Wells – Guide for device or conduit – Surrounding existing device or tubing
Reexamination Certificate
2008-07-02
2010-12-14
Thompson, Kenneth (Department: 3672)
Wells
Guide for device or conduit
Surrounding existing device or tubing
Reexamination Certificate
active
07849918
ABSTRACT:
An apparatus and method for manufacture of a unitary centralizer forming Apertures are formed in a blank to create an intermediate blank having bow spring elements within a unitary centralizer and expanding a medial portion of the bow spring elements. An expansion element is inserted into the intermediate blank. An expansive force is applied to the expansion element, thereby expanding the medial portion of the bow spring elements. Mandrels placed against the upper and lower surfaces of the expansion element receive a compressive force for transfer to the expansion element. Set screw holes are placed on the unitary centralizer for attachment.
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Ehlinger Jeff
Graen Larry
Arnold Gordon T.
Arnold & Knobloch, L.L.P.
Davis-Lynch, Inc.
Knobloch Charles S.
Thompson Kenneth
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