Abstract: Fine liquid particles having about the same size are provided by an atomizer tip which includes a wall member having a plurality of generally triangular conduits passing through it. Forcing liquid through the conduits under pressure causes the liquid to exit the conduits as an accurately controlled, small droplet size spray pattern. The wall member is formed from a billet including a number of concentric tubes having in their surfaces a plurality of generally V-shaped longitudinal grooves filled with complementary filler material. This billet is constrictively reduced and sliced into discs, and then the discs are domed and the filler material is removed. The thickness of the discs corresponds to the desired thickness of the wall member. Due to doming, the conduits diverge outwardly. The atomizer tip is adapted for use as a spray nozzle which provides greater uniformity in droplet size. Specifically, the atomizer tip is adapted for use in a fuel injector for an internal combustion engine.

Abstract: Abradable seals for compressors and turbines are made of fibers and powders of an alloy consisting essentially of iron, nickel, chromium, aluminum, and yttrium. The alloy preferably contains 22-27 weight percent nickel, 18-22 weight percent chromium, 9-15 weight percent aluminum, 0.0005-0.05 weight percent yttrium, with the balance iron. Heat treatment of the alloy provides an aluminum rich phase which is uniformly dispersed throughout the alloy.

Abstract: Tufted carpeting has a unitary primary backing comprising a woven synthetic scrim with a backing layer of staple fibers needled onto its back surface before tufting. The tuft bases are at least partially surrounded by the fibers of the backing layer, and sizing is applied to the underside of the carpet after tufting. The resulting product has excellent dimensional stability, stiffness and flame retardance, and requires no secondary backing. In the preferred embodiment, the staple fibers are needled through the scrim to provide, in addition to the backing layer, a dyeable subface on the face side.

Abstract: This invention comprehends torsional strengthening of two-phase metal materials. One application of the torsionally strengthened material is in the field of springs wherein the energy storage capacity is increased. The invention provides for methods and processes for increasing the torsional strength of two-phase metal materials. Also comprehended is an apparatus that provides the increased torsional strength by its novel combination of machines.

Abstract: An improved sound attenuating device characterized by several novel structures which include (1) a foraminous conduit covered by (2) a layer of sound absorbing material of increasing static flow resistance from the inlet end to the outlet end, and (3) a housing surrounding the conduit and defining a plurality of quarter-wave standing wave cavities in series after the inlet end in operative association with the covered conduit. The present structure provides an attenuating device having a continually changing flow resistance to match the decreasing sound pressure level of the fluid flow passing through the attenuator. The structure takes advantage of the interaction that exists between the sound pressure level and changes in the static and dynamic flow resistance, such that for decreasing sound pressure levels, the dynamic flow resistance will be maintained at an optimum for the system by increasing the static flow resistance.

Abstract: A metallic velvet material comprising a woven textile pile fabric wherein at least a portion of the woven base fabric and/or the velvet surface-forming pile yarns is metallic. The metallic yarn may comprise a blended yarn formed of staple metal fibers and conventional nonmetallic textile fibers, or may be formed of continuous metal filament material. The metal fibers, or filaments, are preferably formed with rough unmachined, unburnished, fracture-free outer surfaces for improved retention in the velvet pile fabric.