Patents by Inventor Donald K. Lucas

Donald K. Lucas 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: 20240093663
    Abstract: A DC power plant generating DC power from a variety of engines including a Stirling cycle engine. The DC power plant includes a relatively small start-up power source that is discontinued after the engine is running. A method for producing DC power for a load including starting up an engine using power supplied by a relatively small power supply supplemented by a capacitor bank, providing output from the engine to a generator, producing alternating current (AC) power by the generator, converting the AC power to direct current (DC) power, disabling output of the DC power during a first set of pre-selected conditions, limiting a rate of change of current of the DC power during a second set of pre-selected conditions, reducing conducted and radiated emissions of the DC power, disconnecting the DC power from the load under a third set of pre-selected conditions, and providing the DC power to the load.
    Type: Application
    Filed: November 20, 2023
    Publication date: March 21, 2024
    Inventors: Andrew A. Schnellinger, James R. Lowell, Bryan A. Finseth, Christopher L. Barber, Jason M. Sachs, Donald J. Lucas, Shannon Prescott, Jeffrey W. Kite, Andras K. Fekete, Douglas R. Adams
  • Patent number: 4328916
    Abstract: A fishing tackle accessory for fisherman to keep fish alive in the water includes a plastic circular ring having peripherally spaced-apart pins, each with a snap hook swiveled thereto to hold the fish attached thereto. The ring includes a diametrically extending bar or handle, having a central opening. The snap hooks are movable at the free loop ends thereof into substantial alignment with the central opening such that a rope can pass through the loop ends of the snap hooks collectively holding the snap hooks together and in compact flat positioning when carrying the fish ringer. A snap clip on one end of the rope permits securing thereof to the wrist of an individual using the same or securing thereof to a post, eyelet or loop end of a bolt fastening member of a landing dock, fishing pier or boat.
    Type: Grant
    Filed: February 14, 1980
    Date of Patent: May 11, 1982
    Inventor: Donald K. Lucas