Patents Assigned to Opsco Energy Industries Ltd
  • Automatic pipeline pig launching system
    Patent number: 5913637
    Abstract: A remotely actuable launching system for inserting pigs into a pipeline includes a barrel that can accommodate a series of pigs end-to-end. The pigs are urged towards the forward end of the barrel where they are controlled by a pair of axially spaced actuators for release one at a time into the pipeline. Operation of the actuators is effected by a control system using high pressure nitrogen gas and which can be remotely operated to effect launching of a pig into the pipeline at any desired time, without the need for personnel to be on-site.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: June 22, 1999
    Assignee: Opsco Energy Industries Ltd
    Inventors: Ashraf Nazarali Rajabali, Robert Darryl West