Abstract: An extraction valve head for a tank for high-purity and/or toxic liquid chemicals has an inlet valve for a filler gas, an outlet valve and a purging valve, which closes a bypass between a gas inlet line and an extraction line. The valves are configured as metal diaphragm valves and are fitted in a common metallic valve housing block. All valve seals of the valves are arranged in close spatial proximity to one another in the valve housing block.

Abstract: To produce a gas mixture by the saturation method, liquid is fed from a stock vessel to a separate reaction vessel. A carrier gas enters through a dip tube into the liquid present in the reaction vessel and is saturated by the liquid. The reaction vessel consists, for example, of quartz and is disposed in a metal block connected to a temperature control system. A level sensor fitted to the reaction vessel controls a flow regulation instrument on the liquid feed. The volume of the reaction vessel is substantially smaller than the volume of the stock vessel. Only the temperature of the reaction vessel is controlled. Temperature control of the stock vessel is not required. The saturation process in the reaction vessel takes place uniformly, independently of the temperature and the level in the stock vessel.

Abstract: A sliding valve for withdrawing liquid or gaseous chemical products from a container has a cylindrical valve spool which slides axially in a bore through a valve housing. A first annular groove of the valve spool connects, in the open position of the valve, a product supply line to a product withdrawal line. On one side of this first annular groove there is a second annular groove which, in the open position, connects a gas supply line to a gas withdrawal line. An annular groove on the other side is connected to the second annular groove. By this arrangement, protective gas is admitted to the valve spaces on either side of the first annular groove, which handles the product, with the result that escape of the product to the outside, or penetration of impurities, are positively prevented.

Abstract: The present invention provides a transport container for very pure liquid chemicals having an inner container or flask made of synthetic resin with an upper sealing flange, the inner container being in an outer container, which has a protective collar, provided with openings, surrounding the sealing flange at a distance. The inner container 1 is made of two skins, the inner skin being made of an inert fluoro-synthetic resin and the outer sheet 10 being made of glass-fiber-reinforced synthetic resin completely enclosing the inner skin. The outer skin 10 is in one piece with a cylindrical mantle 11, the upper section of which forms the protective collar 14.

Abstract: A container intended for transporting and discharging aggressive liquids, such as silicon tetrachloride, is closed with a container lid which carries a valve head. The inner surfaces of the container and of the container lid are lined with fluorinated hydrocarbon. The valve head has a valve block which, in valve block drilled holes accommodates valve inserts and is enclosed by a steel jacket which is bolted to the container lid. All the parts which come into contact with the aggressive liquid consist of fluorinated hydrocarbon, so that contact between the aggressive liquid and metal is avoided.

Abstract: A protein which can be an enzyme is immobilized by: (a) admixing the protein and an isocyanate-capped liquid polyurethane prepolymer in the absence of water to form a resulting mixture (an intermediate product); and (b) forming the intermediate product by reacting it with water to form a polyurethane foam comprising the immobilized enzyme. When certain proteins in sufficient amount are mixed with the prepolymer in the absence of water the resultant protein prepolymer mixture will solidify to produce a solid non-foamed product containing a protein immobilized therein. Initially mixing the protein and prepolymer in the absence of water results in immobilization of a substantially greater amount of protein than when water is present.

Abstract: An aqueous dispersion of a biologically-active protein bound to polyurethane is formed by (a) admixing the protein and an isocyanate-capped liquid polyurethane prepolymer to form a solution; and (b) dispersing the solution in water.

Abstract: A wear liner is provided for the roof of the pedestal jaw of a side frame. The liner is welded in place only along the lateral edges of the liner and is retained in place, in the event of weld failure, by depending legs engageable with pedestal jaw stop lugs. Additional retaining lugs may be provided in the pedestal jaw roof.

Abstract: An upholstery fabric, suitable for providing the sole body-supporting surface in a seat construction with a lightweight, for example tubular, frame, comprises a rigid, knitted base fabric and, interengaged therewith, a fabric surface formed from textile yarns having flame retardant properties. The fabric is preferably warp knitted and the base fabric has a rigid net structure. A decorative surface yarn is preferably interlaced at every course with the base fabric.

Abstract: An electroluminescent display device includes at least two elongated, conductive contacts substantially adjacent to and spaced from each other with at least two substantially coextensive ends. A light-emitting element is electrically coupled between the coextensive ends. An elongated insulating base is formed about and between the contacts with their elongated outer edges extending beyond the elongated sides of the base. The base extends substantially the entire length of the outer edges of the contacts and is substantially integral between such contacts.The device is fabricated in a lead frame environment, wherein the light-emitting element is bonded to a lead frame. A lens is formed over the light-emitting element. The contacts for the device, which may be slidably engageable, are formed from the lead frame. The base is formed contiguous to the lens and over the lead frame to embed the contacts within the base with edges of the contacts extending laterally beyond the surface of the base.

Abstract: A retractable ramp is described for loading heavy objects into a vehicle, for example, for lifting a stretcher and patient up onto the floor of a modular ambulance, or rescue vehicle body. The ramp, which is stored on guides below the floor when not in use, comprises a retractable lower frame to which a ramp incline is hinged at its exterior end. The incline includes a pair of spaced, parallel, U-shaped channels. When in use, the lower frame is retracted, the incline is raised and secured to the floor and then the wheels of a stretcher are placed in the channels so that the stretcher (and patient) can be rolled up onto the floor by pushing the stretcher up the incline rather than by lifting.

Abstract: A telecommunications terminal apparatus, connected to a transmission facility which includes a source of energizing current and an earth connection, is protected from static discharge of the type typically originating with a user. The terminal apparatus includes an ABS housing with one or more apertures therein to facilitate user actuation of various control buttons or keys. The periphery of each aperture is rendered electrically conductive. A low impedance sink such as a remote power supply, earth or a transmission line is connected to the electrically conductive periphery via a variable impedance element, for example a pair of back to back zener diodes. The housing also includes a conductive foot for contact with a supporting surface. The conductive foot is also connected with the conductive periphery of the aperture.

Abstract: A gas dilution device includes a nozzle in fluid communication with selected first and second orifices disposed to direct a selected plurality of streams of a first gas at a plurality of velocities into a gas dilution chamber which is in fluid communication with a settable second gas receiving port through which an ambient second gas is drawn by the streams into the dilution chamber for diluting the first gas in a predetermined range of dilution ratios.

Abstract: A wear liner is provided for the roof of the pedestal jaw of a side frame. The liner is welded in place only along the lateral edges of the liner and is retained in place, in the event of weld failure, by depending legs engageable with pedestal jaw stop lugs. Additional retaining lugs may be provided in the pedestal jaw roof.

Abstract: A viscometer system for providing an indication of the viscosity of a fluid and operable on the falling slug principle and providing a means for providing an output indicative of viscosity as a function of elapsed time.

Abstract: Described is a mechanical lift for lifting (or lowering) an object to (or from) an elevated storage compartment. The lift comprises a carriage in which the object, for example an oxygen tank, is secured. Rigid bars are pivotally mounted to an upper portion of the carriage and to a lower portion (e.g., floor) of the compartment. Preferably, the bars are mounted on opposite sides of the carriage. A telescoping rod is pivotally connected to the upper portion of the carriage and to an upper portion (e.g., ceiling) of the compartment. Spring means, which extends between substantially the same points as the telescoping rod, counterbalance the weight of the object when it is being lowered out of or lifted into the compartment.

Abstract: An improved surface traversing apparatus is provided in which one anchor or group of anchors is connected with one base, another anchor or group of anchors is connected with another base, each anchor group is movable en bloc transversely of its respective base for lateral movement across the surface of a member to be traversed, and the two bases are movable relative to one another in a direction which moves one finger group alternately toward and away from engagement with a member engaged by the other finger group. The anchors may be selectively expandable fingers which are longitudinally insertable into and retractable from openings in a steam generator tube sheet to provide the engagement therewith.

Abstract: Disclosed is a method and apparatus for applying fluid to an intaglio roll for subsequent transfer to a soft, absorbent fibrous web passing in contact with the intaglio roll. The fluid is flowed upwardly through a small unpressurized reservoir extending across the width of the intaglio roll, which forms a confining member of the reservoir, and overflows a second confining member of the reservoir spaced from the intaglio roll. The fluid is flowed into the reservoir with uniform flow velocity profile across the width of the reservoir, created preferably by flowing the fluid against an impingement member prior to entering the reservoir. The intaglio roll is rotated upwardly through the reservoir to establish a first layer of fluid adhering to the roll above the reservoir, and the intaglio roll is rotated past a unique pre-wipe member positioned adjacent the intaglio roll above the reservoir.

Abstract: An axial lead component dispensing apparatus having a simultaneously adjustable pair of guide plates, advancing mechanism and lead severing mechanism mounted on a support. Two racks and a pinion actuate and synchronize the simultaneous lateral adjustment of the guide plates.

Abstract: An improved, cathode ray tube mask assembly having a dark, adherent coating and a method of forming such a coating. A clean mask assembly is treated with a hot solution of chromic and phosphoric acid to form a preliminary protective coating. The mask assembly is then baked to convert the preliminary protective coating to a final dark, very adherent coating.