Patents by Inventor Herman A. Schouten

Herman A. Schouten 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).

  • Blowback operated fluid valve
    Patent number: 5224684
    Abstract: A valve for controlling fluid flow is provided, which permits fluid flow through the valve upon a first exposure to incident light, and prevents fluid flow through the valve upon a second exposure to incident light. The valve includes inlet and outlet passageways that are adapted to divert a portion of the fluid away from a central passageway to shift a plunger between a first position and a second position. In the first position, the plunger permits fluid flow through the valve, and in the second position, the plunger prevents fluid flow through the valve.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: July 6, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Herman A. Schouten