner and outer end portions and two parallel slots extending longitudinally between the end portions to define four legs arranged circumferentially around the body. The legs diverge from the end portions to form an increasing diameter for the body which reaches a maximum at the center of the body. When the plug is inserted into a blind bore the legs are displaced inwardly to reduce the size of the central longitudinal hole so that when the screw is inserted into the plug, the screw will exert force on the legs to press the legs against the wall with strong radial forces.

Abstract: The fixture or dowel pin has an axial opening including progressively smaller tapered sections alternating with progressively smaller cylindrical threaded sections. Screws having corresponding tapered tops and threaded sections fit respectively into the sections of the body and, after the pin is inserted in the openings of two plates to be immobilized, the respective screws are tightened to expand the pin body in zones outward from the respective screws and immobilize the pin and plates surrounding the zones.

Abstract: A universally self-aligned expandable nut including a head and a body moldable in a simple mold having a straight-line open and close action. The head includes an enlarged flange having a central opening through which a screw can pass. The body includes a shank connected to the flange having individual upper walls separated by axially extending upper slots and inner and outer surfaces parallel to a longitudinal axis defining a shank cavity. The upper walls have distal ends establishing a first fold line. The body also has individual tapered wall sections separated by axially extending lower slots aligned with the upper slots. The tapered walls each have an upper end connected to the distal end of an adjacent upper wall section, a lower end, and an inner surface that coacts with inner surfaces of adjacent lower walls to define a lower cavity. The lower wall inner surfaces terminate at a medial portion between the upper and lower ends establishing a second fold line.

Abstract: A screw rivet includes a screw and a grommet. The grommet has internal steps for meshing with external threads of the screw. The internal steps are formed on the inner periphery of an expansible portion of a leg of the grommet split by axial slits, and have a staircase-like sectional profile.

Abstract: A coupler for coupling together plates includes a male member having a head and a pin-like portion having male threads and depending from the lower surface of the head and a female member having a flange facing the head of the male member, a leg portion depending from the lower end of the flange and a bore extending from the upper surface of the flange into the leg portion and capable of receiving the pin-like portion of the male member. An upper portion of the inner periphery of the bore is provided with a helical ridge.

Abstract: An expansion dowel assembly includes an axially elongated anchor bolt and a pair of serially arranged expansion elements or shells into which the anchor bolt is drawn. The anchor bolt has axially extending conically shaped expansion members spaced apart in the axial direction and each is arranged to be drawn into a different one of the expansion elements. The expansion member closer to the leading end of the anchor bolt has a larger cone angle than the other expansion member. The expansion elements are interconnected by a web so that the expansion elements are axially displaceable relative to one another. When the anchor bolt with its expansion members is drawn into the expansion elements, initially the trailing expansion element is widened or expanded. Subsequently, after a predetermined axial movement of the leading expansion element toward the trailing expansion element, the widening of the leading expansion element is commenced.

Abstract: A blind fastener of the type wherein a cylindrical stem or mandrel pulled within a tubular sleeve or rivet body to cause legs formed in the latter to collapse outwardly into engagement with the blind side of a work piece. Such legs are formed in the rivet body by providing longitudinal cuts or slots, and each of such legs is deformed or crimped inwardly to provide an offset condition which virtually insures proper and effective outwardly collapsing of all of the legs, substantially simultaneously. The stem is further provided with a portion for engaging such legs at their respective offset locations to insure hole-filling and strong, firm setting of the collapsed legs against the work piece.

Abstract: A reusable two-piece fastener for releasably securing together a plurality of panels which have aligned apertures therethrough comprises a body member and an associated externally threaded screw member. The body member, which is molded of resiliently flexible compressible plastic, comprises a head at one end radially expandable/retractable legs at the other end. A cylindrical bore extends inwardly from the head end of the body member. Screw-engaging internal female threads are integrally formed on the bore wall and are arranged in axially spaced apart sets therealong, each set including a plurality of thread sections, each of which sections extends around only a part of the circumference of the bore. These female threads are resiliently movable radially outwardly either because they are inherently compressible and flexible (one embodiment) or because they are formed on outwardly swingable bore wall portions (another embodiment).

Abstract: An insert assembly includes a frustoconically shape cone nut (10), a cylindrical shell (20) and a bolt (36). The cone nut (10) has a longitudinal bore (12) which is tapped to accept the threads on the bolt. The shell (20) has projecting barbs (28) arranged in a helical pattern on the shell's outer surface. The assembly, comprising the bolt through the shell and threaded into the smaller diameter end of the nut cone, is driven into a bore in the work piece. The bolt is then rotated causing the cone nut to penetrate the shell resulting in radial expansion of the shell whereby the barbs become embedded in the work piece. A keying feature between the nut and the shell prevents nut rotation with the bolt.

Abstract: A one-piece self-retaining threaded plastic screw grommet including a head and bifurcated shank having a through bore through the head and shank. The slots which bifurcate said shank being generally tangentially disposed on opposite sides of the axis of said bore and the free end of said legs being interconnected by non-linear bendable web means that restrain the spreading of the legs when a complimentary screw is inserted within the bore.

Abstract: A fixing plug contains a metallic expanding sleeve having a slotted end portion or section. Engaging with this slotted end portion is an expanding element which contains a body formed of an oscillation damping material and in which there are embedded a conical sleeve and in axial spacing therefrom a connection element or part. The conical sleeve coacts with the slotted end portion. The connection part serves for the attachment of an attachment screw of the like and for drawing the expanding element into the slotted end portion of the expanding sleeve. At the end portion located opposite the slotted end portion there is arranged an internal lining formed of an oscillation damping material. This internal lining or covering is constructed as an insert body member and possesses a part which protrudes past the expanding sleeve. The fixing plug affords both good attachment properties and good oscillation damping properties.

Abstract: A mounting element for mounting an object on a support structure has an elongated expansion sleeve member insertable into a mounting hole of the support structure and having a longitudinal opening, and an elongated expander member insertable into the longitudinal opening so as to expand the expansion sleeve member and having a round thread and a pointed profile thread arranged on the peaks and/or valleys of the round thread and having a pitch corresponding to the pitch of the latter.

Abstract: Disclosed is a straddling dowel, of plastic, having a continuous screw insertion hole and several expansion segments that are formed by longitudinal slits in the dowel body and which extend from the circular head portion to the circular foot portion of the dowel. In the latter part, a female thread can be cut by the inserted screw, thereby rendering axial expansion of the dowel body posible. The expansion segments are formed by overlapping annular plates or discs which, on spreading or axial expansion in the form of an increase in diameter or spreading move relative to each other over the whole extent of the contacting surfaces of adjacent plates or discs, which contacting surfaces run obliquely or conically to the axis of the dowel.

Abstract: A fastener, comprising an expander part having a saucer-shaped head and a shank extending from the head and formed with a male thread thereon, and a fastener part having a flange and opposite stem portions branched from the back of the flange and connecting through hinge portions to guide portions which join each other at the other ends thereof, the expander part and fastener part each being made of a resin, the fastener part having a circular bore extending from the flange to the stem portions to permit the expander part to be inserted in and temporarily retained in the stem portions, the circular bore having therein opposite bulges positioned ahead of the hinge portions to spread the stem portions outward away from each other when the expander part is pushed.

Abstract: A fastener, comprising an expander part having a saucer-shaped head and a shank extending from the head and formed with a male thread thereon, and a fastener part having a flange and opposite stem portions branched from the back of the flange and connecting through hinge portions to guide portions which join each other at the other ends thereof, the expander part and fastener part each being made of a resin, the fastener part having a circular bore extending from the flange to the stem portions to permit the expander part to be inserted in and temporarily retained in the stem portions, the circular bore having therein opposite bulges positioned ahead of the hinge portions to spread the stem portions outward away from each other when the expander part is pushed.