Patents by Inventor David E. Murray
David E. Murray has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20190309834Abstract: The rotational to radial motion translation device is a variation of a device known as an overbalanced wheel. The device includes a hub with a number of spokes extending therefrom. Each spoke includes a movable slider assembly mounted thereon. A circular track engages a wheel on each slider assembly, such that as the hub rotates, the slider assemblies are move outward and inward on the spokes, providing a rotational to radial motion translation. The device can be used as a demonstration device, for example, for orbital mechanics, as a modified flywheel, or as an exercise device.Type: ApplicationFiled: April 5, 2018Publication date: October 10, 2019Inventor: DAVID E. MURRAY
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Patent number: 10005345Abstract: Disclosed is an awning which is specifically designed to attach, in a horizontal orientation, above the heads of passengers in a convertible automobile. The occupants may travel with the convertible top down and enjoy a relative cooler temperature and protection from ultraviolet rays. Generally, the screen material used to comprise the awning is of a mesh design, sized and fitted to be usable for providing overhead coverage of the passenger seats on a specific convertible. Varying lengths and widths of the screen material are fabricated for different size automobiles. The awning is supported at the windshield header of the convertible and by two vertically-oriented posts behind the rearmost seats of the convertible. The awning is readily installed on the automobile and may, when not in use, be rolled up and stored within the trunk of the subject convertible.Type: GrantFiled: March 18, 2016Date of Patent: June 26, 2018Inventor: David E. Murray
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Publication number: 20170267078Abstract: Disclosed is an awning which is specifically designed to attach, in a horizontal orientation, above the heads of passengers in a convertible automobile. The occupants may travel with the convertible top down and enjoy a relative cooler temperature and protection from ultraviolet rays. Generally, the screen material used to comprise the awning is of a mesh design, sized and fitted to be usable for providing overhead coverage of the passenger seats on a specific convertible. Varying lengths and widths of the screen material are fabricated for different size automobiles. The awning is supported at the windshield header of the convertible and by two vertically-oriented posts behind the rearmost seats of the convertible. The awning is readily installed on the automobile and may, when not in use, be rolled up and stored within the trunk of the subject convertible.Type: ApplicationFiled: March 18, 2016Publication date: September 21, 2017Inventor: David E. Murray
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Patent number: 6851042Abstract: An optional card including a digital signal processor (DSP) for use by a modem daughter board, where the modem daughter board is equipped with a data access arrangement (DAA) for upgrading a computer system to include modem and facsimile capabilities. The optional card may preferably be a sound board including a DSP and bus controller for interfacing with the I/O bus of the computer system, and a coder-decoder (CODEC) and connector for receiving and interfacing the daughter board modem to the DSP. In an alternative embodiment, the DSP is provided on the system board coupled to the host bus or the I/O bus of the computer system, and the modem functions, including a CODEC and DAA, are provided on an optional modem card. The CODEC includes logic for transferring digitized analog data to main memory as controlled by the CPU of the computer system. Modem software is provided to control communications and transfer of data in any of the embodiments.Type: GrantFiled: October 14, 1997Date of Patent: February 1, 2005Assignee: Hewlett-Packard Development Company, L.P.Inventor: David E. Murray
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Patent number: 6150402Abstract: Compounds, methods and compositions are provided for inducing natriuresis in a mammal. Methods for isolating and synthesizing the natriuretic compounds are also provided. Therapeutic methods using the natriuretic compounds are also provided. The natriuretic compounds are capable of inducing sodium excretion in a mammal without inducing corresponding prolongated potassium excretion.Type: GrantFiled: August 15, 1994Date of Patent: November 21, 2000Assignee: Loma Linda University Medical CenterInventors: William J. Wechter, David E. Murray, Darko Kantoci, Barry H. Levine, Elaine J. Benaksas
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Patent number: 6083982Abstract: Compounds, methods and compositions are provided for inducing natriuresis in a mammal. Methods for isolating and synthesizing the natriuretic compounds are also provided. Therapeutic methods using the natriuretic compounds are also provided. The natriuretic compounds are capable of inducing sodium excretion in a mammal without inducing corresponding prolonged potassium excretion.Type: GrantFiled: April 9, 1998Date of Patent: July 4, 2000Assignee: Loma Linda University MedicalInventors: William J. Wechter, David E. Murray, Darko Kantoci, Barry H. Levine, Elaine J. Benaksas
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Patent number: 6073186Abstract: A serial bus communications method and circuitry for low speed serial bus functions. Over a two-wire communications channel, a unidirectional clock line and a bidirectional data line are used to transfer data. A protocol defines permissions, acknowledgments, terminations and retries handshaking between points. Circuitry is provided for reducing the latency of the serial bus when cooperating with the low speed functions. A resistive connection scheme is disclosed for converting high voltage signals into lower voltage signals.Type: GrantFiled: February 7, 1997Date of Patent: June 6, 2000Assignee: Compaq Computer CorporationInventors: David E. Murray, David R. Wooten
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Patent number: 5928833Abstract: A radiation sensitive material comprises particles including a water-insoluble heat-softenable core surrounded by a shell which is soluble or swellable in aqueous medium. The material also includes a radiation sensitive component which, on exposure to radiation, causes the solubility characteristics of the material to change. The material may be positive- or negative-working and may be coated onto a substrate from aqueous media to form a radiation sensitive plate which, after image-wise exposure, can be developed in aqueous media and then heated to cause the particles to coalesce and form a durable printing image.Type: GrantFiled: November 1, 1996Date of Patent: July 27, 1999Assignee: DuPont (U.K.) Ltd.Inventors: Andrew E. Matthews, David E. Murray, Allen P. Gates, John R. Wade, Michael J. Pratt, William A. King
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Patent number: 5819051Abstract: A serial bus communications method and circuitry for low speed serial bus functions. Over a two-wire communications channel, a unidirectional clock line and a bidirectional data line are used to transfer data. A protocol defines permissions, acknowledgments, terminations and retries handshaking between points. Circuitry is provided for reducing the latency of the serial bus when cooperating with the low speed functions. A resistive connection scheme is disclosed for converting high voltage signals into lower voltage signals.Type: GrantFiled: December 29, 1995Date of Patent: October 6, 1998Assignee: Compaq Computer CorporationInventors: David E. Murray, David R. Wooten
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Patent number: 5802318Abstract: A keyboard system according to the present invention includes a serial bus host controller coupled to a serial bus keyboard. The keyboard includes both keyboard scan logic and scan code conversion logic for passing to the host controller over the serial bus. The host controller includes circuitry for processing the data between the serial bus and a host bus. The host controller further includes 8042 emulation logic for providing a hardware compatible interface to the keyboard controller. The 8042 emulation logic also includes circuitry for communicating over the serial bus during times when the serial bus has not yet been initialized.Type: GrantFiled: July 25, 1995Date of Patent: September 1, 1998Assignee: Compaq Computer CorporationInventors: David E. Murray, David R. Wooten, Randall L. Hess, Christopher C. Wanner, Jeff W. Wolford
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Patent number: 5609980Abstract: A radiation sensitive material comprises particles including a water-insoluble heat-softenable core surrounded by a shell which is soluble or swellable in aqueous medium. The material also includes a radiation sensitive component which, on exposure to radiation, causes the solubility characteristics of the material to change. The material may be positive- or negative-working and may be coated onto a substrate from aqueous media to form a radiation sensitive plate which, after image-wise exposure, can be developed in aqueous media and then heated to cause the particles to coalesce and form a durable printing image.Type: GrantFiled: May 14, 1992Date of Patent: March 11, 1997Assignee: DuPont (U.K.) Ltd.Inventors: Andrew E. Matthews, David E. Murray, Allen P. Gates, John R. Wade, Michael J. Pratt, William A. King
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Patent number: 5608279Abstract: An improved permanent magnet DC generator includes at least one stator arranged normal to a rotor. Preferably, there are a plurality of stators each having successive strata of windings in a first direction, windings in a second direction, and a core comprising a surrounding sheet of magnetizable material. The windings and core are separated by electrical insulation. The stator may be constructed to include recurring patterns of windings and cores as described above, all windings being formed from a continuous conductive filament. A stator is preferably includes a non-conductive base attachable to the generator by threaded fasteners. The rotor includes a pair of diametrically opposed magnet groups. Within each group, there is a leading magnet, a plurality of central magnets, and a trailing magnet. Individual magnets are arranged such that the forward face of the leading magnet, the outer face of the central magnets, and the rear face of the trailing magnet all expose like poles to the stator.Type: GrantFiled: September 26, 1994Date of Patent: March 4, 1997Inventor: David E. Murray
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Patent number: 5162193Abstract: A radiation sensitive device is provided with a discontinuous covering layer to improve vacuum draw down. The covering layer is produced by forming a solution or dispersion of the layer-forming material in a liquid hydrocarbon. Drops of the solution or dispersion are then sprayed onto the radiation sensitive device to form the discontinuous covering layer.Type: GrantFiled: November 19, 1990Date of Patent: November 10, 1992Assignee: Du Pont-Howson LimitedInventors: David E. Murray, Andrew E. Matthews
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Patent number: 5092280Abstract: An apparatus for loosening and removing sludge and other impurities from the interior of a heat exchanger vessel which may be the secondary side of a nuclear steam generator is disclosed herein. The apparatus generally comprises a nozzle having a first end that is detachably mountable into an access opening such as a sludge lance port in the secondary side of the generator, and a second end that extends into the interior of the secondary side at a 30 degree downward angle relative to the tubesheet in the vessel for minimizing the stresses applied to the heat exchanger tubes, and for uniformly reflecting the pulse back up toward the upper portions of the secondary side. A pulse generator is operably connected to the nozzle which has a controller for controlling the power level of the pulses generated. To further minimize such peak tube stresses, the pulse generator includes a pulse flattener, and the second end of the nozzle is aligned down the main tube lane.Type: GrantFiled: August 10, 1989Date of Patent: March 3, 1992Assignee: Westinghouse Electric Corp.Inventors: Richard D. Franklin, Gregg D. Auld, David E. Murray
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Patent number: 5069172Abstract: A process and system for removing sludge deposits from a tube sheet of a steam generator having at least one handhole provided adjacent the tube sheet is disclosed.Type: GrantFiled: September 26, 1990Date of Patent: December 3, 1991Assignee: Westinghouse Electric Corp.Inventors: Ray A. Shirey, David E. Murray
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Patent number: 5019329Abstract: Both a system and a method for removing sludge and debris from the interior of the secondary side of a nuclear steam generator is disclosed. The method comprises the steps of introducing a sufficient amount of water in the secondary side to submerge at least the tubesheet, generating a succession of shock waves in the water by means of pulses of pressurized gas to create shock waves that loosen the sludge and debris, and vertically flushing the interior of the secondary side by suctioning water off from the bottom portion of the steam generator while simultaneously forcefully spraying water from the top portion of the generator over the bundle of heat exchanger tubes in order to remove the sludge and debris loosened by the shock waves.Type: GrantFiled: December 26, 1989Date of Patent: May 28, 1991Assignee: Westinghouse Electric Corp.Inventors: Richard D. Franklin, Gregg D. Auld, David E. Murray
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Patent number: 5006304Abstract: A method for loosening and removing sludge and debris from the vessel of a heat exchanger, such as the secondary side of a nuclear steam generator, is disclosed herein. The method generally comprises the steps of providing a sufficient volume of a liquid, such as water, into the steam generator so that the lower portion which includes the tubesheet is submerged, and then generating a succession of pressure pulses within the water from one or more pressure pulse generators wherein each pressure pulse creates shock waves that exert momentary forces throughout the submerged portion of the generator of a magnitude sufficient to loosen the sludge and debris, but safely below the yield and fatigue limits of the heat exchanger tubes and other components within the generator. The pressure pulses commence as soon as a sufficient amount of water is introduced into the steam generator to submerge the tubesheet, and continue all the way through the draining of the steam generator.Type: GrantFiled: October 20, 1989Date of Patent: April 9, 1991Assignee: Westinghouse Electric Corp.Inventors: Richard D. Franklin, Gregg D. Auld, David E. Murray, John J. Lescisin, Albert R. Vaia, Thomas E. Dunn
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Patent number: 4921662Abstract: A method for loosening and removing sludge and debris from the vessel of a heat exchanger, such as the secondary side of a nuclear steam generator, is disclosed herein. The method generally comprises the steps of providing a sufficient volume of a liquid, such as water, into the steam generator so that the lower portion which includes the tubesheet is submerged, and then generating a succession of pressure pulses within the water from one or more pressure pulse generators wherein each pressure pulse creates shock waves that exert momentary forces throughout the submerged portion of the generator of a magnitude sufficient to loosen the sludge and debris, but safely below the yield and fatigue limits of the heat exchanger tubes and other components within the generator. The pressure pulses commence as soon as a sufficient amount of water is introduced into the steam generator to submerge the tubesheet, and continue all the way through the draining of the steam generator.Type: GrantFiled: April 19, 1988Date of Patent: May 1, 1990Assignee: Westinghouse Electric Corp.Inventors: Richard D. Franklin, Gregg D. Auld, David E. Murray, John J. Lescisin, Albert R. Vaia, Thomas E. Dunn
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Patent number: 4899697Abstract: An apparatus for loosening and removing sludge and other impurities from the interior of a heat exchanger vessel which may be the secondary side of a nuclear steam generator is disclosed herein. The apparatus generally comprises a nozzle having a first end that is detachably mountable into an access opening such as a sludge lance port in the secondary side of the generator, and a second end that extends into the interior of the secondary side at a 30 degree downward angle relative to the tubesheet in the vessel for minimizing the stresses applied to the heat exchanger tubes, and for uniformly reflecting the pulse back up toward the upper portions of the secondary side. A pulse generator is operably connected to the nozzle which has a controller for controlling the power level of the pulses generated. To further minimize such peak tube stresses, the pulse generator includes a pulse flattener, and the second end of the nozzle is aligned down the main tube lane.Type: GrantFiled: April 19, 1988Date of Patent: February 13, 1990Assignee: Westinghouse Electric Corp.Inventors: Richard D. Franklin, Gregg D. Auld, David E. Murray
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Patent number: 4565757Abstract: A photoconductive composition comprises a photoconductor and a sensitizer. The sensitizer has the formula ##STR1## wherein R represents alkyl; R1 represents H, alkyl or aryl; R2 represents the atoms required to complete a hetero or carboxyclic ring; A.sup.- represents an anion; and n represents the valency of the anion. The composition is sensitive to both laser light sources and tungsten light sources and is useful in electrophotographic reproduction.Type: GrantFiled: December 15, 1983Date of Patent: January 21, 1986Assignee: Vickers PLCInventors: Anthony J. Chalk, Graham Charnock, Allen P. Gates, David E. Murray, Ian S. Smith