Patents by Inventor Peter Joseph Kielhofner

Peter Joseph Kielhofner 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).

  • Manifold valve position indicator and operator alerting system
    Patent number: 6681791
    Abstract: Valve assembly comprising a valve base, a valve bonnet attached thereto, a rotatable valve stem extending coaxially through the valve bonnet, a rotatable valve handle attached to the valve stem and having a plane of rotation which is generally perpendicular to the axis of the valve stem, and an indicator tab attached to the valve base or the valve bonnet and extending outward from the valve body or valve bonnet in a direction generally parallel to the plane of rotation of the valve handle. The rotatable valve handle can be disposed in at least a first position and a second position, wherein the rotatable handle when disposed in the first position renders the indicator tab invisible when viewed in a direction generally perpendicular to the plane of rotation of the valve handle, and wherein the rotatable handle when disposed in the second position renders the indicator tab visible when viewed in a direction generally perpendicular to the plane of rotation of the valve handle.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: January 27, 2004
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Stephen Chorney, Richard Linton Samsal, Stanley Louis Morton, Peter Joseph Kielhofner, Todd Jeffrey Siegfried, Thomas Anderson