Abstract: In a quick-action connection for retaining an insertion part in an orifice of a carrier, for example a holding nipple in a body wall, there is, in a peripheral groove of a tenon-shaped extension piece of the insertion part, a retaining ring resiliently flexible in the radial direction, which has its largest diameter in the inserted state of the insertion part. The retaining ring partially projects beyond the periphery of the extension piece and is supported on the carrier by means of one of its end faces. So that the retaining ring is capable of guaranteeing a reliable mutual connection of the two parts, even when bending moments are exerted on the insertion part inserted into the carrier orifice with a clearance fit, its annular shell is closed in the peripheral direction and extends in the form of a meander. As a result of this ring design, the retaining ring can be compressed radially in order to introduce the insertion part into the carrier orifice, and after insertion it automatically springs open again.

Abstract: A receptacle is provided for receiving a plastic/adhesive used for mounting plastic body panels to a metallic subframe of an automobile in which the receptacle is formed through progressive die stamping from a cross formed blank. The receptacle is formed as truncated pyramidical shape and includes two sides with bent-over flanges for engaging the metallic subframe and two shorter sides which lock the receptacle to the subframe in snap-fit relationship after insertion into a square aperture.

Abstract: A pin for fixing an innermost ceramic fiber layer of a plurality of ceramic fiber layers so as to line a furnace wall to at least one other ceramic fiber layer of the plurality of ceramic fiber layers, situated at a side of the furnace wall with respect to the innermost ceramic fiber layer by being inserted from the innermost ceramic fiber layer into the other ceramic fiber layer.

Abstract: A retractable and reusable self-locking fastening device in the form of a commercially available rivet, pin, threaded bolt or stud and the like for insertion into a sized clearance hole in a workpiece includes a shank means having tenon and pilot means which comprises two successive steps of lesser diameter formed on at least one end of the shank means. Mounted on and fixedly connected to the pilot means is a lug means having a generally truncated conical shape with one closed end and the end remote therefrom being opened to define a space in which the tenon means is disposed, and a sized aperture in the closed end to enable the lug means to be fixedly connected to the pilot means. The tapered walls of the lug means have at least four outwardly extending movable sections separated by at least four longitudinal slots defining a truncated cone configuration.

Abstract: A tube connector comprising a first member and a second member, each member being made from a sheet metal stamping. Each member includes an annular portion, a tubular barrel, and plural legs. The tubular barrel extends from an inner periphery of the annular portion. The legs extend outwardly from the annular portion and are adapted to flex axially so as to facilitate insertion of such member into the tube through one end of the tube. The legs have sharp edges tending to dig aggressively into an inner wall of the tube so as to resist withdrawal and rotation of such member. The tubular barrel of the first member fits within and extends through the tubular barrel of the second member and is crimped at one end so as to secure the tubular barrel of the second member bears at one end agains the annular portion of the first member. The tubular barrel of the first member is internally threaded and consequently deformed so as to fit tightly within the tubular barrel of the second member.

Abstract: A fastener for plates includes a leg portion for engaging with a first mounting plate, a flange portion integrally secured to the leg portion, a head portion projecting from the flange portion for holding a second mounting plate between the flange portion and the head portion, a cut-away portion formed by cutting away part of the head portion from its outer periphery towards its axis for allowing the head portion to be inserted into a mounting hole of a second mounting plate by a rotating action, and a resilient portion for pressing against the inner periphery of the mounting hole of the second mounting plate which is secured by the flange portion.

Abstract: A push-in type fastener for use in a preformed opening in a workpiece. The fastener is formed from plastic and includes a relatively rigid, axially elongated body. An enlarged head is formed at one end and a pair of resilient arms are integrally joined to the body at the other end. The arms are located diametrically opposite one another and extend at an angle toward the head. The free end zones of the arms have catch openings or notches adapted to engage the underside of a panel or workpiece opening when the fastener is inserted therein. In addition, the body includes cylindrical guide sections which lie opposite each other and are displaced 90 degrees radially from the arms. Truncated cone sections are formed above and below the cylindrical guide sections.

Abstract: A one-piece plastic reusable push-in fastener for insertion into an aperture in a workpiece comprising a head portion and a shank portion, the shank portion being integrally formed to one side of the head portion with its longitudinal axis extending away from the head portion and having a particular cross section and a transversely extending fin section intermediate the length of the shank on one side thereof whereby the fin section cooperates with the particular shank cross section to inhibit withdrawal of the fastener from a particular workpiece aperture and to centrally locate the longitudinal axis of the shank with the central axis of the aperture by forcing the periphery of the shank cross section against the inner wall of the workpiece aperture.

Abstract: Fastening device for fixing a screw or the like in a hole or opening in plaster board, or the like. It comprises a sleeve with a flange placed at one side of the board and a nut fixable against the back of the plaster board. A mounting screw is passed through the sleeve and the nut. The sleeve has an inner cone and the nut has a corresponding cone which extends into the inner cone. As the nut and sleeve are drawn together, the cones engage and spread the sleeve. The sleeve is provided with at least one pair of slits defining longitudinal tongues which are spread. A screw inserted through the sleeve into the nut pulls the cones together. The nut itself is provided with wings which may be bent out against the back surface of the board. The tightening of the nut on the screw thereby results in anchoring the nut against the back surface of the board and pulls the flange of the sleeve against the front surface and spreads the slit sleeve.

Abstract: A fastener made of a resilient material to be pressed onto a threaded pin or the like comprising a holding part for holding an object and a fastening part for securing the fastener to the pin, the fastening part including a plurality of clamping walls integral with and extending downwardly from the holding part of the fastener for tightly gripping the periphery of the pin, the walls having a smooth inner surface and being uniformily distributed in a circle around the longitudinal axis of the fastener to form an opening for the pin, and a rib integral with the holding part and projecting radially outwardly from each longitudinal edge of each wall with the adjacent ribs of every two adjoining walls being connected to each other.

Abstract: A fastener snaps through aligned apertures in two work pieces. The shape of the aperture in the first work piece is such that the fastener cannot be withdrawn from it. However, the aperture in the second work piece is so shaped that the fastener can be rotated for removal of the fastener from the second work piece. The work pieces thereby can be separated, but the fastener remains in substantially permanent association with the first work piece for reuse of the work piece and the fastener.

Abstract: A screw grommet has a flange and a leg extending therefrom and has cantilever-like engagement projections extending tangentially with respect to the outer periphery of the leg. A panel can be held clamped between the flange and engagement projections. When inserting the leg through an opening in the panel, the engagement projections are easily flexed to facilitate the insertion.

Abstract: A screw grommet comprises a pair of flange halves, a pair of leg halves depending from the respective flange halves and a small thickness portion connecting the lower ends of the leg halves. When fitting the screw grommet, the leg halves are thrust into a panel opening and then a tapping screw is screwed into the threaded grooves to separate the leg halves from each other while their opposed surfaces remain parallel so that the screw grommet is reliably secured to the panel. Thus, the screw grommet is adaptable to tapping screws having different diameters and also to panels having different thicknesses or openings of different diameters.

Abstract: An improved one piece drive fastener having a head and a shank, the shank including a generally non-circular cross-section presenting a plurality of generally flat, axially extending surfaces. Each of the flat surfaces on the shank carry a plurality of axially spaced flexible resilient wing elements; the wings being flexed along the straight line connection with the flat surfaces. Certain wings extending from and positioned in spaced relation along at least one said surfaces being angularly disposed so as to tilt in the direction of said head and further including means formed integrally with each of said certain wings to substantially increase the force required for removal of said fastener from a cooperating aperture as compared to the force required to introduce said fastener into said aperture. Said fastener with its flat surfaces permitting the manufacture of said fastener in a simple two-plate mold design.

Abstract: A securing device for securing in cavaties and comprising a number of clamping jaws (11), provided under influence of a changeable tension body (21) to expand against opposite wall portions (13) in said cavity. The clamping jaws (11) have engagement surfaces (12) which are forced outwards and tension surfaces provided to cooperate with a tension surface (22) of the tension body. By means of a displacement motion of the clamping jaws relative to the tension body is brought to adjust the clamping jaws between an inner releasing position, and an outer expanded securing position. The device comprises a spring mechanism (4) provided to press the clamping jaws (11) in direction against the tension body (21). Between the clamping jaws and the tension body a distance element (20) is positioned being provided to maintain in its releasing position a predetermined distance between a support surface (19) of each clamping jaw and a surface (23) of said distance element.

Abstract: An expansion dowel assembly is adapted to secure fastening plates in spaced relation onto a structure. The expansion dowel assembly includes an axially extending sleeve-like member including an expansion section arranged to be secured into the structure and a collar section. The collar section engages the facing plate between a bearing and an abutment. An axially extending part of the collar section between the bearing and the abutment is arranged to collapse in the axial direction so that the space between the bearing and the abutment corresponds to the wall thickness of the facing plate. The axially collapsible part permits the expansion dowel assembly to be used with facing plates of different thicknesses.

Abstract: A plastic screw grommet is disclosed, which has a body formed with a threaded hole and also formed in a lower end portion with a diagonal slit. A side of at least one of divisions defined by the slit is formed with a flexible hook portion adjacent to an edge of the slit and outwardly inclined toward the flange.

Abstract: One piece, integrally molded fasteners and methods for their use. A harness comprising a base, an elongated flexible strap, and a toggle-type lock for holding a bundle of wires or cables together. A first end of the strap is connected to the base, and the base forms a slot to receive a second end of the strap. A rack hook comprising a channel portion, a hook portion, and a toggle-type lock wherein the hook portion extends upward from and is directly supported by the channel portion. A rope anchor comprising a pair of legs, an annular ring, and a toggle-type lock, wherein the annular ring is integrally connected to top ends of the legs, and the lock is integrally connected to bottom ends of those legs.

Abstract: A screw receiver made of a synthetic resin to be fitted in a mounting hole formed in a panel to receive a setscrew when screwed comprises a hollow main body portion having a receiving space and open at one end, the main body portion having a flange provided at the end at which the receiving space is open, and a plurality of screw receiving portions each formed on one side surface in the longitudinal direction thereof and also having a raised portion on the other side surface, a screw receiving section being formed in the receiving space of the main body portion by inserting the screw receiving portions into the receiving space along the wall surfaces thereof through the open end of the main body portion.

Abstract: A one-piece molded plastic reusable internally threaded anchor nut removably insertable in a mounting hole in a workpiece and adapted to receive a screw comprises two sections which are joined together by an integrally formed web or hinge. When the sections are folded together, they define an internally threaded screw-receiving passage and an external releasable locking mechanism for securing the anchor nut in the mounting hole. In one embodiment the portions defining the screw-receiving passage are bifurcated and expand outwardly as the screw is inserted so as to cause the external locking mechanism (i.e., in the form of slots on the exterior of the bifurcations) to engage the edge of the mounting hole in which the nut was previously inserted. In other embodiments, the external locking mechanism (i.e.

Abstract: The fastener is in a single piece and adapted to achieve the blind assembly and fixing of sumperimposed elements (A, B) provided with openings (C, D) which have a substantially square-shaped common part in which the fastener is engaged so as to fix together the element (A, B) after rotation of the fastener. For this purpose, it comprises a head (1) so shaped as to pass through the common part and connected to a rectangular-sided stem (3) so as to define two shoulders (4). This stem (3) is enlarged at one end in the form of a foot adapted to cooperate with the shoulders (4) by means of wings (6) of the foot to trap therebetween the elements (A, B).