Pipe connecting device with fastening completion structure
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United States of America Patent
Stats
-
May 30, 2017
Grant Date -
Jul 31, 2014
app pub date -
Jan 23, 2014
filing date -
Jan 28, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A pipe connecting device having a joint body including a fitting cylinder to which a flared synthetic resin-made tube is to be externally fitted, an external thread formed on a radially outward side of the fitting cylinder; and a union nut including an internal thread screwed with the external thread, and a tube pressing portion that presses a diameter changing portion formed between a flared portion in the tube, and a non-flared portion, in the direction of the axis. In a fastening completion state in which the tube pressing portion is caused to press the diameter changing portion by a screw advancement of the union nut, the screw advancement being produced by screwing the internal thread to the external thread, positions of a basal end of the external thread and a tip end of the union nut in the directions of axes coincident with each other.
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