Abstract: A one-piece plastic fastener for supporting secondary members relative to a thin panel in a shouldered, non-circular aperture. The fastener provides a wide distribution of stress loading by a large hook-like prong which is rotated into contact with the backside of the panel by telescoping it through the aperture until the head covers the aperture. A resilient non-loadbearing arm extends from the prong in a curved or angular relationship for engagement with two adjacent edges of the non-circular aperture to permanently prevent unintentional retrograde motion of the fastener. The fastener is non-removeable due to the locking of the notch in the arm with the side edge of the non-circular aperture.

Abstract: A combined gravity operated light socket and switch including a base, fastening means extending from one side thereof and a dielectric housing extending from the other side, the housing being divided into two adjacent chambers. The first chamber is open-ended forming a light socket and the second chamber houses a switching mechanism. The switch includes a headed co-axial shaft extending between the chambers with the head acting as a contact in the base of the socket and the opposite end carrying a flat centrally flanged teeter-totter element supporting a rolling ball and arranged for predetermined angular movement upon angular shifting of the housing. The angular movement of the flat element is limited by stop means, one of which is a contact, thereby producing an on-off status depending on the angular placement of the unit.

Abstract: The invention concerns a child-proof door catch device which requires a sequence of unconnected manipulations to operate the mechanism opening a door. The mechanism includes a housing and operating and latching elements, the operating and latching elements being normally held apart by a biasing means. When the correct sequence of manipulations is performed on the operating element, the latching element is caused to disengage from a striker plate to allow the door to be opened.

Abstract: A plastic strain relief clamp is provided which comprises a head and a body having a through bore for receiving a cable, a pawl integrally formed with the body and flexibly connected thereto adjacent the bore and a second bore for a self-tapping screw adapted to be brought in engagement with the pawl in order to engage the pawl with the cable.

Abstract: The invention relates to a connection and fastening element for connecting workpieces of soft material, especially for pressboards or parts of wood, which is introduced into a pre-shaped blind bore of a workpiece and fastened therein.

Abstract: An audible vibratory biased reed assembly having the properties of being activated or commencing vibration upon being subjected to a predetermined energy level. This assembly utilizes a straight, flat, elongated, closed or clapping reed, to produce a clatter or buzzing sound, with the reed being biased through application of a bias force to one edge to distort its flatness adjacent its free extremity. The bias force is applied by an angular transverse bridge which substantially triples the frequency of the mechanical clatter.

Abstract: Disclosed herein is a cord grommet, which comprises a female member of the shape of a tube having an approximately rectangular outside cross section and provided at one end thereof with a wall blind except for an oblong hole bored therein for passage of a cord and at the other open end thereof with an outer flange and a male member composed of a shaft having an approximately elliptic cross section and adapted to be rotatably set in position inside said female member and skirt-shaped engaging means adapted to encompass the flange of said female member, whereby a cord is fastened in a twisted state to a panel by a procedure comprising the steps of inserting said cord through the male and female members, bringing the two members into intimate contact with each other, inserting the two members in the coupled state into a perforation bored through the panel and giving the male member a relative rotation.

Abstract: A valve including a pressure operated movable diaphragm which selectively seats against a movable ball member.

Abstract: The invention concerns a furniture connector assembly including a plug, a fastener, and a grommet, the plug being a substantially cylindrical component and having at least one flat side face, a spigot extending radially and obliquely from the side face and being penetrated by a bore, and the grommet comprising a substantially cylindrical shank having a locating surface at one of its ends, and being further formed with a bore extending through the shank, the bore being inclined to the axis of the shank, the fastener passing, in use, through the bore in the plug and extending into the bore in the grommet.

Abstract: An automatic tool for rapidly setting rivets or like fasteners of the expansion type supplied in strip form. It comprises a magazine for receiving a strip of rivets in which the rivets can advance stepwise so that the leading rivet faces the outlet orifice. A breech movable longitudinally along the axis of the outlet orifice and provided with a barrel fitting over the rivet mandrel and over the rivet head so that the rivet is fetched into a setting position, well clear of the magazine, in order to enable same to be set visually. A striker sliding along the axis of the breech is provided with a pin which strikes the mandrel of the rivet through the barrel and drives it into the body of the rivet and causes the rivet to be secured in the assembly holes. A double-acting detent and trigger actuating mechanism is so devised that an initial phase of operation of the detent causes the breech to advance while a second phase of operation of the detent causes the striker to act.

Abstract: A plastic fastener, for example, a one-piece plastic rivet having a head and a bifurcated oval shank and expander means capable of axial movement within a tapered bore traversing the head and shank. Each portion of the shank has a longitudinally disposed radial relief means that provides a buckle or hinge section having generally uniform radial thickness which opens into the tapered bore to provide pairs of edges falling on the surface of the bore which, when the edges are contacted by the expander means, may cause the shank portions to be moved radially and to be expanded circumferentially as well. Positive locking means are also provided for restricting movement of the expander means after driving it into the shank bore.

Abstract: A socket for use in a ball and socket joint comprising a bearing basket having a bearing seat to accommodate the pivot ball with a resilient interlocking element to retain the pivot ball in the bearing seat and a displacement member positively locking the resilient element after the ball has been seated.

Abstract: A plastic fastener, for example, a one-piece plastic rivet, having a head and a bifurcated oval shank and expander means capable of axial movement within a tapered bore traversing the head and shank. Each portion of the shank has a longitudinally disposed radial relief means that provides a buckle or hinge section having generally uniform radial thickness which opens into the tapered bore to provide pairs of edges falling on the frusto-conical surface of the bore which, when the edges are contacted by the expander means, will cause the shank portions to be moved radially and to be expanded circumferentially as well.

Abstract: A one-piece plastic screw grommet for use in a polygonally apertured panel. The shank of the grommet is complimentary to the aperture with which it is used and includes a plurality of posts positioned in the corners of the aperture with the posts carrying web-like spring members that support and co-act with legs positioned medially between adjacent posts. Each leg includes a transversely concave inner surface forming a segment of the bore with the concave surface falling substantially on the pitch diameter of the screw with which it is associated. The posts, legs, and spring members are supported at opposite ends by the head and a free end element, with the end element closing the bore and the head sealing against the panel.

Abstract: Disclosed is a binding clip which comprises an elastic filamentous portion approximately in the shape of the Greek letter ".OMEGA." (omega) and head portions possessed of mutually engageable means attached one each to the extremities of said filamentous portion. After a linear article has been encircled by the filamentous portion of said binding clip, the head portion thereof is brought into inseparable engagement by winding the head portion for thereby twisting the ends parts of the filamentous portion around each other and coupling the mutually engageable means with each other.

Abstract: A one-piece plastic strain relief grommet which comprises a female member having a flanged U-shaped head end face and a chamber for accommodating a stretched electrical conductor means, a male member adapted to fit within the chamber of the female member for distortion and locking engagement of said conductor therewith, and a connecting means for connecting said two members in the form of a unitary set. The two members remain in the form of a unitary set connected by the connecting without accidental separation from each other until the grommet is put to actual use.

Abstract: This invention provides a plastic screw grommet which comprises in combination a flange head, a leg having a polygonal (tetragonal) section and perpendicularly extending downwardly from the underside of the said flange head, depressions formed centrally on the sides of the said leg in the surface layer thereof, rigid engaging projections are joined throughout their length and formed to rise from the bottoms of the said depressions, a screw aperture extends inwardly from the topside of the flange head along the axis of the leg and grooves extend radially from the inner wall of the said screw aperture to a point adjacent the corners of said leg.

Abstract: A catch comprising a plunger member and a guide member, the plunger member being able to reciprocate in the guide member, with a nose of the plunger member extending out of the guide member, each of the members being a single moulding of a plastics material, one or both members including one or more tongues which extend primarily in the direction of relative reciprocation of the members and are resiliently flexible transversely to that direction, each tongue engaging a cam or a tongue on the other member in such a manner that forces act on the tongues having components parallel to the direction of relative reciprocation of the members, in the sense which urges the members towards a limit of relative reciprocation at which the extension of the nose out of the guide member is greatest, and if the nose is displaced into the guide member and released, then the plunger member returns to the said limit.

Abstract: A filler cap is provided comprising a flange having a handgrip, a stem of square shape for engagement in a complimentary square shaped opening in the tank. The stem is comprised of two sections angularly offset relative to each other by 45.degree. and connected by inclined surfaces. Once the first section of the stem is inserted into the tank opening it is sufficient to rotate the cap by 1/8 of a turn in order to lock it in a closed position.

Abstract: A one-piece dielectric terminal cap having a generally rectangular tapered bore with a wide mouth opening for accepting a distorted two prong edge-to-edge terminal and restoring it substantially to its initial position. The cap also includes means for probe testing the terminal without removal of the cap from the terminal, plus tool engaging means.