Patents Represented by Attorney Scanlon
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Patent number: 5801873Abstract: The present invention provides variable reflectance automobile mirrors wherein the component of variable transmittance is an electrochromic device wherein the medium of variable transmittance comprises an electrochromic compound in a gel or a thickened solution.Type: GrantFiled: December 30, 1993Date of Patent: September 1, 1998Assignee: Gentex CorporationInventor: Harlan J. Byker
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Patent number: 5800624Abstract: Plasticized liquid membranes and processes for separating monosaccharides from disaccharides and from other monosaccharides employing the membranes are provided. Fructose is separated from glucose via the membrane process to provide fructose in concentrations sufficient for HFS (high fructose syrup) and sucrose, glucose and fructose are separated from crude sources such as molasses, sugar cane juice and beet sugar juice. The plasticized membranes are prepared by dissolving a lipophilic polymer such as cellulose triacetate, an organic liquid plasticizer such as a hydrophobic ether compound e.g. 2-nitrophenyloctyl ether and, a carrier compound such as a quaternary ammonium salt or a boronic acid compound with lipophilic substitution in a suitable solvent which upon evaporation provides the plasticized membrane. The membrane produced is homogeneous having all three components equally dispersed in the membrane.Type: GrantFiled: October 22, 1996Date of Patent: September 1, 1998Assignee: University of Notre DameInventors: Bradley D. Smith, Jennifer A. Riggs
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Patent number: 5797726Abstract: A turbulator configuration is formed on an inner surface of one or more walls defining a cooling passage in a rotor blade of a gas turbine engine, where the cooling passage has a centerline extending therethrough. The turbulator configuration includes a plurality of spaced turbulator pairs oriented with respect to the centerline so that the direction of a boundary layer flow of the coolant adjacent the cooling passage inner surface is consistent with a pair of counter-rotating flow circulations created by Coriolis forces on the coolant flowing into and through the cooling passage when the rotor blade is rotated, whereby heat transfer between the coolant and the wall is enhanced. The turbulator pairs are angled either toward or away from the centerline for leading and trailing walls of the cooling passage depending upon whether the coolant is flowing either radially outward or radially inward.Type: GrantFiled: January 3, 1997Date of Patent: August 25, 1998Assignee: General Electric CompanyInventor: Ching-Pang Lee
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Patent number: 5797723Abstract: A turbine seal includes a first arcuate segment defining a flowpath boundary between combustion gases and air, and includes a radially outwardly extending rail at one end thereof. A second arcuate segment is disposed coaxially with the first segment for defining a continuation of the flowpath boundary, and has a radially extending face adjoining the rail. A leaf seal bridges the rail and the face for sealing leakage therebetween, and a plurality of pins extend through the leaf seal for providing mounting to the rail. Each pin includes a head and an opposite tip, with the pins being fixedly joined to the rail solely about the pin tips for freely supporting the pin heads in a cantilever without obstruction therearound for eliminating supporting tabs. A leaf spring is mounted on the pins between the heads and the leaf seal to pre-load the leaf seal against the rail and face to effect the sealing therebetween.Type: GrantFiled: November 13, 1996Date of Patent: August 25, 1998Assignee: General Electric CompanyInventors: Wilson Frost, John R. Staker, John H. Starkweather
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Patent number: 5791148Abstract: A liner for a gas turbine engine combustor is disclosed having a non-linear cavity section, wherein air and fuel injected therein form a trapped vortex for igniting and stabilizing a flame in the combustor. The cavity section, which is substantially rectangular in shape, has an aft wall, a forward wall, and an intermediate wall connected at one end to the aft wall and at the other end to the forward wall. A plurality of passages are provided in the aft wall for injecting fuel therethrough and a plurality of air passages are provided in the aft wall surrounding each fuel passage for injecting air therethrough. Cooling holes are also provided in the aft wall, the forward wall, and the intermediate wall for reinforcing the fuel/air vortex flow in the cavity section.Type: GrantFiled: June 7, 1995Date of Patent: August 11, 1998Assignee: General Electric CompanyInventor: David L. Burrus
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Patent number: 5785498Abstract: The present invention provides a composite airfoil, particularly useful as a wide chord fan blade having a high degree of twist in a large high bypass ratio turbofan engine. The composite airfoil of the present invention has a reinforced region of its airfoil that extends a portion of its span from its tip and a portion of its chord from its trailing edge. The region is covered by thin metallic sheathing bonded to trailing edge surfaces of the blade in a manner to reinforce that portion of the composite blade.Type: GrantFiled: January 29, 1996Date of Patent: July 28, 1998Assignee: General Electric CompanyInventors: Kerry W. Quinn, Bruce C. Busbey, Stephen J. Szpunar, Sidney B. Elston, III, James W. Tucker
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Patent number: 5783689Abstract: 5'-O-Acyl-5-fluorouridines and 5'-O-acyl-5-sluorocytidines are prepared by the direct acylation of the 5'-hydroxyl group with amino acids under Mitsunobu conditions and the amino acyl derivatives are coupled with other amino acids or peptides to provide antibacterial and antifungal derivatives of the nucleosides. For example, 5-fluorouridine is acylated at the 5'-hydroxyl group with an amino protected L-valine and the acylation product is deprotected to provide 5'-O-(L-valinyl)-5-fluorouridine having activity against Gram-positive bacteria including resistant staphylococcus. Preferred peptide derivatives comprise the tripeptides of ornithine and lysine wherein the terminal amino group is substituted by both hydroxy and acetyl. The latter peptides inhibit the growth of C. albicans.Type: GrantFiled: November 12, 1996Date of Patent: July 21, 1998Assignee: University of Notre DameInventors: Marvin J. Miller, Julia M. Dolence, Manuka Ghosh
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Patent number: 5782078Abstract: A link for supporting a core engine within an outer shell of a gas turbine engine is described. The link, in one form, includes an elongate rod having a first end and a second end, and first and second rod end bearings are secured at the first second ends, respectively. Each end bearing includes a bearing head and a threaded stud extending from the head. The elongate rod includes a first threaded socket located at first rod end and sized to be engaged to the first rod end bearing stud, and a second threaded socket located at second rod end and sized to be engaged to the second rod end bearing stud. The first and second tapered jam nuts are located at the first and second ends of rod. Each tapered jam nut includes a nut end having, for example, a hexagonal head and a tapered portion extending from the nut end. A bore extends through each tapered jam nut, and the bore is sized to have the stud extend therethrough. The bore has internal threads at least at the location of nut end.Type: GrantFiled: December 17, 1996Date of Patent: July 21, 1998Assignee: General Electric CompanyInventor: James W. Brantley
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Patent number: 5778658Abstract: A turbojet engine includes a compressor and turbine, with a combustor disposed therebetween for generating exhaust gas. An afterburner includes an annular casing and liner spaced radially inwardly therefrom to define a cooling duct therebetween. A recoup duct is disposed in flow communication with the compressor for receiving a portion of compressed air therefrom as recoup air. A plenum is disposed at an upstream end of the afterburner casing, and includes an inlet disposed in flow communication with the recoup duct for receiving the recoup air, and an outlet disposed in flow communication with the afterburner cooling duct for discharging the recoup air therein.Type: GrantFiled: December 24, 1996Date of Patent: July 14, 1998Assignee: General Electric CompanyInventors: Chester J. Lamando, Jr., Wayne R. Oliver
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Patent number: 5780229Abstract: Isolated polynucleotide molecules and peptides encoded by these molecules can be used in the analysis of alloantigen phenotypes, as well as in diagnostic and therapeutic applications, relating to human platelet Pen polymorphism. By analyzing genomic DNA or amplified genomic DNA, or amplified cDNA derived from platelet mRNA, it is possible to type glycoprotein GPIIIa with regard to the Pen polymorphism, for example, in the context of diagnosing and treating clinical syndromes associated with GPIIIa-related immune responses.Type: GrantFiled: June 7, 1995Date of Patent: July 14, 1998Assignee: The Blood Center Research Foundation, Inc.Inventor: Peter J. Newman
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Patent number: 5779152Abstract: An exhaust nozzle includes a plurality of circumferentially spaced apart exhaust flaps, and a plurality of scissor linkages joined to respective ones thereof. Each linkage includes a frame pivotally joined to a respective one of the flaps. A carriage is slidably mounted to the frame. A pair of circumferentially oppositely extending side links are pivotally joined at one end to the carriage, and pivotally joined at opposite ends to corresponding side links to form an interconnected ring thereof. A pair of circumferentially oppositely extending equalizer links are pivotally joined at one end to the frame, and pivotally joined at opposite ends to corresponding ones of the side links to maintain coordinated angular position of the side links pivotable on the carriage, and in turn maintain circumferential spacing between adjacent ones of the flaps.Type: GrantFiled: January 16, 1997Date of Patent: July 14, 1998Assignee: General Electric CompanyInventors: Bernard J. Renggli, Robert J. Ellerhorst
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Patent number: 5775589Abstract: The present invention provides coolable exhaust nozzle flap and seal assemblies having liners that are spaced inward and apart from their respective flap and seal cool walls, to form a cooling passage therebetween that converges in the axial downstream flow direction. One embodiment provides single wall multi-hole film cooled nozzle flap and seal liners particularly for use individually or in combination on convergent and divergent hollow flaps and seals for variable exhaust nozzles. Flap and seal coolable assemblies may be unitary structures that are integrally fabricated or formed such as by casting.Type: GrantFiled: July 23, 1997Date of Patent: July 7, 1998Assignee: General Electric CompanyInventors: John William Vdoviak, Robert Alexander Nicoll
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Patent number: 5771696Abstract: A gas turbine engine fuel injection assembly includes a combustor case surrounding a combustor having a dome. An arcuate manifold is disposed inside the combustor case adjacent to the dome, and includes a plurality of fuel injectors disposed in flow communication therewith for receiving fuel for injection into the combustor. An inlet stem is joined in flow communication with the manifold for channeling fuel thereto, and includes an inner fitting disposed in a mounting port in the combustor case. A mounting adaptor is joined to the combustor case at the mounting port, and circumferentially engages the inner fitting to restrain torsional movement thereof. An outer fitting extends in the adaptor and engages the inner fitting in flow communication therewith for supplying fuel thereto.Type: GrantFiled: October 21, 1996Date of Patent: June 30, 1998Assignee: General Electric CompanyInventors: Harold R. Hansel, George E. Cook
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Patent number: 5771680Abstract: A stiffened composite is provided exhibiting multi-directional reinforcement with continuous long fibers. The composite has a substrate and serpentine stiffeners adhered thereto. The stiffeners merge toward, join with and diverge from adjacent stiffeners to provide a stiffener matrix on the substrate. The serpentine stiffener permit the matrix to exhibit multi-directional reinforcement with the continuous long fibers within the serpentine ribs. The composite structures are useful as aircraft bypass ducts, and as other composite products.Type: GrantFiled: December 21, 1995Date of Patent: June 30, 1998Assignee: General Electric CompanyInventors: Ahmad P. Zahedi, Stephen C. Mitchell
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Patent number: 5768149Abstract: A design system for designing a tube for a gas turbine engine is described. The system including, in one embodiment, a computer workstation having a plurality of executable modules stored therein. The modules include a tube design module for routing a tube between tube fittings, a tube editing module for editing tube assembly geometry, and a tube detailing module for preparing detail drawings.Type: GrantFiled: December 20, 1995Date of Patent: June 16, 1998Assignee: General Electric CompanyInventors: Michael A. Umney, John J. Wright, Eric G.V. Hall, Kenneth J. Ashton
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Patent number: 5760289Abstract: A process for periodically calibrating an algorithm in a control unit of a system for balancing loads on a thrust bearing of a gas turbine engine rotor is disclosed involving the steps of initializing a calibration of the control unit algorithm, causing the engine to attain a crossover condition, measuring the residual load on the rotor thrust bearing, calculating a residual load on the rotor thrust bearing by means of the control unit algorithm, comparing the measured residual load and the calculated residual load on the rotor thrust bearing to determine a difference therebetween, and modifying the control unit algorithm to compensate for the difference between the measured and calculated residual loads on the rotor thrust bearing.Type: GrantFiled: January 2, 1996Date of Patent: June 2, 1998Assignee: General Electric CompanyInventor: Peter N. Skottegard
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Patent number: 5750681Abstract: Bicyclic .beta.-lactams comprising a 5- or 6-membered lactone or lactam ring are obtained in a process comprising a base induced intramolecular cyclization of a 4-substututed .beta.-lactam having a leaving group in the 1-position. An intramolecular nucleophile transfer reaction is proposed as the operative mechanism and the bicyclic .beta.-lactams are obtained in the required stereochemical form for biological activity. The compounds provided are useful intermediates for the preparation of antibiotics and .beta.-lactamase inhibitors.Type: GrantFiled: June 19, 1995Date of Patent: May 12, 1998Assignee: University of Notre Dame Du LacInventors: Min Teng, Marvin J. Miller
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Patent number: 5746574Abstract: A low profile joint is provided for a strut tube extending radially through a strut extending between an outer casing and an inner hub in a gas turbine engine frame. The strut tube has a longitudinal axis and a closed distal end. A sideseat is spaced from the distal end and is disposed substantially perpendicularly to the longitudinal axis to define a flow orifice. A secondary tube has a ballnose at a distal end thereof disposed in abutting contact with the sideseat for channeling fluid therebetween. A fastener joins together the strut and secondary tubes in compression between the ballnose and sideseat to maintain sealed contact therebetween for channeling fluid between the strut and secondary tubes.Type: GrantFiled: May 27, 1997Date of Patent: May 5, 1998Assignee: General Electric CompanyInventors: Robert P. Czachor, Robert E. Jones
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Patent number: 5746578Abstract: A rotor blade for a rotor of a gas turbine engine having an axis of rotation including a root portion, a platform portion connected to the root portion and having a damper pocket formed therein, an airfoil portion connected to the platform portion, a generally bar-shaped damping member loosely arranged in the damper pocket having at least one scrubbing surface, and at least one leg extending from the bar-shaped damping member for retaining the bar-shaped damping member in the damper pocket. The bar-shaped damping member is slidably displaceable and rotatable within the damper pocket during rotation of the rotor. The damper pocket in the platform portion has a rear surface with an upper portion and a lower portion at an angle to the upper portion, a pair of spaced side surfaces, and a pair of spaced lower surfaces extending from the rear surface lower portion which are substantially coplanar.Type: GrantFiled: October 11, 1996Date of Patent: May 5, 1998Assignee: General Electric CompanyInventors: Steven R. Brassfield, Alan L. Webb
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Patent number: 5738489Abstract: A turbine blade includes a dovetail, shank, platform, and airfoil. A cooling circuit extends radially therethrough for circulating a coolant. A thermal conductor is disposed on a lower surface of the platform for conducting heat from the platform to the shank for removal by the coolant in the cooling circuit.Type: GrantFiled: January 3, 1997Date of Patent: April 14, 1998Assignee: General Electric CompanyInventor: Ching-Pang Lee