Patents by Inventor Michael L. Linsdau

Michael L. Linsdau 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).

  • Flexible impeller apparatus and method
    Patent number: 8157510
    Abstract: Embodiments of the invention provide an impeller assembly having a flexible impeller and a method of replacing a removable drive mechanism. The impeller assembly includes an impeller having an outer portion defining a substantially cylindrical shape, at least one flexible blade extending radially outward from the outer portion, and a first bore extending a first axial length. The impeller assembly also includes a tubular insert supported at least partially within the first bore. The tubular insert has a second bore defining a substantially cylindrical shape with a first radial distance from an axis passing through the center of the impeller, and a key portion radially extending from the second bore. The key portion defines a second radial distance from the axis larger than the first radial distance.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: April 17, 2012
    Assignee: Sta-Rite Industries, LLC
    Inventors: Patrick A. Bear, Matthew A. Cottrell, Michael L. Linsdau, David G. Vensland
  • Flexible Impeller Apparatus and Method
    Publication number: 20090180879
    Abstract: Embodiments of the invention provide an impeller assembly having a flexible impeller and a method of replacing a removable drive mechanism. The impeller assembly includes an impeller having an outer portion defining a substantially cylindrical shape, at least one flexible blade extending radially outward from the outer portion, and a first bore extending a first axial length. The impeller assembly also includes a tubular insert supported at least partially within the first bore. The tubular insert has a second bore defining a substantially cylindrical shape with a first radial distance from an axis passing through the center of the impeller, and a key portion radially extending from the second bore. The key portion defines a second radial distance from the axis larger than the first radial distance.
    Type: Application
    Filed: October 22, 2008
    Publication date: July 16, 2009
    Inventors: Patrick A. Bear, Matthew A. Cottrell, Michael L. Linsdau, David G. Vensland