Patents by Inventor Graham Chadwick

Graham Chadwick 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).

  • Multifunction downhole release tool mechanism with lost motion
    Patent number: 8230932
    Abstract: Presented is a system and method for disconnecting a plurality of wireline tools from a string of wireline tools while maintaining operation of the wireline tools remaining with the string of wireline tools. The disconnection is non-destructive and allows a reconnection of the disconnected tools after retrieval from the well. The system also enables testing of the disconnection mechanism before deploying the wireline tool string into the well.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: July 31, 2012
    Assignee: Sondex Wireline Limited
    Inventors: James David Ratcliffe, Timothy Gill, Peter Withers, Lee Strobel, Graham Chadwick
  • MULTIFUNCTION DOWNHOLE RELEASE TOOL MECHANISM WITH LOST MOTION
    Publication number: 20120132439
    Abstract: Presented is a system and method for disconnecting a plurality of wireline tools from a string of wireline tools while maintaining operation of the wireline tools remaining with the string of wireline tools. The disconnection is non-destructive and allows a reconnection of the disconnected tools after retrieval from the well. The system also enables testing of the disconnection mechanism before deploying the wireline tool string into the well.
    Type: Application
    Filed: November 30, 2010
    Publication date: May 31, 2012
    Applicant: SONDEX WIRELINE LIMITED
    Inventors: James David RATCLIFFE, Timothy GILL, Peter WITHERS, Lee STROBEL, Graham CHADWICK
  • Dental instrument
    Publication number: 20030091956
    Abstract: The invention relates to a dental instrument, in particular a dentist's hand tool for precisely determining and setting the lengths of dental cutting tools.
    Type: Application
    Filed: August 5, 2002
    Publication date: May 15, 2003
    Inventors: Richard Graham Chadwick, Charles Proctor Gibson