Patents by Inventor Harold L. Woodruff

Harold L. Woodruff 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).

  • Solenoid operated valve with solenoid wattage adjustment means
    Patent number: 4834337
    Abstract: A solenoid operated poppet valve having an armature carrying a poppet valve seal which seats on a poppet valve seat on a movable poppet valve seat member, and the poppet valve seat member is axially adjustable for adjusting the stroke of the solenoid armature to adjust the solenoid wattage required for moving the armature through its operating stroke.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: May 30, 1989
    Assignee: William J. Chorkey
    Inventors: William J. Chorkey, Harold L. Woodruff