Patents by Inventor Ralph E. Lingert

Ralph E. Lingert 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).

  • Water-borne craft having mix tank or the like movable between elevated and lowered positions
    Patent number: 3942457
    Abstract: A water-borne craft is supported by laterally spaced pontoons, wherein an open-topped receptacle mounted in the open space between the pontoons is movable between a fully elevated position wherein the bottom of the receptacle is at or above the water line of the craft and a fully lowered position wherein the bottom of the receptacle is submerged beneath the water line and the open top of the receptacle is above the water line. Water and materials are introduced into and mixed in the receptacle when in a fully lowered position, after which the mixture is pumped from the receptacle and discharged under pressure through a nozzle.
    Type: Grant
    Filed: May 20, 1974
    Date of Patent: March 9, 1976
    Assignee: The Finn Equipment Company
    Inventors: Richard E. Keyes, Ralph E. Lingert