Patents by Inventor Christopher A. Tucker

Christopher A. Tucker 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).

  • Publication number: 20100182062
    Abstract: An integrated circuit audio processor having an internal-oscillator generated intermediate frequency reference provides for operation of an audio processor without requiring an external master clock. Input audio streams are sample-rate converted to an intermediate sample rate derived from the internal oscillator, which may be an LC oscillator. One or more output audio streams are generated from the one or more input audio streams at the intermediate sample rate and are converted from the intermediate sample rate to corresponding output sample rates. A divider generates the intermediate sample rate from the oscillator output, and is programmed to control the intermediate sample rate to ensure that the intermediate sample rate is in the proper range for operation of the integrated circuit. The divider can be programmed to accommodate changes in process, voltage and/or temperature of the IC, so that the intermediate sample rate is maintained near an expected frequency.
    Type: Application
    Filed: March 27, 2009
    Publication date: July 22, 2010
    Inventors: Gautham Devendra Kamath, Jeff W. Baumgartner, John Christopher Tucker
  • Publication number: 20090194607
    Abstract: An aerosol generator periodically forms aerosolized fragrance material by repeatedly supplying a liquid fragrance material to a capillary passage via only capillary action and heating the capillary passage, such that the liquid fragrance material at least partially volatilizes and is driven out of an outlet of the capillary passage. A wick feeds the liquid fragrance material to an inlet of the capillary passage by capillary action. An apparatus and method for generating such an aerosolized fragrance material, as well as the methods of heating, are disclosed.
    Type: Application
    Filed: August 28, 2008
    Publication date: August 6, 2009
    Applicant: Philip Morris USA Inc.
    Inventors: Walter A. Nichols, David Keeler, Christopher Tucker
  • Patent number: 7543662
    Abstract: A drill bit including at least one stress-relieved cutting element, wherein the at least one cutting element is mounted on the drill bit, wherein the stress-relieved cutting element includes a substrate, at least one transition layer disposed upon the substrate and a polycrystalline diamond layer having a thickness of at least 0.008 inches disposed upon the at least one transition layer.
    Type: Grant
    Filed: February 7, 2006
    Date of Patent: June 9, 2009
    Assignee: Smith International, Inc.
    Inventors: J. Daniel Belnap, Lynn Belnap, Christopher A. Tucker
  • Patent number: 7438055
    Abstract: A fuel injection system includes a fuel injector socket including a first attachment feature and a fuel injector including a second attachment feature that corresponds with the first attachment feature. The first attachment feature engages with the second attachment feature connecting the fuel injector to the fuel injector socket and preventing rotational movement of the fuel injector relative to the fuel injector socket. The corresponding attachment features not only enable simple connection and disconnection of a fuel injector to a fuel injector socket of a fuel rail, but can also be integrated into existing injector to fuel rail assembly processes and are applicable in any fuel injection system. The corresponding attachment features may be used with metal fabricated fuel rail assemblies as well as for fuel rail assemblies where the manifold supply tube and the fuel injector sockets are overmolded with a plastic material.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: October 21, 2008
    Assignee: Delphi Technologies, Inc
    Inventors: Wenbin Xu, David A. Webb, Christopher A. Tucker, Christopher M. Cass
  • Publication number: 20080144861
    Abstract: A method and apparatus for controlling a selectable voltage audio power output stage provides a mechanism for raising the selected power amplifier output voltage in time for the arrival of signal peaks to avoid clipping. Signal peaks may either be delayed by delaying an increase in volume control level or enabling signal compression for a predetermined time period, so that sufficient time is provided for the amplifier power supply to stabilize at a higher operating voltage when an increase of power supply voltage is selected. Alternatively, a signal level may be determined at an upstream source, such as a decoder or filter that provides information in sufficient advance of the arrival of the peaks, and used to control the power supply selection, so that the higher power supply voltage level is selected in advance of arrival of the signal peaks that would otherwise cause clipping at the power amplifier output.
    Type: Application
    Filed: December 14, 2006
    Publication date: June 19, 2008
    Inventors: John L. Melanson, John Christopher Tucker
  • Publication number: 20080044041
    Abstract: An energy-efficient consumer device audio power output stage provides improved battery life and reduced power dissipation. A power supply having a selectable operating mode supplies the power supply rails to the power amplified output stage. The operating mode is controlled in conformity with the audio signal level, which may be determined from a volume control setting of the device and/or from a signal level detector that determines the amplitude of the signal being amplified. The power supply may be a charge pump in which the operating mode uses a capacitive divider to provide for selection of a power supply output voltage that is a rational fraction of the power supply output voltage in a full-voltage operating mode.
    Type: Application
    Filed: December 13, 2006
    Publication date: February 21, 2008
    Inventors: John Christopher Tucker, Daniel John Allen, John L. Melanson, Ammisetti Prasad
  • Publication number: 20080003247
    Abstract: The present invention relates to an ethanol-free, non-fatty, non-sticky perfumed aqueous cosmetic microemulsion composition, including one or more fragrance materials, a solvent, an aqueous medium, and optionally, one or more surfactants; wherein the solvent in the microemulsion is a vicinal diol such as 1,2-hexanediol.
    Type: Application
    Filed: April 21, 2005
    Publication date: January 3, 2008
    Inventors: Reed Shick, Christian Piechocki, Christopher Tucker, Letha Gatz
  • Publication number: 20070287675
    Abstract: Inhalable compositions are described. The inhalable compositions comprise one or more respirable aggregates, the respirable aggregates comprising one or more poorly water soluble active agents, wherein at least one of the active agents reaches a maximum lung concentration (Cmax) of at least about 0.25 ?g/gram of lung tissue and remains at such concentration for a period of at least one hour after being delivered to the lung. Methods for making such compositions and methods for using such compositions are also disclosed.
    Type: Application
    Filed: August 26, 2005
    Publication date: December 13, 2007
    Applicants: THE DOW CHEMICAL COMPANY, BOARD OF REGENTS UNIVERSITY OF TEXAS SYSTEM
    Inventors: James Hitt, True Rogers, Brian Scherzer, Ian Gillespie, Paula Garcia, Nicholas Beck, Christopher Tucker, Timothy Young, David Hayes, Robert Williams III, Keith Johnston, Jason McConville, Jay Peters, Robert Talbert, David Burgess
  • Patent number: 7170338
    Abstract: An amplifier including a current source transistor for supplying a current to a node from a voltage rail and an input transistor switching the current at the node in response to an input signal chopped by a chopping signal. A cascode-chopping transistor operating both as a cascode transistor and a chopping transistor couples the node and an amplifier output in response to a bias voltage chopped by the chopping signal.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: January 30, 2007
    Assignee: Cirrus Logic, Inc.
    Inventor: John Christopher Tucker
  • Publication number: 20070009367
    Abstract: A pump that includes a cylinder housing having a through bore. A cylinder liner is disposed substantially within the through bore and includes a substantially uniform aperture having a first diameter. A plunger includes an engagement portion having a second diameter smaller than the first diameter. The first diameter and the second diameter are sized to define a first diametrical clearance that is less than about 0.1 percent of the second diameter.
    Type: Application
    Filed: April 21, 2005
    Publication date: January 11, 2007
    Applicant: KMT Waterjet Systems, Inc.
    Inventors: Dieter Tischler, Eric Roll, Jose Munoz, Christopher Tucker, Weishun Ni, Mitchell Reineck
  • Publication number: 20060180354
    Abstract: A drill bit including at least one stress-relieved cutting element, wherein the at least one cutting element is mounted on the drill bit, wherein the stress-relieved cutting element includes a substrate, at least one transition layer disposed upon the substrate and a polycrystalline diamond layer having a thickness of at least 0.008 inches disposed upon the at least one transition layer.
    Type: Application
    Filed: February 7, 2006
    Publication date: August 17, 2006
    Applicant: Smith International, Inc.
    Inventors: J. Belnap, Lynn Belnap, Christopher Tucker
  • Patent number: 6955503
    Abstract: The method for re-deploying an offshore jacket using a plinth involves the steps of locating an offshore jacket; constructing a plinth with a plinth legs, a skirt pile sleeve, a mud mat, a space frame, guide cones, and a trestle per plinth leg; placing the plinth at the second site; driving one skirt pile into each skirt pile sleeve; disconnecting the jacket legs from the seabed at the first site; lifting the offshore jacket above the seabed; moving the offshore jacket from the first site to the second site; and lowering the offshore jacket such that each jacket leg stabs into each guide cone on the plinth until each jacket leg mud mat contacts each trestle; and inserting pin piles through each jacket leg and plinth leg and grouting the pin piles to effect a permanent structural connection between plinth and jacket.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: October 18, 2005
    Inventors: Robert Magee Shivers, III, Michael Christopher Tucker, David Clark Schuman
  • Patent number: 6629650
    Abstract: An engine fuel injector includes an internal fuel passage in which pressure waves can develop upon opening and closing of an injection valve. A fuel pressure damper is associated with the fuel passage and operates to vary the internal volume of the fuel passage in a manner to reduce the amplitude of pressure variations and pressure waves in the fuel passage. A variety of fuel pressure damper embodiments are disclosed.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: October 7, 2003
    Assignee: Delphi Technologies, Inc.
    Inventors: Steven M. Curran, Ahmet T. Becene, Charles Wilson Braun, Kern E. Haynes, Leonard Lee Shebert, Jr., Christopher A. Tucker, David J. Thompson, Jr., Brent Jack Wahba, Michael Raymond Raney, James M. Banna
  • Patent number: 6513608
    Abstract: Cutting elements for incorporation in a drill bit are provided having a body and an ultra hard material cutting layer over an end face of the body. A plurality of abutting shallow depressions are formed on the end face of the body. A transition layer may be incorporated between the body and the ultra hard material layer. The transition layer preferably has material properties intermediate between the properties of the body and the ultra hard material layer.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: February 4, 2003
    Assignee: Smith International, Inc.
    Inventors: Ronald K. Eyre, Christopher A. Tucker
  • Publication number: 20030010847
    Abstract: An engine fuel injector includes an internal fuel passage in which pressure waves can develop upon opening and closing of an injection valve. A fuel pressure damper is associated with the fuel passage and operates to vary the internal volume of the fuel passage in a manner to reduce the amplitude of pressure variations and pressure waves in the fuel passage. A variety of fuel pressure damper embodiments are disclosed.
    Type: Application
    Filed: July 10, 2001
    Publication date: January 16, 2003
    Inventors: Steven M. Curran, Ahmet T. Becene, Charles Wilson Braun, Kern E. Haynes, Leonard Lee Shebert, Christopher A. Tucker, David J. Thompson, Brent Jack Wahba, Michael Raymond Raney, James M. Banna
  • Publication number: 20020108791
    Abstract: Cutting elements for incorporation in a drill bit are provided having a body and an ultra hard material cutting layer over an end face of the body. A plurality of abutting shallow depressions are formed on the end face of the body. A transition layer may be incorporated between the body and the ultra hard material layer. The transition layer preferably has material properties intermediate between the properties of the body and the ultra hard material layer.
    Type: Application
    Filed: February 9, 2001
    Publication date: August 15, 2002
    Inventors: Ronald K. Eyre, Christopher A. Tucker
  • Patent number: 6400297
    Abstract: A method and system are disclosed for operating two or more integrator amplifiers with different power supplies for a modulator of an analog-to-digital (“A/D”) converter. A first, upstream integrator is operated with one power supply, and the other downstream integrator(s) is/are operated with at least another power supply. The modulator has amplifiers with coefficient gains having values that are determined and set so that voltage levels for the at least another integrator are maintained within operating and output limits. An integrating coefficient gain k1 for the first integrator is set to have a sufficiently large value so that an integrating capacitor can be made small for the one integrator. Another integrating coefficient gain k2 for a second integrator is set to have a sufficiently small value so that an output voltage from the first integrator is sufficiently attenuated to a voltage value within an operating range of the second integrator.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: June 4, 2002
    Assignee: Cirrus Logic, Inc.
    Inventor: John Christopher Tucker
  • Patent number: 6369733
    Abstract: A method and system of operating dynamic element matching (“DEM”) components of a DEM system with two or more power supplies are disclosed. A connection system of the DEM system is driven with one power supply operating at one voltage. Connection system couples to components that are to be matched and equalized in usage by ordering outputs to components and activating the components according to ordered outputs. A connection calculator of the DEM system is driven with another power supply operating at another voltage different from the one voltage. Connection calculator is coupled to the connection system, and connection calculator calculates an order of usage of components. A level shifter system level shifts voltage levels of signals from connection system to connection calculator, and another level shifter system level shifts voltage levels of signals from connection calculator to connection system.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: April 9, 2002
    Assignee: Cirrus Logic, Inc.
    Inventors: John Christopher Tucker, Amiya Anand Chokhawala, Yuqing Yang, John Laurence Melanson