Patents by Inventor Ralph Johnston

Ralph Johnston 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: 20230201454
    Abstract: The present disclosure relates to an improved implantable drug delivery device, method, and system that is powered by compression and expansion of an inert gas contained within a compressible bellows and surrounded by a biocompatible housing that forms a reservoir which is connected to restricted channel for flow rate control and further connected to a flexible reinforced catheter that delivers medicants from the reservoir to the intrathecal space or other desired bodily tissue.
    Type: Application
    Filed: May 29, 2021
    Publication date: June 29, 2023
    Inventors: RALPH JOHNSTON, PAUL FENTON, DOUG FRANTZ, DANIEL PORTILLO, SAKETH RAM, ROBERT LYLE HOOD
  • Publication number: 20050099009
    Abstract: A power module is connected to the starter, alternator, and battery for an internal combustion engine. The power module includes one or more capacitors and delay timer. When the ignition switch closes, the battery of the starting system provides current to the starter motor, causing the starter solenoid to close the starter contacts, and bring a starter pinion gear into engagement with a flywheel ring gear. The delay timer does not allow the capacitor to immediately deliver current to the starter motor, but implements a short delay before the capacitor's current is released to the starter motor. This short delay increases the chance for full engagement between the starter pinion and the flywheel ring gear, thereby reducing the likelihood of milling when the starter motor provides torque to the starter pinion.
    Type: Application
    Filed: November 10, 2004
    Publication date: May 12, 2005
    Applicant: Remy, Inc.
    Inventors: James Spellman, David Fulton, Ralph Johnston
  • Publication number: 20050003710
    Abstract: A power module is connected to the starter, and generator of a motor vehicle. The power module is housed in a casing made of an insulative material. The power module includes a capacitor and an isolation circuit. The capacitor is connected to the starter when the ignition switch is closed to provide cranking current to the starter. The isolation circuit allows current to flow from the battery to the capacitor, but prevents current flow in the opposite direction. The capacitor is quickly recharged when the engine reaches an increased speed. Therefore, the capacitor is available to provide cranking current to a vehicle even when the vehicle repeatedly stops and starts over a short period of time.
    Type: Application
    Filed: July 2, 2004
    Publication date: January 6, 2005
    Applicant: Delco Remy America, Inc.
    Inventors: Christopher Congdon, Ralph Johnston, David Fulton
  • Patent number: 6362544
    Abstract: A powdered magnetic material stator core with embedded stator windings and a method for its manufacture. Embedding the windings within a radially compacted powdered magnetic material stator core enables equivalent or better electromagnetic performance in a significantly reduced size. Radial compaction of the powdered magnetic material minimizes the distortion of the stator windings during compaction.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: March 26, 2002
    Assignee: Delco Remy International, Inc.
    Inventors: Ralph Johnston, Chahee Peter Cho, Ronald A. Martin
  • Publication number: 20020005675
    Abstract: A powdered magnetic material stator core with embedded stator windings and a method for its manufacture. Embedding the windings within a radially compacted powdered magnetic material stator core enables equivalent or better electromagnetic performance in a significantly reduced size. Radial compaction of the powdered magnetic material minimizes the distortion of the stator windings during compaction.
    Type: Application
    Filed: April 30, 2001
    Publication date: January 17, 2002
    Inventors: Ralph Johnston, Chahee Peter Cho, Ronald A. Martin
  • Patent number: 6232681
    Abstract: A powdered magnetic material stator core with embedded stator windings and a method for its manufacture. Embedding the windings within a radially compacted powdered magnetic material stator core enables equivalent or better electromagnetic performance in a significantly reduced size. Radial compaction of the powdered magnetic material minimizes the distortion of the stator windings during compaction.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: May 15, 2001
    Assignee: Delco Remy International, Inc.
    Inventors: Ralph Johnston, Ronald A. Martin, Chahee Peter Cho