Patents by Inventor Joseph V. Chatigny

Joseph V. Chatigny 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: 5486820
    Abstract: A traffic sensor including piezoelectric sensors having different polarities in different lanes of the roadway so that traffic data for different lanes of a roadway may be discriminated from the polarity of the received signal(s). Preferably, the piezoelectric sensors are formed by splicing oppositely polarized piezoelectric cables or films, by changing the applied electric field during manufacture so that adjacent portions of a piezoelectric cable or film have different polarities, or by applying an electric field of a reversed polarity to respective longitudinal sections of a piezoelectric film. Traffic data from up to 8 different lanes of traffic may be discriminated using only two piezoelectric sensors in accordance with the invention by providing unique combinations of output polarities for deflections of the piezoelectric sensors in the different lanes.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: January 23, 1996
    Assignee: The Whitaker Corporation
    Inventors: Joseph V. Chatigny, Mitchell Thompson, Peter F. Radice, Donald L. Halvorsen
  • Patent number: 5153859
    Abstract: A method of forming a laminated piezoelectric structure is disclosed wherein a plurality of polarized piezoelectric films of vinylidene fluoride and trifluoroethylene are solvent welded together. The solvent welding solution comprises a copolymer of vinylidene fluoride and trifluoroethylene and a suitable solvent. The transducers produced from such a laminated structure are also disclosed.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: October 6, 1992
    Assignee: Atochem North America, Inc.
    Inventors: Joseph V. Chatigny, Kumar Ogale, Lewis F. Brown, Joseph F. Yaskowski
  • Patent number: 4954811
    Abstract: A penetration sensor is disclosed which contains first and second transducers sandwiched around a layer which capacitively isolates the individual transducers. This sensing arrangement allows for the operational state of the sensor to be tested by applying an interrogation signal to each of the transducers.
    Type: Grant
    Filed: November 29, 1988
    Date of Patent: September 4, 1990
    Assignee: Pennwalt Corporation
    Inventors: Joseph V. Chatigny, Peter R. Smith