Patents Represented by Attorney, Agent or Law Firm Weingarten, Schurgin, Gagnebin & Hayes
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Patent number: 6314815Abstract: In order to compensate non-linearity in the zero drift of the bridge at very low temperatures, a strain gauge in at least one of the arms of the bridge is in series with a resistor, e.g., a connection lead, of resistance that is much less than that of the strain gauge, and a compensation circuit is connected in parallel with the resistor. The compensation circuit includes a resistive element, e.g., a platinum probe, whose resistance varies as a function of temperature in such a manner as to influence, in the very low temperature range, the resistance of the parallel circuit of which it forms a part, and to do so in a manner that is sensitive to temperature and that increases with decreasing temperature.Type: GrantFiled: February 23, 2000Date of Patent: November 13, 2001Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation - S.N.E.C.M.A.Inventor: Jean-Bernard Avisse
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Patent number: 6315412Abstract: A Non-Maxwellian, free viewing system capable of psychophysical measurement of visual sensitivity for the determination of ocular components is disclosed. The apparatus features electronically controlled light emitting elements whose outputs are variable with respect to intensity and temporal pattern, and can be combined by a small number of optical components. The light emitting elements can have outputs of different wavelengths, can be positioned at different retinal locations, and can be viewed through masks or apertures having different geometries. These features permit miniaturization of the device, and eliminate a major or experimental difficulty of light path alignment associated with larger systems, thus simplifying the measurement of macular pigment density compared to procedures used with a full sized optical bench.Type: GrantFiled: June 2, 2000Date of Patent: November 13, 2001Assignee: The Schepens Eye Research Institute, Inc.Inventors: D. Max Snodderly, Richard I. Land, Billy R. Wooten
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Patent number: 6317439Abstract: A SONET interface line unit which includes an interface to a SONET ring, an STM switch fabric, and STM synchronization function within a single module. The line unit includes an optical interface for communicating SONET traffic with a SONET ring, an ATM interface for communicating ATM traffic with an ATM switch fabric unit, and two or more service unit interfaces for communicating with service units having service interfaces to a service side of a network element. The service unit interfaces operate using the STM protocol. The line unit further includes forwarding logic for extracting ATM traffic and STM traffic from the composite traffic received from the SONET ring. The line unit further provides synchronization signals to other units within the network element, derived from a selected timing reference signal. An extended synchronization module is used to interface to a larger number of timing references within the device.Type: GrantFiled: June 3, 1999Date of Patent: November 13, 2001Assignee: Fujitsu Network Communications, Inc.Inventors: Gabriel E. Cardona, Charles M. Honaker, Jr., Ertugrul Baydar
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Patent number: 6311504Abstract: An absorption heat pump and controlling methods thereof for utilizing exhaust heat to obtain high- and low-temperature fluids.Type: GrantFiled: March 29, 2000Date of Patent: November 6, 2001Assignee: Sanyo Electric Co., Ltd.Inventors: Shiguma Yamazaki, Masahiro Furukawa, Kazuyasu Iramina
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Patent number: 6312318Abstract: A method and a grinding machine for centerless angular plunge grinding a workpiece are disclosed. The workpiece is rotatable about a first axis and has essentially cylindrical sections of different diameter and at least one shoulder located between the sections. The grinding wheel has a conically shaped periphery and is rotated about its axis inclined relative to the workpiece axis by a predetermined angle. The grinding wheel is brought into engagement with the workpiece with at least an axial surface line of its periphery. The grinding wheel and the workpiece are fed-in relative to one another by a predetermined amount of overmeasure. The feeding-in is effected in at least two steps. In a first step the feeding-in is effected essentially in a radial direction. In a second step the feeding-in is effected essentially in an axial direction. In the first step essentially the overmeasure in the area of the cylindrical sections is removed. In the second step essentially the overmeasure of the shoulder is removed.Type: GrantFiled: August 25, 2000Date of Patent: November 6, 2001Assignee: Schaudt Mikrosa BWF GmbHInventors: Heinrich Mushardt, Ingo Rauch
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Patent number: 6313610Abstract: A battery protection circuit includes back-to-back connected metal-oxide-semiconductor field-effect transistors (MOSFETs). Detection circuitry detects whether the battery is in a normal charge condition, an overcharged condition, or an over-discharged condition, and for the overcharged and over-discharged conditions the circuitry asserts a corresponding enable signal. For each MOSFET, a corresponding gate voltage regulating circuit controls the gate voltage such that (i) when the corresponding enable signal is de-asserted, the gate voltage is sufficient to enable the MOSFET to strongly conduct current in either direction, and (ii) when the corresponding enable signal is asserted, the gate voltage is a function of the polarity of drain-to-source voltage of the MOSFET.Type: GrantFiled: August 21, 2000Date of Patent: November 6, 2001Assignee: Texas Instruments IncorporatedInventor: Roman Korsunsky
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Patent number: 6314314Abstract: A technique for localizing an internal bleeding site in the human body is provided. The technique entails the injection of radioactively labelled protein or factor used in the clotting process in solution into a human body When the protein or factor has built up in sufficient quantities at a bleeding site to form a clot, the radioactive emission is used to detect the location of the clot. One or more passes of the detector can be used to accurately pinpoint the location of the clot, and thereby, locate the bleeding site.Type: GrantFiled: January 14, 1999Date of Patent: November 6, 2001Inventor: Seth J. Karp
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Patent number: 6308582Abstract: The present invention relates to a measuring device for measuring flux rate and temperature of a flowable medium, comprising an external pipe sleeve and an internal pipe provided within said external pipe sleeve, with the diameter of said internal pipe having been dimensioned such that a cavity is formed between said internal pipe and said external pipe sleeve, wherein medium is allowed to flow into said internal pipe via an aperture formed at a first end of said internal pipe, and an aperture is provided at the second end of said internal pipe via which the medium can flow out of the internal pipe and exit the measuring device via said cavity. A flux meter and a temperature meter are provided within or along this flow path formed in the measuring device.Type: GrantFiled: April 26, 1999Date of Patent: October 30, 2001Assignee: Reich KG Regel-und SicherheitstechnikInventor: Helmuth Bender
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Patent number: 6310874Abstract: Flow of data units to an address resolution processor is controlled to inhibit multiple data units from a single multicast flow from being enqueued with the address resolution processor. In a switch having a plurality of Input/Output Application Specific Integrated Circuits (“I/O ASICs”) with a plurality of ports, no more than one data unit from each I/O ASIC is permitted to be enqueued with the address resolution processor at any point in time. A separate learn pending indicator may be defined for each I/O ASIC in the switch.Type: GrantFiled: March 19, 1998Date of Patent: October 30, 2001Assignee: 3Com CorporationInventors: David S. Miller, Lawrence Aaron Boxer, Edward A. Heiner, Jr.
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Patent number: 6306347Abstract: A multiple single use optical sensor includes a series of continuous sensor stripes deposited on a substrate web. At least one sample chamber is adapted to extend transversely across a discrete portion of the series of sensor stripes to facilitate analysis of a sample disposed therein. The sample chamber may be moved, or additional sample chambers provided to enable subsequent measurements of additional samples at unused discrete portions of the sensor stripes. The continuous nature of the sensor stripes provides consistency along the lengths thereof to enable calibration data obtained from one discrete portion of the sensor stripes to be utilized for testing an unknown sample an other discrete portion of the sensor stripes. This advantageously eliminates the need for any particular discrete portion of the sensor stripes to be contacted by more than one sample, for improved sensor performance.Type: GrantFiled: January 21, 1998Date of Patent: October 23, 2001Assignee: Bayer CorporationInventors: Richard W. Mason, Rudolf E. Slovacek, Kevin J. Sullivan
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Patent number: 6305564Abstract: A biaxially oriented bottle having a carrying handle is provided. A carrying handle, which is provided at a side surface of a neck portion, and which is injection molded together with the neck portion of a preform, is used without further modification as the carrying handle of a biaxial stretching blow molded, thinly formed bottle. The carrying handle is integrally formed in a U-shaped configuration from a grip portion and arm portions on both ends of the grip portion. The arm portions are integrally formed with base portions comprising projected pieces formed at symmetrical positions on both sides of the neck portion. The arm portions, moreover, extend out to the sides with a length greater than the height of the neck portion. The boundary of the base portion and arm portion is thinly molded by being constricted and forms a connecting portion which can be freely bent in a vertical direction.Type: GrantFiled: December 27, 1999Date of Patent: October 23, 2001Assignee: A. K. Technical Laboratory, Inc.Inventors: Setsuyuki Takeuchi, Nobukuni Ibe
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Patent number: 6304678Abstract: A technique for post-processing decoded compressed images to reduce decoding-related artifacts employs a maximum likelihood estimation of an original image f. The decoded image is modeled as a montage of “flat surfaces” of different intensities, where the number of flat surfaces and their intensities are generally different in different regions of the decoded image. The intensity of each pixel is conditionally adjusted to that of a corresponding flat surface in a window region surrounding the pixel. In a general algorithm, the flat surface model is fitted to the observed image by estimating the model parameters using the “k-means” algorithm and a hierarchical clustering algorithm. A cluster similarity measure (CSM) is used to determine the number of intensity clusters, and hence flat surfaces, in the model of a window region surrounding a pixel of interest. The pixel intensity is adjusted to an estimated value which is the mean intensity of the cluster in which the pixel falls.Type: GrantFiled: May 12, 2000Date of Patent: October 16, 2001Assignee: The Trustees of Boston UniversityInventors: Seungjoon Yang, Yu Hen Hu, Truong Q. Nguyen, Damon L. Tull
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Patent number: 6298654Abstract: An ambient pressure gas turbine system is provided for mid-range power plants (for example, 1-4 MW) while achieving low NOx emission levels. The system includes a combustor that burns a hydrocarbon fuel at ambient pressure. A first heat exchanger upstream of the combustor heats the working fluid. A turbine downstream from the combustor expands combustion gases. The combustion gases are directed to the first heat exchanger for heat exchange with the working fluid and then to a compressor operative to compress the combustion gases. A second heat exchanger between the first heat exchanger and the compressor further cools the combustion gases to the compressor inlet temperature.Type: GrantFiled: September 5, 2000Date of Patent: October 9, 2001Inventors: Géza Vermes, János M. Beér
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Patent number: 6301135Abstract: A primary-side power modulator for an isolated switching-mode power supply operating under secondary-side control comprising a pulse width determining circuit for real-time primary-side adjustment of a PWM control signal received from a secondary-side PWM controller. While accepting pulse width commands from an isolated secondary-side PWM controller, the pulse width determining circuit has the ability to reduce the width of the switching pulse in response to primary-side information. The power modulator may further comprise a start-up circuit for ensuring that the primary-side supply voltage is above a minimum under-voltage lock out threshold, a soft start circuit for controlling the power switch at power-up, a pulse receiver for receiving the PWM control signal generated by the secondary-side PWM controller, and a drive circuit for driving an external solid-state power switch with the adjusted PWM control signal.Type: GrantFiled: December 30, 1999Date of Patent: October 9, 2001Assignee: Texas Instruments IncorporatedInventors: Robert A. Mammano, Harvey L. Golladay
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Patent number: 6299747Abstract: This invention relates to a competitive-binding, capillary electrophoretic method of detecting new therapeutic regulatory (modulating) and diagnostic compounds in natural samples and other complex biological materials. The present method generally comprises mixing a preselected, detectable target with a sample of complex biological material to produce a first, sample/target mixture capillary electrophoresis apparatus. Subsequently, the first mixture is mixed with a pre-selected, tight-binding competitive ligand (TBCL), prior to produce a second, sample/target/TBCL mixture, for a predetermined optional incubation period sufficient to allow the TBCL to bind a pre-selected percentage of the available target in the absence of any other ligand. An aliquot of the second mixture is subsequently subjected to pre-optimized capillary electrophoresis, during which the migration of the target is monitored.Type: GrantFiled: September 29, 1998Date of Patent: October 9, 2001Assignee: Cetek CorporationInventors: Yuriy M. Dunayevskiy, James L. Waters, Dallas E. Hughes
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Patent number: 6299007Abstract: A heat-resistant packaging container made of a polyester resin, formed by stretch-blow molding is provided. A top portion of a bottom face is formed to have a large wall thickness to impart a resistance to heat deformation. A peripheral wall of the bottom face is formed to have a wall thickness that is gradually reduced from the top portion toward an arc grounding edge around the bottom face. An outer peripheral wall of the bottom portion is stretch molded from inside of the grounding edge so as to have a wall thickness as same as that of the body portion to attain a heat resistance. The inside of the grounding edge connecting to the peripheral wall of the bottom face is formed into a tilt surface which is oriented upwardly in consideration of an amount of expanding deformation &agr; of the grounding edge due to heating and loading.Type: GrantFiled: October 19, 1999Date of Patent: October 9, 2001Assignee: A. K. Technical Laboratory, Inc.Inventor: Setsuyuki Takeuchi
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Patent number: 6298550Abstract: An electro-surgical forceps are provided which minimize sticking to tissue of a patient. The forceps include a pair of electrically conducting blade members extending from an insulated cap portion. The blade members include an inner layer of copper or copper alloy having a thickness sufficient to dissipate heat generated at the tip to prevent sticking of tissue to the forceps during use. An outer covering of nickel or a nickel alloy covers the inner copper layer to prevent exposure of the copper. The outer covering comprises a first nickel layer metallurgically bonded to one side of the inner copper layer and a second nickel layer metallurgically bonded to an opposite side of the inner copper layer. The thickness of the nickel layers is sufficient to withstand the forming process, to minimize or prevent delamination from the inner copper layer, and to minimize or prevent exposure of the inner layer.Type: GrantFiled: July 29, 1999Date of Patent: October 9, 2001Assignee: Kirwan Surgical Products, Inc.Inventor: Lawrence T. Kirwan, Jr.
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Patent number: 6295654Abstract: A continuous protective garment provides a matrix of cells each containing a cube-like protective element. Continuous layers of fabric bonded along intersecting lines provides an individual cell for each of plural protective elements sandwiched between the fabric layers. An outer rigid protective surface of each protective element absorbs externally applied forces, while a middle cushioning layer provides dispersion and buffering of such externally applied forces. An innermost layer of a fluid-resistant material helps prevent perspiration from being absorbed, while a ventilation hole through the center of each protective element provides air circulation without compromising protective qualities. A substantially continuous array of cells containing the protective elements provides comprehensive surface coverage over the torso and arms of the wearer.Type: GrantFiled: March 15, 2000Date of Patent: October 2, 2001Inventor: Daniel P. Farrell
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Patent number: 6297750Abstract: A linear position encoder is provided which is not affected by ambient light, smoke, moisture, particulate matter, and also not affected by electrical interference such as may be caused by stray fields or permanent magnets or magnetic particles. The encoder comprises a linear scale having an excitation loop disposed along the length of the scale and having electrical terminals preferably disposed at one end of the scale. An alternating current is applied to the excitation loop to create an alternating magnetic field. At least one periodic conductive pattern is provided on an outer side of the excitation loop. The periodic pattern has electrical terminals preferably at the same end of the scale as the terminals of the excitation loop. A sensor is provided on a small printed circuit card that is movable in relation to the scale. The card has a pickup loop which receives energy coupled from the scale excitation loop and which induces current in the periodic pattern.Type: GrantFiled: September 13, 2000Date of Patent: October 2, 2001Assignee: Dynamics Research CorporationInventors: Sidney A. Wingate, John A. Sotir
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Patent number: D448549Type: GrantFiled: August 7, 2000Date of Patent: October 2, 2001Assignee: Dewks, LLCInventor: Gary Duclos