Abstract: A conduit for drip irrigation systems having a wall of a pierceable material characterized by a series of inwardly formed dimples along the length thereof and arranged to be pierced by a piercing member on an off-take or sprinkler, the dimples having a selected wall thickness in relation to the wall of the conduit, the conduit being optionally provided with ribs at the dimples to give further securing means and optionally including a tension wire or member for support.

Abstract: Pipe insulation is disclosed made up of right cylindrical elements, or washers, held together by a flexible coating and in which the fibres are aligned in planes perpendicular to the cylindrical axis. The elements have central bores to receive pipes to be lagged. The elements have excellent axial compressibility and can therefore be used around bends in pipes without cutting.

Abstract: A plastic extruded bag construction comprises a unitary one piece plastic extrusion including a thin wall plastic closure web area which may serve as a gussett normally extending into the bag and adapted to be projected from the mouth of the bag as a pouring spout. Pull flange portions of substantial length all in one piece in the extrusion together with the closure web have proximal ends joined respectively to opposite sides of the closure web area. Separable resiliently flexible interlocking complementary fastener profiles integral in one piece in the extrusion with the closure web area and the pull flange portions adjacent to the proximal ends of the pull flange portions are arranged to be interlockingly separably coupled together and separated by manipulation of the pull flange portions and flexing of the closure web area.

Abstract: An article of protecting high pressure hydraulic lines, fuel lines and the like is disclosed. The article includes a silicone polymer coated and impregnated glass fiber woven sheet. The sheet is self-coiling and normally assumes the configuration of a coiled, generally cylindrical sleeve. The woven glass fiber sheet is cut along a full bias so as to increase the flexibility of the normally coiled sheet when installed on the line to permit the sleeve and protected line to assume curved configurations without buckling or separation of the sleeve. The sheet is uncoiled and snapped around the high pressure line and a high temperature silicone adhesive seals an elongated, longitudinal seam defined by the overlap of the lateral edges of the sheet.

Abstract: A cardboard insert for reinforcing collapsible packages, such as see-through plastic bags, is formed from a onepiece blank in which a number of panels are separated by score lines. The panels are sized and shaped to define the desired form, generally a right paralleliped, and the mating edges of the insert blank are pre-slit - and alternate tabs bent inward to form interlocking fingers. The interleaved projecting tabs define a locked seam which is, additionally, reinforced by the adjoining inward-bent tabs. The seam is formed by bending the several panels along the score lines to form the finished shape of the insert, and interleaving the projecting tabs of the free edges.

Abstract: The disclosure relates to a coin wrapper comprising a sheet of transparent flexible material. The sheet can be snapped to enable it to be formed into a cylinder with predetermined dimensions. Inner circular ridges are provided near both ends of the cylinder to retain coins therein.

Abstract: A waveguide element is formed of a body of plastics resin, such as, acrylonitrile-butadiene-styrene resin, having a tubular portion open at its opposite ends and flanges directed outwardly at such ends, and a conductive layer, for example, of an electroless plated metal such as tin-cobalt alloy, covering the inner surface of the tubular portion and the surfaces of the flanges which face axially in the directions that the respective ends open. For ease of molding or forming the body of plastics resin, such body may be comprised of a pair of complementary parts divided at a plane extending longitudinally in respect to the tubular portion, with such parts having mating flanges directed outwardly along their longitudinal edges and with the conductive layer also covering the confronting surfaces of the mating flanges.

Abstract: A tubing article is fabricated from a fluid permeable fibrous plexifilamentary polyolefin material having a porosity .epsilon. of 0.5 to 0.7, a contact angle of greater than 85.degree., and a Gurley-Hill porosity in the range of 4 to 70 sec/100 cc.The tubing is particularly useful in sub-surface and trickle or drip type irrigation systems used in agriculture.

Abstract: A dispensing and packaging system for pellets such as ampules or vials. The system comprises an elongated resilient plastic tube in which the pellets are arranged in a line. The tube is of slightly smaller inner diameter than the pellets; and it is slit along its length so that it expands circumferentially to accomodate the pellets. The plastic material of the tube is sufficiently flexible and resilient at room temperatures to neck down in regions between adjacent pellets or in regions of the pellets which are of small diameter. This necking down provides restraint against axial movement of the pellets to hold them securely in the tube while allowing them to be dispensed individually with a minimum of difficulty.

Abstract: This invention relates to a tubular mold having excellent resistance to stretch. The mold is a "duplex type" flexible tubular mold comprising an outer film laminate comprising:A first film ply of cellophane having a saran film bonded to its outer and inner surfaces;A second film ply of biaxially oriented polypropylene having saran coatings bonded to its outer and inner surfaces, the film ply being bonded to the coated cellophane by an adhesive; andAn inner film laminate comprising a film ply of biaxially oriented polypropylene having a saran coating on both sides.