Abstract: An apparatus for properly mixing the constituents of a suspension is disclosed. The apparatus comprises a tank for holding a desired quantity of suspension with an inlet at its base having an air supply affixed to the inlet for supplying air into the tank and for combination with the suspension. Additionally a funnel is used for directing the air combined with the suspension upward through the tank and a dispersion member for properly dispersing particles within the suspension and for removing the particles from the sides and bottom of the tank may also be employed.

Abstract: A wiring grommet comprised of three components. A retractable lid is carried by a cylindrical cover which is shaped to closely nest within a cylindrical sleeve body. The retractable lid is attached to the cover by means of protrusions formed at each end of the lid. A recess formed in the underside of the cover and lid is shaped to receive a flange on the cylindrical sleeve body so that the profile of the assembled grommet is smooth and inconspicuous. The lid retracts to an open position which is similarly low in profile.

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 tamperproof shackle seal comprising: a strap, a plug at one end of the strap, a housing at the other end of the strap, and a socket embedded within the housing; the strap, the plug and the housing having been integrally formed of a plastics material, and the socket having been separately formed of a plastics material; the plug including a leading end and a shoulder which faces away from said leading end; the housing having a sleeve-like wall which is integrally closed around the socket apart from at an open mouth; and the socket defining a cavity which is closed, apart from at an open entrance in alignment with said open mouth, with at least one resiliently deflectable portion of the socket protruding into said cavity; whereby, in use, said at least one resiliently deflectable portion flexes to permit insertion of the plug into the socket, and then abuts said shoulder to hold the plug captive in the socket.

Abstract: A caster pintle as disclosed having a resilient high tensile strength metal core encapsulated in a molded plastic body having a groove containing a resiliently collapsible friction ring and ribs for centering the ring in the groove prior to assembly of the pintle with a complementary socket.

Abstract: The system comprises an at least partially threaded male member of plastics material including one or more first discontinuities, such as a bolt with a plurality of substantially rigid webs between portions of a helical rib thereon, and an at least partially threaded female member of plastics material including one or more second discontinuities, such as a nut with a resiliently deflectable tongue whose free end is located beyond one end of the helical rib therein.Threaded advance of the male member, relative to the female member, causes deflection and resilient return of the first and/or second discontinuities as they pass one another, such as deflection and resilient return of the tongue as it passes each of the webs, to give an audible click and an abrupt change in drive torque or other tangible indication of the extent of said threaded advance.

Abstract: A device suitable for fixing panels comprises a male part having a mounting head and an elongate body between the mounting head and a retaining head. The retaining head has a retaining surface directed towards the mounting head, a snap-fastener surface, and a retaining edge defined by the intersection of the retaining surface with the snap-fastener surface. A female part of the device has a receptacle for the body of the male part and at least one circumferential sector for retaining the retaining head of the male part in the axial direction. The retaining edge is adapted to penetrate the retaining sector(s) to provide an axial retention opposing withdrawal of the male part from the receptacle in the female part.

Abstract: A clip assembly is formed by joining two identical clip members, each having a body portion with a bore therethrough, a pair of protrusions integrally formed on one end of the body in alignment with the bore, a hook portion on the body and a plurality of teeth lengthwise on each protrusion for ratchet engagement with the teeth on the opposed pair of protrusions as the numbers are fitted together.

Abstract: A supporting bush designed to define a connecting seat for a known type of panel fastener on a motor vehicle interior cover panel composed of a base panel and a foam portion; the aforementioned bush being composed of a first cup-shaped element, designed to be gripped in fluidtight manner between the foam portion and the base panel; a second cup-shaped element, designed to click on to the first so as to define with the same an inner cavity for receiving the head on the panel fastener; and a break-off tab for protecting a sleeve portion on the second cup-shaped element, through which sleeve portion access is permitted to the aforementioned inner cavity.

Abstract: A whistle having two chambers of different size so that each is capable of generating a sound different to that generated by the other. Each chamber is elongate and has an open mouth located at the same end of the whistle body. A mouthpiece extends angularly from that end of the body and has two open-ended passages extending therethrough, each of which has an open inner end located adjacent a respective one of the chamber mouths. The two passages are located in close side by side relationship and are arranged so that a stream of air emerging from their respective inner ends passes across a respective one of the two chamber mouths so that the two chambers generate sound simultaneously. The two chambers generate relatively high and low frequency sound respectively.

Abstract: A printed circuit board support comprises an integral plastic molding having an elongated mounting portion adapted for insertion through an aperture in a mounting panel. The mounting portion has a head adapted to span a body adapted to be positioned inwardly of said panel, and abutment means for engaging the surface of a printed circuit board or the like. Resilient retaining means extending from the body yield resiliently upon insertion through said aperture and thereafter engage the back side of said panel. The support further has a retainer portion extending beyond the abutment means for insertion through an aperture in said printed circuit board and has resilient retaining means adapted to yield upon passage through the aperture in said printed circuit board and thereafter to bear against the opposite surface of said printed circuit board to retain said printed circuit board in supported position spaced from said panel.

Abstract: A dry magnetic particle bath for non-destructive testing of a magnetizable workpiece to detect flaws comprising magnetic particles, a modified dextrose adhesive, and a carrier powder. In certain other embodiments of the invention the magnetic particle bath is instead a wet bath comprising water, magnetic particles, and modified dextrose. According to the invention, the wet bath can also contain an anti-freeze component consisting essentially of urea and ethylene glycol, glycerine or monoethanolamine to depress the freezing point of the water bath to 10.degree.-15.degree. F.; the invention encompasses wet bath formulations which contain the anti-freeze component in combination with adhesives other than modified dextrose.

Abstract: A cord retainer assembly constructed of two cooperating parts: a cord holder part and a cord lock part. The cord holder part is molded as a one-piece plastic elongate housing having a tapered nose portion with two spaced apart apertures formed at one end and having a central opening formed at the other end. The cord lock part is formed of a one-piece plastic elongate slider member which is conformably shaped to be slidably disposed within the hollow housing and has a handle portion which extends outwardly of its central opening. The slider member is formed with a pair of laterally extending gripping teeth for selectively restraining a length of cord which is threaded through the housing. The slider member is releasably latched within the housing member by a ratcheting mechanism composed of a plurality of serrated teeth formed longitudinally along an inside surface of the housing which mate with a second plurality of serrated teeth formed longitudinally along the slider member.

Abstract: Air inlet for a vehicle dash-panel of the type whereby the air supply opening is screened off. For directing the air flowing through the said opening, the inlet is provided with a number of deflecting vanes, arranged side by side and designed to divert the air flow parallel with a first plane perpendicular to the said vanes, and a pair of deflecting surfaces designed to divert the air flow parallel with a second plane perpendicular to the said first plane, and supporting the said vanes hinged perpendicularly to respective front edges coplanar with the said opening and adjacent to the said screen.

Abstract: A thermoplastic fastener having a slight taper, is friction welded to a thermoplastic workpiece. A system for friction welding the fastener includes a way of automatically stopping rotation of the fastener while contact pressure between the fastener and the workpiece is maintained.

Abstract: A plastic molded fastener is described as formed with a fastening clip and drive pin. The fastening clip has an elongate base member with an integrally formed clip member at one end and a mounting aperture adjacent the other end. The plastic drive pin extends generally perpendicular to the base member and has its pointed end held in a pre-driven position within the mounting aperture by a frangible connection. A collar is integrally formed on the base member about the mounting aperture for providing a snap fitting connection which is adapted to hold a driving tool in a stationary position. The snap fitting connection allows the drive pin to be consistently driven by the driving tool in a perpendicular path relative to the base member.

Abstract: A one-piece fastener is disclosed for loosely retaining a transversely extending branch with respect to a horizontal support wire. The fastener is molded of resilient plastic material in form of a flexible filament portion with a clip portion integrally formed at its opposite ends. Each of the clip portions have a generally tubular body with a cylindrical-shaped throughbore formed longitudinally and with an elongate slot formed lengthwise of the tubular body in direct communication with the throughbore to define a throat for receiving the support wire into the throughbore. Each end of the filament portion is connected to one of the tubular bodies at a point adjacent to its elongate slot and adjacent to one of its ends which provides an offset relationship between the flexible filament portion and the two tubular bodies.

Abstract: A transient voltage protector is provided for telephone lines and the like. An insulating plastic housing is provided with two pairs of terminals having female connections at the lower ends for association with selected terminals of a telephone terminal block. The upper ends of these terminals are of a male type and extend above the top of the housing for receipt of further elements such as bridging clips, plug-in fuse units, or line status indicators. An offset and raised portion of the housing carries a pair of zener diodes having lower wire terminals connected to two of the aforesaid terminals. The upper wire terminals of the zener diodes are connected to a grounding terminal having an upper portion extending above the housing in the form of two spaced tines for receipt of a common ground wire between the tines. The various terminals and the zener diodes and the housing have complementary structure for positioning of the terminals and the diodes within the housing.