Patents by Inventor Joseph Pignone

Joseph Pignone 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).

  • Dual buoyancy device
    Patent number: 4286539
    Abstract: A dual buoyancy device having two external dimensions, in the smaller of which, one end is closed by an elastic sheet undistended, and in the greater of which the sheet is distended from its normal position thereby increasing the external dimension of the device; the distention of the sheet is accomplished by a thruster member bearing on the sheet which thruster is impelled by a weight and lever system actuated by gravity, which causes the thruster to distend the sheet.
    Type: Grant
    Filed: October 18, 1979
    Date of Patent: September 1, 1981
    Inventor: Joseph Pignone