Abstract: A system for cleaning particulate matter from a mining car in which a nozzle directs a high pressure fluid against packed particles within the mining car to loosen the same, and withdraws the packed particles and fluid from the mining car with a vacuum flow thereof.

Abstract: An upholstery system method and apparatus for furniture and the like in which the upholstery covering is releasably affixed to a base member for enabling changing of the covering as desired. A clasp apparatus adapted for mounting with the base member for releasably securing upholstery coverings such as sheets, panels, fabrics and the like with the base member is also disclosed.

Abstract: Deep well screen and method of making same wherein a wire screen sleeve having longitudinal wires arranged in a generally cylindrical shape, with external wrapping wire welded thereto, is positioned over a perforated pipe having an external diameter substantially equal to the internal diameter of the sleeve, and wherein annular welds are provided between each end of said wire screen and said pipe to close the space therebetween at such ends and to secure the sleeve to the pipe without exceeding the external diameter of said wrapping wires.

Abstract: A novel process for removing endotoxin from biological fluids such as parenteral fluids and for removing or reducing the level of endotoxin from the blood of animals is disclosed. The novel process includes the utilization of certain non-ionogenic hydrophobic synthetic plastic polymers that have been found to be capable of adsorbing endotoxin from the biological fluids when placed in intimate contact therewith.

Abstract: A collapsible shipping container having overlapping upstanding walls and a collapsible reusable liner providing a sterile environment for the container contents when in the erected position. A removable lid effects a seal with the upstanding walls to prevent entry of undesired matter into the enclosed container and enable vertical stacking of a plurality of the containers.

Abstract: A hydraulic jar for applying a jarring blow to an object stuck in a well wherein two separate annular fluid chambers are provided in the jar, with one of the chambers confining a body of operating hydraulic fluid and means for restraining relative longitudinal movement of the jar for developing tension and stretch in the drill string so as to produce the jarring blow, and with the second annular fluid chamber confining a body of heavy lubricating fluid and splined portions and jarring surfaces to isolate foreign particles from the operating fluid chamber to prevent or inhibit internal jamming or sticking during actuation. Because the means disposed in the operating fluid chamber are subjected only to forces developed during the pulling stroke, the operating fluid chamber may have a greater area for the development of greater pull loads at lower hydraulic pressures than prior hydraulic jar.

Abstract: A guidance apparatus for re-entering a sub-sea wellhead or christmas tree after the guidelines extending to the water surface have been removed. The apparatus includes a remotely actuated marker buoy secured by a reeled line to an upwardly projecting keyed buoy post at the wellhead and a second upwardly projecting keyed post is positioned near the well centerline adjacent to the buoy post and the wellhead. The apparatus also includes a re-entry funnel adapted to be run from the surface on a cable attached to either post and having an internal cam engageable by the key on the post to orient the re-entry funnel and align any tools carried thereby with respect to the wellhead, tree or other parts of the sub-sea wellhead structure.

Abstract: A new and improved canopy is adapted to be mounted on a vehicle and is movable between a retracted position and an extended position where a cover extends outwardly from the vehicle. In one embodiment of the invention, a substantially enclosed canopy unit is formed by extending covers from opposing sides of a vehicle positioned on a panel floor to form a top and a sidewall attached to the panel floor.

Abstract: A new and improved apparatus and method for lining walls of furnaces, and other high temperature equipment, wherein insulating blankets are folded and supports are mounted in the folds thereof for mounting to the furnace wall to insulate the furnace. In some applications, the lining apparatus is formed into preformed insulation blocks for installation as insulating linings.

Abstract: A control valve providing various predesignated output signals in response to changes in the pressure of a fluid input signal including a position responsive member mounted for operative connection with such fluid input signal for movement to various positions to direct the fluid input signal outwardly as a selective output signal.

Abstract: A specific sensitized matrix for diagnosing both infectious and non-infectious disease is disclosed comprised of an insoluble, inert, pliable and wettable matrix having a network of pores, and a protein polymer network immobilized in the network of pores formed of protein carrier molecules, specific antigens or antibodies, and a coupling agent coupling the protein carrier molecules together and the antigen or antibody to the protein carrier molecules. A variety of matrix materials, protein carrier molecules, specific antigens or antibodies and coupling agents can be used. Methods of preparing the sensitized matrix and diagnostic test procedures utilizing the sensitized matrix for detecting disease are also disclosed.

Abstract: New and improved fluid meters which include a flow-responsive apparatus, either a rotating disk or rotating paddle, moving a driving magnet which causes movement of a driven magnet, driving a gear which causes a register to indicate fluid flow. The magnets are mounted in a fluid-tight adapter unit which is also adapted for use to replace complex gear structure of worn meters.

Abstract: An apparatus for converting thermoplastic waste material into a commercial-grade granular material wherein the waste material is introduced into a chamber containing a rotating cutter which shreds and frictionally heats the thermoplastic material which is thereafter cooled by cooling water added to the material while the cutting operation continues. The cooling water or vapor is then withdrawn or exhausted from the container under negative pressure leaving the granular material dry. Also, solvents are removed from the material. The cutter blade may include baffle bars which provide frictional heating surfaces for heating the thermoplastic waste material.

Abstract: A new and improved low-speed, high-torgue power unit including a power means that is mounted on a drive wheel for rotation in a receptacle holding a body of fluid. The power means includes a propelling means which acts against the fluid body to rotate the drive wheel about a power output shaft on which the drive wheel is mounted. A movable gate means may be provided with the receptable to restrict circular flow of the fluid and increase thrust of the propelling means.

Abstract: A pipe heat transfer assembly adapted to be easily and rapidly installed with unskilled in the field on a pipe to be heated or cooled includes an elongated rigid channel cover member and a separate elongated, preshaped, solid, flexible strip of thermoplastic resin heat transfer material having a first surface preshaped to conform closely to the inner cavity surface of the channel member and a second surface preshaped to conform closely to the shape of the pipe surface on which it is to be mounted. The strip of heat transfer material may be pre-shaped by molding or extruding. An elongated heat transfer element, which may be an electric heating wire or an elongated tube for a heat transfer liquid to flow therethrough, is embedded in the strip during such pre-shaping. Alternatively, a space for reception of the heat transfer element can be formed in the strip during the pre-shaping of the strip and the element subsequently installed in the space.

Abstract: A new and improved process for the recovery of heavy viscous petroleum from a subterranean formation is disclosed. A heated fluid comprising steam and a heated non-condensable gas is injected into the formation through a penetrating well at an initial predetermined injection rate until the injection rate diminishes to a predetermined level. The injection is then discontinued and a heated non-condensable gas is immediately injected into the formation through the well until the injection rate thereof reaches a desired level. The steam-gas mixture and heated non-condensable gas are then alternately injected in sequence until the steam-gas mixture can be injected into the formation continuously at a desired injection rate and the formation and petroleum have been heated to a predetermined extent. The heated, mobile petroleum is then recovered by withdrawal through the well in a conventional manner.

Abstract: A catalyst screening unit having a housing which receives incoming feed catalyst under positive pressure, a screen for sizing and separating whole catalyst from broken catalyst, dust, and fines, a vibrating member to vibrate the housing and the screen therewith, and a lower, waste chamber for collecting broken catalyst and fines to be directed outwardly therefrom the housing, and having vacuum provisions therewith for removing dust separately from the fines, such that the cleaned whole catalyst may be used within a catalytic reactor.

Abstract: Communication by multiplicatively multiplexing two signals, one digital data and the other an analog signal such as voice, for simultaneous transmission over a communication path, such as a telephone line.

Abstract: A synthetic display is provided, in cross-sectional form, of the theoretical strength of seismic reflections. The theoretical strength is computed from calculated inverval-velocity values and known or estimated density values. By comparison of this synthetic reflection-strength display with the observed reflection-strength display, useful conclusions may be drawn about the nature of geological materials and the complex origin of reflections.

Abstract: An in vitro process for detecting the presence of endotoxin in a biological fluid such as a parenteral fluid, whole blood, and the like, wherein amebocyte lysate from the hemolymph of the horseshoe crab, Limulus polyphemus, is intimately contacted with and incubated in the presence of a synthetic plastic polymer capable of adsorbing endotoxin which has previously been contacted with the biological fluid. The presence or absence of a gelation reaction in the amebocyte lysate is then observed. The presence of a gelation reaction determines the presence of endotoxin in the biological fluid.