| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a safety joint of a gas passage for fusion cutting preventing gas flow into a pipe on a plug-joint side, even if connecting socket joints of a joint for inflammable gas and a joint for oxygen to respective plug joints for different uses. <P>SOLUTION: The joint (a) for inflammable gas has separable connection and opens and closes a passage of a valve chest with the connection and the separation. The joint (b) for oxygen has a component with the same configuration as the joint (a) and formed to have a similarly reduced size. Valve means of the joints (a, b), both plug guiding tubes (11, 11x) of a socket joint (1) for inflammable gas and a socket joint (1x) for oxygen, and plug ends (21, 21x) of a plug joint (2) for inflammable gas and a plug joint (2x) for oxygen are relatively formed. Even if the plug joints (2, 2x) for different uses are connected to the socket joints (1, 1x), respectively, the passage of the valve chest cannot be opened. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
