Patents by Inventor Jonathan Brent Fraser

Jonathan Brent Fraser 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).

  • Jaw assembly for gripping pipes
    Publication number: 20120137834
    Abstract: A jaw assembly for a power tong or back-up tong is provided with a jaw die plate and a die seating surface that are shaped to permit radial insertion of the die plate (7) onto its seating surface (2). Both vertical (4) and horizontally (6) aligned splines, or spline segments are present on the seating surface. The vertical splines are interrupted along on at the end of their lengths by gaps (5a). Grooves (11) along with the protrusions (10) on the mating surface of the die plate interfit between the splines and/or spline segments and gaps to stabilize, or anchor the die plate on the seating surface against vertical displacement and to absorb rotational torque forces. The portion of the protrusions on the die plate that are positioned to extend into the gaps in the vertical splines support the die plate against vertical shearing forces, resisting disengagement of the die plate from its seating surface.
    Type: Application
    Filed: May 1, 2003
    Publication date: June 7, 2012
    Inventors: Dan Dagenais, Jonathan Brent Fraser, Leslie L. Szalacsi, Hermann Basler
  • JAW ASSEMBLY FOR GRIPPING PIPES
    Publication number: 20030205111
    Abstract: A jaw assembly for a power tong or back-up tong is provided with a jaw die plate and die seating surface that are shaped to permit radial insertion of the die plate onto its seating surface. Both vertical and horizontally aligned splines, or spline segments are present on the seating surface. Grooves between the protrusions on the mating surface of the die plate interfit between the splines and/or spline segments to stabilize the die plate and to absorb both rotational torque forces and vertical shearing forces without disengagement from its seating surface.
    Type: Application
    Filed: May 1, 2002
    Publication date: November 6, 2003
    Inventors: Dan Dagenais, Jonathan Brent Fraser, Leslie L. Szalacsi, Hermann Basler
  • Jaw assembly for gripping pipes
    Patent number: 6637296
    Abstract: A jaw assembly for a power tong or back-up tong is provided with a jaw die plate and die seating surface that are shaped to permit radial insertion of the die plate onto its seating surface. Both vertical and horizontally aligned splines, or spline segments are present on the seating surface. Grooves between the protrusions on the mating surface of the die plate interfit between the splines and/or spline segments to stabilize the die plate and to absorb both rotational torque forces and vertical shearing forces without disengagement from its seating surface.
    Type: Grant
    Filed: May 1, 2002
    Date of Patent: October 28, 2003
    Inventors: Dan Dagenais, Jonathan Brent Fraser, Leslie L. Szalacsi, Hermann Basler