Patents by Inventor Daniel S. Johnson

Daniel S. Johnson 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: 9028354
    Abstract: A hydraulic motor/pump regenerator system for recovering energy from the moving vehicle having high efficiency and precise control, thereby allowing the maximum amount of energy to be recovered and reused, is described. Three, fixed-displacement pump/motors are used to enable the system to recover and reapply energy at efficiencies expected to be above 70% in most circumstances. The invention is not limited to the use of three fixed displacement hydraulic units since using more units may in some drive cycles further improve efficiency. By selecting an appropriate combination of pump/motor units for providing the driveshaft torque required by the driver, embodiments of the present invention generate high recovery efficiency at any speed.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: May 12, 2015
    Assignee: Lighting Hybrids
    Inventors: Daniel S. Johnson, D. Jude Hueber, Jr., Jonathan L. Reynolds
  • Patent number: 8857167
    Abstract: An integral accumulator/reservoir system including a low pressure vessel having a low-pressure vessel wall defining a low-pressure vessel cavity; a high-pressure accumulator having a high-pressure accumulator wall defining a high-pressure accumulator cavity, the high-pressure accumulator being disposed in the low-pressure vessel cavity, the high-pressure accumulator wall including an aluminum layer; a flexible bladder, the flexible bladder being disposed in the high-pressure accumulator cavity; and a sensor module operably connected to the aluminum layer.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: October 14, 2014
    Assignee: Steelhead Composites
    Inventors: Daniel S. Johnson, Kenneth E. Netzel, Daniel Jude Hueber, Christopher A. Pennekamp, Jonathan L. Reynolds
  • Publication number: 20140087916
    Abstract: A hydraulic motor/pump regenerator system for recovering energy from the moving vehicle having high efficiency and precise control, thereby allowing the maximum amount of energy to be recovered and reused, is described. Three, fixed-displacement pump/motors are used to enable the system to recover and reapply energy at efficiencies expected to be above 70% in most circumstances. The invention is not limited to the use of three fixed displacement hydraulic units since using more units may in some drive cycles further improve efficiency. By selecting an appropriate combination of pump/motor units for providing the driveshaft torque required by the driver, embodiments of the present invention generate high recovery efficiency at any speed.
    Type: Application
    Filed: March 5, 2013
    Publication date: March 27, 2014
    Inventors: Daniel S. Johnson, D. Jude Hueber, JR., Jonathan L. Reynolds
  • Publication number: 20120017578
    Abstract: Embodiments relate to systems and methods for transferring power from a vehicle drive train to a hydraulic pump. One aspect of the present invention provides system including a torque converter; a torque converter hub connected to at least the torque converter; and a synchronous drive system coupled to at least the torque converter.
    Type: Application
    Filed: March 7, 2011
    Publication date: January 26, 2012
    Inventors: Daniel S. Johnson, Kenneth E. Netzel, Daniel Jude Hueber, Christopher A. Pennekamp, Jonathan L. Reynolds
  • Publication number: 20110219761
    Abstract: An integral accumulator/reservoir system including a low pressure vessel having a low-pressure vessel wall defining a low-pressure vessel cavity; a high-pressure accumulator having a high-pressure accumulator wall defining a high-pressure accumulator cavity, the high-pressure accumulator being disposed in the low-pressure vessel cavity, the high-pressure accumulator wall including an aluminum layer; a flexible bladder, the flexible bladder being disposed in the high-pressure accumulator cavity; and a sensor module operably connected to the aluminum layer.
    Type: Application
    Filed: March 7, 2011
    Publication date: September 15, 2011
    Inventors: Daniel S. Johnson, Kenneth E. Netzel, Daniel Jude Hueber, Christopher A. Pennekamp, Jonathan L. Reynolds
  • Patent number: 7204208
    Abstract: A robotic apparatus for the cleaning and maintenance of coal fired boilers, which is designed to operate in the high temperature environment of the combustion gasses to effectively clean and remove slag deposits of the boiler heat transfer surfaces by use of a precision directed, low pressure, low flow rate water stream. The robotic cleaning apparatus is comprised of lightweight carbon fiber structural elements, attached to the exterior of the boiler, and cooled by annular pressurized water sheaths impingent on a thin metal skin covering the lightweight structural elements. Multiple articulated joints allow for complete access to the heat transfer surfaces of the boiler. A variety of payloads can be delivered to specific points within the boiler, including imaging systems, cutting, and welding apparatuses. A mathematical state space control matrix allows for optimal positioning and feedback control of motions.
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: April 17, 2007
    Assignee: S.A. Robotics
    Inventors: Samuel A. Johnson, Daniel S. Johnson
  • Patent number: 5665972
    Abstract: A method for measuring the fixed contamination level in a confined area such as small diameter pipe. The method measures the accumulated detection response over a given area and prescribed time period. To obtain the measurement a plurality of sensors are connected in tandem to form a flexible detector string and remotely positioned within the area to be monitored. The measurement is correlated to a standard obtained by using a known source in a simulated mockup environment. In one embodiment a passive monitor such as a Thermo-Luminescence Dosimeter is employed as the sensor.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: September 9, 1997
    Assignee: Westinghouse Electric Corporation
    Inventors: Jeffrey W. Dickinson, Charles G. Hudson, Daniel S. Johnson, Richard McGinley, Richard J. Sexton