Abstract: A wall anchor for installation in a hole drilled in a wall having a head, a barrel, and a pair of parallel fingers. The head is attached to one end of the barrel and the pair of parallel fingers are attached to the opposite end of the barrel wherein each of the fingers is provided with one end pivotally attached to the barrel and the opposite ends are free from connection whereby the fingers can be spread apart by driving a pin therethrough. The head and the barrel are provided with aligned circumferential bores extending longitudinally therethrough. A flat portion is provided along one arcuate segment of one of the bores.

Abstract: A reusable pin and grommet fastener where the grommet includes a head, a shank, an axial bore extending through the head and shank and two legs flexibly hinged to a distal end of the shank and extending outwardly away from the shank with a slight taper toward the bore. The pin includes a shank with a tapered distal end and a plurality of grooves formed about the shank so that after initial insertion of the grommet within an aperture of an article the pin can be inserted within the bore of the grommet to lock the grommet in the aperture of the article and the legs of the grommet readily can flex outwardly with a slight insertion force until seated within a groove of the pin which retain the pin in the grommet with a substantial predetermined removal force that nevertheless enables removal of the pin without damaging either the pin or the grommet.

Abstract: A unitized expanding dowel is disclosed for accurately and repeatably locating a part having a through hole relative to a reference part having a hole of like size. The dowel includes a radially expandable, resiliently deformable cylindrical sleeve having an axial passage therethrough. A portion of the passage is frusto-conically shaped to complement a tapered expansion pin movable within the axial passage in a first axial direction to force the outer surface of the sleeve to radially expand into tight surface engagement with inner surfaces of the holes. Coupling means connect the sleeve to the expansion pin and permit movement of the pin in an opposite direction to allow contraction of the sleeve away from tight engagement with the holes while preventing withdrawal of the pin from the sleeve passage.

Abstract: A fastener for securing a connector body over a hole in a printed circuit board comprises a clip rigidly supported by the connector body and a wedge supported by the connector body for sliding movement along the clip. In one form, the clip includes a pair of resilient arms having free ends extending outside the body. The resilient arms have teeth or other means near their free ends for engaging the inner surfaces of the hole. The arms converge toward each other near their free ends to retract the teeth when the arms are in an unengaged condition. The wedge includes a portion which extends between the arms for spreading the arms and teeth as the wedge slides along the clip toward the free ends of the arms. The fastener is secured in the hole by inserting the clip arms into the hole and pressing the wedge into the hole toward the free ends of the arms.

Abstract: A rivet fastener which can be readily and repeatedly removed and reinstalled including a rivet body and a drive pin where the drive pin can be inserted within the rivet body so as to retain the fastener within an article and upon further insertion of the drive pin the fastener is released from an article where the drive pin does not protrude from the back side of the rivet body either during fastening or removal thereof.

Abstract: A fastener mandrel has formed on one end a shoulder and a twisted, generally rectangular shaped head adjoining the shoulder. In setting the fastener in a workpiece, the shoulder enlarges the end of a tubular rivet and clamps workpieces together in combination with a preformed head on the other end of the rivet. The mandrel head deforms the rivet tail into a twisted appearing shape with a somewhat elliptical cross-section that partially encloses the mandrel head to provide good stem retention and prevent axial looseness. A plurality of axial ribs on the mandrel stem are drawn into a reduced diameter section of the rivet head end when the rivet is set, thereby providing additional stem retention and torsional interference.

Abstract: An anchor bolt for anchoring in a hole of an arbitrary component includes a tension bolt having a threaded portion and an adjoining frustoconical head portion. An expanding sleeve has a polygonal cross section, a female-threaded portion and an adjoining anchoring portion to be expanded in sectors by the frustoconical head portion of the tension bolt when the tension bolt is screwed into the female-threaded portion of the expanding sleeve. The polygonal cross section of the expanding sleeve has sides with middle regions and axially parallel predetermined breaking lines each being formed in the middle region of a respective one of the sides for dividing the sides into partial lateral surfaces. Each two of the partial lateral surfaces extend outwardly from a respective one of the predetermined breaking lines and rise toward one another at an obtuse angle.

Abstract: A gap sealer for covering the gaps between horizontally extending and vertically spaced apart sidewall panels on auto rack railroad cars and between sidewall panels and the floor, roof or vertical posts. The gap sealer is a single piece of extruded plastic having a head attachable to a flange of a sidewall panel and a tail or flap biasing against the flange of a vertically adjacent sidewall panel, the floor, roof or post, such that the body of the gap sealer covers the gap to prevent air passage. The gap sealer may also include a bumper which protects vehicle doors from contacting the sidewall panels and risking damage. An individual bumper may also be used to protect vehicle doors, and be attached to a sidewall panel by a unique fastener.

Abstract: Detachable device for joining together objects having holes intended to come into alignment, comprising:a tubular member made of an elastically deformable material and capable of passing through the holes when it is in the expanded state and of widening in order to be locked in the holes,an expansion rod sliding inside the tubular member and having a widened head,a body fastened to the tubular member and having a bore which extends the bore of the tubular member, and a support surface substantially at right angles to said bore,a locking member which can be immobilized at any point on the rod,an elastic member capable of exerting a determined force tending to move the body away from the locking member.The tubular member, the body and the elastic member preferably form a single piece.

Abstract: An improved pin drive anchor has an elongated body, a lock nut, and a drive pin having a securing section. The outer end of the body is threaded to permit the lock nut to be threadable therein. When the drive pin is driven into the anchor, the security section is designed so that the outer section of the body is expanded, thereby locking the lock nut onto the anchor.

Abstract: A two-part fastening clip made of a hard-elastic plastic material for fastening a piece of molding to a panel. The device includes an upper part having a cover plate, with the molding being secured to one side of the cover plate, a stopper element that extends perpendicularly out from an opposite side of the cover plate in a direction away from the molding and a bulge on its free end that tapers conically in both its axial directions. The device also includes a lower part that can be anchored in a hole in the panel and has a socket casing having a through opening therein for receipt of the stopper element of the upper part and a constricted edge in the opening behind which the bulge of the stopper engages to lock the two parts together.

Abstract: The present invention relates to a pin-type grommet made of synthetic resin. It relates to an improvement of a grommet in which elastic stoppers of a female member are pressed outwardly by press fitting an insertion pin so that the collar and the elastic stoppers of the female member securely hold a plate member, and in which the plate member securely held by the female member is released by screwing out a pin type male member inserted in the female member.

Abstract: A self-retaining adjustable diameter bolt with an adjustable nut including a bolt having a head, a shank, and a threaded end adapted to be inserted into a hole in an installation for subsequent coupling to an nut assembly. The bolt includes a pawl with a plurality of bushing segments mounted on the bolt shank, the pawl extending through an opening in the bolt adapted to engage the segments to stop withdrawal from the bolt. The nut assembly has a first portion threaded onto the threaded end driving the segments forward and filling the spacing between the hole and bolt shank. The nut assembly includes a second portion rotatable on the first portion which can be tightened against the panel installation. In this manner, full radial expansion of the segments takes place before the first nut portion bottoms out against the installation and the second nut portion can be then tightened against the installation.

Abstract: The invention concerns a multi-part dowel with an outer body (2), which has an approximately cylindrical shank (4) and an inner body (12). In the position of use, the outer body (2) and inner body (12) engage with each other in the same way as a multiple screw-thread. The outer body (2) has, in its solid shaft (4), helical grooves (8) which are positioned to form a star when viewed in cross-section and which form an internal screw-thread. The inner body (12) has matching helical ribs (14) also positioned to form a star. The pitch of the thread is greater than the length of the thread. In what is the front section of the outer body (2) when the dowel is used, the grooves themselves, or slots (10) aligned with them, extend to the outer wall of the outer body (2). The dowel can be used for fixing building materials, such as woven textile or fibre-glass materials, to outside walls, interior walls or ceilings.

Abstract: A tapered camming plug positioned within an expansion shell is threaded onto an upper end portion of an elongated bolt advanced behind a resin cartridge system into a bore hole drilled in a rock formation. A bearing plate is carried on the opposite end of the bolt and abuts the rock formation surrounding the bore hole. The cartridge is ruptured by upward thrust and rotation of the bolt to release the resin components for mixing. The mixed resin flows downwardly in the bore hole into surrounding relation with the camming plug and expansion shell. The expansion shell includes a plurality of expansion fingers each formed integral at one end portion with a ring end portion of the shell and extending upwardly to a free end portion for outward expansion into engagement with the wall of the bore hole as the camming plug advances downwardly on the bolt after the resin is mixed.

Abstract: An expanding anchor assembly which after securement can be simply released and immediately easily removed by hand from its embedment matrix substrate without damage to itself, the hole in which it was secured or the matrix substrate in which it was embedded.The anchor assembly 1 comprises one separate tubular sleeve 2, with a bore through its entire length, and another separate elongated cylindrical plug 3.Sleeve 2 has one integral securing component 4 end with parallel longitudinal slots 8 forming a plurality of resilient radially expanable tabs 9 with single internal circumferential protrusions 7 located a predetermined distance from their free end. The other integral joining component 5 end has a means of attaching selected separate objects thereto.Plug 3 is of a length equal to or less than the aforestated protrusion 7's predetermined distance and a diameter movable through bore of sleeve 2.

Abstract: A fastener including a body portion having a head member and a shank member integrally formed with one side of the head member, the head member including a central aperture and at least one flexible engagement member intergrally formed with the head member opposite the shank member and extending intothe aperture a predetermined distance, the shank member including at least two substantially resilient leg member each having a conically shaped interior surface which oppose each other forming a tapered axial bore through the shank member tapering away from and in cooperative alignment with the aperture and a drive pin having a predetermined length and cross-sectional configuration for complementary engagement with the aperture, flexible engagement member, axial bore and leg members, the drive pin icluding at least a first concave longitudinal channel formed along its length and extending into the drive pin which includes at least a first lateral ramp member extending across the width of the first channel for coo

Abstract: An expansion sealing plug having a frusto-conical plug body with peripheral U-shaped grooves, an expansion member comprising either an inner wedge pin or a spherical member, and a tapered coaxial bore for receiving the expansion member. The inner wedge pin has a greater average outside diameter and the spherical member has a greater maximum outside diameter than the tapered coaxial bore. The plug body and expansion member are proportioned to be readily preassembled such that the expansion member is frictionally retained after partial insertion into the plug body. The unexpanded plug is inserted into a counterbore that is reamed or formed with the same taper angle as the plug body and the expansion member is driven axially into the plug such that the plug body is radially expanded to forcibly engage the counterbore.

Abstract: A mounting assembly for fixing a panel to a space frame defining the general shape of an automotive vehicle that provides accurate, adjustable positioning of the panel with respect to the space frame and accommodates differential growth and shrinkage of the frame and the panel induced by temperature changes. The assembly includes a multi-piece fastener held axially and radially fast with respect to the space frame and axially and radially free with respect to the panel.

Abstract: A device for enabling a first part to be detachably assembled to a second part, the device comprising a first fastener and a second fastener fixed respectively to the first part and to the second part, assembly being obtained by engaging the fasteners along an "Engagement" axis, with engagement causing a retaining component of the first fastener to be inserted by deformation into a reception component of the second fastener, wherein:the first fastener is fitted with return means tending to move it away from the second fastener;the second fastener includes resilient means exerting pressure on the retaining component when inserted in the reception component to keep it therein, said resilient means being fitted with a return device to move them away from the retaining component during detachment; andthe retaining component and the reception component are complementary in shape.

Abstract: A vibration-resistant two-member fastening device characterized by quick lock and release. The first of the two members has an engagement edge which is adaptable to apply pressure on the second member. The second member has either a recessed surface or a threadline, the diameter of which decreases from a front point away from the head towards a back point close to the head.

Abstract: A threaded fastener and grommet assembly for joining two apertured parts. The fastener is retained in the grommet with axial play between the fastener and grommet. The assembly can also be retained in one of the apertured parts, and when this part is placed over the other apertured part, the axial play allows alignment of the fastener without ejection of the assembly.

Abstract: An expansible rivet for securing together overlapped panels comprises a female member having a plurality of elastic legs defined by a corresponding number of axially elongate notches and a male member having a body portion having axially elongate fins slidably received in the axially elongate notches and a conical free end portion. The fins serve to permit stable coupling of the two members. The conical end portion facilitates the insertion of the male member into the female member.

Abstract: The invention is directed to an anchoring bolt device for insertion into a material having a predrilled bore formed therein. The anchoring bolt device includes a sleeve-like body defining a longitudinal axis and having an upper portion, a mid portion and a lower portion having a bottom end face defining an opening. The body has a bore formed therein so as to extend along the axis and through the upper portion and the mid portion. A passage is formed in the lower portion of the sleeve-like body and extends from the bore and along the axis to terminate in the opening formed in the end face. The passage has a tapered inner wall surface so that the diameter of the passage becomes narrower toward the bottom end face. The lower portion of the sleeve-like body is partitioned into a plurality of legs extending in the direction of the axis. A ball is disposed in the bore so as to rest against the tapered inner wall surface and a thread is formed in the bore so as to extend along the upper portion.

Abstract: An assist strap is installed by rotating an assist strap handle to drive a mandrel, in the base of the assist strap, into a projection in a service on which the assist strap is mounted. An apparatus for mounting an assist strap in a motor vehicle includes projecting fastening means extending from the base of the assist strap and a mandrel mounted to slide between a first position disengaged from the fastening means and a second position wherein the mandrel engages the fastening means to limit the movement of the fastening means thereby locking the fastening means to the vehicle body structure. A handle may be mounted to the base for pivotal movement such that applying a force to the handle drives the mandrel from the first position to the second position.

Abstract: A locking bolt assembly that prevents the release of loose parts in the event of bolt failure. A bolt having a head and threaded main body portion is provided with a central bore through the head and main body portion. The central bore has a necked down area adjacent the end of the main body portion away from the head. A plurality of slots along the end of the main body portion in communication with the central bore form bolt fingers around the necked down area. A plunger slidably received in the central bore places radial pressure at the necked down area to expand the bolt fingers outwardly and lock the bolt in its installed position without changing the preload of the installed bolt. The plunger is retained in its bolt locking position and prevents the release of loose parts in the event of bolt failure.

Abstract: A one-piece, pre-shaped anchor adapted to be forcibly driven axially into a tightly-fitting hole so that the anchor makes a strong interference fit therein. The anchor is constituted by a drivable element and an elongated shank integral therewith. The shank is pre-shaped to have an end portion furthest from the element which extends in the direction of the longitudinal axis passing through the element and shank, and to have at least one undulation between the element and the end portion that creates a bend having a peak on one side of the shank between spaced apart base portions on the other side of the shank. The anchor is formed of resilient material, whereby when the shank is driven into the tightly-fitting hole, the undulation will then be forcibly altered by reaction with the wall of the hole, and in seeking to recover its originl shape, will secure the anchor in place.

Abstract: A locking apparatus intended to be anchored in the bore of an element and to receive rotatably by snap-in closure a mating element provided with an undercut head. The locking apparatus according to the invention includes a substantially cylindrical body having first and second ends. Outwardly directed gripping means are arranged in the peripheral surface of the body at its first end. The body has a coaxially arranged cavity which narrows toward an opening in the first end. The cavity extends to the second end of the body and the body is provided there with an inwardly directed flange. The body is expansible or flexible at the first end.

Abstract: Profiled bolt mounting unit for mounting on a structural member, comprising a blind rivet body having a sleeve and a flange for abutting against the structural member provided for mounting purposes with a mandrel having a setting head and a pull stem which may be gripped by a setting tool and detached from the mandrel at a predetermined breaking point (break neck) after exceeding a certain pulling force. The predetermined breaking point is separated by such a distance from the flange that the portion of the mandrel between the flange and the predetermined breaking point acts as a profiled bolt, whereby the mandrel portion remaining inside the blind rivet body after the setting process projects the profiled bolt portion away from the flange.

Abstract: A screen lining is disclosed which includes at least two screen elements (1), a supporting substructure (6), a plastic section (5) and bolts (10). The screen elements (1) each have a lateral edge and are positioned next to one another. The plastic section (5) has an upper region (4), an underside, and extends above and parallel to the substructure. Included within plastic section (5) are a plurality of projections (7) positioned along the plastic section underside which are fastened with a locking effect to the substructure. Also inlcuded within the plastic section is a plurality of vertical orifices (9) centrally positioned at intervals within that section and passing coaxially through the projections (7). Bolts (10) are inserted from above with a locking effect into the orifices. Each bolt includes a bolt head (12) which forms a portion of the plastic upper region (4).

Abstract: A mechanical anchor including an expansion shell and an expansion plug positioned in the shell is engaged with the end of a bar having helically extending rib segments formed on the outer surface of the bar. The expansion plug has an internal bore defining a wall having a configuration to receive and mate with the helically extending rib segments formed on the outer surface of the bar. The mechanical anchor and a portion of the bar are inserted in a bore hole drilled in a rock formation and, upon rotation of the bar in a preselected direction, the expansion plug nonrotatably moves down the bar to expand the shell into engagement with the bore hole wall. As the shell engages the bore hole wall, the bar is mechanically anchored within the bore hole by the mechanical anchor.

Abstract: A tamper resistant end closure for a container includes a base for closing an end of the container and a rotor pivotally connected to the base by a hub in the form of a hollow stem extended through a center opening in the base. An annular flange at the lower end of the stem retainably engages a lower surface of the base, and a plug is driven into and bonded within the stem, after the rotor is connected to the base, to inhibit removal of the rotor by preventing radially inward movement of the flange. The rotor and plug may initially be integral, such that an end of the plug is attached by a frangible web to the rotor, at an end of and in alignment with the passage through the stem. The frangible web is broken when the plug is driven into the stem.

Abstract: An anchoring system in concrete having a predrilled hole with an undercut. The anchoring system includes a cylindrical rod that is threaded at one end and has a trunk conical head at the other end. A sleeve extends over the lower portion of the cylindrical rod above the trunk conical head. The cylindrical rod is inserted into the hole so that the sleeve is adjacent to the undercut. The sleeve is fixed against being subsequently withdrawn. The cylindrical rod is then rotated relative to the sleeve thereby lifting up the trunk conical head into the sleeve so as to press against and thereby expand the sleeve outward against the walls of the undercut.

Abstract: A fastener for securing two objects or structures together in a predetermined relationship. The fastener has a fastener body including a spacer which defines a predetermined distance between the two objects. A first locking element is attached to one side of the spacer and a second locking element is attached to the other side of the spacer. The fastener body is adapted to receive a plunger which when actuated will cause the locking elements to secure the first object and second object a predetermined distance apart.

Abstract: An expansible anchoring plug for anchoring by impact in undercut pre-drilled holes, especially in holes which are widened towards their inner end, comprises an expansible sleeve which has an internal bore and which it is slotted over a part of its length and which can be anchored by driving it onto an expander body provided with an expander cone located at the bottom of the pre-drilled hole. The expander body is provided with a tubular extension engageable in an internal bore of the expansible sleeve. The end of the extension, once the expansible sleeve has been driven onto the expander body, is located in an enlarged portion of the internal bore of the expansible sleeve and is secured therein by a wedge.

Abstract: A fastener is provided for fastening together overlapping panels made from relatively soft materials, such as fiber reinforced composite materials, substantially without damage to the panels. The fastener comprises a generally tubular fastener body received within the openings of the panels. The fastener body has an enlarged body head for engaging the outer panel, an annular sidewall extending through the panel openings, and an endwall at the inner end of the fastener body. A plug having a tapered inner nose is positioned within the upper region of the fastener body in abutting contact with the body head and contiguous sidewall, and an annular sleeve is positioned within the lower region of the fastener body between the plug and endwall. During setting of the fastener, the sleeve deforms over the tapered nose and laterally expands the contiguous sidewall outwardly into a fully set condition in overlying contact with the outer surface of the inner panel.

Abstract: A support brace assembly for shelves such as shoe shelves has an integrated unitary structure comprising a truss with a lower leg having a support rib and a foot which rests stably against a wall. This leg is joined as by a gusset and a strut to an upper leg which has reinforcing ribs, with a front hook integral with the truss and for receiving a shelf rod so that the rod may be received within the hook bite with the bite gripping the rod. A rear resilient hook is integral with the upper leg and has a bite to receive another shelf rod flush against the bite. The upper leg has a foot which rests against the wall. The rear hook is spaced from the foot so that the passage between the tip of the rear hook and the foot is less than the thickness of the shelf rod received by the hook so that when the rod is moved through the passage, the rear hook expands to allow entry of the rod and snaps back to hold the rod in position. The foot of the upper leg has a wall anchor integral therewith.

Abstract: A fastener-carrier system comprises at least one metallic threaded fastener member including a head portion, a tip portion and an externally threaded shank portion intermediate the head and tip portions and defining an axis. A carrier strip comprises a substantially flat, elongate member of a moldable material and the fastener head portion is moldably embedded into the carrier strip with the tip and threaded shank portions projecting outwardly of the carrier strip. The carrier strip includes a substantially flat workpiece-engaging surface, with the fastener extending outwardly thereof for extending into a receiving aperture in a facing workpiece surface. A raised, elastically deformable skirt portion is provided on the workpiece-engaging surface surrounding each fastener for positively engaging the workpiece surface and for deforming sufficiently thereagainst to form a seal completely around an otherwise exposed portion of the fastener at the workpiece-engaging surface.

Abstract: An expansion bolt assembly for use in boreholes with an annular undercut adjacent the base of the boreholes includes an axially elongated anchor bolt, a support sleeve laterally enclosing the anchor bolt with annular segments formed on the support sleeve, and an expansion sleeve to be inserted between the anchor bolt and the support sleeve. The annular segments are displaced radially outwardly by the expansion sleeve into the undercut in the borehole. The annular segments extend radially outwardly from the outside surface of the support sleeve. During the expansion procedure the outer surface of the support sleeve is pressed against the surface of the borehole.

Abstract: An expansion dowel is made up of an expansion sleeve and an expansion body with a radially outer conically shaped surface. To expand the sleeve, the expansion body is pulled into the leading end of the sleeve. The leading end of the sleeve is connected to the expansion body by two elongated webs. A bridge section on the end of each web forms the connection to the expansion body and the bridge section is breakable under expansion conditions. The expansion dowel can be formed from a single blank of sheet metal in a forming operation.

Abstract: An anchor having a shank, a reduced neck portion on the inner end and a tapering portion, and engagement means on the outer end and having a one-piece wedging collar arranged around the reduced neck portion, and having an overlapping portion extending partially up the tapered portion, and such collar having a leading and a trailing end and an axial slot extending part way therethrough from the leading end, near the tapered portion and terminating at a bridge portion, near the trailing end and at least two generally dome-shaped bosses formed in said collar, extending outwardly, and defining a maximum spacing there between greater than the diameter of the shaft shank of such anchor, the bosses being located between the leading end, and the bridge portion, on either side of the axial slot.

Abstract: Coupling of two flanged shafts end-to-end by means of taper pin bolts and expansion sleeves cooperating with the pin bolts and having the same conicity, said sleeves extending into bores provided in said flanges and said pin bolts having external threads on both ends, a first end being located on the small side of the taper cone and a second end on the large side of the cone, is accomplished by:(a) inserting each pin bolt together with its sleeve into the corresponding bores,(b) screwing a nut onto the first end of the pin,(c) exerting a tractive force on the second end by means of a cylinder, the nut of the first end bearing against the corresponding flange,(d) while maintaining the tractive force on the second end, applying a nut against the second corresponding flange by screwing the nut up on the second end of the pin bolt,(e) and pushing back the sleeve toward said second end and cancelling the action of the cylinder.

Abstract: An expansion anchor assembly for use in a bore with an undercut section adjacent the base of the bore, includes an axially elongated expansion sleeve and an anchor bolt positioned within the sleeve with an expansion cone at one end of the bolt. The expansion sleeve is slit from one end for a portion of its axial length. By drawing the expansion cone into the slit end of the sleeve, the sleeve can be expanded. An expansion element is seated within a recess in the outside surface of the sleeve. The base of the recess has a decreasing depth in the direction toward the slit end of the sleeve. The expansion element secures the expansion anchor assembly within the bore.

Abstract: The invention is a blind fastener of the type having a hollow sleeve, spindle, and locking collar. The fastener differs from conventional blind fasteners in that the spindle has a cold work mandrel portion between the pull stem and shear pin portions thereof. Furthermore, all the principle dimensions and tolerances thereof are based on the sleeve shank outer diameter. The more important dimensions are the sleeve inside diameter of between 0.9000 times the minimum sleeve outer diameter and 0.8964 times the maximum sleeve outer diameter, the shear pin diameter of the spindle is between 0.9632 times the minimum sleeve outer diameter and 0.9534 times the maximum sleeve outer diameter and the tapered cold work mandrel portion larger diameter is between 0.9684 times the minimum sleeve shank outer diameter and 0.9585 times the maximum sleeve outer diameter.

Abstract: An anchor dowel assembly includes an axially elongated sleeve with window-like openings extending through its wall transversely of the axial direction. Locking members are positionable within the window-like openings for displacement radially outwardly from the sleeve for effecting the anchoring action. The locking members are displaced radially outwardly by an expansion tool driven between the locking members by a force directed in the axial direction of the sleeves.

Abstract: A fastener comprises two, i.e. male and female, members for coupling together a plurality of panels in a spaced-apart and face-to-face relation to one another. The female member has a locking body portion and also has locking pawl portions united by hinge portions to the locking body portion for flexing with respect thereto. The male member is fitted in one of two panels and detachably coupled to the female member fitted in the other panel.

Abstract: The present invention relates to a plug-containing type internally threaded anchor to be set in concrete which is used to optionally and firmly fix hardware, such as ceiling members, floor members and wall members, to the surface of a concrete structure and it also relates to a method of producing the same which promises mass-production effect. The invention is characterized in that as a means for preventing the plug contained in the anchor body from accidentally slipping off owing to vibration, shock or other external forces exerted during transport or laying operation, the anchor body is formed with an internal thread by rolling whose internal diameter is smaller than the outer diameter of the plug, so that the crest portion of the internal thread bulging by a predetermined amount above the anchor body holds the plug in slip-off preventing condition.

Abstract: A protective/decorative liner panel is mounted on a sheet metal support panel by molded plastic fasteners which allow the liner panel to be subsequently detached and reattached. Each fastener comprises a pin which is initially joined to a hollow grommet by a frangible web which aligns the pin shank with a bore in the grommet. The pin head is manually and twistably engageable with an installation hole in the liner panel and then the grommet is axially engaged with an installation hole in the support panel as the liner panel is moved toward the support panel. A hammer blow on the pin head fractures the web, forces the pin shank into the bore and moves the liner panel to its mounted position relative to the support panel. Serrations on the pin shank frictionally engage the bore wall to hold the pin and its attached liner panel in mounted position.

Abstract: A plastic rivet consisting of rivet body comprised of a flanged head and a leg member extending from the bottom of the head, the rivet body having an axial hole extending through its entire length, and a pin which when inserted into the through-hole, expands the leg member. The leg member of the rivet body is provided with a movable leg which is deflected outward when the pin is inserted into the through-hole of the rivet body so as, for example, to catch and hold a pair of plates through which the rivet body has been passed between the head of the rivet body and the deflected movable leg. Pushing the pin further into the rivet body causes the deflected movable leg to return to its normal position, whereby the fastening action of the rivet is released.

Abstract: A device is provided which can join pre-drilled substrates such as panels, and can establish a threaded attachment post securely anchored to a substrate. The device is comprised of a hollow sleeve, and an internal rotatable core. When the device is inserted into a hole, and the core is rotated relative to the sleeve, prongs in the inserted extremity of the sleeve are forced into tight engagement with the hole. The opposite, uninserted extremity of the sleeve is provided with external threading, useful for general mounting purposes.