Patents by Inventor James B. Dron

James B. Dron 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).

  • Submerged pump assembly and method of making and using same
    Patent number: 4492514
    Abstract: A method and means for providing a protective environment for submerged pumps are described. For a submerged water pump a shell or casing is installed to enclose at least a lower portion of the pump, and a protective fluid medium, typically compressed air, is introduced in the shell to exclude water from contacting the pump operating components or lines when the pump is not in use. Means are provided for quickly removing the protective medium and permitting water to enter the pump when it is desired to put the pump into operation.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: January 8, 1985
    Assignee: Stang Hydronics Inc.
    Inventor: James B. Dron