| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a port plug capable of removing foreign matters accumulated around the port plug by catching them thereon when removing the port plug from the port. Ž<P>SOLUTION: The port plug 100 includes fitting parts 7, 9 that fit to an inner circumference of the port 1 formed so as to open to a port end surface 2, and the fitting parts 7, 9 are fitted into the port 1 to close the port 1. An annular groove 12 serving as a foreign matter storage is formed at the periphery of the fitting part 9 so that the foreign matters accumulated around the port plug 100 can enter the annular groove when the port plug 100 is pulled out from the port 1. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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