Patents by Inventor Wallace W. Ericson

Wallace W. Ericson 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).

  • Split impeller centrifugal pump
    Patent number: 4688987
    Abstract: A centrifugal pump having a split impeller which is directly mounted to an existing drive shaft and which is enclosed within a housing which is mounted in surrounding, spaced and non-contacting relationship with respect to the impeller and drive shaft so as to form annular fluid inlet openings between the housing and drive shaft through which fluids are directed by the impeller to an outlet from the housing.
    Type: Grant
    Filed: February 22, 1985
    Date of Patent: August 25, 1987
    Inventors: Wallace W. Ericson, Steven Ericson