PIPE CONNECTING DEVICE
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United States of America Patent
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N/A
Issued Date -
Mar 17, 2016
app pub date -
Mar 24, 2014
filing date -
May 8, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
In a pipe-connecting device having a pipe joint body, a union nut, and an inner ring that is to be press-inserted into an end of a tube, a seal element portion is formed in a basal end portion of the inner ring, and a seal forming portion of the pipe joint body is formed. The pipe-connecting device has a configuration where, in an assembled state, the seal element portion and the seal forming portion are pressed against each other, and a diameter-contracted tube portion, which is in a tube end portion, and which is fitted onto a base-contracted diameter-contracted outer circumferential surface, and a tubular screwing portion are pressed against each other by a contact pressure that is lower than a contact pressure between the seal element portion and the seal forming portion, or separated from each other.
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