Fluid handling – Processes – Cleaning – repairing – or assembling
Reexamination Certificate
2007-12-25
2007-12-25
Lee, Kevin (Department: 3753)
Fluid handling
Processes
Cleaning, repairing, or assembling
C137S015070, C137S318000, C137S268000, C015S104062
Reexamination Certificate
active
11133514
ABSTRACT:
A method of providing access to the interior of a cross-line that intersects with a primary pipeline of equal or greater diameter, including the steps of attaching a branch fitting to the exterior of the primary pipeline on the side thereof opposite the point of intersection of the cross-line, affixing a full opening valve to the branch fitting, securing a hot tap machine to the valve, by use of the hot tap machine, cutting an opening in the primary pipeline diametrically opposite of the cross-line and of a diameter at least equal to the internal diameter of the cross-line, and removing the hot tap machine leaving an access through the valve and diametrically through the primary pipeline into the interior of the cross-line.
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Freeman Eric N.
Garrison Tony R.
Morgan Mark A.
Morrison Phillip K.
Gable & Gotwals
Lee Kevin
TDW Delaware Inc.
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