Patents by Inventor Renaldo Mercaldi

Renaldo Mercaldi 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).

  • Rotary seal for vacuum and pressure systems
    Patent number: 4114903
    Abstract: A rotary seal device for pressurized gas and vacuum pumping systems comprising an annular member coaxially mounted on the end of a hollow rotary shaft and having a spring-loaded carbon face pressing against a ceramic disc secured in coaxial alignment with the end of a stationary pipe fitting within a housing member having a threaded end cap for adjusting the pressure between the carbon face and ceramic disc.
    Type: Grant
    Filed: August 15, 1977
    Date of Patent: September 19, 1978
    Assignee: GTE Sylvania Incorporated
    Inventors: Robert J. Bovio, Renaldo Mercaldi
  • Signal device using percussive flashlamps
    Patent number: 4055759
    Abstract: A signal device comprising a partially transparent package containing a plurality of percussively-ignitable flashlamps arranged in an array with respectively associated preenergized striker springs, and a movable member for sequentially releasing the striker springs to fire respective flashlamps in response to successive indexing. The device is adapted to be hand held and the movable member is adapted to be actuated and indexed directly by hand.
    Type: Grant
    Filed: June 14, 1976
    Date of Patent: October 25, 1977
    Assignee: GTE Sylvania Incorporated
    Inventors: Andre C. Bouchard, Harold H. Hall, Jr., Renaldo Mercaldi, Thomas J. Sentementes