PRESSURE CRIMPER WITH ELLIPTICAL FACE
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United States of America Patent
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Issued Date -
Aug 16, 2012
app pub date -
Feb 10, 2011
filing date -
Feb 10, 2011
priority date (Note) -
Abandoned
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Abstract
A pressure crimper for crimping a centralizer to a metal tubular. The crimper includes a generally cylindrical body having a central opening sufficiently large to allow insertion therethrough of a centralizer end having an external diameter; a sidewall of substantially uniform thickness including an inner-facing surface directed to the central opening and an outer-facing surface onto which are formed a plurality of passages. A piston is retained within each passage for hydraulic actuation inward. A face of each piston faces radially inward and has an elliptical shape. When the pistons are actuated, they apply pressure to the outer surface of the centralizer end to secure it to the tubular.
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