Abstract: A Cr/Tm/Er-doped, yttrium- or lutetium-garnet host material crystal for a solid-state laser, wherein about 3 to about 8 atomic percent of the yttrium or lutetium, respectively, crystallographic sites are occupied by Tm.sup.3+ ions, about 7 to about 22 atomic percent of the yttrium or lutetium, respectively, crystallographic sites are occupied by Er.sup.3+ ions, and about 0.6 to about 1.6 atomic percent of the octahedral sites of the garnet structure are occupied by Cr.sup.3+ ions, which crystal lases under the influence of a pumping means at a wavelength of no more than about 2.7.mu..

Abstract: A desiccant type air dryer for an air supply system for a motor vehicle brake system. The air dryer incorporates features for convenient mounting and dismounting of a desiccant cartridge to the air dryer body assembly. This connection is achieved through the use of an externally accessible through bolt which passes through the body assembly and engages a central threaded boss on the load plate of the desiccant cartridge. Interlocking engagement between the desiccant cartridge and body assembly prevent these parts from rotating relative to one another during mounting and dismounting of the cartridge. The desiccant cartridge is readily removed through engaging the through bolt driving head using conventional tools.

Abstract: Air dryer mechanism for a compressed air system includes a cover member, a desiccant housing, and an adapter member securing the desiccant housing to the cover member. In one embodiment, the adapter member is a integral purge volume which is releasably attached to both the cover member and to the desiccant housing and which defines a purge volume which stores purge air for later regeneration of the desiccant. In another embodiment, the adaptive member is a plate which is attached to both the cover member and the desiccant housing and provides flow paths communicating the supply port to the desiccant and the desiccant to the delivery port. The second embodiment, the cover member is provided with a purge volume port for connection to a remote purge volume.

Abstract: A speed signal conditioning and test circuit includes a comparator which is connected to a digital input port of a microprocessor and which switches its output in response to the alternating current generated by the sensor when sensing wheel speed. A test sequence is initiated by injecting a signal into a tuned circuit formed by the inductance of the sensor coil, the filtering capacitors, and associated circuit resistances. The voltage output of the tuned circuit increases exponentially and switches the comparator to provide a test pulse of a predetermined time period. The microprocessor times the pulse to establish that an operative sensor is present. Since the inductance of the coil is switched out of the circuit in the case of an open or shorted sensor coil, no pulse is generated and the microprocessor accordingly determines that a defective sensor is present.

Abstract: A process for the reduction of methylbenzofuran (MBF) impurities in phenol obtained from the decomposition product of cumene hydroperoxide requires treating the phenol to reduce the level of acetol, contacting the phenol containing a low level of acetol with an acid resin at sufficient temperature and residence time to reduce the level of MBF by conversion to higher boiling compounds, then distilling the phenol to separate phenol from higher boiling compounds. The phenol may be treated in known ways, such as by treatment with an amine, to reduce the level of acetol. The phenol containing a low level of acetol is contacted with a strong acid resin to reduce the level MBF.

Abstract: Yarns are prepared by spinning PEN or other semi-crystalline polyester polymers made from similarly rigid monomer combinations to a state of optimum amorphous orientation and crystallinity. This is accomplished by selection of process parameters to form an undrawn polyester yarn of birefringence at least 0.030. The spun yarn is then hot drawn to a total draw ratio of between 1.5/1 and 6.0/1 with the resulting drawn semi-crystalline polyester yarn having Tg greater than 100.degree. C. and a melting point elevation at least 8.degree. C. The preferred yarn has a tenacity at least 6.5 g/d, dimensional stability (EASL+Shrinkage) of less than 5%, and shrinkage 4% or less. The resulting yarn exhibits surprisingly high modulus and tenacity together with low shrinkage when compared to prior art yarns.

Abstract: The present invention relates to high strength, high modulus polyethylene filaments which form composites having improved shear strength and composites formed from said filaments.

Abstract: A flexible composite of manufacture especially suitable for use as a ballistic resistant body armor. An improved penetration resistant composite of the type comprising at least one substrate layer having one or more planar bodies affixed to a surface thereof, the improvement comprising laminated planer bodies comprising at least two layers, at least one or said layers being a metal layer positioned on the impact side of said bodies exposed to said threat and at least one of said layers being a fibrous layer comprising a fiber network in a polymeric matrix.

Abstract: A flexible article of manufacture especially suitable for use as a ballistic resistant body armor which comprises one or more composite layers, at least one of said composite layers comprising a base layer having a plurality of planar bodies positioned between two sandwiching flexible layers out of contact with each other and a plurality of planar bodies positioned on a surface of said base layer out of contact with each other and in disalignment with the sandwiched planar bodies.

Abstract: A flexible article of manufacture especially suitable for use as a ballistic resistant body armor which comprises at least one substrate, said layers being a fibrous layer, and at least one layer having a plurality of bodies sewn to at least one surface of said substrate layer, said bodies having one or more flexible seams which allow portions of said body to flex along said seam.

Abstract: Brazing of metal parts employing a low temperature, high strength metal alloy is disclosed. The alloy has a composition consisting essentially of about 6.10 to 6.66 atom percent chromium, about 2.43 to 2.46 atom percent iron, about 10.06 to 25.10 atom percent boron, about 3.22 to 12.85 atom percent silicon and the balance essentially nickel and incidental impurities, the composition being such that the total of nickel, chromium and iron ranges from about 71.68 to 74.58 atom percent and the total of boron and silicon ranges from about 25.42 to 28.32 atom percent. Such an alloy is suitable for brazing .gamma.' superalloys and stainless steels at temperatures ranging from about 927.degree.-1010.degree. C. to provide strong, low cost joints.

Abstract: Metallic glasses having high permeability, low coercivity, low ac core loss, low exciting power, and high thermal stability are disclosed. The metallic glasses are substantially completely glassy and consist essentially of about 71 to 79 atom percent iron, about 1 to 6 atom percent of at least one member selected from the group consisting of chromium, molybdenum, tungsten, vanadium, niobium, tantalum, titanium, zirconium and hafnium, about 12 to 24 atom percent boron, about 1 to 8 atom percent silicon, 0 to about 2 atom percent carbon, plus incidental impurities, the total of boron, silicon and carbon present ranging from about 18 to 28 atom percent. The alloy is heated treated at a temperature and for a time sufficient to achieve stress relief without inducing precipitation of discrete particles therein. Such a metallic glass alloy is especially suited for use in devices requiring high response to weak magnetic fields, such as ground fault interruptors and current/potential transformers.

Abstract: An apparatus and method for casting metal strip include a moving chill body that has a quench surface. A nozzle mechanism deposits a stream of molten metal on a quenching region of the quench surface to form the strip. The nozzle mechanism has an exit portion with a nozzle orifice. A depletion mechanism supplies a reducing gas to a depletion region located adjacent to and upstream from the quenching region. The reducing gas reacts exothermically to lower the density provide a low density reducing atmosphere within the depletion and substantially prevent formation of gas pockets in the strip.

Abstract: An amorphous metal alloy which is at least 90% amorphous having enhanced magnetic properties at elevated temperatures and consisting essentially of a composition having the formula Fe.sub.a Si.sub.b B.sub.c wherein "a", "b" and "c" are atomic percentages ranging from about 79.4 to 79.8, 6 to 8 and 12 to 14, respectively, with the proviso that the sum of "a", "b" and "c" equals 100.

Abstract: An axial field flow-through rotor apparatus comprises a structure formed of magnetic strip wound around a hub in such a way that the first and last layers of strip have surfaces that form coaxial cylinders and edges that define the inner and outer perimeters of parallel washer-shaped faces. The distance between the washer-shaped faces corresponds to the width of the magnetic strip. A plurality of equally spaced radial slots are cut into one of these faces to a selected depth corresponding to a portion of the strip width. A spider that is formed of conductive material and has one spoke for each slot is then placed into the cut face. A plurality of equally spaced radial slots are then cut into the other face at locations that correspond to those at which slots were cut into the first face and to a depth that corresponds to the previously uncut strip width. Thereafter, a second spider, formed of a conductive material and having one spoke for each slot, is placed into said other face.

Abstract: Tin-based alloys that include micro-additions of certain elements avoid the discoloration that otherwise afflict those alloys when they are melted. The discoloration, which results from tin oxidation, correlates with poor performance of the alloys in filler metal applications. A preferred method of preparing the alloys of the invention is by rapid solidification from the melt.

Abstract: A ground fault interrupter is adapted to be connected to a circuit having a supply current and a return current. The interrupter has a detection mechanism, including one or more than one cores, for detecting one or more than one ground fault currents. The core is composed of a metal alloy which is at least about 90 percent glassy and which consists essentially of a composition having the formula Co.sub.a Fe.sub.b Ni.sub.c M.sub.d B.sub.e Si.sub.f where M is at least one selected from a group consisting of Cr, Mo, Mn and Nb, the quantity a, b, c, d, e and f are in atom percent and the sum (a+b+c+d+e+f) is equal to 100 where "a" ranges from about 66 to 71, "b" ranges from about 2.5 to 4.

Abstract: A series of glassy metal alloys with near zero magnetostriction and Perminvar characteristics of relatively constant permeability at low magnetic field excitations and constricted hysteresis loops is disclosed. The glassy alloys have the compositions Co.sub.a Fe.sub.b Ni.sub.c M.sub.d B.sub.e Si.sub.f where M is at least one member selected from the group consisting of Cr, Mo, Mn and Nb, and "a-f" are in atom percent where "a" ranges from about 66 to 71, "b" ranges from about 2.5 to 4.5, "c" ranges from about 0 to 3, "d" ranges from about 0 to 2 except when M.dbd.Mn in which case "d" ranges from about 0 to 4, "e" ranges from about 6 to 24 and "f" ranges from about 0 to 19, with the proviso that the sum of "a", "b" and "c" ranges from about 72 to 76 and the sum of "e" and "f" ranges from about 25 to 27. The glassy alloy has a value of magnetostriction ranging from about -1.times.10.sup. -6 to about +1.times.10.sup.-6, a saturation induction ranging from about 0.

Abstract: Apparatus is provided for fabricating continuous metal strip composed of a low density, readily oxidizable aluminum based alloy. The allow is cast directly from the melt through a slotted nozzle onto a moving chill substrate. A scraping mechanism located upstream of the nozzle is adapted to ride on the substrate and remove therefrom the gaseous boundary layer associated therewith. Disposed between the scraping mechanism and the nozzle is a gas supply mechanism adapted to introduce a replacement gas that is carried by the substrate to the nozzle. A shielding means configured to form a semi-enclosed chamber around the nozzle and the substrate apparatus to direct and confine the replacement gas in the vicinity of the nozzle. The alloy preferably has the form of a foil and a composition consisting essentially of about 10 to 13 weight percent silicon, 0 to 3 weight percent magnesium, 0 to 4 weight percent copper, 0 to 0.

Abstract: A brazing process is disclosed for joining two or more metal parts. The metal parts are brazed by interposing between the parts to be joined a brazing paste composed of a homogeneous microcrystalline rapidly solidified alloy powder having a composition consisting essentially of about 15 to 40 weight percent copper, 0 to 32 weight percent zinc, 0 to 24 weight percent cadmium, 0 to 3 weight percent nickel and 0 to 10 weight percent tin, the balance being silver and incidental impurities, and a phase structure such that the largest dimension of any precipitated phase ranges from about 0.01 to 0.1 micrometer, heating the powder to melt the powder, and thereafter cooling the parts to produce a brazed product. The brazing process can be carried out at lower temperatures as compared to prior art processes employing conventional BAg-alloy powders.