Title:
止水扉
Document Type and Number:
Japanese Patent JP6983498
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent a door body surface from being deformed.SOLUTION: A waterstop door includes an annular frame body 10 having an opening on the center side and a door body of which periphery side is overlapped on the frame body from the upstream side. The door body includes a plate-like parts 21c1, 21c2, 22c1 and 22c2, and horizontal aggregates 21p, 22o, 22p and 22q disposed between the plate-like parts. The aggregate is disposed away from the internal face of the plate-like part on the downstream side.SELECTED DRAWING: Figure 7
Inventors:
Masahiko Sunagawa
Tetsuhiko Wada
Tetsuhiko Wada
Application Number:
JP2016201534A
Publication Date:
December 17, 2021
Filing Date:
October 13, 2016
Export Citation:
Assignee:
Bunka Shutter Co., Ltd.
International Classes:
E06B5/00; E06B3/82
Domestic Patent References:
| JP2014105489A | ||||
| JP50081628U | ||||
| JP4857394B1 | ||||
| JP2006152724A | ||||
| JP10252183A |
Foreign References:
| US20140284068 | ||||
| CN2697276Y |
Attorney, Agent or Firm:
Patent Business Corporation Wisdom International Patent Office
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