Abstract: An orthopedic fastener device is based on a strong central shaft that is threaded in a one end region and that, in one embodiment, presents a ramp surface in the other end region. The ramp end is inserted down-hole a bore in bone while an expandable first collet having bendable circumferential flukes is snug to the shaft, presenting a diameter less than the bore. Partial axial withdrawal of the shaft from the bore forces the first collet into and against the shaft's ramp region, causing the collet's flukes to splay and strongly compressively engage the bone, thereby permanently anchoring the fastener's first end. Soft tissue, normally a ligament, is slipped over the shaft region extending beyond the bone, and is optionally grasped by a toothed washer. Another, second, split collet--initially expanded in its internal diameter that has and presents threads--slides along the shaft so as to compress the ligament in position against the bone.

Abstract: A hole plug and method of installing the hole plug to seal and repair a hole in a wall of a pipeline, tank or other physical structure is provided. The hole plug has a bolt with a bolt head and a threaded shank, where two or more adjacent notched washers, one or more sealing washers and an exterior washer are secured about the threaded shank and between the bolt head and a threaded nut. The present invention includes an internal sealing washer and/or an external sealing washer. The sealing washers and the exterior washer are selected to provide a surface area larger than the hole. The hole is prepared by establishing a solid, clean edge. The bolt head, a length of the threaded shank, the notched washers and an optional internal sealing washer, are passed from the exterior side of the wall and through the hole. Insertion of the notched washers is accomplished by tipping the washers at an angle to the wall and rotating the washer through the hole.

Abstract: A device is provided for the screwless mounting of at least one accessory in a cutout of a vehicle support structure. The screwless mounting device includes a locking element, a base body, a connecting device and a fastening element which can be moved between an insertion position and a fastening position. In the insertion position, the locking element and the fastening element can be pushed through the recess of the accessory until the base body rests against the visible side of the accessory. In the fastening position, the fastening element can be brought to rest against the back of the accessory in order to fix the device in place in the accessory. The connecting device is provided between the fastening element and the base body for the selective fixation of the fastening element in the fastened position.

Abstract: The fastening element uses a sleeve with a flanged end to insert in a hole drilled through an object, such as, a sign, and a structural element to which the object is to be attached. This allows the user to place the object in the position to be mounted and to drill a single hole of uniform diameter and insert the sleeve. An expandable element which either uses a plurality of bendable legs, or a pair of toggle elements, similar to a Toggle Bolt, is inserted with the sleeve to provide anchor members behind the structural element, such as a wall. The fastening element essentially allows one step drilling of a hole and securing of an object to a structure particularly in instance where access for use of a fastening nut on a bolt is not possible. The head of the bolt is of a sufficient radius to cover the flanged end of the sleeve when the fastening element is secured. The toggle element may also be used without the sleeve.

Abstract: A fastener assembly which allows relatively heavy objects to be attached to either a hollow or a solid core wall by distributing the weight of such objects along a relatively long axial plane of support defined by an elongated cantilever structure. The apparatus includes an elongated tubular body having a flange or face plate at its proximal end. The tubular body defines an axial cavity dimensioned to receive a correspondingly dimensioned support member. When inserted into a properly dimensioned hole formed in a suitable support structure such, for example as a wall, ceiling, or floor, the rear face of the face plate contacts the portion of the support structure surface which surrounds the hole. The elongated tubular body, as well as the support member received therein, is maintained in position by an anchoring member which is disposed proximate the distal end of the tubular body. The anchor member comprises a base portion defining a central, threaded aperture.

Abstract: This invention is a wall fastener to join abutting surfaces such as affixing a bracket to a wall. The L-shape arms of the fastener are attached with hinges to a shell or to a slidable nut enclosed in a shell which is inserted in a preformed hole or aperture in the wall. The fastener with arms attached to the slidable nut is adjustable for use with walls of varying widths. A screw holding the object to be attached is inserted in the shell and threaded through the nut (FIG. 4). The screw then engages the arms of the fastener and forces them to pivot into a clamping position (FIG. 5). The screw is turned until the arms are clamped against the wall (FIG. 6). The fastener with the arms attached to the shell is similar in operation to the adjustable fastener except its use is for walls or surfaces of the same width as the device.

Abstract: A plastic holder having a base and a journal formed thereon. The plastic holder further having a holding element. The holding element includes an articulating bore for receiving the journal of the base. The journal includes a smaller cross section than the articulating bore. The holding element is pivotable about the journal and positionable into a basic position and a locked position. The articulating bore partially resting on the journal when the holding element is in the locked position.

Abstract: A fastener assembly which imparts, on a surface of a first structural element to be joined to a second structural element, joining forces at three or more radially equidistant regions isolated from the edge of an opening extending through the first structural element. An illustrative embodiment of the fastener assembly includes an apertured face plate, an anchoring assembly, and a positioner for causing relative axial movement between the face plate and the anchoring assembly. The anchoring assembly includes a base portion and a projecting portion that extends in an axial direction away from the base portion.

Abstract: An anchor for fixing a first member (35) to a second member (8), such as a plasterboard or similar sheet material wall. The anchor is formed from a plastics material and includes an elongate shank (2) for passage through the second member (8) from a front surface (7) thereof to beyond the rear surface. The shank has a screw thread (17) for engaging the second member for retaining the shank therein, and the shank includes a passage (25) extending from an outer head end (3) for reception of a fastening screw (24-26), a toggle bar (5) and at least one frangible connector (20-21-22) attaching the toggle bar on the shank in an inoperative position at which the toggle bar extends in the longitudinal direction of the elongate shank and does not interfere with passage of the shank through the second member.

Abstract: A retaining device for securing insulation to sheet metal has a flange, an articulated structure and a push plate having an aperture therethrough such that when the retainer, except for the flange, is inserted in a hole in the insulation layer it allows a push plate to be pushed towards the flange, causing a pair of locking fingers to pivot and press up against the underside of the insulation in a locked position. The retaining device is then frictionally fitted over a stud member on the sheet metal to which the insulation layer is to be secured.

Abstract: Methods and apparatus for securing a tie rod to a shroud support structure are described. One embodiment of the apparatus is a toggle bolt assembly including a toggle bolt body having an upper threaded portion and a lower toggle engaging portion. A toggle is rotatably secured to the toggle bolt body at the lower toggle engaging portion. A crimp nut including a threaded nut portion and a crimp collar is threadedly secured to the upper threaded portion of the toggle bolt body. Such toggle bolt assembly also includes a sleeve sized to have at least a portion of the toggle bolt body and the toggle located therein. The sleeve has a toggle opening so that the toggle can rotate from a first position in which the toggle is substantially located within the sleeve to a second position in which surface engaging portions of the toggle extend beyond the sleeve. A lower portion of the sleeve has a toggle rotation surface to facilitate rotation of the toggle.

Abstract: A device for securing a floor mat to the floor carpet of an automobile, comprising a base plate with an aperture that is positioned on top of a hole in an automobile floor carpet and two leg members attached to the base plate near the aperture and extending downward through the hole. The leg members are foldable at intermediate portions thereof such that the intermediate portions can move apart from each other. A connecting section is attached to the bottom ends of the two leg members to connect them together. A post having at least one prong is mounted on the connecting section and extends upward toward the base plate such that when the leg members are folded, at least a portion of the post extends through the aperture in the base plate and the hole in the carpet. The post also has means for maintaining the leg members in a folded state so that the post extends through the aperture in the base plate. The invention also comprises means for detachably engaging the post with a floor mat.

Abstract: An automatic fastening or closing device operating by moving past a dead point and comprising a base portion to which are pivotally connected arcuate tongues themselves pivotally connected by hinges to lugs and comprising each one an outwards projecting portion to form a bearing point allowing the lugs to assume a position remote from each other, i.e. an open locking position, the device being applicable to the fastening and to the locking in blind relationship of a box-like or channel-shaped part onto any support or member whatsoever.

Abstract: A retainer has inner and outer subsections that are hingedly connected. An outer portion is hingedly connected to the outer subsections. The outer subsection rotates on its hinge relative to the outer portion, and axially back towards the inner surface of the wall to contact the wall. The inner subsection extends to a connection with the inner head portion. The inner and outer subsections are in abutting contact adjacent to the hinge. The abutting contact creates a holding force at the point of contact between the hinge and the inner wall. This results in a truss-like configuration that securely retains the retainer in the wall.

Abstract: A clamping device for clamping a punch block to a jaw of a punch press assembly where the action of clamping does not disturb the alignment between the punch block and the die. The device includes a pair of cams residing in a stacked relationship with each of the cams having a tapered aperture therethrough. A bolt passes through the tapered apertures of both cams and through a bore in the jaw to engage a threaded orifice in the punch block. Each of the cams has a generally cylindrical cam surface with a flat formed therein. Once the punch block is properly aligned with the die, the bolt is lightly tightened with the flats of the two cams in planar abutment with one another such that the cylindrical axes of the cams are separated by a first distance. The cams are then rotated with the lower one of the cams rolling on the surface of the jaw.

Abstract: An assembly for retaining a pin in aligned bores of two structural members, such as clevis and a tang, includes a support member or boss, a retaining flag and a retaining pin. The retaining flag is slidably mounted on the support member and may be moved between a service position wherein the pin may be inserted into and removed from the bores and a locking position wherein the pin is held in the bores, preferably locked from rotation. The flag includes an opening having engagement surfaces for contacting a groove in the pin in the locking position. The flag is held on the support member by abutment surfaces. Two abutment surfaces serve to guide the flag in its sliding motion between the service and locked positions. Other abutment surfaces maintain the flag on the support member and prevent removal of the flag. The abutment surfaces contact the retaining pin in the locking position to maintain the flag in the locking position.

Abstract: A sun visor retainer assembly (10) adapted for attachment to a header opening (36) in a vehicle header (22) is disclosed. The retainer assembly (10) includes a housing and a retainer pin (46). The housing (44) has a main body (50) with a pin opening (55) therein and at least one flap (58) pivotally connected to the main body (50) by living hinge portion (56). The retaining pin (46) is insertable through the pin opening (53) to pivot the flap (58) into engagement with an outer surface (32) of the header (22) to clamp the flap (58) and the main body (50) against respective outer and inner surfaces (32,34) of the header (22).

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 rivet type fastening device having a hollow rivet body, a pull shank slideably disposed within said hollow rivet body and including an enlarged mandrel head at one end. The opposing end of the pull shank is connected to a pivotally mounted actuator movably mounted between two positions for moving said mandrel head between condition with said rivet body or an unset condition extending outside said rivet body.

Abstract: A protective liner is secured to a truck cargo bed by a plurality of one-piece resilient fasteners each including a bearing plate and a clamp member. The bearing plate and clamp member are integrally formed with the clamp member extending perpendicularly from the bearing plate. A lever arm extends from a peripheral edge of the clamp member toward the bearing plate to a free end portion removed from contact with the base plate. The lever arm is normally spring biased downwardly away from the bearing plate. On installation the clamp member is projected through an opening in the liner with the peripheral edge sliding over the edge of the liner around the opening. As the clamp member advances through the opening, the lever arm slides on the liner edge and is urged upwardly toward the bearing plate to allow the clamp member to pass through the opening. The pivotal movement of the lever arm allows the bearing plate to be compressed against the liner without flexing the bearing plate relative to the clamp member.

Abstract: A removable hollow-wall anchor for fastening machine screws to a wall is disclosed. Commonly called a Molly bolt, in one aspect of the invention the head of the Molly bolt is unthreadable from the anchor part of the Molly bolt so that once the Molly bolt has been secured to the wall the head can be unthreaded so as to remove it from the outer surface of the wall. A gripper is used in conjunction with the head to prevent rotation of the Molly bolt when the machine screw is being threaded in or out. The gripper is also removable from the wall. Once the machine screw, head and gripper have been removed from the wall, the outer surface of the wall is flush and free from any part of the Molly bolt.

Abstract: A planar pointed body, impacted through a sheetrock wall to create a rectangular notch for sighting therethrough a central opening in the planar body incident to a self-threading screw being applied along the line of sight into threaded engagement with said central opening so that the planar body serves as a support for the screw when serving a wall mounting function.

Abstract: A number of improvements to anchoring retainers are disclosed. The improvements ensure that the retainers are securely attached to walls, and that they do not move during attachment after being attached by a threaded fastener.

Abstract: A reusable anchor apparatus removably securable to a panel. The reusable anchor apparatus includes a housing having an inner end, an outer end, a longitudinal axis extending therebetween, and a restraining member preventing insertion of the housing completely through the panel. The reusable anchor further includes a first finger pivotally coupled to the inner end of the housing, a second finger pivotally coupled to the inner end of the housing, opposing the first finger, and a plunger for moving the first finger and the second finger between a retracted position in which the fingers extend substantially parallel to the longitudinal axis, and an extended position in which the first finger and the second finger are substantially upright with respect to the longitudinal axis in opposing directions.

Abstract: An anchor for suspending objects to a wall or ceiling is provided having a plunger held in position adjacent to a chamber, the plunger being inserted through the chamber where the plunger engages a plurality of wings, the wings thereby flare outward to secure the anchor within the support structure.

Abstract: An attachment part for the interior of a vehicle, such as a hand grip (31) or sun visor (33, 37), has a receiving housing (4) adapted to grip over a bearing bracket (6) which is to be fastened to an attachment wall of the vehicle. The attachment part is swingably pivoted on the bearing bracket. In order to obtain a simplified mounting, the bearing bracket (6) is formed with a detent nose (9) which is adapted for passing through an opening (22) in the attachment wall (21) and for engaging behind the edge of the opening. Pivoted to the bearing bracket (6) is a detent lever (12) having an axis of rotation (13) directed parallel to the pivot pin (7).

Abstract: A device and method for locking an electrical component, having a body and a flange portion, with a panel through a panel opening, in which the flange abuts a first face of the panel, which includes moving an actuator on the body of the component to displace a cam follower on the body from a first to a second position in which the cam follower projects beyond the contour of the body enough to abut another panel face.

Abstract: A device for securing at least two elements together by means of a screw (3) and a transfer nut (4) adapted to be engaged in the recesses (1a, 2a) of said elements (1, 2) is characterized in that the transfer nut (4) includes a nut plate (6) having a threaded hole (7), on either side of which are located areas (8, 9) for the passage of the arms (10, 11) of a fastening unit (12) having a generally flare-shaped U cross section. The intermediate portion (13) of the latter includes a hole for the passage (14) of the screw (3) opposite the threaded hole (7) of the nut plate (6) and is adapted to be applied against a stop surface of the screw (3) or of the element (1) on which said screw rests, such that the nut plate causes the arms (10, 11) of the fastening unit (12) to be spaced apart and abuts on a contact surface of the other element (2) during screwing, in order to secure the elements together.

Abstract: A mounting arrangement for recessed lighting fixtures, includes a mounting ring with a cylindrical wall section for insertion in a ceiling opening. The mounting ring is provided with several holding elements, each of which being adjustable by a spindle between a first position in which the mounting ring is insertable in the ceiling opening and a second position in which the mounting ring is securely retained in the ceiling opening. Each holding element includes an angle plate received in a compartment of the mounting ring and having a short leg and a long leg. The angle plate is rotatably supported about a bolt which extends in the vertex of the angle plate and is connected to the spindle. Upon insertion of the mounting ring in the ceiling opening, the holding element occupies its first or upper position, with the long leg extending coextensive with the spindle and with the short leg being supported by the top edge of a rear wall of the compartment.

Abstract: The dowel comprises a body (1), with two elongate lateral arms (4), each having a groove, and a bore, opening out between the arms (4) for a fixing screw (22) to pass through, a rocker (2) sliding and pivoting on the arms (4) of the body (1) by means of two pivots (10) in their grooves, with a ramp which interacts with the end of the screw (22) in order to cause the rocker (2) to pivot, and an orifice for interacting, in the tilted position, with the fixing screw (22) and causing the rocker (2) to slide.Shearable pins (19) are provided for temporarily holding the rocker (2), detachable under the action of the screw (22), and which, when the dowel is inserted into a wall, drive the rocker (2) with the body (1). The body (1) and the rocker (2) are moulded simultaneously a single piece from injectable material.The dowel can be used for fixing a component to a gypsum board.

Abstract: A wall plug type fastener comprises an elongate anchor body having arm members extending radially from the anchor body. Brace members provide support for the anchor body and permit distribution of load forces applied to the anchor. Anti-rotational flanges extending along the anchor body secure the fastener against rotational displacement when installed in a drywall. The anchor body defines a first axial void in alignment with a satellite body defining a second axial void spaced from and coaxial with the anchor axial void.

Abstract: A plastic fastener for mounting a hand rail to a thin wall such as a tub or shower wall is provided for which comprises a rigid anchor bar having a substantially flat bearing surface to engage a back surface of the wall and which has an arcuate length for installation in narrow spaces. The plastic fastener is molded in a flat condition and comprises a fastening head integrally connected to the anchor bar by a flexible strap. The anchor bar has a transverse slot to define a rigid block and an interconnecting flexible hinge. The plastic fastener includes a bolt adapted to extend through an opening in the fastening head and to be threaded into an opening in the anchor bar as the plastic fastener is bent about the flexible hinge to form a fastener assembly. The fastener assembly is mounted to the wall so that the anchor bar is inserted through an opening in the wall to extend behind the wall as the fastening head is maintained within the opening.

Abstract: A number of improvements to anchoring retainers are disclosed. The improvements ensure that the retainers are securely attached to walls, and that they do not move during attachment after being attached by a threaded fastener. In one inventive feature, an improved cap for securing the fastener to the wall is disclosed wherein the cap has a thickened portion. In another feature, flip caps are disclosed which secure the anchor within a bore in the wall. In an additional feature of the invention, a tab and groove engagement insures that portions of the retainer do not move relative to each other as the threaded fastener is tightened. Finally, in another feature of the invention, structure is included into the retainer which assists the retainer in folding towards a secured position in the wall.

Abstract: An anchor assembly for retaining an elongated fastener member within an opening defined by a support wall having at least one concealed side. At least two elongated wire-like legs are positioned in parallel relation and a threaded apertured anchor member is slidably movable along the wire-like leg members and adapted to assume a first position parallel to the legs when the legs are in a first orientation and a second position generally perpendicular to the legs when the position of the legs is rotated to a second position. A connecting member in the form of a collar is attached to the proximal ends of the legs and is configured and dimensioned for positioning within the opening of the support member.

Abstract: An expansible anchor bolt construction (10) including: a hollow cylindrical housing (20) equipped with a pair of pivoted anchor wings (12), which are forced into an expanded disposition relative to the housing (20) by the passage of a threaded bolt (13); and, a locking collar (14) disposed within the housing (20) and adapted to be engaged by the threaded bolt (13) to draw the locking collar (14) into captive engagement with the anchor wings (12).

Abstract: Disclosed is a toilet seat cover closure device responsive to the flow of water in a toilet tank during a flushing operation to operate a push pin to urge the cover from a substantially vertical position to a horizontal position over a toilet seat on a toilet bowl. In a first embodiment the push pin is operated by a bowden wire in response to the pressure of water filling the water tank. In a second embodiment the push pin is operated by a cable arrangement responsive to the lowering of the water in the toilet tank during the first part of the flushing operation. With both embodiments a dampening mechanism is provided to control the rate of descent of the cover, comprising a spring-biased cam element cooperating with cam faces on the cover pivot shaft connected to move with said cover.

Abstract: An anchor assembly for retaining an elongated fastener member within an opening defined by a support wall having at least one concealed side. At least two elongated wire-like legs are positioned in parallel relation and a threaded apertured anchor member is slidably movable along the wire-like leg members and adapted to assume a first position parallel to the legs and to pivot toward a second position generally perpendicular to the legs when the anchor is advanced distally or when the leg members are withdrawn proximally to cause engagement therebetween. A connecting member in the form of a collar is positioned at the proximal ends of the legs and is configured and dimensioned for positioning within the opening of the support wall.

Abstract: A support system for supporting lights, T.V. monitors and similar devices includes sectional rail structures comprising identical rails interconnected together in end-to-end relation. Rails are also connected to directional coupling members in angular relation therewith. Quick-connect, overcenter toggle connector devices interconnect the rails together in end-to-end relation and also interconnect rails to coupling members in angular relation.

Abstract: A replacement closure assembly for the drain hole of a fluid reservoir is disclosed. The assembly is comprised of a threaded shaft portion which includes a clamping member at one end thereof and a backing member at the other end thereof. A sealing member is provided between the clamping member and the backing member and is dimensioned to close the drain hole opening. In the preferred embodiment, the clamping member is formed about a threaded pivot member which is secured on the threaded portion of the shaft. In use, the clamping member is passed through the drain hole and brought into engagement with the interior of the reservior. The shaft is then threaded through the clamping member until the sealing member is urged into contact with the drain hole. The backing member provides a continuous contact between the sealing member and the reservoir.

Abstract: A fastener for securing an insulator in the form of a sheet onto a floor panel, comprising a stem portion adapted to be passed through and secured in a mounting hole provided in a floor panel or the like, a flange portion at a base end of the stem portion, and flat pieces which can be secured in a position to interpose the insulator between the flange portion and the flat pieces. The flat pieces may be bent toward the stem portion so that the flat pieces may be passed through an opening provided in the insulator along with the stem portion and then extended to the position for interposing the insulator between the flange portion and the flat pieces. The flat pieces may be provided with engagement means for securing them at this position. Once the fastener is thus integrally attached to the insulator, the positioning of the fastener is facilitated without requiring the relative positioning between the fastener and the insulator to be heeded.

Abstract: A screw grommet with which an externally threaded member is threadedly engaged in a state in which the screw grommet is inserted through an attaching hole formed in a member to which the screw grommet is to be attached. An externally threaded member is passed through a head having a through hole, and the head abuts against the member to which the screw grommet is to be attached. The externally threaded member is then inserted through a leg which projects from the head and is inserted through the member to which the screw grommet is to be attached. The externally threaded member is threadedly engaged with an internal thread member. A pair of pawls are formed on a part of the internal thread member and are, together with the internal thread member, inserted in the leg in a state in which the diameter of the pawls is reduced. When the internal thread member approaches the head, the diameter of the pawls is enlarged in such a manner as to clamp the member to which the screw grommet is to be attached.

Abstract: The device is of the type comprising a steering column support structure (1) connected to the rest of the structure of the vehicle and comprising two side members (2,3) between which the column is disposed, and means for fixing the column in position by urging the side walls together and comprising a rod (10) extending through and between the side members and having a first end portion (11) bearing against one of the side members and a second end portion connected to eccentric fixing means (12) provided with at least one eccentric cam (13,17) connected to an actuating lever (14) and to the second end portion (15) of the rod (10) and bearing against the other side member of the support structure for urging the side members together and thereby fixing the column in position. The at least one eccentric cam (13,17) comprises a central core (13a,17a) on which is rotatively mounted a rolling ring (13b,17b) bearing against the corresponding side member.

Abstract: The fixing device comprises a steering column support structure for connection to the rest of the structure of the vehicle and comprising two side members (2,3) between which the steering column (4) is disposed, and means for fixing the column in position by urging the side members towards each other and comprising a rod (10) extending between the side members and having a first end portion (11) bearing against one of the side members and a second end portion connected to eccentric fixing means (12) comprising at least one eccentric cam (13,17) connected to an actuating lever (14) and to the second end portion (15) of the rod (10) and bearing against the other side member of the structure to permit urging the side members towards each other and thereby fixing the column in position. At least one rolling member (18,19) is interposed between the at least one eccentric cam and the corresponding side member of the support structure.

Abstract: A fastening device and method for securely attaching objects, which objects can be relatively large in size, to a front side of a panel having the other side closed or hidden, which panel can be relatively thin in thickness, uses an elongated auxiliary member which is insertable lengthwise through an insertion hole formed in the panel. The auxiliary member is positionable on the back side of the panel to extend along a significant linear distance on the back side of the panel. The object is attached to the panel and the auxiliary member by a plurality of fasteners. Each fastener extends through aligned openings formed in the object, the panel, and the auxiliary member. Each of the set of aligned openings is separate and spaced from the insertion hole to thereby provide a plurality of attachment forces. Each attachment force is separate and spaced from the location of the insertion hole.

Abstract: Toggle bolt having an anchor screw threaded over at least a portion of its length, on whose end which is to be anchored in the cavity a toggle is mounted for pivoting between the legs of a shackle, between an insertion position aligned with the anchor screw and a locking position in which it lies across the axis of the latter.

Abstract: An improved fastener mountable within a plasterboard wall from one side of the wall and used with a screw comprises a fastener body and a toggle clamp pivotable between an insertion position and a toggle position. The fastener has a drilling tip adapted to drill a hole of sufficient diameter so as to accommodate the fastener, except for the fastener head which is adapted to coact with a driving tool. In a first embodiment, the drilling tip is an integral part of the fastener body and extends axially beyond the toggle clamp in its insertion position. In a second embodiment, the drilling tip is an integral part of the toggle clamp and extends axially beyond the fastener body in the insertion position of the toggle clamp. In each embodiment, the fastener is self-drilling.

Abstract: A fastener comprised of longitudinally divided bolt pieces (1,2,3) inserted into the hole, with trailing tips of the bolt pieces connected to a string (5), which is pulled out of a hole into which the bolt pieces are inserted so that the divided bolt pieces are recoupled, with head portions of the divided bolt pieces halted at the other side of the hole. The forwardly exposed shank of the recoupled bolt is fastened by means of a nut or by applying a riveting.

Abstract: One form of conventional earth anchor device includes an anchor which is driven into the ground as the leading element of a combination. Thus, the anchor must be streamlined to facilitate ground entry which is incompatible with the need for a curved body facilitating anchoring. Another problem is the need for anchors having large bearing areas which require considerable effort for insertion into the ground. A device providing a solution to these problems includes a tube or sleeve with a sacrificial blade releasably mounted in the bottom end thereof for driving into the ground, and a rod carrying an anchor and a spring biasing the anchor outwardly, whereby the sleeve can be driven into the ground, following which the rod is held down while the sleeve is extracted, leaving the blade, and, when the anchor and spring exit the sleeve, the spring biases the anchor into a ground engaging position. An upward pull on the rod pivots the anchor into a secure anchoring position in the ground.

Abstract: A special kind of fastening device is disclosed. The fastening device of the present invention comprises several divided washer sections and a guide wire which are to be used in conjuction with a blind rivet or a bolt. This fastening device is used in order to place the washer on the back of a wall for fastening a bolt, etc., in the case where the said back of the wall is inaccessible in usual manner. Generally the divided washer sections are of the shape of a parallel-elliptical form or a parallelogram, and therefore, they can be passed easily through a small hole. After passing through the small hole, they can be assembled into a form of a nut, if the guide wire is pulled forward which is connecting through all the divided washer sections.

Abstract: Disclosed is an anchor assembly especially for use in a plastic wall-panel which comprises a plug formed of a forward section comprising a tapering plastic board-piercing part and an integral ram head, and of a hollow cylindrical section pivotably connected to the forward section. The assembly may further comprise a spike capable of being driven into the hollow cylindrical section, the spike being provided with a cylindrical portion having serrations on its outer surface for bitting into the cylindrical section or ram head and thus being secured to this section or head. The spike is provided with a hammer portion having a length sufficient at least to engage the ram head, as it is driven into the plug, and to cause pivotal of the forward section of the plug and abutment thereof against the concealed side of the plaster-wall panel.