Patents by Inventor Owen E. Stiegelmeier

Owen E. Stiegelmeier 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).

  • Heavy duty impeller
    Patent number: 4322200
    Abstract: A fabricated, heavy duty centrifugal pump impeller wherein the relatively heavy gauge shrouds are formed by plastic deformation such as by metal spinning, stretch forming or hydroforming. The hub is similarly formed and a plurality or regularly circumferentially spaced spiral vanes extend axially therebetween so that when the hub, blades and shroud are joined by welding or brazing, there is formed a heavy duty impeller having an axially extending inlet and a radially extending annular outlet. Following the fabrication, the impeller is finished and metallized.
    Type: Grant
    Filed: May 7, 1979
    Date of Patent: March 30, 1982
    Inventor: Owen E. Stiegelmeier
  • Heavy duty impeller and method of fabricating the same
    Patent number: 4155151
    Abstract: A fabricated, heavy duty centrifugal pump impeller wherein the relatively heavy gauge shrouds are formed by plastic deformation such as by metal spinning, stretch forming or hydroforming. The hub is similarly formed and a plurality or regularly circumferentially spaced spiral vanes extend axially therebetween so that when the hub, blades and shroud are joined by welding or brazing, there is formed a heavy duty impeller having an axially extending inlet and a radially extending annular outlet. Following the fabrication, the impeller is finished and metallized.
    Type: Grant
    Filed: August 31, 1977
    Date of Patent: May 22, 1979
    Inventor: Owen E. Stiegelmeier