Patents Examined by T. S. Gron
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Patent number: 4165530Abstract: An articulated arm supporting structure for a lamp is disclosed, in which the combination of three arms with a couple of friction discs and a pull spring is such as to permit the entire arm assembly to be desirably positioned while balancing the entire structure by means of resilient and frictional forces.Type: GrantFiled: July 25, 1978Date of Patent: August 21, 1979Assignee: I Guzzini S.P.A.Inventor: George J. Sowden
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Patent number: 4164011Abstract: A decorative drop ceiling including a panel having a plurality of openings therein disposed between a source of light and an area to be illuminated. A light transmissive lens is disposed in each of the openings. Each lens has a predetermined thickness dimension, which is not dictated by the thickness of the panel. The lower face of each lens is co-planar with the lower surface of the panel. The periphery of the lens is recessed, and fasteners, disposed in the recess, fix the lens in the opening.Type: GrantFiled: November 11, 1977Date of Patent: August 7, 1979Assignee: Westinghouse Electric Corp.Inventor: Edward F. Sherwood
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Patent number: 4163734Abstract: A stable synthetic water based reference liquid for quality control and/or calibration of blood gas measuring equipment, said liquid being enclosed in a gas-tight container and containing HCO.sub.3.sup.- ions, H.sup.+ ions, CO.sub.2 gas, and O.sub.2 gas plus an additional pH buffer system different from the pH buffer system constituted by the HCO.sub.3.sup.- ions and the CO.sub.2 gas, said liquid showing, at a fixed temperature, known pH, pCO.sub.2 and pO.sub.2 values, said liquid additionally containing oxygen reversibly contained in a dispersed non-proteinaceous organic substance which shows higher solubility for oxygen than does water, and, optionally, a coloring component showing maximum or significant absorption at about 500 nm, said organic substance being(a) a water-insoluble organic substance in which O.sub.2 l is soluble to an extent of at least 12% by volume at 1 atmosphere oxygen pressure and 25.degree. C.Type: GrantFiled: January 5, 1978Date of Patent: August 7, 1979Assignee: Radiometer A/SInventors: Soren K. Sorensen, Carl C. Holbek
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Patent number: 4162282Abstract: Uniform particles are produced by introducing a laminar stream of a core liquid into a laminar flowing body of an immiscible sheath liquid. The core liquid or the sheath liquid, or both liquids, can contain one or more materials dispersed (dissolved or suspended) in them from which the uniform particles are formed. The two liquids and the dispersed material are expelled from a nozzle to form a liquid jet. The liquid jet is disturbed at a uniform, periodic rate to form liquid droplets which contain a uniform amount of the core liquid, the sheath liquid and the dispersed material. The droplets are collected and held in a catch liquid until the core and the sheath liquid in each droplet have diffused into the catch liquid leaving the uniform particles formed from the dispersed materials. There can be more than one sheath liquid which can also contain one or more materials dispersed in it.Type: GrantFiled: April 22, 1976Date of Patent: July 24, 1979Assignee: Coulter Electronics, Inc.Inventors: Mack J. Fulwyler, C. William Hatcher
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Patent number: 4160375Abstract: A water washable, wash resistant biodegradable dye penetrant composition is described. It comprises one or more dyes and at least 70% of a substantially linear primary alcohol ethoxylate containing 2 to 4.5 ethoxy groups per molecule.Type: GrantFiled: March 13, 1978Date of Patent: July 10, 1979Assignee: Brent Chemicals International LimitedInventors: Philip I. Brittain, Michael R. J. Lyons
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Patent number: 4160452Abstract: An osmotic therapeutic system for delivering a beneficial drug is disclosed. The system comprises a drug delivery module which module comprises a rate controlling laminated wall surrounding a reservoir and has a portal for delivering drug from the system. The laminated wall comprises a semipermeable lamina in laminar arrangement with a microporous lamina to provide a wall that is permeable to an external fluid, impermeable to drug and maintains its integrity during the delivery of drug. The reservoir contains a drug, or a mixture of drug and solute which drug or solute is soluble in the fluid and exhibits an osmotic pressure gradient across the wall against the fluid.Type: GrantFiled: April 7, 1977Date of Patent: July 10, 1979Assignee: Alza CorporationInventor: Felix Theeuwes
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Patent number: 4157311Abstract: A method of making a mixture of sensing material for a halogen vapor sensor characterized by providing granular activated Alumina (Al.sub.2 O.sub.3) and firing it in a sensitizing material, in the class of alkali metals including carbonates of sodium, lithium, potassium, cesium and rubidium, under controlled temperature conditions for a predetermined time to distribute the sensitizing metal throughout the interstices of the Alumina.Type: GrantFiled: September 1, 1977Date of Patent: June 5, 1979Assignee: General Electric CompanyInventors: Edward D. Orth, William J. Schultz
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Patent number: 4157584Abstract: An overhead lighting fixture with the housing having an open bottom, a resilient hinge pivotally fastening a first side of the light transmitting panel to a first side of the housing adjacent the open bottom of the housing, and a latch assembly for detachably securing a second side of the light transmitting panel to a second side of the housing adjacent its open bottom. The second side of the housing is an elongated extruded side panel member having a light housing web portion and a latch web portion that lies in a plane approximately 90.degree. thereto. The latch member has a J-shaped configuration with a head, a body, and a foot. The head of the latch member has a circular lateral cross-section that is matingly received in a groove formed in the latch web portion. This structure permits the latch member to be pivoted laterally into and out of engagement with a lip extending along the length of the light transmitting panel that rests in the curved hook surface of the J-shaped latch member.Type: GrantFiled: November 21, 1977Date of Patent: June 5, 1979Assignee: Rohr Industries, Inc.Inventor: Yogendra C. Bhatt
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Patent number: 4155872Abstract: Nematic liquid crystal compositions containing at least one primary, secondary or tertiary aliphatic amine salt of aliphatic or aromatic monocarboxylic acids outstanding in the response speed and in the ability to produce a high degree of turbidity, low in the temperature dependence of conductivity (current) and having the long axes of the liquid crystal molecules uniformly oriented perpendicular to electrode base plates when filling the space between the base plates.Type: GrantFiled: December 14, 1977Date of Patent: May 22, 1979Assignee: Sharp CorporationInventors: Minezaki Shigehiro, Funada Fumiaki, Matsuura Masataka
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Patent number: 4153343Abstract: Novel dyes of the formula ##STR1## wherein X is --NH, --NCH.sub.3, --S or --O; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently at each occurrence can be hydrogen, fluoro, chloro, bromo, alkoxy, cyano, nitro, --N(R).sub.2 wherein R is alkyl or two of R.sub.1 to R.sub.4 together can be part of an aromatic ring; R.sub.5 and R.sub.6 are hydrogen, fluoro, chloro, bromo or lower alkyl; and R.sub.7 is hydrogen, fluoro, chloro, bromo, alkoxy, cyano, nitro, --N(R.sub.2), ##STR2## HYDROGEN, FLUORO, CHLORO, BROMO, ALKOXY, CYANO, NITRO, DI-ALKYLAMINO, ##STR3## can be added to known liquid crystal compositions to impart color to the mixtures and to improve contrast of a liquid crystal electro-optic device containing such mixtures.Type: GrantFiled: June 9, 1977Date of Patent: May 8, 1979Assignee: RCA CorporationInventors: Allen Bloom, Ling K. Hung
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Patent number: 4151746Abstract: A composition is disclosed of a cyanoethylated compound, a resinous carrier, and a solvent. The composition is applied to a portion of an electrical apparatus which is exposed to a gas stream. The solvent in the composition is evaporated to produce a thermoparticulating coating. When the electrical apparatus overheats, the cyanoethylated compound in the coating forms particles in the gas stream which are detected by a monitor.Type: GrantFiled: July 2, 1976Date of Patent: May 1, 1979Assignee: Westinghouse Electric Corp.Inventors: Joseph F. Meier, James D. B. Smith, David C. Phillips
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Patent number: 4151748Abstract: A thermally sensitive record medium is disclosed. Data is generated on the record medium in response to an application of heat. The record medium is capable of generating data images in more than one color by exposing the medium to more than one temperature level in areas to be imaged. Overlap or interference between two colors is avoided by utilizing at least one color-forming system which requires a thermal decomposition of one system component before it can be reacted to yield color.The record material is made by coating individual layers, each containing a color-forming system or preferably by coating a single layer including all of the color-forming systems.Type: GrantFiled: December 15, 1977Date of Patent: May 1, 1979Assignee: NCR CorporationInventor: Henry H. Baum
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Patent number: 4151108Abstract: A reference liquid for the calibration and/or quality control of blood gas analyzers. The reference liquid comprises an aqueous phase and either polymer-coated microcapsules containing at least one organic substance functioning as oxygen carrier, or porous particles of a solid substance functioning as oxygen carrier. An example of the polymer-coated microcapsules is nylon-coated microcapsules containing a mixture of perfluorotributyl amine and isooctane. An example of the porous particles of a solid substance is particles of porous silicone rubber.Type: GrantFiled: June 15, 1977Date of Patent: April 24, 1979Assignee: Radiometer A/SInventors: Soren K. Sorensen, Carl C. Holbek
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Patent number: 4150422Abstract: An armored light projector is provided, having a linear light source arranged at the focal axis of a reflector unit capable of projecting a light beam of parallel rays having a substantially rectangular cross-section, the light source being mounted in a rear bottom recess of the reflector unit such as not to be directly visible from the front of the projector. The recess within which the light source is mounted is shielded by an armor assembly against direct impact of a projectile aimed at the front or at the sides of the projector. The projector has shock-absorbing suspension means capable of supporting the linear light source and affording means allowing its connection to a suitable external electric power supply. Means may be provided for protecting the rear and the top of the reflector unit against shocks and or blows, and means may be also provided for improving the cooling of the projector.Type: GrantFiled: October 27, 1977Date of Patent: April 17, 1979Inventors: Enrique B. Peralta, Julio A. Benes
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Patent number: 4149413Abstract: The present invention discloses chiral thermochromic liquid crystal mixtures which do not contain cholesterol or sterol residues.Type: GrantFiled: August 3, 1977Date of Patent: April 17, 1979Assignee: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Norther IrelandInventors: George W. Gray, Damien G. McDonnell
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Patent number: 4149599Abstract: Fire-fighting foam effecting against burning hydrophilic or polar liquids like lower alcohols, ketones, etc. is made from concentrate containing thixotropic thickener dissolved in large amount, yet has a tolerable viscosity particularly when stirred. Heteropolysaccharide-7 or chain-shortened modifications of it are suitable for this purpose. The concentrate can also be made suitable for fighting fires on hydrophobic liquids by adding surfactants that cause aqueous film formation over such liquids.Type: GrantFiled: June 21, 1977Date of Patent: April 17, 1979Assignee: Philadelphia Suburban CorporationInventor: Peter J. Chiesa, Jr.
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Patent number: 4147651Abstract: Nematic liquid crystal compositions containing 4'-substituted-4-cyanobiphenyl and 4, 4'-disubstituted phenyl benzoate liquid crystal compositions which can be actuated at low voltages, e.g., under 3.5 Vrms in a 12.5 micron thick twisted nematic liquid crystal display.Type: GrantFiled: September 3, 1974Date of Patent: April 3, 1979Assignee: Beckman Instruments, Inc.Inventor: Chan S. Oh
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Patent number: 4147656Abstract: Liquid crystal mixtures are disclosed which contain 30-60% of a Schiff's base nematic liquid crystal compound, 25-65% of a second nematic liquid crystal compound selected from the classes of azoxy, ester and biphenyl, and 5-15% of a triphenyl compound to raise the isotropic transition temperature. This combination results in liquid crystal compositions having unexpectedly wide nematic temperature ranges.Type: GrantFiled: April 27, 1978Date of Patent: April 3, 1979Assignee: Itek CorporationInventors: Ralph E. Aldrich, William J. Cumming, William A. Simmons, Jr.
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Patent number: 4147655Abstract: Novel mesomorphic substances, constituting, in certain temperature ranges, nematic or smectic liquid crystals, are compounds of the formula ##STR1## wherein Y is H or CN;R is alkyl or alkoxy of 1 to 10 carbon atoms;R' is alkyl of 1 to 10 carbon atoms or ##STR2## and X is Br, Cl or CN.Type: GrantFiled: January 9, 1978Date of Patent: April 3, 1979Assignee: Thomson-CSFInventors: Jean-Claude Dubois, Huu T. Nguyen, Annie Zann
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Patent number: 4145114Abstract: A dye compound suitable for use in solution with a liquid crystal material is characterized by one of the following formulae: ##STR1## (III) a derivative of (I) or (II) containing one or more simple lateral substituents or bridging groups on the benzene rings: ##STR2## where n.sub.1, n.sub.2, n.sub.3 are integers in the range 0 to 4, A is azo or azoxy, X is cyano, or nitro and Y.sub.1 and Y.sub.2 are one of the following: hydrogen, alkoxy, arylalkoxy or N.sub.R.sbsb.2.sup.R.sbsp.1 where R.sub.1 and R.sub.2 are alkyl, substituted alkyl or alkylene groups.Type: GrantFiled: June 14, 1976Date of Patent: March 20, 1979Assignee: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern IrelandInventors: David Coates, George W. Gray, Damien G. McDonnell