Abstract: An optical method for identifying an immobile target having a homogeneous surface is disclosed. Light reflected from the surface of the target is electro-optically detected. The Stokes parameters of the detected light are measured in four preselected, adjacent, spectral bands. A discrete value termed the polarization intensity index (PII) is calculated using the measured Stokes parameters. Each homogeneous surface has a characteristic PII value. Substantially identical surfaces display substantially identical PII values. By comparing PII values of unidentified target surfaces with a set of previously determined PII values for different, known target surfaces, the geological nature of an unidentified target surface may be determined.

Abstract: A process for producing basic aluminum magnesium carbonate, Al.sub.2 Mg.sub.6 (OH).sub.14 (CO.sub.3).sub.2.4H.sub.2 O, by carbonating an aluminum hydroxide (Al(OH).sub.3) and magnesium hydroxide aqueous reaction mixture with carbon dioxide in the presence of at least 6 moles of a base selected from the group consisting of ammonia, mono, di or trialkylamines, pyridine or piperidine, per mole of Al.sub.2 O.sub.3 present. The product is useful as an antacid.

Abstract: An aquatic vacuum hose swivel cuff coupling comprises, in combination, a blow-molded vacuum hose and a molded swivel cuff. The hose includes one end which terminates as a right cylindrical end portion and a hose ring provided substantially adjacent to the cylindrical end portion whereby a circumferential groove is provided between the cylindrical end portion and the hose ring. The swivel cuff component has a seating portion for receiving the cylindrical end portion of the hose and an annular ring adapted to fit within the circumferential groove of the hose, the annular ring being provided about the hose entrance to the seating portion of the cuff. The cylindrical end portion of the hose is maintained within the seating portion of the cuff by the annular ring being disposed within the circumferential groove whereby the hose may be swivelably rotated within the cuff. The hose end components are extruded with the continuous extrusion blow-molded hose thereby eliminating the need to weld components such as seals.

Abstract: An AC induction motor control system wherein two pulse trains are generated, one pulse train including a pulse for each increment of rotor movement, and the other pulse train having pulses occurring at a rate proportional to slip. The pulse trains are combined in a counter which controls formation of synthesized winding excitations developed from pre-recorded sine values. The slip pulse train is developed according to pre-recorded slip factors selected as a function of rotor speed and modified in accordance with desired torque.

Abstract: Process for the preparation of bodies of expanded cross-linked polyethylene, with closed cells, comprising the steps of:melting a polymer of ethylene selected among ethylene homopolymers, copolymers of ethylene with alpha-olefins, copolymers of ethylene with conjugated diolefins and relevant mixtures;homogenizing the polymer of ethylene in the molten state with a quantity of from 0.1 to 2.5% by weight of a cross-linking agent and with a quantity of from 2 to 25% by weight of an expanding agent, the cross-linking agent and expanding agent having a decomposition temperature higher than the melting point of the polymer of ethylene, the homogenizing step operating at temperatures of from 130.degree. to 150.degree. C., and for times of from 5 to 10 minutes;forming the homogeneous mixture in a solid parallelepiped shape by means of extrusion and subsequent cooling, or by means of moulding wherein the extrusion or moulding step is operated at temperatures within the range of from 130.degree. to 150.degree. C.

Abstract: Apparatus for transferring solid particles to a receptacle comprises a loading tube (2) surrounded at or near its base by a gas supply chamber (7) terminating in a Coanda surface (9). A slot (10) between the outlet from the loading tube (2) and the beginning of the Coanda surface (9) forms a Coanda nozzle. A throttle (3) is preferably fitted in the loading tube (2) to form an annulus (4) down which the particles flow to the slot (10). A gas supply line (8) preferably enters a gas supply (7) tangentially to supply gas to the Coanda nozzle. The apparatus is particularly suitable for loading catalyst into a reactor.

Abstract: Polysiloxanes of specified molecular weight and molecular weight distribution are effective anti-foam agents for reducing foaming in crude oil/gas separators. They are particularly useful in breaking microgas dispersions.The polysiloxanes, preferably polydimethyl siloxane, contain not more than 10% by weight of components of molecular weight 50,000 and lower, at least 15% by weight of components of molecular weight 200,000 and higher and not more than 6% by weight of components of molecular weight 370,000 and higher, molecular weights being expressed as polystyrene equivalent molecular weights.

Abstract: New and improved fungicidal grout compositions are disclosed having a Portland cement base with a halogenated aromatic dinitrile added as an active fungicidal ingredient. The dinitrile is first wet blended with an inert solid fungicidal carrier and a surfactant, then dried and finely divided into a powder. The powder is blended with the other dry ingredients of a Portland cement grout to form a grout composition which is ready to be mixed with water to form a workable mortar for the grouting and setting of ceramic tiles. The resulting fungicidal grout compositions have improved fungicide dispersion and prolonged leach-life characteristics.

Abstract: A switch apparatus designed to replace a conventional on/off switch for the purpose of allowing an outside light to be flashed continuously on and off, as well as permitting the light to be turned on and off in the conventional manner is disclosed. The switch apparatus may be directly substituted for a conventional on/off switch using the two wires already in the switch box. The switch apparatus incorporates either a standard or an asymmetrical mechanical switching mechanism for turning the light on or off conventionally, and for selecting the flashing mode. When the flashing mode is selected, an electronic circuit continuously switches the flow of power to the light bulb on and off via a power switcher controlled by an oscillator. Inserted within an actuator handle of the switching mechanism is a neon light which is on when the switch apparatus is in the off position and off when the apparatus is in the on position.

Abstract: A device for replacing the rolls of rolling stands, comprising, on a base, a first carriage provided with at least one pair of seats able to receive a rolling stand, and a pair of carriages which are mobile in a direction normal to the first carriage and support the two stand housings. The first carriage is provided with a roll support which is adjustable and freely removable.

Abstract: A brush holder assembly providing longer brush life and easy brush replacement is disclosed. The assembly uses a removeable spring bracket to extend a double coil constant force extension spring straddling a brush. The bracket, straddling the spring and brush, is inserted into a brush holder, whereupon it slideably engages the coils of the extension spring, causing it to extend. The bracket is removeable from the holder so that the extension spring and brush can be removed to replace a worn or broken brush.

Abstract: There is provided a new class of derivatives of 2-nitro-5-(substituted-phenoxy) phenylalkanone oximes and imines that have pre- and post-emergence herbicidal activity.

Abstract: A resinous protective coating useful in adhering plastics to metallic substrates. The protective coating is particularly useful as a solder mask and in the manufacture of printed circuit boards with circuit patterns having a resolution of at least 0.25 mm lines and spaces thereon. The protective coating comprises resins dissolved in solvents, wherein the coating, upon being subjected to heat, goes from a liquid or soft "gel-like" state into a solid phase without bleeding. The protective coating is resistant to copper, nickel and gold electroplating baths, adheres to insulating substrates, adhesive coated base materials as well as metallic substrates and is capable of withstanding the thermal shock of dip soldering.

Abstract: There is disclosed a strong, light-weight, rigid, molded, plastic luggage provided with wheels and a retractable handle. The luggage ensemble utilizes the shape of respective individual pieces of the luggage and retention means to hold them in assembled relationship and utilization of the retractable handle and the wheels facilitate transportation of the relatively large load formed by the ensemble by an individual.The process for making the luggage, due to the unique structural design of its elements and the materials from which they are made, comprises unique, yet simple, molding and manufacturing steps which allow for facile assembly of a wide variety of luggage parts to form the completed product.

Abstract: A method of forming Y shaped support structures by diffusion bonding and/or superplastic forming wherein layers of metal capable of diffusion bonding and/or superplastic forming are placed in a sandwich-like assembly having a top, bottom and intermediate layers, the layers having been selectively coated with stop-off. The sandwich assembly is subjected to sufficient pressure and heat to diffusion bond and superplastically form the sandwich assembly into a Y shaped stringer or support structure. The layers and/or a reinforcing member are selectively coated with stop-off so as to form at least two Y shaped support structures.

Abstract: The heat retaining article according to the invention comprises at least one inflatable envelope attached on a sheet material. The envelope is made of an air-impermeable sheet which is produced by treating a cloth with at least one synthetic or natural rubber. The heat retaining property of the article can be controlled by adjusting the amount of air filled in the envelope.

Abstract: Flame stabilizer for the outlet of a pipe flare takes the form of a cylinder co-axial with, and inserted into the mouth of the flare, the cylinder being surmounted with a cone diverging in the direction of gas flow. The angle of the cone is from 20.degree. to 40.degree. from the horizontal and the length of the cylinder within the mouth of the flare is from 10 to 40 times the mean radial distance between the inner circumference of the pipe and the outer circumference of the cylinder.

Abstract: A method and apparatus for automatically sensing and maintaining registration of each of the color cylinders utilized in a multi-color printing press is disclosed.Predetermined register marks are printed in the non-image areas on the sheet to be printed. Typically, in a four-color printing process, the black image is used as a reference, and registration of the other three image colors is achieved relative to the black image. Accordingly, a register mark for each process color is printed in the same location as a corresponding black reference register mark.The reference register marks are configured such that the average reflectance of the printed overlay will change as the registration of the color image changes with respect to the black image. In general, the configuration of the register marks for the black and color images differs.The reflectance of each printed overlay is measured on the printing press, while the sheet is moving.

Abstract: A high speed DC brushless motor in which the stator is toroidal and the stator core does not include winding slots. In the preferred embodiment the core material for the stator is an amorphous metal alloy which provides high speed motor efficiency. For some applications core materials like ferrite or low silicon-alloys can be used. According to one embodiment of the invention a ferrite shielding ring can be added surrounding the motor to further improve high speed efficiency.

Abstract: There is disclosed a process for selectively separating hydrogen sulfide from gaseous mixtures which also contain carbon dioxide by chemical absorption with a substantially anhydrous solution of a tertiary amine, such as methyl diethanolamine, and an auxiliary organic solvent, such as sulfolane.