Patents Assigned to The Hydrill Company
  • Mounts for blowout preventer bonnets
    Patent number: 7096960
    Abstract: A mount for a bonnet of a blowout preventer includes at least one support member coupled to a body of the blowout preventer, and a bonnet mounting member moveably coupled to the at least one support member and adapted to move substantially normal to a face of the body of the blowout blowout preventer, wherein the bonnet is coupled to the bonnet mounting member.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: August 29, 2006
    Assignee: Hydrill Company LP
    Inventors: Edward Hemphill, Michael Berckenhoff, William Carbaugh
  • Free flow low energy pipe protector
    Patent number: 5542454
    Abstract: A pipe protector has been designed to provide free flow and low energy. The outside surface has a bilateral asymmetrical pattern when comparing the approximate top half of the pipe protector to the bottom half of the pipe protector. The pattern has raised figures surrounded by communicating channels.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: August 6, 1996
    Assignee: Hydrill Company
    Inventors: Douglas W. Carlson, Stephen P. Simons
  • Cylindrical threaded connection with uniform interference
    Patent number: 4730857
    Abstract: A cylindrical threaded connection in which most of the threads between the slightly tapered pin end and the slightly tapered box end have free running radial clearance therebetween. One or two revolutions of thread near the pin end or near the box opening have reduced root dimension or enlarged crest dimension to provide uniform interference in the last revolutions or so of complete connection makeup. This uniformly spreads the load over the axial distance of the interference.
    Type: Grant
    Filed: September 13, 1985
    Date of Patent: March 15, 1988
    Assignee: The Hydrill Company
    Inventor: Brian E. Schwind