Abstract: This invention relates to acetonitrile purification via an adsorption-based process. The process comprises pretreating the acetonitrile containing organic impurities such as unsaturated nitriles with a solid reagent to selectively convert the unsaturated nitriles into products more easily removed and passing the treated acetonitrile through a series of adsorbent beds to remove the resulting products and other impurities present from the acetonitrile.

Abstract: An electronic regulating system for regulating the supply of pressure medium to each brake cylinder of a vehicle having a plurality of wheels thereby preventing spinning of the wheels upon starting and locking of the wheels upon braking, comprises wheel speed sensors which detect the rotation of the wheels and which produce signals indicative of the individual rotational speeds of the wheels, and an electronic control unit which monitors the individual rotational speeds of the wheels and which controls the supply of the pressure medium to the brake cylinders based on the individual rotational speeds. The electronic control unit includes a speed signal processor which receives the signals produced by the wheel speed sensors and which determines the individual rotational speeds of the wheels and a vehicle reference speed therefrom.

Abstract: An apparatus and method for protecting an induction motor from momentary power loss in a three-phase, alternating current, power supply. The apparatus includes a circuit for detecting when the motor switches from a mode of operation as a motor to a mode of operation as a generator, and a microprocessor connected to the detector to receive the detection of a switch in mode of operation, and for generating a fault disconnect signal in response thereto to initiate disconnecting the motor from the power source. The method includes the steps of detecting when the motor switches from a mode of operation as a motor to a mode of operation as a generator and generating a fault disconnect signal in response thereto to initiate disconnecting the motor from the power source. The apparatus and method provide for robustness of the fault detection data, and for avoiding false detections of momentary power loss.

Abstract: A high speed data communication controller comprising two independent central processing units, each having its own independent program instruction fetch data path, and instruction execution data path. The data communication controller includes a dual-port serial communication subsystem and a bus interface unit operably associated with a four channel DMA controller. One central processing unit is assigned the task of handling the medium access control (MAC) layer function of a multilayered local area network protocol, while the other central processing unit handles host commands and buffer memory management functions associated with the transmission and reception of packets relating to the higher layer protocol. As a result of the present invention, efficient data communication processing is achieved within a single VSLI chip, thereby improving node and network data throughout.

Abstract: A mold for making bathtubs includes a mold receptor and a deck insert attached to the mold receptor face. The preferred deck insert has at least one projection designed to reduce the cross-sectional area of a portion of a void between the shell's deck and the deck forming face of the insert. Preferably, the distance from the outer edge of the shell's deck to the outer edge of the projection is about 16% of the length of the deck of the sanitary fixture. In an alternative embodiment, the deck insert has at least one outermost projection and at least one non-outermost projection. The outermost projection is preferably about half the height of the non-outermost projection. In another preferred embodiment, the deck insert includes at least one outermost projection and at least one non-outermost projection. The height of the outermost projection varies from a maximum height near the middle of the deck, to a minimum height near the end of the deck.

Abstract: A method of compressor over temperature protection. The method comprises the steps of monitoring the temperature of oil entering a compressor, determining an oil temperature differential between the entering and exiting oil temperatures, comparing the oil temperature differential to first and second predetermined limits, terminating compressor operation if the first limit is exceeded by the oil temperature differential, and terminating compressor operation if the second temperature limit is exceeded by the oil temperature differential for longer than a first time period.

Abstract: This invention relates to a process for preparing an attrition resistant vanadium-antimony oxide catalyst by adding to a vanadium-antimony oxide catalyst slurry a lithium compound which upon contact with the aqueous catalyst slurry provides hydroxide, such as lithium hydroxide or lithium carbonate. The process comprises the steps of preparing a catalyst slurry comprising vanadium oxide and antimony oxide, adding the lithium compound to the catalyst slurry, concentrating the catalyst slurry to increase the solids content of the slurry, and drying the catalyst slurry to form attrition resistant particles of catalyst.

Abstract: The reveal molding has a centrally located barbed stem and an umbrella-shaped cap designed to fill and span an elongated gap between adjacent structural members such as between body panel and glass window. A stabilizer portion depends from the underside of the umbrella portion and is provided with a sawtoothed gripping structure designed to mate with a complementary sawtooth structure formed on the sidewall of the stem. The umbrella portion and stem are designed to allow hinged flexing action during installation and this action is thereafter restrained by the interlocking gripping structures once the molding is installed.

Abstract: A manufacturing process for use in manufacturing magnetic field sensor head cores, comprises: providing a core formed of an amorphous ferromagnetic material on which is placed an insulating layer; mounting, a first winding that functions as a drive coil for the core over said insulating layer; providing second (37) and third (38) coils on said core (31) that respectively function as a sensor and a compensating coil for the sensor head; both the second and third coils being wound in form of a hollow cylinder 36 inside of which is positioned an assembly formed by the core 31 and the drive coil 32; supplying a first electric current to the core 31 of the sensor head, said core heating up as said first current flows through said drive winding, supplying a second and alternating electric current to that the one 38 of compensating and sensor coils 37 and 38 that surrounds the core 31 and functions as the compensating winding 38; monitoring a signal induced in the other coil 37 that functions as the sensor winding a

Abstract: A pressure sensitive adhesive composition is provided for use on cellulosic substrates which will not become tacky under high temperatures, lose adhesive properties due to contact with silicone oils, "block" when stacked prior to printing, or lose bond-forming ability with age. Non-thermoplastic pigment particles and a compound selected from the group consisting of a natural rubber latex, a graft copolymer of natural rubber and acrylic monomer and a blend of the natural rubber latex and the graft copolymer are mixed together to form an adhesive with a glass transition temperature in the range of -10.degree. to -78.degree. C., a dielectric constant of about 2.25 to 2.62 and a green strength of 0.05 to 0.75 p.s.i. The adhesive may also optionally contain a chloroprene-methacrylic acid copolymer latex and a vinyl-methacrylic acid copolymer latex.

Abstract: Three reuasable surgical/medical fabrics provide improved barrier properties, as reflected by their Suter ratings, and also posses a "hand" similar to a "cotton hand". The Suter ratings are degraded in the order of 10%-20% after 100 sterile reprocessing cycles. The fabrics are reliable free of "voids", permitting their use as a single layer barrier panel. The fabrics are woven, respectively, with false twist 100/100 warp yarns and air texturized core and effect 2/60/100 fill yarns; flat trilobal 100/50 warp yarns and air texturized core and effect 2/60/100 fill yarns; and false twist 2/50/34 warp yarns and false twist 150/200 fill yarns. The fabrics are characterized by a minimum porosity of at least 10.times.10.sup.6 pores/square centimeter and maximum average. and mean pore sizes. The fabrics have a thickness of at least 0.005 inch, a weight of at least 3.5 ounces per square yard and a filament density of at least 2.0.times.10.sup.6 filaments per square inch.

Abstract: A friction wedge for use in a railroad car truck bolster pocket which has a slanted rear wall and adjoining side walls perpendicular thereto, one surface thereof adapted to bear against a portion of a car truck side frame and a slanted surface and adjoining sides adapted to bear against the slanted rear wall and adjoining side walls of the bolster pocket. The friction wedge includes a metal body and a polymer cover providing the slanted surface and adjoining sides, with the polymer cover being formed in a plurality of sections movable relative to each other and the metal body such that, during use, the polymer sections may move into contact with the pocket rear wall and adjoining side walls.