Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Alan Martyn Eddison0
David Anderson Coull0
Derek James Stuart0
Date of Patent
April 14, 2015
0Patent Application Number
135089820
Date Filed
November 10, 2010
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A method of translating a member through a bore involving moving fluid through a tubular member such as a drill string, and generating impulses on the member by varying the passage of fluid through the member using a valve which opens at a first rate and closes at a different second rate to urge the member to advance in a selected direction. The valve may close quickly and open slowly, or may close slowly and open quickly.
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