Patents by Inventor David J. Erickson

David J. Erickson 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: 20240321523
    Abstract: A capacitor and methods of processing an anode metal foil are presented. The capacitor includes a housing, one or more anodes disposed within the housing, one or more cathodes disposed within the housing, one or more separators disposed between an adjacent anode and cathode, and an electrolyte disposed around the one or more anodes, one or more cathodes, and one or more separators within the housing. The one or more anodes each include a metal foil that includes a first plurality of tunnels through a thickness of the metal foil in a first ordered arrangement having a first diameter, and a second plurality of tunnels through the thickness of the metal foil having a second ordered arrangement and a second diameter greater than the first diameter.
    Type: Application
    Filed: June 4, 2024
    Publication date: September 26, 2024
    Inventors: Ralph Jason Hemphill, David R. Bowen, Kurt J. Erickson, Peter Fernstrom
  • Publication number: 20240310553
    Abstract: A system to detect obstacles includes a power beam transmission circuit, a power beam reception circuit arranged to receive a power beam from the power beam transmission circuit, an emitter module, and a detector module arranged to distinguish between a first characteristic and a second characteristic. The emitter module includes a first emitter arranged to emit a first signal having the first characteristic, the first signal emitted in proximity to the power beam, and a second emitter arranged to emit a second signal having the second characteristic, the second characteristic different from the first characteristic. The detector module includes a first detector arranged to respond to the first signal emitted by the first emitter, the detector module being arranged to determine when an obstacle is in or near a line-of-sight transmission path between the first emitter and the first detector.
    Type: Application
    Filed: January 2, 2024
    Publication date: September 19, 2024
    Inventors: Jordin T. Kare, Thomas J. Nugent, David Bashford, Carsten Casey Erickson, Thomas W. Bashford
  • Publication number: 20240280737
    Abstract: An organic light emitting diode (OLED) display includes a pixelated OLED display panel and a color-correction component disposed on the pixelated OLED display panel. The pixelated OLED display panel has a ratio of blue-to-red color mixing weights at 30 degrees of ?030, and a ratio of blue-to-red color mixing weights at 45 degrees of ?045, where ?045??030?1.05 and 1.5??045?1.1. The color-correction component is configured such that a ratio of blue-to-red color mixing weights at 45 degrees of the display is ?45 and a ratio of blue-to-red color mixing weights at 30 degrees of the display is ?30, where ?045?0.1??45?2.1??045 and ?030?0.05??30?2.05??030. Methods of making OLED displays are described.
    Type: Application
    Filed: April 30, 2024
    Publication date: August 22, 2024
    Inventors: Nicholas C. Erickson, David G. Freier, Robert L. Brott, Bing Hao, David A. Rosen, Stephen M. Menke, Bert T. Chien, Seong Taek Lee, Encai Hao, Zhaohui Yang, Albert I. Everaerts, Yongshang Lu, William Blake Kolb, Keith R. Bruesewitz, Adam D. Haag, Sun-Yong Park, Timothy J. Nevitt (Deceased), Brianna N. Wheeler, Jody L. Peterson, Gilles J. Benoit
  • Publication number: 20140262794
    Abstract: A method for electroplating a wafer detects plating bath failure based on a voltage change. The method is useful in plating wafers having TSV features. Voltage of each anode of a plating processor may be monitored. An abrupt drop in voltage signals a bath failure resulting from conversion of an accelerator such as SPS to it's by products MPS. Bath failure is delayed or avoided by current pulsing or current ramping. An improved plating bath has a catholyte with a very low acid concentration.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Daniel K. Gebregziabiher, John Klocke, Charles Sharbono, Chandru Thambidurai, David J. Erickson
  • Patent number: 7889601
    Abstract: An acoustic transducer array and method of baffle construction is presented to provide an improved array for use in underwater installations. The array is presented wherein a significant majority of the acoustic energy receiving surface is formed by lightweight acoustic baffling material while still maintaining a fully functional, fully populated array. The acoustic baffle constructed is incompressible and suitable for deep water operation while demonstrating both improved acoustic performance and positive buoyancy when necessary. In addition, the invention eliminates the non-uniform element to element spacing that occurs between sub-panels in similar arrays.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: February 15, 2011
    Assignee: Lockheed Martin Corporation
    Inventors: John H. Goodmote, Dane E. Reiner, David J. Erickson
  • Patent number: 7679266
    Abstract: A transducer comprises a longitudinal tubular member symmetrically disposed about a central longitudinal axis, the tubular member having a slot extending from the front end of said member to the rear end of the member, the slot extending parallel to the central longitudinal axis; a stack comprising a single element or plurality of vibratory elements arranged from a first to a second end and; a mounting arrangement for mounting the said stack across the inner wall of said tubular member on a line relatively transverse to said longitudinal central axis. The mounting arrangement includes a layer of solid lubricant engaging opposite ends of the stack, enabling the stack to move in a direction of the central axis when the stack exhibits vibratory motion.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: March 16, 2010
    Assignee: Lockheed Martin Corporation
    Inventors: Raymond Porzio, David J. Erickson, Todd C. Gloo
  • Patent number: 7673831
    Abstract: Embodiments of the invention are directed to an unmanned air vehicle (UAV) system and a small unmanned air vehicle (SUAV) system for deploying and towing a sensor in a tow medium, and to methods related thereto. A UAV-sensor towing package comprises a fixed-wing UAV including a control and signal processing platform, a long range data RF link operably connected to the control and signal processing platform, a UAV wireless data link operably connected to the control and signal processing platform, and a tow body deployment system operably connected to the control and signal processing platform; a tow line attached at an end thereof to the UAV; a tow body attached to another end of the tow line; and a communications link including a transmitter/receiver component coupled to the tow line, and a T/R wireless data transmission link (194) operably connected with the transmitter/receiver component and the UAV wireless data link.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: March 9, 2010
    Assignee: Lockheed Martin Corporation
    Inventors: Daniel W. Steele, John H. Goodemote, David J. Erickson
  • Publication number: 20090224099
    Abstract: Embodiments of the invention are directed to an unmanned air vehicle (UAV) system and a small unmanned air vehicle (SUAV) system for deploying and towing a sensor in a tow medium, and to methods related thereto. A UAV-sensor towing package comprises a fixed-wing UAV including a control and signal processing platform, a long range data RF link operably connected to the control and signal processing platform, a UAV wireless data link operably connected to the control and signal processing platform, and a tow body deployment system operably connected to the control and signal processing platform; a tow line attached at an end thereof to the UAV; a tow body attached to another end of the tow line; and a communications link including a transmitter/receiver component coupled to the tow line, and a T/R wireless data transmission link (194) operably connected with the transmitter/receiver component and the UAV wireless data link.
    Type: Application
    Filed: June 8, 2006
    Publication date: September 10, 2009
    Inventors: Daniel W. Steele, John H. Goodemote, David J. Erickson
  • Publication number: 20090051248
    Abstract: A transducer comprises a longitudinal tubular member symmetrically disposed about a central longitudinal axis, the tubular member having a slot extending from the front end of said member to the rear end of the member, the slot extending parallel to the central longitudinal axis; a stack comprising a single element or plurality of vibratory elements arranged from a first to a second end and; a mounting arrangement for mounting the said stack across the inner wall of said tubular member on a line relatively transverse to said longitudinal central axis. The mounting arrangement includes a layer of solid lubricant engaging opposite ends of the stack, enabling the stack to move in a direction of the central axis when the stack exhibits vibratory motion.
    Type: Application
    Filed: October 31, 2008
    Publication date: February 26, 2009
    Applicant: LOCKHEED MARTIN CORPORATION
    Inventors: Raymond Porzio, David J. Erickson, Todd C. Gloo
  • Publication number: 20080316866
    Abstract: An acoustic transducer array and method of baffle construction is presented to provide an improved array for use in underwater installations. The array is presented wherein a significant majority of the acoustic energy receiving surface is formed by lightweight acoustic baffling material while still maintaining a fully functional, fully populated array. The acoustic baffle constructed is incompressible and suitable for deep water operation while demonstrating both improved acoustic performance and positive buoyancy when necessary. In addition, the invention eliminates the non-uniform element to element spacing that occurs between sub-panels in similar arrays.
    Type: Application
    Filed: June 19, 2007
    Publication date: December 25, 2008
    Inventors: John H. Goodemote, Dane E. Reiner, David J. Erickson
  • Patent number: 7466066
    Abstract: A longitudinally driven slotted transducer has a tubular member with an axial slot extending from one end to the other end. A drive assembly is disposed across the inner wall of the tubular member and supported by journal bearing surfaces extending from opposing sides of the inner wall to locate the drive assembly in a position offset from the longitudinal central axis of the tubular member. The interface between the drive assembly and tubular member comprises a layer of solid lubricant material mounted on the journal bearing type surfaces.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: December 16, 2008
    Assignee: Lockheed Martin Corporation
    Inventors: Raymond Porzio, David J. Erickson, Todd C. Gloo
  • Patent number: 7398690
    Abstract: An acoustic pressure sensor includes a stack of one or more acoustically responsive elements which are contained within a housing. An external acoustic pressure to be sensed is transmitted to the stack via a diaphragm which exists in an end cap closing a top portion of the housing. The outer edge of the diaphragm is in direct contact with the outer edge of the housing. This area enhancement increases the basic sensitivity of the sensing stack without the need of a gap. The diaphragm allows flexure to occur in a controlled fashion. The housing is sealed at the top and bottom by end caps, the top end cap defining a diaphragm area, which diaphragm deflects to thereby apply pressure to the stack to convert acoustic signals into electrical signals.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: July 15, 2008
    Assignee: Lockheed Martin Corporation
    Inventors: David J. Erickson, Walter Chyrywaty, III
  • Patent number: 7005779
    Abstract: An efficient generator of electrical power employs groups of piezoelectric devices disposed in a radial manner about a centrally located cam. The cam, when rotated by a prime mover as a conventional source of mechanical energy, applies a periodic varying force to each piezoelectric device in a suitable sequence. The devices operate to respond to the rotation of the cam by having a cam follower coupled to each device via a spring, whereby a periodically varying force is applied to each piezoelectric device according to the cam surface and based on the rotation of the cam. Each device produces an output voltage according to the force applied to the device via the cam and the coupling between the device and the cam surface. Each device includes a stack of low loss piezoelectric plates connected together and responsive to the application of a mechanical stress to the stack to produce an electrical output.
    Type: Grant
    Filed: June 8, 2004
    Date of Patent: February 28, 2006
    Assignee: Lockheed Martin Corporation
    Inventor: David J. Erickson
  • Patent number: 5515342
    Abstract: The invention relates to a dual frequency sonar transducer assembly which may be operated at low and/or high frequencies in a sonar array. The assembly comprises a low frequency unit of tonpilz design including a low frequency driver, a low frequency tail mass and a composite head mass, the composite head mass acting as a single low frequency water driving piston and comprising a plurality of high frequency units forming individual high frequency water driving pistons. The high frequency units are also of tonpilz design, with independent drivers, independent head masses, and a common tail mass. The use of a common tail mass simplifies the design without compromising high frequency operation. The design leads to more efficient operation at both frequencies by minimizing the head mass to tail mass ratios.
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: May 7, 1996
    Assignee: Martin Marietta Corporation
    Inventors: Cleo M. Stearns, David J. Erickson, Louis M. Izzo
  • Patent number: 5327220
    Abstract: An apparatus and method for testing variations in thicknesses of an optical part comprising an interferometer having a monochromatic light source (laser) which focuses a probe beam into the optical part being tested and detects a standing fringe pattern (Newton Fringes) arising through the interaction of two wavefronts produced by the reflection off the front and back surfaces of the optical part. These fringes may be circular or parallel depending upon the optical power of the probe beam. By observing the expansion and contractions of the interference rings, variations in the thickness of the part can be determined. By counting the number of interference peaks produced at the center of the fringe pattern, during relative movement between the optical part and the beam, a direct measurement of the optical part's thickness variations can be made. The direction of the thickness change is monitored by observing the slope of the intensity variation at the first ring of the interference pattern.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: July 5, 1994
    Assignee: O.C.A. Applied Optics, Inc.
    Inventor: David J. Erickson
  • Patent number: 5237543
    Abstract: A transducer includes an acoustic radiating member for generating acoustic energy in a transmitting medium and a driver member that is pivotally connected to the radiating member. The driver member is for urging movement of the radiating member, wherein such movement generates the energy. Pivoting of the driver member with respect to the radiating member relieves predetermined stress in the driver member. The radiating member may include, for example, a flat element such as a bar, plate or disk, or an I-shaped element. The driver element may include an electroactive material. The driver element may be connected to the radiating element by support apparatus that is fixedly coupled to the radiating element includes a screw having a predeterminedly contoured end that engages a complimentarily contoured recess connected to the driver element for permitting the pivoting. When the support apparatus includes a screw it may be adjusted for supplying a predetermined force on the driver element.
    Type: Grant
    Filed: April 16, 1992
    Date of Patent: August 17, 1993
    Assignee: General Electric Company
    Inventors: David J. Erickson, Robert T. Winnicki, Louis M. Izzo
  • Patent number: 5204844
    Abstract: A transducer includes a first and second spaced apart member, each member having a radiating surface for producing a wave of energy in a transmitting medium in response to a driving force, a plurality of containment devices coupled to each member and extending outwardly beyond at least one radiating surface for communicating the driving force to each member, and a corresponding plurality of driving devices respectively disposed within the containment devices for generating the driving force in response to a change in a predetermined dimension of the driving device. The distance between the members and corresponding distance between the radiating surfaces may be reduced for increasing the bandwidth of the transducer, while the length of the containment device may be increased for accommodating the driving devices in order to maintain a constant driving force. A method for selecting the bandwidth of operation of a transducer is also described.
    Type: Grant
    Filed: February 6, 1992
    Date of Patent: April 20, 1993
    Assignee: General Electric Company
    Inventor: David J. Erickson
  • Patent number: 4842530
    Abstract: An electrical floating bond comprising a slotted bolt coupled, preferably by an integral rivet, to one end of a short wire. The bolt is slotted along a threaded portion of the bolt for receiving a cable or cables with an exposed conductive sheath. A ring nut clamps a cable or cables in the slotted bolt.
    Type: Grant
    Filed: January 28, 1988
    Date of Patent: June 27, 1989
    Assignee: The Dexter Corporation
    Inventors: David J. Erickson, II, Michael G. Naylor, Robert R. Knobloch
  • Patent number: 3972018
    Abstract: An electromechanical transducer employing an arcuate piezoelectric shell element having lateral edges affixed to a restraining member wherein stresses produced in the element by electrical energy produce element flexural vibrations. The piezoelectric shell element and restraining member are located within a chamber defined by a boot and rigid end caps attached to the restraining member. Hydraulic fluid within the transducer chamber equalizes pressures upon the shell element functioning as an acoustic coupling and as a pressure equalizer. In an embodiment of the invention a pair of piezoelectric shell elements are attached to opposite sides of a planar restraining plate.
    Type: Grant
    Filed: August 10, 1972
    Date of Patent: July 27, 1976
    Assignee: Sparton Corporation
    Inventor: David J. Erickson
  • Patent number: D267519
    Type: Grant
    Filed: October 27, 1980
    Date of Patent: January 11, 1983
    Inventor: David J. Erickson