Device and procedure for expanding the end of a plastic pipe
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United States of America Patent
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Jan 31, 2017
Grant Date -
Aug 30, 2012
app pub date -
Feb 28, 2012
filing date -
Feb 28, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A device for expanding an end of a pipe made of a plastic having a shape memory includes a plurality of spreading elements movable in a radial direction from a starting position, in which the spreading elements are insertable by a predetermined distance into the end of the pipe, to an outward-extended position, in which spreading surfaces of the spreading elements are each brought into an effective position against an interior surface of the end of the pipe, so as to expand the end of the pipe. A mechanism is configured to move the spreading elements from the starting position to the outward-extended position. An actuator is configured to vary a maximum radial distance of the spreading surfaces in the outward-extended position from a center axis. At least one fastener is configured to lock the radial maximum radial distance set by the actuator.
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