Patents by Inventor David Daunell

David Daunell 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).

  • Hand held pipe bending calculator
    Patent number: 6648219
    Abstract: A mechanical annular hand held pipe bend calculator that enables a worker to calculate the angle of bend necessary for pipe given the distance between bends and the depth of offset or saddle; or to calculate the depth of offset or saddle, if given the angle of bend and the distance between bends; or to calculate the distance between bends, given the angle of bend and the dept of offset or saddle. The calculator also enables the worker to quickly calculate the amount of shrink or take up caused by having to bend pipe between two points.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: November 18, 2003
    Inventor: David Daunell