Patents by Inventor Robert David Hall

Robert David Hall 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).

  • Soft-start systems and methods for vehicle starters
    Patent number: 8669835
    Abstract: Soft-start systems and methods for vehicle starters are provided. Embodiments provide a solenoid including: a first coil that receives power when an ignition switch is closed; a first plunger actuated when the first coil receives power; a first terminal configured to be abutted by a contact bar of the first plunger; a second coil that receives power when the contact bar of the first plunger abuts the first terminal; a second plunger actuated when the second coil receives power; and a second terminal configured to be abutted by a contact bar of the second plunger. Such a solenoid is configured to provide power at a first level to an attached motor when the contact bar of the first plunger abuts the first terminal and at a second level that is higher than the first level when the contact bar of the second plunger abuts the second terminal.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: March 11, 2014
    Assignee: Prestolite Electric Inc.
    Inventors: Aleksandar Hrnjak, James David Plenzler, Robert David Hall, Clive Harley
  • SOFT-START SYSTEMS AND METHODS FOR VEHICLE STARTERS
    Publication number: 20130285772
    Abstract: Soft-start systems and methods for vehicle starters are provided. Embodiments provide a solenoid including: a first coil that receives power when an ignition switch is closed; a first plunger actuated when the first coil receives power; a first terminal configured to be abutted by a contact bar of the first plunger; a second coil that receives power when the contact bar of the first plunger abuts the first terminal; a second plunger actuated when the second coil receives power; and a second terminal configured to be abutted by a contact bar of the second plunger. Such a solenoid is configured to provide power at a first level to an attached motor when the contact bar of the first plunger abuts the first terminal and at a second level that is higher than the first level when the contact bar of the second plunger abuts the second terminal.
    Type: Application
    Filed: June 26, 2013
    Publication date: October 31, 2013
    Inventors: Aleksandar Hrnjak, James David Plenzler, Robert David Hall, Clive Harley
  • Soft-start systems and methods for vehicle starters
    Patent number: 8476997
    Abstract: Soft-start systems and methods for vehicle starters are provided. Embodiments provide a solenoid including: a first coil that receives power when an ignition switch is closed; a first plunger actuated when the first coil receives power; a first terminal configured to be abutted by a contact bar of the first plunger; a second coil that receives power when the contact bar of the first plunger abuts the first terminal; a second plunger actuated when the second coil receives power; and a second terminal configured to be abutted by a contact bar of the second plunger. Such a solenoid is configured to provide power at a first level to an attached motor when the contact bar of the first plunger abuts the first terminal and at a second level that is higher than the first level when the contact bar of the second plunger abuts the second terminal.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: July 2, 2013
    Assignee: Prestolite Electric, Inc.
    Inventors: Aleksandar Hrnjak, James David Plenzler, Robert David Hall, Clive Harley
  • SOFT-START SYSTEMS AND METHODS FOR VEHICLE STARTERS
    Publication number: 20120139677
    Abstract: Soft-start systems and methods for vehicle starters are provided. Embodiments provide a solenoid including: a first coil that receives power when an ignition switch is closed; a first plunger actuated when the first coil receives power; a first terminal configured to be abutted by a contact bar of the first plunger; a second coil that receives power when the contact bar of the first plunger abuts the first terminal; a second plunger actuated when the second coil receives power; and a second terminal configured to be abutted by a contact bar of the second plunger. Such a solenoid is configured to provide power at a first level to an attached motor when the contact bar of the first plunger abuts the first terminal and at a second level that is higher than the first level when the contact bar of the second plunger abuts the second terminal.
    Type: Application
    Filed: September 2, 2011
    Publication date: June 7, 2012
    Inventors: Aleksandar Hrnjak, James David Plenzler, Robert David Hall, Clive Harley
  • Method of plant tissue culture and regeneration
    Patent number: 5969215
    Abstract: Plants may be regenerated from stomatal cells or protoplasts of such cells. Prior to regeneration the cells or protoplasts may be genetically transformed by the introduction of hereditary material most preferably by a DNA construct which is free of genes which specify resistance to antibiotics. The regeneration step may include callus formation on a hormone-free medium. The method is particularly suitable for sugar beet.
    Type: Grant
    Filed: March 14, 1996
    Date of Patent: October 19, 1999
    Assignee: Zeneca Limited
    Inventors: Robert David Hall, Franciscus Andries Krens, Henricus Adrianus Verhoeven, Maria Colijn-Hooymans, James Martin Dunwell, Guy Weyens