Patents by Inventor David W. Evans

David W. Evans 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).

  • Patent number: 7928714
    Abstract: One embodiment of the invention includes a switching power supply system. The system includes a switch network comprising at least one switch configured to provide an output voltage based on switching activity thereof. The system also includes a switching controller configured to control the switch network to maintain the output voltage provided at an output based on a feedback signal associated with the output voltage. A converter pulse detector is configured to detect an output voltage overshoot condition based on the switching activity of the switch network corresponding to a transition in an output load to which the output voltage is provided.
    Type: Grant
    Filed: July 10, 2007
    Date of Patent: April 19, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Kae Ann Wong, David W. Evans, Joseph A. Nuniz, Norelis Medina, Siew Kuok Hoon, Wei-Chung Wu, Donald Thomas Pullen
  • Publication number: 20110002746
    Abstract: A method of assessing a multilayer strata (1) for rock bolt installation through a strata face (2) of said strata (1), comprises measuring potential differences between a first layer (3) of the strata (1) and each of one or more further layers (4, 5, 6, 7) of the strata (1).
    Type: Application
    Filed: June 11, 2010
    Publication date: January 6, 2011
    Applicant: DYWIDAG-SYSTEMS INTERNATIONAL PTY LIMITED
    Inventor: David W. Evans
  • Patent number: 7810757
    Abstract: The invention relates to a mounting device in an aircraft. In one aspect of the invention, a method is disclosed for assembling a metal securement member of the mounting device. In another aspect of the invention, a mounting device is disclosed. In another aspect of the invention, a method is disclosed for installing and using a mounting device in an aircraft.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: October 12, 2010
    Assignee: The Boeing Company
    Inventors: Brad L Kirkwood, Paul S. Gregg, Gerald D. Miller, Jeff D. Will, David W. Evans
  • Publication number: 20100162567
    Abstract: The invention relates to a mounting device in an aircraft. In one aspect of the invention, a method is disclosed for assembling a metal securement member of the mounting device. In another aspect of the invention, a mounting device is disclosed. In another aspect of the invention, a method is disclosed for installing and using a mounting device in an aircraft.
    Type: Application
    Filed: November 2, 2006
    Publication date: July 1, 2010
    Applicant: THE BOEING COMPANY
    Inventors: Brad L. Kirkwood, Paul S. Gregg, Gerry D. Miller, Jeff D. Will, David W. Evans
  • Publication number: 20090168387
    Abstract: Packaged integrated circuits having inductors and methods to form inductors in packaged integrated circuits are disclosed. An example method comprises forming a substrate having a first trace and a contact, attaching an integrated circuit to the substrate over the first trace, and electrically coupling the first trace to the contact via an electrical conductor that extends over the integrated circuit to form the inductor in the packaged integrated circuit.
    Type: Application
    Filed: December 31, 2007
    Publication date: July 2, 2009
    Inventors: Dirk Leipold, Chih-Ming Hung, David W. Evans
  • Patent number: 7491289
    Abstract: Laminate structures and methods for forming same are disclosed. In one embodiment, a laminate structure includes a metal-polymer composite lamina. The metal-polymer composite lamina has a first face and a second face spaced apart, and extends to a terminal edge. The lamina includes a ply of fiber-reinforced polymer that extends between the first face and the second face and has an interior edge. The interior edge defines at least one cutout. A ply of metal foil extends between the first face and the second face substantially from the interior edge filling the at least one cutout.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: February 17, 2009
    Assignee: The Boeing Company
    Inventors: Willard N. Westre, David W Evans, Edward Li, Marc J. Piehl, Eric Sager
  • Publication number: 20090015227
    Abstract: One embodiment of the invention includes a switching power supply system. The system includes a switch network comprising at least one switch configured to provide an output voltage based on switching activity thereof. The system also includes a switching controller configured to control the switch network to maintain the output voltage provided at an output based on a feedback signal associated with the output voltage. A converter pulse detector is configured to detect an output voltage overshoot condition based on the switching activity of the switch network corresponding to a transition in an output load to which the output voltage is provided.
    Type: Application
    Filed: July 10, 2007
    Publication date: January 15, 2009
    Inventors: Kae Ann Wong, David W. Evans, Joseph A. Nuniz, Norelis Medina, Siew Kuok Hoon, Wei-Chung Wu, Donald Thomas Pullen
  • Publication number: 20080105661
    Abstract: The invention relates to a mounting device in an aircraft. In one aspect of the invention, a method is disclosed for assembling a metal securement member of the mounting device. In another aspect of the invention, a mounting device is disclosed. In another aspect of the invention, a method is disclosed for installing and using a mounting device in an aircraft.
    Type: Application
    Filed: November 2, 2006
    Publication date: May 8, 2008
    Applicant: The Boeing Company
    Inventors: Brad L. Kirkwood, Paul S. Gregg, Gerry D. Miller, Jeff D. Will, David W. Evans
  • Patent number: 7224085
    Abstract: A single-inductor dual-output buck converter facilitates power conversion by converting a single DC power source/supply into two separate DC outputs, each of which can be configured to provide a selected/desired voltage. The converter includes a single inductor and three power switches, which control operation of the converter. The converter has four basic stages of operation in which power is initially supplied to a first output that also stores charge. Subsequently, the stored charge of the first output is employed to provide power to a second output.
    Type: Grant
    Filed: November 14, 2003
    Date of Patent: May 29, 2007
    Assignee: Texas Instruments Incorporated
    Inventors: Jun Chen, Valerian Mayega, David W. Evans, James L. Krug
  • Patent number: 7182291
    Abstract: A number of integrated floor structures made of lightweight composite materials for use in an aircraft are disclosed. Generally, each of such floors includes a top-layer skin, a bottom-layer skin disposed below the top-layer skin and a first structural core disposed between the top-layer skin and the bottom-layer skin, the first structural core being composed of a honeycomb composite material. One or more denser structural cores can also be incorporated at strategic locations.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: February 27, 2007
    Assignee: The Boeing Company
    Inventors: Williard N. Westre, David W. Evans
  • Patent number: 7115323
    Abstract: Laminate structures and methods for forming same are disclosed. In one embodiment, a laminate structure includes a metal-polymer composite lamina. The metal-polymer composite lamina has a first face and a second face spaced apart, and extends to a terminal edge. The lamina includes a ply of fiber-reinforced polymer that extends between the first face and the second face and has an interior edge. The interior edge defines at least one cutout. A ply of metal foil extends between the first face and the second face substantially from the interior edge filling the at least one cutout.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: October 3, 2006
    Assignee: The Boeing Company
    Inventors: Willard Westre, David W. Evans, Edward Li, Marc J. Piehl, Eric Sager
  • Patent number: 7072198
    Abstract: A switching mode converter, having a switching transistor and an inductor, has a discontinuity detector coupled to the inductor which detects when the converter enters the discontinuous mode. The discontinuity detector determines the portion of the cycle of the switching transistor in which the converter is in the discontinuous mode. A feedback controller is coupled to the output of the converter and to the discontinuity detector which alters a feedback control signal of the converter.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: July 4, 2006
    Assignee: Texas Instruments Incorporated
    Inventors: James L. Krug, David W. Evans, J. Patrick Kawamura
  • Patent number: 7061214
    Abstract: A single-inductor dual-output buck converter and control method that facilitates power conversion by converting a single DC power source/supply into two separate DC outputs, each of which can be configured to provide a selected/desired voltage by selection of respective duty cycles. The topology of the inverter includes a pair of diodes or switches that can selectively re-circulate inductor current. The converter is generally operated at a fixed frequency with four stages of operation. A first and third stage of operation provide power to a first and second output, respectively. A second and fourth stage of operation re-circulate inductor current and can partially recharge a battery type power source. The power output for each stage (voltage and current) can be selectively obtained by computing and employing appropriate time periods for the stages of operation that correspond to appropriate duty cycles.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: June 13, 2006
    Assignee: Texas Instruments Incorporated
    Inventors: Valerian Mayega, Jun Chen, James L. Krug, David W. Evans
  • Patent number: 6686729
    Abstract: A DC/DC switching regulator has a semiconductor switch coupled to an inductor, a first capacitor and a rectifier. A circuit to improve the switching efficiency of the semiconductor switch has a transmission gate coupled between the gate of the semiconductor switch and a second capacitor. The transmission gate is turned ON only when the gate of the semiconductor switch is about to make a positive or negative transition and isolated from the first and second voltage sources. A portion of the charge stored in the parasitic capacitance of the gate of the semiconductor switch can be stored in the second capacitor and reused to partially drive the semiconductor switch from the second to the first ON/OFF state. A further embodiment employs this technique with a synchronous rectifier in the regulator circuit.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: February 3, 2004
    Assignee: Texas Instruments Incorporated
    Inventors: J. Patrick Kawamura, James L. Krug, David W. Evans
  • Patent number: 6515880
    Abstract: Startup operation of a DC/DC switching regulator is controlled by providing a first signal (MAXDC) whose waveform has a duty cycle that varies over time, providing a second signal (620, 622) indicative of a load condition of the regulator, and combining the first and second signals to produce a third signal (312, 311). The third signal is used to control a power switch (231, 324) of the regulator.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: February 4, 2003
    Assignee: Texas Instruments Incorporated
    Inventors: David W. Evans, J. Patrick Kawamura, James L. Krug
  • Publication number: 20020087404
    Abstract: A system and method for network based marketing is presented. A server computer resides on a network and maintains a dynamically populated database of clients, patients, colleagues, and other recipients. A service provider authors or selects a communiqué to be sent to a set of recipients and submits to the server the communiqué and criteria defining the set of recipients. A service provider authors or selects a communiqué to be sent to a set of recipients and submits to the server the communiqué and criteria defining the set of recipients. The server receives the communiqué and the criteria, filters the database to determine the list of recipients, personalizes the communiqué for each of the recipients in the list and then delivers the personalized communiqué to each recipient, using the network as the delivery medium.
    Type: Application
    Filed: January 3, 2001
    Publication date: July 4, 2002
    Applicant: Einstein Industries, Inc.
    Inventors: Robert Carl Silkey, David W. Evans, Teodorico P. Ricasa, Dennis Gerasimenko, Michael Kremliovsky
  • Patent number: 6114050
    Abstract: The invention provides a hybrid laminate and skin panels of hybrid laminate structure that are suitable for a supersonic civilian aircraft. The hybrid laminates include layups of layers of titanium alloy foil and composite plies, that are optimally oriented to counteract forces encountered in use, that are bonded to a central core structure, such as titanium alloy honeycomb. The reinforcing fibers of the composite plies are selected from carbon and boron, and the fibers are continuous and parallel oriented within each ply. However, some plies may be oriented at angles to other plies. Nevertheless, in a preferred embodiment of the invention, a substantial majority of, or all of, the fibers of the hybrid laminates are oriented in a common direction. The outer surfaces of the laminates include a layer of titanium foil to protect the underlying composite-containing structure from the environment, and attack by solvents, and the like.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: September 5, 2000
    Assignee: The Boeing Company
    Inventors: Willard N. Westre, Heather C. Allen-Lilly, Donald J. Ayers, Samuel E. Cregger, David W. Evans, Donald L. Grande, Daniel J. Hoffman, Mark E. Rogalski, Robert J. Rothschilds
  • Patent number: 5956373
    Abstract: A digital modulation technique, broadcast system, and apparatus for the spectral superposition of an analog AM signal and a novel digitally modulated signal. Multiple mutually orthogonal, continuous-valued noise-like sequences are amplitude and phase modulated. Preferably, modulation coefficients are mapped from the formatted data to be transmitted and basis waveforms are generated which are then modulated by the modulation coefficients. These modulated waveforms may be ASK modulated lowpass waveforms and QAM or in-phase ASK modulated bandpass waveforms. Alternatively, the modulated waveforms may be double sideband QAM modulated lowpass waveforms and QAM modulated bandpass waveforms. In the broadcast system of the present invention, an amplitude modulated signal having a first frequency spectrum is broadcast simultaneously with a plurality of amplitude and/or phase modulated orthogonal noise-like signals having a bandwidth which encompasses the first frequency spectrum.
    Type: Grant
    Filed: November 14, 1996
    Date of Patent: September 21, 1999
    Assignee: USA Digital Radio Partners, L.P.
    Inventors: Don R. Goldston, David W. Evans, David C. Hartup
  • Patent number: 5866272
    Abstract: The invention provides a hybrid laminate and skin panels of hybrid laminate structure that are suitable for a supersonic civilian aircraft. The hybrid laminates include layups of layers of titanium alloy foil and composite plies, that are optimally oriented to counteract forces encountered in use, that are bonded to a central core structure, such as titanium alloy honeycomb. The reinforcing fibers of the composite plies are selected from carbon and boron, and the fibers are continuous and parallel oriented within each ply. However, some plies may be oriented at angles to other plies. Nevertheless, in a preferred embodiment of the invention, a substantial majority of, or all of, the fibers of the hybrid laminates are oriented in a common direction. The outer surfaces of the laminates include a layer of titanium foil to protect the underlying composite-containing structure from the environment, and attack by solvents, and the like.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: February 2, 1999
    Assignee: The Boeing Company
    Inventors: Willard N. Westre, Heather C. Allen-Lilly, Donald J. Ayers, Samuel E. Cregger, David W. Evans, Donald L. Grande, Daniel J. Hoffman, Mark E. Rogalski, Robert J. Rothschilds
  • Patent number: 5082485
    Abstract: Disclosed are compositions and methods of treating oak wilt, decline, or other fungus-induced diseases of trees. A mixture is applied to the root system comprising sulfur and pentachloronitrobenzene or pentachlorophenol as its active ingredients, and optionally other ingredients such as a wetting agent, nitrogen, an insecticide, and a nutrient source. It is preferable to simultaneously treat the bark and crown of the tree with a composition which includes a fungicide and an insecticide. Other ingredients, such as a wetting agent or a fungicide/nutrient, can also be present in the Bark & Crown Composition.
    Type: Grant
    Filed: October 5, 1988
    Date of Patent: January 21, 1992
    Inventor: David W. Evans