Patents Represented by Law Firm Sigalos, Levine & Montgomery
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Patent number: 4847222Abstract: A basic refractory shape resulting from firing a batch consisting essentially of a magnesite and a zirconia; said batch containing for each 100 percent by weight thereof about 3 to 20 percent by weight of coarse zirconia having a particle size of 150-mesh Tyler, or greater, and 0 to 20 percent by weight of fine zirconia having a particle size of finer than 150-mesh Tyler and a slide gate assembly comprising at least one such shape.Type: GrantFiled: May 4, 1987Date of Patent: July 11, 1989Assignee: Dresser Industries, Inc.Inventors: Richard J. Knauss, David J. Michael
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Patent number: 4838132Abstract: An adjustable wrench comprising a handle, a stationary outer jaw member integrally formed with the handle and having at least one outer face and a support surface for a moveable jaw, and a moveable jaw member riding on the support surface and continuously supported thereby during its entire range of movement, the moveable jaw member having an inner face parallel to the stationary outer face whereby the turning of a nut placed between the stationary outer face and the moveable inner face creates a force a part of which is applied to the moveable jaw member in a direction perpendicular to the direction of travel of the moveable jaw member thereby forcing the moveable jaw member against the support surface.Type: GrantFiled: September 10, 1987Date of Patent: June 13, 1989Assignee: Donald PylesInventor: Donald Pyles
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Patent number: 4835236Abstract: The present invention comprises a vinyl chloride copolymer consisting essentially of the copolymerization reaction product of a vinyl chloride monomer composition and at least one polyfunctional compound; said polyfunctional compound being an alkadiene of the formula:CH.sub.2 .dbd.CH--(CH.sub.2).sub.x --CH.dbd.CH.sub.2in which x is a whole number from 1 to 25; said copolymer containing, in moles, from 99 to 99.99% of said monomer composition based on vinyl chloride and correspondingly from 0.01 to 1% of said polyfunctional compound and the process of making such copolymer.Type: GrantFiled: January 9, 1987Date of Patent: May 30, 1989Assignee: AtochemInventors: Jacques Grossoleil, Patrick Kappler, Nicolas Krantz
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Patent number: 4834080Abstract: An improved drill bit guide which enables a prosthesis fixture to be attached to the femoral cortex of a resected femur with the use of drill bits or fixation pins passing through the fixture and through the femoral cortex more quickly and accurately than has been possible previously.Type: GrantFiled: September 11, 1987Date of Patent: May 30, 1989Inventor: Byron L. Brown
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Patent number: 4833180Abstract: A process for preparing vinyl chloride homopolymer or copolymer latexes, comprising carrying out the polymerization of a monomer composition in a reaction medium in emulsion or in microsuspension and continuously condensing a vapor fraction of said monomer composition and continuously refluxing said condensed vapor fraction into said reaction medium, degassing the resultant polymer, and carrying out the polymerization under agitation by means of a paddle agitator with a rotating shaft having at least one paddle and at least one deflector with the speed gredient between said at least one paddle and said at least one deflector being between 5 and 50 s.sup.-1 ; the peripheral rotational speed of the agitator is maintained in the range of about 1.1 to 2.1 meters/second for about 50% to 100% of the duration of the polymerization period preceding the beginning of reflux (P.sub.1) and the period which separates the end of reflux from the beginning of degassing (P.sub.3), and at a speed in the range of about 0.Type: GrantFiled: June 24, 1987Date of Patent: May 23, 1989Assignee: AtochemInventor: Daniel Brulet
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Patent number: 4833109Abstract: A refractory mix for forming low thermal conductivity refractory shapes comprising about 50 to 90% by weight of magnesite, about 10 to 50% by weight spinel or about 7 to 35% by weight of an alumina-bearing material, and about 1 to 10% by weight of a nonsiliceous void-forming material.Type: GrantFiled: January 15, 1988Date of Patent: May 23, 1989Assignee: Dressers Industries, Inc.Inventors: Christopher L. Macey, Richard J. Knauss
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Patent number: 4831061Abstract: A polyamide powder consisting essentially of elementary porous particles having a "gypsum rose" structure and a process for preparing a polyamide powder comprising polymerizing by anionic polymerization lactam in a solvent medium in the presence of a catalyst, an activator, and at least one amide; one of which is N,N'-alkylene bisamide; said polymerization being initiated with said lactam and said amide used in an amount such that the solvent is in the supersaturated state at the polymerization initiation temperature.Type: GrantFiled: July 11, 1988Date of Patent: May 16, 1989Assignee: AtochemInventors: Jean-Claude Hilaire, Roland Guerin
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Patent number: 4828620Abstract: A method for calcination of a calcium carbonate material comprising heating the calcium carbonate material to a temperature and for a time sufficient to calcine the material to the degree desired while in the presence of a catalyst; said catalyst comprising at least one fused salt having the formulaMCO.sub.3.CaCO.sub.3.CaO.H.sub.2 O.sub.x,wherein M is an alkali metal and x is 0 to 1 and formed by fusing MCO.sub.3 and CaCO.sub.3 in a molar ratio of about 1:2 to 2:1, and a blend adapted to be heated to CaO comprising a calcium carbonate material and at least one such fused salt.Type: GrantFiled: August 27, 1987Date of Patent: May 9, 1989Assignee: Southwest Research InstituteInventors: William A. Mallow, Jerome J. Dziuk, Jr.
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Patent number: 4829560Abstract: A communications system for use in a coaxial cable data transmission system such as in a hotel/motel system between a central processor and a room and the room and appliances within the room wherein frequency shift key modulation of a high frequency signal is used for communication between the central processor and the rooms and amplitude shift key modulation of a low frequency signal is utilized for communication within the room between the in-room controller and appliances within the room. In addition, the system also utilizes a serial interface input/output card in the central processor which detects the quality of the signal coming from each room in regard to frequency, signal level and deviation and stores those signals for maintenance purposes. Also, the system provides for long distance interrogation of the central processor over telephone lines so that the hotel/motel operating system may be reviewed from a remote distance.Type: GrantFiled: January 30, 1987Date of Patent: May 9, 1989Assignee: SpectradyneInventors: Walter R. Evanyk, Michael H. Beber, Joel R. Donaldson, J.Orville Larsen, David G. Adams, Michael W. Douglas
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Patent number: 4826623Abstract: A stable homogeneous composition in the form of a microemulsion suitable for making rigid foams comprising a halogenated polyhydroxylated compound, a halogenated alkane, and a surfactant in an amount sufficient to maintain a stable microemulsion.Type: GrantFiled: August 1, 1985Date of Patent: May 2, 1989Assignee: AtochemInventors: Evelyne Bonnet, Francois Tilquin
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Patent number: 4824263Abstract: An improved thrust bearing shoe and method for making same is provided. The bearing shoe includes a surface having an optimum one-dimensional curved profile maximized as to load carrying capacity in accordance with predetermined relationships for the dimensions of the shoe. The curved profile may be cycloidal, truncated cycloidal, cubic or quadratic in shape depending on the dimensions of the shoe.Type: GrantFiled: October 30, 1985Date of Patent: April 25, 1989Assignee: Dresser Industries, Inc.Inventor: Anant P. Singh
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Patent number: 4813749Abstract: A piloted rotary two-way "on-off" valve which will couple hydraulic fluid from the valve input to the valve output in the "on" position and then move to the "off" position where it will maintain the pressure on the down stream side while enabling the pressure on the upstream side to be removed.Type: GrantFiled: December 24, 1987Date of Patent: March 21, 1989Assignee: Dresser Industries, Inc.Inventor: Arthur L. Cilles
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Patent number: 4813231Abstract: A diesel particulate trap formed from silicon carbide cermet foam with associated hardware to retain the foam in a particular configuration. Several pieces of the foam, in the shape of "doughnuts", are stacked on top of each other. The stack of foam doughnuts is assembled in a container designed to allow diesel exhaust to flow radially inward through the doughnuts and exit through the center. Ceramic felt gaskets are interposed between the doughnuts and between each of the end doughnuts and steel end plates. These gaskets serve as buffers and allow for different thermal expansion properties of the steel and silicon carbide cermet foam. The silicon carbide is conducting and has resistance and when current is passed through the foam doughnuts, they become hot enough to burn the collected particulate.Type: GrantFiled: October 7, 1987Date of Patent: March 21, 1989Assignee: Southwest Research InstituteInventor: Bruce B. Bykowski
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Patent number: 4813000Abstract: Method and apparatus for matching a selected color with predetermined available paint colors wherein a portable color meter is used to analyze a selected color and store chromaticity data representing the hue, chroma and brightness of the selected color. That stored chromaticity data is coupled to a computer which compares it with stored chromaticity data in the computer representing available color formulas and then selects one of the stored paint formulas most closely matching the chromaticity data representing the selected color.Type: GrantFiled: July 9, 1986Date of Patent: March 14, 1989Assignee: Jones-Blair CompanyInventors: Larry D. Wyman, Joseph D. Webb
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Patent number: 4812274Abstract: An extruded thermoplastic polymer conduit having a conduit wall of substantially uniform crystalline morphology through the entire thickness thereof free of any oriented surface zone is formed by heating to melt the surface zone and cooling to recrystallize the surface zone.Type: GrantFiled: April 3, 1987Date of Patent: March 14, 1989Assignee: AtochemInventors: Jean-Jacques Labaig, Michel Fenie, Michel Glotin
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Patent number: 4812206Abstract: A process for bleaching a lignocellulosic matter in the form of a mechanical, thermomechanical, chemicomechanical or chemicothermomechanical papermaking pulp, or of wood chips while being converted into one of these pulp types by processing in a machine consisting essentially of two interpenetrating spiral surfaces wound around parallel shafts driven in synchronous rotation in the same direction inside a barrel which encloses them, and determining between upstream and downstream in the direction of forward travel of the matter a series of zones for drawing and braking the matter, which comprises combining a bleaching treatment using a reducing agent and a bleaching treatment using an oxidizing agent, characterized in that, after pretreatment using at least one metal-complexing or sequestering agent, the lignocellulosic matter undergoes a washing operation with an efficiency greater than 96% before undergoing in succession a bleaching treatment using a reducing agent at a pH of between about 8 and 12, a washinType: GrantFiled: September 22, 1987Date of Patent: March 14, 1989Assignee: AtochemInventors: Michel Devic, Robert Angelier
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Patent number: 4811791Abstract: A method of recovering a petroleum from an underground source thereof comprising injecting into said underground source a petroleum displacement agent comprising a fluid and a modified liposome, said liposome being present in an amount sufficient to lower the interfacial tension between said fluid and said petroleum to below about 10 millidynes and the displacement agent.Type: GrantFiled: August 4, 1987Date of Patent: March 14, 1989Inventors: Gideon N. Harnoy, Shimon Gatt, Yechezkel Barenholtz
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Patent number: 4810408Abstract: Bleaching of laundry using a peroxidized compound is carried out at a temperature of less than 70.degree. C. for less than 30 minutes in a bath which has a pH of 10.5 to 12.5 in the presence of 1.times.10.sup.-3 to 1.times.10.sup.-2 gram-atom of calcium or of barium per liter of bath and of a sequestrant for alkaline earth metal ions in a quantity equal or superior to that which corresponds to the sequestration of calcium or barium ions in solution in the bath; the calcium or the barium being introduced in the form of the oxide CaO or BaO; the hydroxide Ca(OH).sub.2 or Ba(OH).sub.2 ; or of a salt, the anion of which is inert towards hydrogen peroxide and which is accompanied by a quantity of sodium hydroxide equal to that required for the formation of calcium hydroxide or barium hydroxide.Type: GrantFiled: May 12, 1987Date of Patent: March 7, 1989Assignee: AtochemInventors: Bernard Dubreux, Francoise Chosson
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Patent number: 4810415Abstract: High purity silica powder formed from a sol-gel process is made from a quantity of an industrial grade hydrolizable silicon organometallic substance mixed with a quantity of an industrial grade organic solvent miscible in said organometallic substance and with a quantity of an acidified water having a pH less than 2 to form a solution. The solution is heated, then dried to form a gel, milled, and calcined to form the pure silica powder and the pure powder used to form encapsulated micro-miniature circuits.Type: GrantFiled: September 10, 1986Date of Patent: March 7, 1989Assignee: Dresser Industries, Inc.Inventors: Howard M. Winkelbauer, Glenn A. Moore
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Patent number: D300463Type: GrantFiled: June 30, 1986Date of Patent: March 28, 1989Assignee: Murex CorporationInventors: Edward M. Nemec, Miles G. Hossom, David L. Marshall