Title:
チェックバルブ
Document Type and Number:
Japanese Patent JP5653528
Kind Code:
B2
Abstract:
A check valve includes a casing including a positive pressure valve seat, a positive pressure valve urged by a positive pressure valve spring and including a negative pressure valve seat, and a negative pressure valve assembled to the positive pressure valve and urged by a negative pressure valve spring, where the positive pressure valve includes an inner cylinder, an outer cylinder that is connected with an outer circumference of the inner cylinder via ribs, and passages formed between the inner cylinder and the outer cylinder, where the positive pressure valve spring is disposed the casing and the outer cylinder, and where the negative pressure valve spring is disposed in the inner cylinder.
Inventors:
山口 弘晴
Application Number:
JP2013531121A
Publication Date:
January 14, 2015
Filing Date:
March 30, 2012
Export Citation:
Assignee:
株式会社パイオラックス
International Classes:
F02M37/00; B60K15/035; F16K15/02
Domestic Patent References:
| JP2011141018A | 2011-07-21 | |||
| JP3421828B2 | 2003-06-30 | |||
| JP2006044586A | 2006-02-16 | |||
| JP2003240143A | 2003-08-27 |
Foreign References:
| WO2010064475A1 | 2010-06-10 |
Attorney, Agent or Firm:
Shigeru Matsui