Patents by Inventor John A. Kolson

John A. Kolson 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).

  • Patent number: 6240735
    Abstract: A rotary damper assembly for controlling the flow of a fluid includes inner and outer hollow cylinders, each having one or more side wall apertures, the inner cylinder being nested within the outer cylinder in a manner to permit relative axial rotation of the cylinders about a common longitudinal axis, the inner cylinder receiving the fluid flow at an axial inlet, and the flow of fluid through the assembly being proportional to the degree of alignment of the cylinder apertures.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: June 5, 2001
    Assignee: Robertshaw Controls Company
    Inventors: John A. Kolson, Robert W. Starenchak, Douglas C. Lanz