Patents by Inventor Ashraf Nazarali Rajabali

Ashraf Nazarali Rajabali 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).

  • 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