Patents by Inventor Wallace L. Smith

Wallace L. Smith 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).

  • Centrifugal pump improvement
    Patent number: 4462751
    Abstract: A centrifugal pump assembly comprising one or more bowl castings each housing an impeller and also two or more individual fluid passageways for the flow of fluid discharged by an impeller to the next impeller, the passageways having some exterior walls defining the exterior of the assembly. By changing the number of the individual passageways, the specific speed of the pump, i.e., the ratio of the amount of energy imparted to the fluid and the amount of fluid being pumped, can be changed.
    Type: Grant
    Filed: March 24, 1982
    Date of Patent: July 31, 1984
    Assignee: Borg-Warner Corporation
    Inventors: Wallace L. Smith, Randal S. Ferman