Title:
PROTECTIVE MEMBER FOR VENT VALVE, VENT VALVE DEVICE AND PIPING STRUCTURE
Document Type and Number:
Japanese Patent JP2019167742
Kind Code:
A
Abstract:
To provide the protective member for the vent valve, that prevents dirt from adhering to the vent valve from the inside of a piping material without hindering inflow of outside air as much as possible.SOLUTION: The protection member 150 comprises a louver part 153 that is disposed closer to an axial deep part side of a tubular part than the vent valve 100 so as to at least partially cover the vent valve 100 from the axial deep part side. The louver part 153 has a plurality of annular blade bodies 153a arranged concentrically and spaced apart from each other. A ventilation path that allows the inflow of air from the vent valve 100 to the piping material is formed between adjacent blade bodies 153a.SELECTED DRAWING: Figure 1
Inventors:
NAKAMURA ATSUSHI
Application Number:
JP2018056478A
Publication Date:
October 03, 2019
Filing Date:
March 23, 2018
Export Citation:
Assignee:
MIRAI IND
International Classes:
E03C1/122; F16K15/14; F16K24/06
Domestic Patent References:
| JP2015232369A | 2015-12-24 | |||
| JP2014074483A | 2014-04-24 | |||
| JP2010031594A | 2010-02-12 | |||
| JP2008101455A | 2008-05-01 |
Foreign References:
| US20170298601A1 | 2017-10-19 |
Attorney, Agent or Firm:
Hiroe Associates Patent Office