Title:
開閉弁、及び排水管構造
Document Type and Number:
Japanese Patent JP7398261
Kind Code:
B2
Abstract:
To provide an on-off valve that can suppress the entrance of drainage water into a ventilation valve while ensuring ventilation performance of the ventilation valve attached to a ventilation port of a drain trap.SOLUTION: A rectifying member 300 as an example of the on-off valve comprises a tubular part 300A that is formed in a tubular shape and fins 300B that swings toward an opening 302 side by an external force and can close the opening 302, wherein the fins are swingably provided in a part of one opening 302 of the tubular part 300A, and in a free state, the fins are inclined outward in an axial direction of the tubular part 300A and separated from the opening 302.SELECTED DRAWING: Figure 19
Inventors:
Yosuke Terashima
Application Number:
JP2019225170A
Publication Date:
December 14, 2023
Filing Date:
December 13, 2019
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
E03C1/298; E03C1/122; E03C1/284; F16K15/16
Domestic Patent References:
| JP2015068039A | ||||
| JP2002294780A | ||||
| JP2019206901A | ||||
| JP2016199943A | ||||
| JP2016217096A | ||||
| JP2014005662A | ||||
| JP49041053B1 |
Attorney, Agent or Firm:
Patent Attorney Corporation Taiyo International Patent Office