Abstract: The invention relates to a fixing element (1) for anchoring in an undercut drilled hole. The fixing element (1) has a shank portion (2) and an expansion element (3), there being arranged on the shank portion (2) an expander body (8) for expanding the expansion element (3) and a load-application means (7). The expansion element (3) is sleeve-like, having at its end that is at the rear in the direction of introduction (E) a ring-shaped main body (13) at the introduction end of which there is arranged an expansion lobe (10) having an opening (17).

Abstract: The invention relates to a fastening device for furniture fittings on furniture parts, comprising at least one dowel core that can be inserted into a hole of a furniture part, the dowel core being arranged inside a dowel sleeve, and an actuating device, by means of which the dowel sleeve can be moved relative to the dowel core, wherein the dowel sleeve spreads on the dowel core, wherein the dowel core is radially resilient.

Abstract: A wall anchor for a screw, including a longitudinal axis, a cylindrical head collar at one end, a cylindrical tail collar at an opposite end, and a plurality of plastically deformable substantially longitudinal bars which connect the head collar to the tail collar. The head and tail collars have internal passages for a threaded screw shaft. The head collar has a transverse flange for abutment with a screw head. The tail collar has a nut for engagement with a threaded screw shaft. The nut includes a stack of at least three rings arranged substantially transverse the axis upon an annular end face of the tail collar. An internal hole though each ring is substantially coaxial with the axis, and a side of each ring is connected to the tail collar by a web. An assembly of the wall anchor and screw, and a method of manufacturing are disclosed.

Abstract: The blind rivet for fastening together a plurality of mounted components with mounting holes comprises a rivet body having a sleeve, a flange and a through hole; a mandrel having a slender stem and a head; and a washer. The head of the mandrel is adjacent to the sleeve-side end portion of the rivet body, the stem of the mandrel extends through the rivet body from the flange-side end portion, and the washer is mounted near the flange on the outer periphery of the sleeve of the rivet body. A portion of the outer peripheral surface of the sleeve adjacent to the flange is swaged to form a recessed portion so that the diameter in the other position is enlarged. The washer is pushed onto the enlarged-diameter portion and secured. The mounted components are fastened together between the enlarged end portion of the sleeve and the washer.

Abstract: A method and an anchor for supporting items on a substrate such as drywall. The anchor comprises a structure configured to carry the anchoring element in a minimal cross section configuration through an insertion hole and to effect a first expansion. The anchor further comprises an adjustable cap member configured to be moved to fixedly position the anchoring element to the non-accessible side of the substrate. The anchoring element comprises a base channel member, a top channel member, and a connector-pivoting element configured to pivotally connect the top channel member to the base channel member. The top channel member is configured to be nested with the base channel member in the minimal cross section configuration and to be pivotally rotatable via the connector pivoting element in the plane parallel to the non-accessible side of the wall, with the pivotal rotation of the top channel member providing the second expansion.

Abstract: A drop-in anchor includes a tubular sleeve having a first end and an expandable second end, the sleeve including one or more indicator surfaces offset from the first end along a sleeve axis of the sleeve. A plug is insertable in the sleeve such that when the plug is driven into an installed position in the sleeve, the second end expands and an installation tool interacts with the first end to provide a visual indication, due to contrast in appearance with the one or more indicator surfaces, of engagement of the drop-in anchor to a workpiece.

Abstract: A method and a system for punctual fastening a waterproofing and protective membrane (13) of plastic material, for protective and waterproofing surfaces (19) of hydraulic works (10), such as canals, tunnels, dams and the like. In relation to surface areas subjected to fluid and/or wind actions, the protective membrane (13) is fastened to the concrete structure (11) of the hydraulic work and/or to ground (37) by a system of punctual fastening devices (15, 16).

Abstract: In one embodiment a method to join a first structure to a second structure, comprises aligning a first hole in the first structure with a second hole in the second structure and inserting a fastener into the first hole and the second hole. The fastener comprises a shape memory alloy which was formed into a first shape having a diameter slightly larger than a diameter of the first hole and the second hole when the shape memory alloy was in an austenite state and reduced to a second shape having a diameter less than the diameter of the first hole and the second hole when the shape memory alloy was in a martensite state.

Abstract: The invention relates to a fixing device for anchoring in a building material, comprising a fixing element with an axial conical anchoring region and a fixing region and a radially flexible clamping sleeve which may be clamped between the anchoring region and the building material. The invention further relates to a method for anchoring the fixing device.

Abstract: A workbench anchor utilizing counter acting wedges configured to expand laterally as they are drawn together longitudinally in order to lock the anchor in a workbench dog hole or other suitably sized hole by tightening a screw that passes through one wedge and into a threaded hole in a second wedge. Another threaded hole in the anchor can receive a screw or bolt for securing work pieces, jigs, fixtures or other structures to the anchor and, thereby, to the bench in which the anchor or anchors are mounted. An optional O-ring or other friction-increasing structure facilitates securing the anchor in and removing the anchor from the workbench by preventing the anchor from falling through the dog hole or other hole in which it is being positioned or from which it is being removed.

Abstract: A pin assembly for providing a stable anchor on multiple ends has an axle having a pair of end members formed on each end of the axle. The axle is placed in a first opening in a first mounting end of a component part and extends to a second opening in a second mounting end of the component part. A bearing is mounted on a central section of the axle. A spacer is positioned between the bearing and one of the first or second mounting ends. A pair of expansion sleeves is provided wherein one of the pair of expansion sleeves is positioned over each of the end members of the axle. A pair of locking devices is provided wherein one of the pair of locking devices is coupled to each of the end members. When tightened, the locking devices cause the expansion sleeves to press against interior walls of the first and second openings to anchor the axle.

Abstract: A self-drilling anchor screw includes a shaft member. A drill bit portion is located at a first end of the shaft member. A threaded shaft portion is located along at least part of the shaft member. A transition shaft portion is located between the threaded shaft portion and the drill bit portion. A nut has nut threads adapted to thread onto the threaded shaft portion of the shaft member. The nut is located on the threaded shaft portion. A sleeve is located about the shaft member. At least part of the sleeve is located adjacent to the transition portion, and is capable of sliding along the shaft member for engaging the transition portion. A nut stop portion is located at a second end of the shaft member. The nut stop portion is adapted to prevent the nut from being unscrewed from the threaded shaft portion at the second end of the shaft member.

Abstract: The present invention relates a system to be used with an implanting tool having a tip part. The system has a longitudinal axis and comprises a polymeric screw (31) having a head (11) and an adapter between the screw (31) and the implanting tool. The adapter comprises a first part (32) which fits the tip part of the implanting tool. The first part comprises a first element and the system comprises a second element. The first element and the second element are connected to each other with a torque limiting junction having a first maximum torque when the screw is screwed in and a second maximum torque when the screw is screwed off. The shape of the first element and the second element is such that the second maximum torque of the torque limiting junction is greater than the first maximum torque, thus allowing the removal of the polymeric screw (31) from its position.

Abstract: A clip engages an assist grip with an engaging portion of the clip engaged with a clip insertion hole of an attachment part. The assist grip is mounted to a body panel by engaging a first locking pawl of the clip with a rear surface of the body panel, and engaging a second locking pawl of the clip with a front surface of the body panel. A pressure plug is fitted into a rear end gap portion of the clip when a cap on the attachment part is closed.

Abstract: A device (1) for detachably connecting two abutting structural parts (2, 3) comprises a tie member (4), adapted to be at least partially inserted in a recess (5) formed in a first (2) of the structural parts (2, 3), and a locking element (6) operable to be disposed in a second (3) of the structural parts (2, 3) and to cooperate with an engagement surface (14, 45) of a rod member (10), slidably housed in a body (8) of the tie member (4), to pull the same towards the second structural part (3). The body (8) is provided with a first, expandable, portion (9) adapted to frictionally engage the recess (5) and with an engaging zone (13) cooperating with an expander region (12) of the rod member (10) operable to expand the first, expandable, portion (9) of the body (8) upon displacement of the rod member (10) relative to the same.

Abstract: A method and apparatus removably and replaceably mounting a member in a hole that provides sufficient support for the member while also improving installation time of the anchor holding the member in place includes use of a drive anchor system. The drive anchor system includes a drive anchor. The drive anchor includes a hollow shaft having an internal chamber, an external wall, a first end, and a second end. A surface feature is disposed on the external wall for providing anchoring functionality. A bifurcating crevice extends from the second end of the hollow shaft toward the first end of the hollow shaft, and creates a first leg and a second leg of the hollow shaft. A member coupling is sized and dimensioned to fit within the internal chamber of the drive anchor, such that the member can couple with the member coupling.

Abstract: A fitting to be removably fastened to a furniture part includes a body, at least one expanding plug anchored in the body, and a pin-shaped expansion part. The body has a projecting supporting throat to protrude into a cavity in the furniture part. The supporting throat has at least one recess into which a projection on the expanding plug extends.

Abstract: An anchor device is provided which makes it possible to fasten various members or instruments to the wall to the back of which hands cannot reach with a bolt.

Abstract: The expanding sleeve (2) of the anchor is arranged around a threaded shank (9) engaged in a plug (3) for expanding the sleeve (2). The sleeve (2) comprises an axially compressible portion (16) which comprises means (24) that can be sheared and which are arranged so that after they have been sheared they allow the sleeve (2) to be shortened axially. The sleeve (2) consists of a cut-out sheet-metal blank rolled up on itself.

Abstract: A releasable latching apparatus and method of operation for securing a component of a computer system to a computer housing. The latching apparatus includes a casing and a shaft integrated with the casing such that the shaft is operable to move relative to the casing. Incorporated into the latching apparatus is a collet that extends along the shaft. The collet includes a locking portion, which can releasably secure a computer component to a housing by extending away from the shaft and capturing an element of the computer housing.

Abstract: A fastening element for attaching plate-shaped boards, and including a large-surface clamping member (2;22) with a hollow-stem (3;23) projecting from opening in the clamping member (2,22) with a hollow stem (3;23) projecting from and having a bore (5;25) opening in the clamping member (2;22) for receiving an expansion member (14) for an anchoring member (4;14); and a plug-shaped member (9;29) attached to the clamping member (2;22) with a strap (8;28) for closing the bore and having a plug-in section (11) with a sealing surface (12;32) sealing by cooperating with the bore wall and is force-lockingly retained therein, with the plug-in section (11;31) having at least one recess (13;33) provided with an undercut and a largest diameter of which corresponds to a diameter of a stem (15) of the expansion member (14) for enabling the closing member (9;29) to eclipse the shaft (15) of the expansion member (14).

Abstract: A fastener for holding items to a perforated wall, including fasteners for consumer and commercial uses and in displaying collector items or goods for sale, or for supporting heavy items, or for supporting shelves, platforms, wire frames and similar items on a perforated wall, the item holder having a base member with a fastener insertable into the perforated wall. The fastener has a projection with an axis preferably, but not necessarily, perpendicular to the wall and an axially extending passageway, at least a portion of the projection being displaceable laterally of its axis. An elongated pin, plunger, or cam member is insertable into the passageway in an insertion direction and is effective to displace the projection portion laterally of the projection axis for mounting the item holder to the wall. The locking mechanism may be operated by movement of the pin, plunger, or cam member axially or radially of the fastener. No tools are needed to lock or release the item holder from the perforated wall.

Abstract: A fastening incorporates a tubular rivet (11) passing through an aperture in a workpiece (17, 19). The rivet has a tubular shank (15) which is deformed outwardly to retain the rivet in the aperture, the extent of the deformation being such that the tubular shank is rolled outwardly, for example through an angle greater than 180.degree., forming a toroid in which material which was originally on an inner surface of the tubular shank prior to deformation is on an outer surface of the toroid and able to contact the workpiece (19) and also that material which was originally on an outer surface of the tubular shank prior to deformation is on an inner surface of the toroid and is distant from the workpiece. The deformation is referred to as a "full-roll".

Abstract: Fastening devices are disclosed for joining a pair of objects displaced from each other, the fastening device including a sleeve affixed to the first object, a spacer movably disposed within the sleeve and adapted to abut against the second object, an expansion plate adapted to bear against the spacer within the sleeve and a fastening screw for interacting with an aperture in the second object such that when the fastening screw is tightened the expansion plate is pressed against the spacer and is thereby expanded to lock against the sleeve.

Abstract: A roller positioning system for use in a variable pipe diffuser having inner and outer rings. The roller positioning system having at least three axle shafts having a cylindrical body positioned about a first centerline and having a bore disposed axially therethrough about a second centerline. A roller bearing is rotatably mounted to the body of each of the at least three axle shafts. The at least three axle shafts also having a pair of shoulders positioned on either side of the body concentric about the second centerline. The at least three axle shafts circumferentially disposed in the outer ring about the shoulders in a diameter such that the roller bearings nearly contact the outside diameter of the inner ring. The at least three axle shafts rotatably operable to effect an adjustment of the roller bearings about the second centerline such that the roller bearings are brought into contact with the inner ring.

Abstract: An optical axis adjustment structure which includes an aiming adjustment screw having a ball part disposed at one end thereof for receiving and being supported by a movable part of a lamp or the like, an intermediate part screw-engaging with a nut member fitted in a stationary part of a vehicle body or the like, and an operating part disposed at the other end thereof for a rotational operation, and the outer dimension of the operating part of the aiming adjustment screw is designed to be larger than the threaded intermediate part of the screw and the outer diameter of the ball part is larger than the diameter of the threaded part of the screw, while the nut member is integrally molded with the aiming adjustment screw at the intermediate part thereof.

Abstract: Spreading dowel, consisting of a dowel component (15) and a non circular spreader screw (1); whereby, the inner notch (17) of the dowel component (15) is fitted in its form for the outer contour of the spreader screw (1); whereby, the spreader screw (1) has one or more thread convolutions (9). By means of these thread convolutions (9), twisting the spreader screw (1) achieves the spreading expansion of the dowel component (15) together with an axial shifting of the spreader screw (1).

Abstract: A blind rivet comprises a rivet body with an axial through bore, a head at one end and inwardly extending lugs at the tail which are provided with recesses. The rivet may be set by a tool having lugs adapted to engage in the recesses, and may be used as a drainage passage or as part of a releasable fastener.

Abstract: In an expansible fixing plug having an internal bore passing right through the plug body into which an expansion bolt in the form of a nail or screw is to be driven, the internal bore is arranged helically wound around the center line and at least for a part of its length has a diameter that is the same as or slightly smaller than the outer diameter of the expansion bolt.

Abstract: Anchor structure suitable for retentive placement in a borehole, whereby to anchor an elongated anchor bolt in a fixed position within such borehole; the anchor structure is designed for mechanical and also setting-medium system securement within the borehole, the mechanical structure utilized being radially expansive and, by such means, offering an immediate anchor by which the setting-medium used is given time to set up.

Abstract: A locking assembly is formed of a first article (40), a second article (44), and a locking fastener (46) positioned between the two articles and made of a shape memory alloy material. The locking fastener (46) is dimensioned to have a first shape below the transformation temperature wherein the first article (40) and the second article (44) are not locked together, and a second shape above the transformation temperature wherein the first article (40) and the second article (44) are locked together by the locking fastener (46). In one form, the first article (40) has a cylindrical bore (42) therein, the second article (44) is a cylinder that fits within the bore (42), and the locking fastener (46) is a helical coil or an annular ring having a radial slot therethrough, placed between the cylinder and the wall of the bore.

Abstract: An escutcheon used with a plumbing fixture that is recessed in a wall and that has a part projecting through the wall itself has a plate shaped to fit around the part flatly against the wall and formed offset from the part with a throughgoing hole. Structure fixed relative to the fixture forms a throughgoing hole offset from the part snugly receiving a radially expansible anchor tube also extending through the plate hole and having an enlarged head lying against an outer face of the plate. A screw engaged in the tube radially expands same into tight engagement with the structure hole.

Abstract: A device to detachably connect two, e.g., plate-shaped subassemblies, includes a control element with a projecting retaining portion which can be inserted into aligned openings of the subassemblies and with a head portion to be braced against the first subassembly. The projecting retaining portion has at least one lateral first recess to receive and engage with at lest one locking element of a holding element. The locking element yields flexibly and resiliently when inserting the control element into the holding element. The holding element also has expanding elements to brace against a rear side of the second subassembly. Both the control element and the holding element can be inserted individually in succession or together from a front side of the first subassembly into the aligned openings. The holding element with the expanding elements can be inserted into the openings.

Abstract: A fastening element for a member provided with a fastening bore, preferably for a hinge member, consists of a dowel-shaped sleeve insertable in a pre-drilled hold, in the through hole of which a pin provided with a head can be locked by about a quarter turn. To achieve a fast and easy assembly, the sleeve consisting of elastic material is provided in the vicinity of its tubular shank with a least one longitudinally extending slot. In the slotted portion the hole has a longitudinal cross-section. The shank of the pin has at least one section with a diameter approximately corresponding to the cross-section of the hole, which on its opposing narrower sides is provided with peripherally extending thread-like cutting webs.

Abstract: An expansible plug for anchoring in conical inwardly expanding drilled holes comprises multi-slotted expansion anchor having an inner opening with a cylindrical part, and an expander body having a bearing slope and a pin engaging in the inner opening of the expansion anchor, the inner opening of the expansion anchor having a front end provided with a funnel, a conically expanding first portion adjoining the funnel and a second portion having a length corresponding to the length of the first portion and reducing to a diameter of the inner opening. The bearing slope of the expander body rests in the funnel of the inner opening of the expansion anchor and is held by a peg clampingly engaging in the cylindrical part of the inner opening.

Abstract: A one-piece molded plastic nut for receiving a screw adapted to retain a trim assembly to a panel having a slot. The plastic nut has a head having a bottom surface and a top surface with a trench molded into the head and opening onto the top surface. The trench has a bottom face with three holes molded in the bottom face of the trench that extend through to the bottom surface of the head with the holes adapted to receive the screw. The trench has a pair of opposing facing planar side walls and a pair of opposing facing planar end walls angled towards the bottom face for guiding the screw towards one of the holes in the bottom face. Two flexible webs are spaced between the holes and conform to and engage the screw when inserted into one of the holes. A pair of legs mirror each other and are adapted for insertion into the slot for engaging the panel and retaining the plastic nut to the panel. Each leg has an inner surface having a series of molded curved surfaces aligned with the holes in the head.

Abstract: A two part screw anchor which is interconnected by capturing a pin on the receiving bore of a cap in an arcuate slot on the received cylinder of a collapsible part. The collapsible part is metal and the cap (and hence pin) are plastic so that by pushing the collapsible part away from the installed cap the pin will be severed and the two parts can be separated.

Abstract: A vehicle plastic panel is mounted by means of a one-piece molded screw anchor on a substructure member in a bi-directional tolerance compensating manner. The screw anchor is adapted for snap-in capture in a substructure elongated rectangular aperture enabling it to slide along the aperture major axis. Upon the insertion of a self-tapping screw in a panel circular opening overlying the screw anchor, the screw tip enters the anchor upper lead-in chamber. If the screw and anchor are misaligned, the screw tip contacts a subjacent one of a pair of opposed anchor ramped side surface portions whereby the anchor is cammed for limited adjustment along the aperture major axis. The anchor ramped surface portions terminate in a lower, elongated channel extending transverse to the major axis. The anchor base wall is adapted to be threadably engaged upon driving the screw at a piercing point in vertical alignment with the panel opening.

Abstract: A blind riveting nut comprises a hollow shank portion and a setting head thereon at one end thereof. Towards the other end the shank portion has an internal screwthread for receiving the pulling mandrel of a blind rivet setting tool while at the end remote from the setting head, the shank portion has an element which closes off the interior of the shank portion at that end but which can be removed from its closure position. The closure element may be of various configurations including a ball and a portion of closure material fitted over the appropriate end of the shank portion.

Abstract: A screw grommet includes a flange having a screw insertion hole and a sack-like body integral with the flange. The sack-like body is inserted through a hole formed within an object to be fastened and has an inner axial screw guide channel communicating with the screw insertion hole for receiving and guiding an inserted screw, and a plurality of hill-like portions formed upon the outer periphery thereof and projecting axially while leaving a gap between the upper end of each hill-like portion and the lower surface of the flange. The gap serves as a fulcrum point about which the hill-like portions can in effect pivot in order to generate a wedging action upon the object being fastened when the screw is inserted within the screw guide channel.

Abstract: A fixing device 30 is provided for securing two members, one of which is formed with a groove, together in a predetermined angular relationship. The device includes two limbs 32,34 having respective free ends 36,46 located at the same end 49 of the device, the limbs being arranged to act as levers which, when pushed towards each other at a predetermined position, cause the free ends 36,46 to move apart to engage walls of the groove. The device 30 also advantageously includes a necked slot 50 for receiving, for example, a screw, for securement to the one planar surface, which necked slot co-operates with the screw such that the screw will push the limbs together in order to effect said engagement as the screw secures the device to the ungrooved member.

Abstract: An improved expansion assembly for a mine roof bolt for use in a nominal one inch diameter bore hole with a nominal 5/8" diameter roof bolt is provided. The expansion assembly has a tapered plug with four tapered surfaces, an expansion shell that has four leaves extending axially upwardly from a support ring and into contact with the four tapered surfaces on the tapered plug, and a threaded support washer to support the expansion shell on the threaded end of a mine roof bolt. The tapered plug has a threaded bore therethrough for threading onto the mine roof bolt. The tapered plug tapered surfaces have an angle of taper of at least 6.5.degree. to the axis of the mine roof bolt. The expansion leaves each have seven serrations formed on the surface such that the serrations are formed by the intersection of a planar surface perpendicular to the axis of the mine roof bolt and a frusto-conical surface. The frusto-conical surface is at an angle of 72.3.degree. to the planar surface.

Abstract: An axially elongated performed tube having a leading end and a trailing end. The tube is restricted at its leading end and open at its trailing end for the insertion of an adhesive and a ram to extrude the adhesive. The tube is selectively divided along its length into a plurality of porous axial sections, each section having a porosity different from that of its adjacent section, enabling selected distribution of the adhesive in selected areas.

Abstract: The apparatus for anchoring a bolt includes an elongated bolt with a threaded portion located at a preselected position along the length of the bolt and spaced from the end portions of the bolt. An expansion shell assembly is positioned on the bolt with the camming plug portion threadedly secured to the bolt threaded portion so that the expansion shell assembly is positioned in spaced relation to the ends of the bolt. In one embodiment, the threaded portion of the bolt includes a threaded sleeve suitably secured to the bolt at a location between the end portions of the bolt. In another embodiment, the bolt has a threaded portion located between the unthreaded end portions and a C-shaped stop member is secured on the lower portion of the threads. A camming plug is formed in longitudinal halves that are positioned around the threaded portion of the bolt and held in place by the fingers of the expansion shell assembly.

Abstract: An anchor for use in slab facings comprises an anchor bolt (2), which has an inner end that is adapted to be inserted into and to be embedded in mortar in a hole (6) formed in a wall (7) to be faced and an outer end provided with a transverse rod (1) for insertion into at least one bore formed in at least one edge face of at least one facing slab (9). To ensure that the anchor can be economically fixed and that the facing slabs can be mounted quickly, the anchor bolt (2) is provided at its inner end with a cylindrical enlarged portion (4), which has an embossed or channeled peripheral surface, and the anchor bolt is provided between the transverse rod (1) and the enlarged portion (4) with a driving sleeve (3), which is slidably mounted on the bolt and has a serrated or finned surface, which is larger in outside diameter than the enlarged portion (4).

Abstract: A bolt connection for connecting a hollow profiled member to a profiled member disposed transverse thereto where connection by welding is inadequate. A plate-like member that is resistant to bending is displaceably supported at one end against the inner surface of the hollow profiled member, and is supported at the other end against an abutment that is disposed remote from the aforementioned inner surface. The length of the plate-like member is slightly greater than the inside height of the hollow profiled member. The bottom of the hollow profiled member is preferably supported on a projection of the other profiled member. The abutment is preferably disposed at the top with the displaceable end of the plate-like member being at the bottom. By tightening the bolt that acts upon the plate-like member, a tight, releasable connection is provided.

Abstract: An expansion anchor assembly for use in a borehole formed in a receiving material has a leading end and a trailing end relative to the insertion direction of the assembly into the borehole. The expansion anchor assembly includes a tie rod with an expansion cone at its leading end, an expansion sleeve through which the tie rod extends and a cone sleeve positioned around the expansion cone and between the expansion cone and the leading end of the expansion sleeve. The radially outer surfaces of the expansion cone and the cone sleeve each have a different cone angle. Due to the different once angle, when the tie rod is drawn into the expansion sleeve toward the trailing end of the assembly, the part with the smaller cone angle moves in the same direction into the expansion sleeve until it contacts a stop. Subsequently on continued inward movement of the tie rod, both the expansion cone and the cone sleeve are drawn into the leading end of the expansion sleeve and effect an increased expanding action.

Abstract: The disclosure relates to an expansion pin consisting of a shank which at one end is provided with means for securing articles and at the other end is provided with a point. In order to obtain an anchoring having further expansion effect, the shank has an aperture in the form of a slot in which there is inserted a plastically and/or resiliently deformable insert which thickens the shank of the expansion pin in the region of the slot.

Abstract: A plastic screw anchor having legs each formed with a recess which provides the leg with good flexibility whereby the legs can easily deform during the insertion thereof into an aperture of a supporting plate and also provides a strong grip between the screw anchor and the supporting plate. A wing integrally formed on each leg prevents the screw anchor from coming out of the aperture after having once been inserted therein.

Abstract: A mounting assembly for attaching a first member to a second member such as for attaching a disposable work engaging assembly to a master holder assembly comprising a first member having opposed surfaces and at least one opening extending therethrough between the opposed surfaces, a second member formed of a malleable material having a corresponding number of tubular portions projecting therefrom at locations to register with and to be insertable into the openings in the first member, each of the tubular portions having a passageway extending therethrough formed at least in part by a non-round portion in the area thereof that extends through the opening in the first member, and a tool member having a work engaging end portion adapted to be positioned extending respectively into each of the passageways extending through the tubular portions, rotation of the tool member forcing the tool work engaging end portion into engagement with the non-round portion of the passageway extending through each of the tubular p