Patents by Inventor Per E. Strinning

Per E. Strinning 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).

  • Housing for a vortex-flow type pump
    Patent number: 5486092
    Abstract: Upper and lower housing portions combine to define a fluid-working area within the housing, and the portions are dissimilar. The lower housing portion is substantially circular, having a constant radius, whereas the upper housing portion is volute-shaped, having an increasingly extending radius and a continuously growing depth, in the direction of the outlet. Correspondingly, the lower housing portion has a continuously diminishing depth, in the direction of the outlet.
    Type: Grant
    Filed: October 3, 1994
    Date of Patent: January 23, 1996
    Assignee: ITT Flygt Ab
    Inventors: Torolf Borg, Per E. Strinning