Patents by Inventor John B. Ripingale

John B. Ripingale 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 and apparatus for providing a spiraled radial magnetic identifier for locating non-metallic linear objects
    Patent number: 6084495
    Abstract: An apparatus for radially magnetizing ceramic ferrite in a non-conductive pipe in a lengthwise pattern. The apparatus having two oppositely polarized fixed magnetis, each having an arcuate shaped side facing each other to form a generally circuilar opening. A movable magnet disposed within the generally circular opening having a size and shape to fit within the opening and forming an annular space therebetween. The movable magnet only being restrained by a magnetic field generated across the generally circular opening. Means are included to maintain the movable magnet apart from the fixed magnets.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: July 4, 2000
    Inventor: John B. Ripingale