Patents by Inventor Richard L. Lopushansky

Richard L. Lopushansky 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).

  • Differential pressure transducer with Fabry-Perot fiber optic displacement sensor
    Patent number: 7134346
    Abstract: A differential pressure transducer which incorporates a Fabry-Perot sensor for direct quantitative measurements of the distance displaced by a piston abutting two pressure boundaries is described. The apparatus includes a piston with an annular protrusion which is fitted into a transducer housing having a peripheral groove that serves as a stop to prevent damage to the in overpressure situations. A method of measuring differential pressure using a Fabry-Perot sensor is also contemplated.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: November 14, 2006
    Assignee: Davidson Instruments Inc.
    Inventors: Richard L. Lopushansky, John W. Berthold