Material or article handling – Well pipe or rod racking mechanism – With slope change
Reexamination Certificate
2008-01-14
2010-06-01
Adams, Gregory W (Department: 3652)
Material or article handling
Well pipe or rod racking mechanism
With slope change
C414S720000, C414S913000, C901S048000, C212S255000, C212S293000
Reexamination Certificate
active
07726929
ABSTRACT:
A pre-loading system for a pipe handling apparatus in which a boom is pivotally mounted at one end to a skid and in which an arm is interconnected to an opposite end of the boom. The pre-loading system has a tensioning system with one end affixed to the arm and an opposite end fixedly mounted so as to apply tension to the arm when the arm has a load applied to an end of the arm opposite the boom. The tensioning system includes a first cable assembly having one end interconnected to the arm and an opposite end fixedly mounted, and a second cable assembly interconnected to the arm and having an opposite end fixedly mounted. The first and second cable assemblies extend from opposite sides of the arm.
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U.S. Appl. No. 11/923,451, filed Oct. 24, 2007, Keith J. Orgeron.
Adams Gregory W
Fischer, Esq. John G.
Storm LLP
T&T Engineering Services
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