Abstract: Improved process for fluidifying flocculated aqueous suspensions of red muds in the production of alumina from bauxite by the Bayer process, which consists:in dissolving bauxite using sodium hydroxide;then, in decanting and in washing the red muds formed in order to separate them from the alumina in successive vats, while recycling the washing waters upstream;and finally, in eliminating the red muds thus treated;and in which a flocculant (F) consisting of a polyacrylamide of molecular weight greater than ten million is introduced into the suspension of one of the successive vats;wherein a dispersing agent (D) formed by an anionic acrylic acid polymer of molecular weight lower than fifty thousand is added simultaneously with said flocculant (F) to the suspension in the same vat.

Abstract: Anatomical intrabuccal respiratory mouthpiece in two parts, namely:a first extraoral part (1) having a first extrabuccal connection piece (2) intended to be joined to the gas source, and a second intrabuccal connection piece (5) whose outlet orifice is oblate (6);a second part (10) forming a flexible orthesis, associated with the intrabuccal connection piece (5), including:vertical vestibules (11, 12) matching the anatomical shape of the vestibules, being the upper (11) and lower (12) vestibules, respectively;upper (25) and lower (26) vertical lingual rims, respectively;a plane interocclusal vestibulo-lingual pad (20) which joins the vestibules (11, 12) and the rims (25, 26) and is arranged horizontally at the junction between the upper and lower parts, the thickness of said plane pad (20) being slightly greater than that of the interocclusal gap of the jaws in the rest position;characterized:in that the oblate intrabuccal (5) outlet orifice (6) opens out within the thickness of the vestibulo-lingual pad (20)

Abstract: There is disclosed a process for optimizing the magnetic properties of a multiphase product of composition rare earth/iron/boron endowed with permanent magnet properties at ambient temperature. This composition serves as a precursor, which is first subjected to a decrepitation treatment by hydrogenation under low pressure at low temperature to obtain an intermediate hydride in pulverulent form. The pulverulent intermediate hydride is subsequently subjected to a first heat treatment under vacuum for partial dehydrogenation at a temperature below its element separation temperature. The non-separated product thereby obtained is subjected to a second heat post-treatment under an initial primary vacuum and extensively dehydrogenated until the primary vacuum is reestablished at a temperature close to 600.degree. C. The precursor can be an isotropic material obtained by fast quenching, such as wheel quenching or hot welding with a forging ratio of at least 10.

Abstract: A post operative adjustable protective socket for a patient that has undergone a transtibial amputation. The socket is formed of a single piece of semi-rigid plastic and includes a cup shaped base, a semi-circular rear shell and a semi-circular front shell that are vertically extended from the base. The rear shell has two opposed circumferential cuffs that surround the wearer's leg above the knee. The front shell extends upwardly to a height just below the cuffs. Wide elastic bands surround the upper and lower sections of the device to press the shells into secure contact against the residual limb. A support strap also surrounds the device in the region of the wearer's patella tendon to help absorb some of the impact in the event of a fall.

Abstract: A contact bar code reader is suitable for reading 2-dimensional bar codes. The reader comprises a housing having therein a source of illumination and optics for producing a diverging beam for illuminating a bar code symbol. A transparent frustoconical guide is removably attached to the housing, and has an conical angle corresponding to the beam's angle of divergence. The guide is dimensioned to encompass the bar code symbol, and its line of contact with the data carrier is substantially fully visible to the operator, who can thus confirm that the guide is in proper operating position relative to the bar code symbol prior to initiating a reading operation. A reading operation can be initiated by pressing on the guide to actuate a switch, or on a manual trigger.

Abstract: A computer system that incorporates an SQL type relational database is adapted to enterprises in which human performance is to be managed. There is a single table that contains linking information for multiple entity relationships among a plurality of information entities. Programs that cooperate with the database kernel include an entity relation manager for modifying the linker table to dynamically define entity relationships among the information entities; a hierarchal structure manager for dynamically defining hierarchal relationships among objects in the information entities; a load/unload utility, for changing information between a human-readable format and another format having a syntax acceptable to the database kernel; and an editor which provides an environment that enables a human operator to conveniently interact with the relational database.

Abstract: A plastic reusable container that can be collapsed into a small package for storage.

Abstract: This invention aims at providing a woven fabric having a structure suitable for bonding, so as to bond a so-called "tarpaulin sheet", which is bonded by sewing means and is obtained by coating a synthetic resin to a fiber base fabric, to a woven fabric such as a tape or a belt. The present invention further aims at providing a woven fabric having a structural portion enabling a woven fabric to be bonded to another woven fabric. A woven fabric 100 is divided in a longitudinal direction or in a transverse direction, or in both the longitudinal direction and the transverse direction, and either one, or both, of warps and wefts are woven more coarsely in at least one of the divided zones 22, 32 than the rest so as to form a mesh portion 2.

Abstract: A wall mounted power supply for a remote instrument handle has a novel self compensating voltage regulating circuit that remains in precise calibration despite variable voltage drops in the load, cabling, and control switches. Power output is enabled by an infrared emitter-detector combination disposed in the device's cradle that senses the absence of the instrument handle therein.

Abstract: A linear control valve that includes a flexible cantilevered beam having a seal mounted thereon that is arranged to open and close against a fluid port as the beam is flexed. The free end of the beam is in contact with a motor driven deflector and the amount of flexure controlled by selectively positioning the motor.

Abstract: An improved display rack for the commercial display of tableware comprising a back panel, having two side panels attached thereto, a plurality of full shelves in parallel relationship to one another, each abutting the back panel and side panels, at least one rotatably hinged front panel corresponding to each full shelf, each front panel positioned so that a bottom edge is aligned with a corresponding full shelf, a display pad detachably affixed to at least one front panel, at least one hinge rotatably affixing each front panel to the rack, and at least one retainer for retaining tableware on the front of the display pad for display thereof.

Abstract: Alkoxynaphthalenecarboxylic acid is produced by a process comprising the addition of 1,3-butadiene to alkoxyalkylbenzene to yield an adduct. The adduct is cyclized in the presence of an acid catalyst to alkoxyalkyltetralin. The tetralin derivative is then dehydrogenated to produce aloxyalkylnaphthalene, which is oxidized to alkoxynaphthalenecarboxylic acid.

Abstract: A wire rope vibration isolator includes a coil of wire rope having a predetermined number of individual consecutive coils, a first crimp bar, and a second crimp bar. Each of the crimp bars is essentially rectangular in shape and has a pair of opposing side surfaces. A series of lateral holes extending from one side surface to the other side surface of each of the bars is provided so that the predetermined number of individual consecutive coils may be threaded through the series of lateral holes of each of the bars. A crimping force is applied to each of the two crimp bars at a point where each of the individual coils passes through a respective bar. The coils are thereby secured in a fixed position relative to one another while remaining elastically deformable. A spring-like quality is thus imparted to the coil of wire rope so that the first crimp bar and the second crimp bar may move relative to each other to dissipate vibrational energy.

Abstract: A warmer and dryer for fabric articles having a vertically disposed heated frame upon which one or more articles can be draped. A heated fluid is circulated through the frame by a pump that is mounted in the base of the frame. The frame is enclosed by a flexible enclosure made from a material that retains heat while at the same time allowing moisture to pass therethrough into the surrounding ambient. Sufficient heat is provided to warm the atmosphere within the enclosure.

Abstract: This plate heat exchanger with parallel and counterflow circulation of the heat-exchange fluids is constructed by stacking a determined number of ribbed plates (4) of the same size, clamped against one another between two flanges (1,2), said plates having openings (5,6,7,8) in their corners, defining, within the stack, supply and outlet channels respectively for the heat-exchange fluids.The plates are made of bulk machined graphite, previously impregnated with a waterproofing material, and in particular a resin.

Abstract: A treatment system for aerating, cooling and heating or draining a site such as a golf course green or a playing field. A mobile blower can be connected and disconnected with an underground duct network situated under the site through a suitable valving arrangement so that one blower can be used in servicing a number of sites.

Abstract: An electronic circuit for measuring current in a working circuit is provided with a first operational amplifier having a positive input, a negative input, and an output connected to at least one in-line amplifier to form a first current path. A second operational amplifier having a positive input, a negative input, and an output connected to a differential amplifier is provided within the circuit to form a second current path. An input terminal is connected to the negative inputs of each of the operational amplifiers to provide a connection between the electronic circuit and the working circuit. A variable conductance component is connected in series between the input terminal and the negative input of the second operational amplifier to control the flow of variable currents through the two current paths.