Patents by Inventor William N. Gardner

William N. Gardner 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).

  • Method of and apparatus for determining the position of a movable member
    Patent number: 4590963
    Abstract: The position of a valve member is sensed by a transducer mounted on the exterior of the valve housing. The transducer is connected to a passive circuit located within an enclosure mounted on or adjacent to the valve housing. The passive circuit, when connected to a source of electrical power, provides a signal commensurate with the output of the transducer and an encoded signal which identifies the valve. The information contained in these signals is transmitted to a remote location, decoded and employed to determine the existance of a valve member position error.
    Type: Grant
    Filed: April 3, 1985
    Date of Patent: May 27, 1986
    Assignee: Combustion Engineering Co., Inc.
    Inventors: William N. Gardner, Kenneth R. Rohde