PORT STRUCTURE AND FLUID DEVICE INCLUDING THE PORT STRUCTURE
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United States of America Patent
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N/A
Issued Date -
Aug 18, 2011
app pub date -
Jan 14, 2011
filing date -
Feb 18, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A port structure for connecting a resin tube to a port part includes a tube insertion hole in which the tube is inserted, a female screw portion provided in an opening of the tube insertion hole, and a tapered hole provided on a inward side of the female screw portion and formed with a taper with a diameter decreasing from the female screw side to the rear end. When a nut is screwed into the female screw portion to press the ferrule against the tapered hole, a repulsive force of the tapered hole acts on a tapered surface of the ferrule, elastically deforming the ferrule radially inward so that the ferrule bites into the tube and is pressed against the tapered hole to provide a seal.
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