US2009200852A1PendingUtilityA1

Back bar linkage assembly

48
Individually held — no corporate assignee on recordPriority: Feb 11, 2008Filed: Aug 14, 2008Published: Aug 13, 2009
Est. expiryFeb 11, 2028(~1.5 yrs left)· nominal 20-yr term from priority
Inventors:Philip M. HoytArthur K. Fox
F16L 55/28
48
PatentIndex Score
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Claims

Abstract

A linkage for mounting the elements of an in-line pipeline inspection vehicle. The embodiment allows measurements to be taken while constraining the vehicle to travel within an axial plane of the pipeline.

Claims

exact text as granted — not AI-modified
1 . A linkage for supporting the elements of an instrument pig, comprising:
 a back bar assembly;   a front linkage connected to said instrument pig and said back bar assembly; and   a rear linkage connected to said instrument pig and said back bar assembly.   
     
     
         2 . The instrument pig of  claim 1 , wherein said instrument pig is used for the in-line inspection of a pipeline. 
     
     
         3 . The front linkage of  claim 1 , wherein said front linkage comprises multiple links. 
     
     
         4 . The front linkage of  claim 3 , wherein said front linkage comprises two links. 
     
     
         5 . The rear linkage of  claim 1 , wherein said rear linkage comprises multiple links. 
     
     
         6 . The rear linkage of  claim 5 , wherein said rear linkage comprises three links. 
     
     
         7 . The rear linkage of  claim 6 , wherein said rear linkage allows said back bar assembly to stay parallel to the inside surface of said pipeline as said instrument pig moves through the interior of said pipeline. 
     
     
         8 . The rear linkage of  claim 7 , wherein said rear linkage restricts said instrument pig to movement within an axial plane of said pipeline.

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