Abstract: A zirconia oxygen sensor for measuring oxygen potential in the molten bath of a metal or alloy having a melting point of 350-550.degree. C., which comprises a reference electrode which is of a substance having a melting point of the same level as or lower than the metal or alloy of which the oxygen potential is to be measured and being liquid at the measurement temperature and is open to the atmosphere, a vessel of a zirconia solid electrolyte containing 5-10% yttria or 10-20% of calcium oxide (CaO) and a lead wire which connects the reference electrode and said molten metal or alloy and its use are disclosed.
Abstract: The present invention relates to a stable solution of sodium hypochlorite which is useful as an antiseptic. The solution contains sodium hypochlorite in a quantity sufficient for 4 to 6 grams per liter of active chlorine, a pH regulator in a quantity sufficient to yield a pH greater than 10 and less than or equal to 10.5 and purified water in a quantity sufficient to yield 1 liter of solution.
July 23, 1991
Date of Patent:
December 28, 1993
Cooperation Pharmaceutique Francaise
Jean Deroux, Mael Le Rat, Jean-Paul Compagnon
Abstract: A unitary diaphragm assembly for use in conventional flush valves. The diaphragm assembly has a flexible diaphragm which includes a seating portion and a mounting portion at the outer peripheral edge. A flow ring is positioned adjacent to the seating portion of the diaphragm. An elongated barrel member extends from the diaphragm in a longitudinal direction and includes a plurality of radial guides positioned circumferentially around the outer surface of the barrel member along a portion of the length of the barrel member. A second embodiment has a flexible diaphragm connected to a cylinder slide. The cylinder slide includes a longitudinal barrel member with a relief valve positioned in the interior of the lower portion of the barrel member.
May 14, 1993
Date of Patent:
December 21, 1993
Zurn Industries, Inc.
Robert E. Saadi, Christopher C. Knoll, John Beaumont, John D. Ralston, Robert E. Farrell
Abstract: The invention provides an aquaculture complex for high protein crop production of a duckweed clone suitable for human consumption comprising a body of water in combination with duckweed clones, the majority of said clones being characterized by having less than three roots per clone, said roots being less than 15 mm in length and having at least two attached fronds, at least one of said fronds being characterised by a frond thickness greater than 1 mm and a frond length greater than 4 mm.
Abstract: An encapsulated food product for any type of animal has a readily removable non-food capsule surrounding an edible core. An interface between the capsule and core facilitates separation of the capsule and edible core. The capsule is fabricated to facilitate separation from the interface and core as two or more pieces. The invention encompasses simulated seeds and simulated nuts for the animal food industry and snacks for primates including humans.
Abstract: A method for replacing airfoil components includes the steps of identifying a portion of the airfoil to be replaced, removing the portion by a nonconventional machining process, such as continuous wire electrical discharge machining, and forming a replacement member utilizing a similar cutting process. A cutting path utilized to remove the portion to be replaced and to form the replacement member includes interlocking projections and sockets and may include one or more tapers along the cutting path so that the portion may be removed only by lifting in one direction. In cases where an entire airfoil is replaced, a first projection may be tapered in one direction while a second projection is tapered in an opposite direction so that the airfoil may not be removed as long as its adjacent flowpath walls are fixed relative to one another.
Abstract: A hot strip mill including an improved coiler furnace adapted to minimize heat losses and exposure of the roller table to extreme working conditions. The coiler furnace includes a mandrel which is mounted within a housing. An access opening is provided in the housing for allow for entry and exit of the stripper material being worked upon. A pivotable diverter is mounted on a pivot pin adjacent this opening and is shiftable between a closed position which substantially seals the housing closing of the access opening and an open position which extends into the pass line of the roller table of the hot strip mill to divert the strip being worked upon into the coiler furnace.
Abstract: An X-ray detector used in an energy-dispersive X-ray spectrometer The detector comprises a cooling vessel containing liquid nitrogen and a protective container enclosing the cooling vessel. The space between the cooling vessel and the protective container is hermetically partitioned into a dewar tank portion and a nose portion by a partition wall. An X-ray detector device is accommodated in the nose portion. If the liquid nitrogen inside the cooling vessel evaporates, the produced gas stays only inside the dewar tank portion and does not enter the nose portion.
Abstract: An improved cap for underdrains in gravity filters has a top surface and a bottom surface with a plurality of tapered screen members defining slots in the top surface. The slots provide communication with the filter bed without passage of fine grain filter media therethrough. The screen members are inclined with respect to horizontal to define a plurality of raised portions in the top surface, each raised portion defining a distribution chamber above the orifices in the distributor. The cap may be included in a capped filter underdrain block having a plurality of ribs and orifices on a top wall of the block. The cap rests on the ribs and cooperates with them to define distribution chambers above the orifices in the top wall of the block. The distribution chambers promote intermixing of air and water prior to introduction to the bed, and the ribs finely meter backwash fluids for even distribution of backwash fluids throughout the entire filter bed.
Abstract: A positioning device for positioning the lower extremity to aid in CAT scan diagnostics is disclosed with the purpose being to lock the hip joint in degrees of external or internal rotation. The positioning device includes a base board with an upright plate rigidly attached to the board and a boot for receiving the lower extremity with locking means to lock the boot to the plate and base board at various orientations.
March 25, 1992
Date of Patent:
December 7, 1993
Manuel De La Torre, Thomas Kent Donaldson
Manuel De La Torre, Thomas K. Donaldson
Abstract: A non-invasive female urine collection device includes an elongated pad adapted to be positioned comfortably between the legs of a female patient and against the patient's perineal area. The pad includes a flat, planar base having an outlet extending between an inner surface and an outer surface thereof. A flexible membrane is positioned above the inner surface of the base and has an outer circumferential edge attached to the base, preferably along an outer edge of the base. The flexible membrane has an inner circumferential edge which defines an open area therein, with the inner circumferential edge of the flexible membrane surrounding the outlet, preferably immediately adjacent the outlet, and attached to the inner surface of the base. The inner circumferential edge and outer circumferential edge of the flexible membrane are spaced apart from each other that a chamber is formed between the flexible membrane and the base.
Abstract: A double-sided adhesive-coated foam tape particularly for bonding two adjacent rigid surfaces in which fine grooves on one or both sides of the tape facilitate air venting to minimize non-contact areas. The tape is used by affixing one side of the tape--the non-grooved side if only one side of the tape is grooved--to a first rigid surface to be adhered, removing the release liner from the grooved tape surface and pressing onto the grooved tape the second rigid surface intended for bonding. The grooves in the tape are fine enough that, once the two surfaces to be bonded are in position, the grooves largely or completely disappear.
Abstract: A protecting cover for coaxial connectors includes a pair of half T-shaped casing members which are pivotally connected together by a linking portion for receiving a T-type coaxial connector assembly. The protecting cover has a pair of plugs and sockets respectively formed in lateral portions of each casing member in one side just opposite to the linking portion for engaging the two casing members together to enclose the coaxial connector assembly therein. A hook is formed on the surface of one of the casing members to hang the protecting cover in an appropriate place.
Abstract: A carriage running control system includes a plurality of readable and writable memory media installed along a running track of carriages. Each carriage is capable of communicating information with the memory media. The running track includes special zones such as curved sections, branching sections, merging sections, and sections including stations. When a preceding carriage is present in one of such special zones, the memory medium disposed at the entry end of this zone supplies presence information to a succeeding carriage to prevent the latter from entering the zone. A detector is disposed at the exit end of each such zone for detecting departure of the carriages and resetting the memory medium at the entry end.
Abstract: Disclosed is a photochromic composition comprising an organic photochromic compound and a specific tertiary amine compound which are dissolved or dispersed in a high-molecular compound. Also disclosed are a photochromic film composed of the above photochromic composition and a photochromic laminate having a photochromic layer composed of the above photochromic composition on a surface of a substrate.
Abstract: An electron microscope capable of performing accurate x-ray analysis is provided. An objective lens having a bottom polepiece from which unwanted x-rays are not produced is attached to the electron microscope. An EDS (energy-dispersive x-ray spectrometer) detector is also attached to the electron microscope to make an x-ray analysis. A film consisting of a light element such as beryllium is coated on the top surface and the tapering portion of the bottom polepiece to prevent the electron beam transmitted through the sample or the secondary electrons and the scattered electrons emanating from the sample from colliding against the surface of the bottom polepiece; otherwise x-rays characteristic of Fe and Co would be generated.
Abstract: An electron beam instrument typified by a scanning electron microscope. The instrument does not suffer from defocus if the accelerating voltage is varied. The instrument has an objective lens, an electron gun emitting an electron beam, a control unit, an accelerating voltage-setting portion, first and second reference voltage sources. The control unit digitizes the accelerating voltage set by the accelerating voltage-setting portion and applies the digital voltage to the two reference voltage sources. The first voltage source consists of a first ROM and a first D/A converter. Similarly, the second voltage source consists of a second ROM and a second D/A converter. A signal V.sub.ref1 indicating the optimum objective lens current at a first working distance is stored in the first ROM. A signal .DELTA.V indicating the difference between the optimum objective lens current at a second working distance and the optimum objective lens current at the first working distance is stored in the second ROM.
Abstract: A two-piece, mechanically connected mandrel assembly in which a locking wedge assembly serves to secure a tapered socket connection. The wedge assembly includes two long wedge segments, two short wedge segments, a bolt connecting the short wedge segments and a locking device to fix the bolt after proper torquing to secure the assembly. The two-piece, mechanically connected mandrel assembly is useful in the rolling or drawing of steel tubing or other metal constructs, and the four-piece locking wedge assembly both provides a secure connection and permits ready replacement of a worn work bar with a new work bar.
Abstract: A specimen-driving apparatus used with an electron microscope. The apparatus can translate or tilt the specimen holder while preventing it from being damaged if a human operator performs any erroneous operation. The device has X, Y, Z translation directive devices, and a tilt directive device for permitting the operator to enter instructions for translating and tilting the specimen holder. A contact detector senses that the holder is in contact with the upper magnetic pole piece. A tilt condition decision portion determines whether the holder has tilted into the positive or negative domain. A Z domain decision portion determines whether the Z coordinate of the holder lies in the positive or negative domain. When the contact of the holder with the pole piece is detected, reverse movement of the holder along the Z-axis is inhibited. Also, reverse tilting movement of the holder is inhibited. When the holder comes out of contact with the pole piece, these reverse movements are permitted.