Expansion head for expansion tools, expansion tool comprising said expansion head and use thereof
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United States of America Patent
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Feb 28, 2017
Grant Date -
Oct 29, 2015
app pub date -
Feb 1, 2013
filing date -
Feb 3, 2012
priority date (Note) -
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Abstract
Expansion head for expansion tools for hollow workpieces, particularly for the ends of plastic pipes and metal-plastic composite pipes, comprising a union cap with a radially inwardly oriented guide flange, and a set of sector-shaped expandable jaws, each of which is individually received in the union cap in a radially movable manner by an inner flange sector that overlaps with the guide flange, the set of sector-shaped expandable jaws being movable between a closed state and an expansion state, and an approximately cylindrical lateral surface being embodied in the closed state by the outer wall of the expandable jaws, wherein the outer wall has at least one recess and/or raised area extending in the direction of the longitudinal axis of the expandable jaws.
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