Title:
EXHAUST VALVE DEVICE FOR FUEL TANK
Document Type and Number:
WIPO Patent Application WO/2013/069239
Kind Code:
A1
Abstract:
[Problem] An exhaust valve device for a fuel tank, wherein gas is smoothly circulated without causing the size of the device to increase. [Solution] An exhaust valve device (1) for a fuel tank, the exhaust gas device (1) having a float valve (5) and casings (2, 3, 4), the interior formed therefrom being partitioned into a top chamber (41) and a bottom chamber (42) by means of a partitioning wall (35) having a communication hole (36), wherein: the section forming the top chamber of the casing has a cylindrical part (11) on which an exhaust port (20) is formed, and a circular plate (12) which blocks the top end of the cylindrical part; a tubular body (37) is disposed on the periphery of the communication hole (26) on the side of the top chamber; a first ventilation hole (43) is formed on the side wall of the tubular body on the side opposing the exhaust port; a curved corner part (13) for smoothly connecting the inner circumferential surface of the cylindrical part and the bottom surface of the circular plate is disposed at the boundary part of the inner circumferential surface of the cylindrical part and the bottom surface of the circular plate; and the curvature of the corner part is the smallest towards the side opposing the side on which the exhaust hole is formed and gradually increases in the circumferential direction towards the side on which the exhaust hole is formed.
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| JPH05338449 | FUEL TANK FOR VEHICLE |
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| JPS52113424 | PURGE VALVE |
Inventors:
HONDA ITSUO (JP)
NABEYA SHUNPEI (JP)
NABEYA SHUNPEI (JP)
Application Number:
PCT/JP2012/007046
Publication Date:
May 16, 2013
Filing Date:
November 02, 2012
Export Citation:
Assignee:
NIFCO INC (JP)
International Classes:
B60K15/035; F02M37/00; F16K24/00; F16K31/24
Foreign References:
| JPH08276756A | 1996-10-22 | |||
| JP2010105523A | 2010-05-13 | |||
| JP2010188991A | 2010-09-02 | |||
| JP2000345933A | 2000-12-12 | |||
| JP2007333136A | 2007-12-27 |
Other References:
See also references of EP 2777971A4
Attorney, Agent or Firm:
OSHIMA & PARTNERS (JP)
Patent business corporation Oshima patent firm (JP)
Patent business corporation Oshima patent firm (JP)
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Claims: