Patents by Inventor Darwin D. Smith

Darwin D. Smith 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: 8148948
    Abstract: Provided herein is a controller for a low voltage disconnect (LVD), a method of protecting and providing a maximum or substantially maximum battery reserve coupled to a DC load bus and a power system manager. In one embodiment, the LVD controller includes an adaptive disconnect system configured to determine a variable LVD threshold voltage value and instruct the LVD to disconnect a battery reserve from a DC load bus based thereon. The variable LVD threshold voltage is determined based on a current of the battery reserve during a battery-discharge event.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: April 3, 2012
    Assignee: Lineage Power Corporation
    Inventors: Roy J. Davis, Darwin D. Smith
  • Publication number: 20100231170
    Abstract: Provided herein is a controller for a low voltage disconnect (LVD), a method of protecting and providing a maximum or substantially maximum battery reserve coupled to a DC load bus and a power system manager. In one embodiment, the LVD controller includes an adaptive disconnect system configured to determine a variable LVD threshold voltage value and instruct the LVD to disconnect a battery reserve from a DC load bus based thereon. The variable LVD threshold voltage is determined based on a current of the battery reserve during a battery-discharge event.
    Type: Application
    Filed: March 13, 2009
    Publication date: September 16, 2010
    Applicant: Lineage Power Corporation, A Nevada Corporation
    Inventors: Roy J. Davis, Darwin D. Smith
  • Patent number: 7432046
    Abstract: The present invention relates to methods of determining anti-infectious agent IgG avidity, for example, human anti-cytomegalovirus and human anti-toxoplasma IgG avidity, using a competitive assay format.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: October 7, 2008
    Assignee: Abbott Laboratories
    Inventors: Gregory T. Maine, Stephen C. Hsu, Darwin D. Smith, Dominick L. Pucci, Jörg Herzogenrath, Ingo Curdt, Heike Maria Christ