Patents by Inventor William Eugene Stevens

William Eugene Stevens 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).

  • Irrigation signaling device
    Patent number: 5825295
    Abstract: A device for signaling a predetermined soil moisture condition includes a switching tensiometer that closes a switch when the root water tension reaches a predetermined level; a power source connected to the switching tensiometer; and a signal connected to the switching tensiometer so that when the switching tensiometer closes the switch, power source is connected to the signal operate the signal to indicate that the predetermined soil moisture condition has been reached. The signal preferably includes a spring-loaded flag that operates between a retracted position and an extended signal position; a latch for releasably securing the flag in its retracted position, and an electrically operated release that releases the latch to allow the flag to operate to its extended signal position.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: October 20, 1998
    Assignee: The Curators of the University of Missouri
    Inventors: William Walter Casady, William Eugene Stevens