Abstract: An interlocked yarn having a plurality of continuous filaments which have substantially no twist and having at spaced intervals along the length thereof at least one of the filaments encircling the other filaments to interlock the filaments together. The method of making the interlocked yarn includes feeding a plurality of continuous filaments into a fluid jet which has a fluid medium passing therethrough in a direction substantially counter to the direction of travel of the filaments. The interlocked filaments are pulled away from the fluid jet at a rate less than the feed rate. This produces an interlocked yarn having some of the filaments encircling the other filaments to provide an interlock at spaced intervals which eliminates the need to twist the bundle of filaments.

Abstract: Methods of making network structures include forming on one side of a sheet of thermoplastic polymer a plurality of parallel continuous main ribs and forming on the other side of the sheet in a different direction a plurality of parallel discontinuous tie ribs. The tie ribs are discontinuous in the areas where they cross over the main ribs to eliminate any increased thickness at the cross-over points of the main ribs and tie ribs. The ribbed sheet thus formed is drawn in either one direction or in two preferably perpendicular directions to open the sheet into a network structure and to orient the main ribs and preferably also to orient the tie ribs.

Abstract: A radiation resistant cable is made by wrapping a barrier film over a conductor and covering it with a silicone saturated asbestos covering. The asbestos is passed through one or more dies to compact the asbestos covering and accurately size it. One or more layers of polyimide tape is wrapped about the asbestos. The polyimide tape is covered by a heat-sealable tape over which a fiberglass cover is braided. The cable is then heated to seal the heat-sealable tape to itself as well as to the adjacent layers. The cable is then passed through a coating bath to impregnate and saturate the fiberglass braid, following which the cable is heated to extract the solvent in the coating solution.

Abstract: A composite lightweight wheel rim for spoke wheels having an inner and an outer ring separated by a low density rigid foam core. The inner and outer rings are formed from a composite fiber/resin material having the fibers positioned in a predetermined orientation. This structure forms a stiff, lightweight wheel rim suitable for many spoked wheel applications.

Abstract: Multi-cavity filaments having improved resilience and anti-soiling properties have continuous cavities along their length with each cavity having a vertex angle formed by two sides or legs of the cavity of between about 65.degree. and 140.degree.. The vertex angle of each cavity points substantially toward the center axis of the filament. The cavities are spaced from each other and from the periphery of the filament in a manner producing a filament having good physical and aesthetic properties.

Abstract: This invention relates to a golf tee composed of water-soluble thermoplastic material and dispersed therein from about 1 to about 30% by weight, based on the weight of the golf tee, of a fertilizer and to a method of producing said golf tee by injection molding.

Abstract: A method of injection molding wherein a pair of separable mold plates are initially urged together and fluid plastic is injected into a mold cavity formed between the mold plates to form an article. The injection pressure of the fluid plastic is utilized to generate forces sufficient to overcome the internal forces urging the mold plates apart and thus hold the mold plates together until the material being molded solidifies either by cooling, chemical reaction or phase change.

Abstract: This invention relates to a fertilizer stick composed of water soluble thermoplastic material and dispersed therein about 10 to about 80% of fertilizer material. The fertilizer stick gradually dissolves when placed in a potting medium or soil to supply plant growth nutrients to the roots of a plant.

Abstract: A method and apparatus for controlling static charges on film formed into packages and filled with particulate material to prevent the particulate material from attaching to the film and degrading the seal area of the package.

Abstract: Methods of making continuous length articles of reinforced plastic material includes passing rovings of temperature resistant material through a crosshead extruder to impregnate the rovings with a thermoplastic polymer under high pressure. The impregnated rovings are pulled from the extruder through a die and are cooled and shaped into a void free article having a desired cross-sectional shape.

Abstract: This invention relates to a method and apparatus for making pile fabrics wherein a sheet of longitudinally striated thermoplastic film formed into loops is fusion bonded to a thermoplastic backing sheet by sonic energy to bond the film to the backing sheet at the lines of contact without loss of orientation in either the striated film or the backing sheet and then subsequently the bonded striated film is fibrillated to separate the loops into individual filaments thereby forming a pile fabric.

Abstract: The apparatus of this invention relates to an injection molding device having separable mold plates into which fluid plastic is injected to form an article and which utilizes the injection pressure of the fluid plastic to generate forces sufficient to overcome the internal forces urging the mold plates apart and thus hold the mold plates together until the material being molded solidifies either by cooling, chemical reaction or phase change.

Abstract: A U-shaped molded plastic furniture frame for use in fabrication of a barrel shaped chair. Each end of the frame has a box portion formed therein for receiving a front support member of a desired length to provide a chair having a preselected width. The frame also has facilities integrally molded therein for receiving the arms, legs and backs of a chair. Additionally, other facilities may be provided for the easy attachment of springs, spring supports, or other support members to the frame.

Abstract: This invention relates to batteries with improved shelf life. When a relatively high resistance element is connected across the terminals of a battery, the resulting low current drain inhibits the self discharge of the battery and thus improves the shelf life. The resistance element can be built into the battery or mounted externally. The invention also relates to a battery-operated article, such as a flashlight, having a high resistance load built into the article to contact the terminals of the battery to provide a low current drain when the article is not being used.