Patents Assigned to DELMC, Inc.
  • Patent number: 6488094
    Abstract: An apparatus for handling safety valves used for shutting off high pressure upward flow through drill pipe or tubing. The apparatus includes an adjustable clamp assembly for holding the safety valve; a three-stage double-acting hydraulic extension system to provide horizontal (and optionally, rotational) movement of the safety valve; a telescoping, mechanically-extending stanchion with a stabilizing plate attached to the hydraulic extension system; a stable track assembly for vertical movement of the apparatus; and a positioning arm with a yoke for placement against the drill pipe or tubing, providing a distance measurement used to vertically align the safety valve with the drill pipe or tubing.
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: December 3, 2002
    Assignee: DELMC, Inc.
    Inventor: Bobby Dewain McDowell