| 摘要 |
PROBLEM TO BE SOLVED: To provide a jet flow gate of an underwater discharge type constituted into a small size at low cost. SOLUTION: This jet flow gate is so constituted that guide plates 18 are provided in both sides of a conical nozzle 17 of a body 12 respectively extending in the moving direction of a door body 1, fitting recess parts 15Bb opening inward respectively are provided in the upstream side in the both side edges of the door body 1, the fitting recess parts 15Bb are externally fitted around the guide plates 18, and the door body 1 moves along the guide plates 18. COPYRIGHT: (C)2003,JPO
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