Title:
WATERSTOP DOOR
Document Type and Number:
Japanese Patent JP2018062784
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To maintain good water tightness between doors.SOLUTION: A waterstop door includes an annular frame body 10 having an opening at the center side, and a first door body 21 and a second door body 22 disposed at both sides to be water-tightly closed with the periphery sides overlapped on the frame body 10. Onto the door end side of the first door body 21 that revolves first to be closed, the door end side of the second door body 22 that revolves afterward to be closed is water-tightly pressed. The flexural strength in the vertical direction of the first door body 21 within a prescribed width times one on the door end side is larger than the flexural strength in the vertical direction of the second door body 22 within the same width on the door end side.SELECTED DRAWING: Figure 5
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Inventors:
SUNAGAWA MASAHIKO
WADA TETSUHIKO
WADA TETSUHIKO
Application Number:
JP2016201531A
Publication Date:
April 19, 2018
Filing Date:
October 13, 2016
Export Citation:
Assignee:
BUNKA SHUTTER
International Classes:
E06B5/00; E06B7/16
Domestic Patent References:
| JP2016089496A | 2016-05-23 | |||
| JP2015175088A | 2015-10-05 | |||
| JP2004084362A | 2004-03-18 | |||
| JP2013028919A | 2013-02-07 | |||
| JP2013163897A | 2013-08-22 | |||
| JP2014080816A | 2014-05-08 |
Foreign References:
| KR20130133384A | 2013-12-09 |
Attorney, Agent or Firm:
Eichi International Patent Office