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Patent Searching and Data


Title:
OVERFILL PREVENTION VALVE
Document Type and Number:
WIPO Patent Application WO/2012/124410
Kind Code:
A1
Abstract:
Provided is an overfill prevention valve capable of suppressing additional supply of fuel after full-tank limiting by a full-tank limiting valve during refueling. This overfill prevention valve (10) comprises: a valve housing (20) having a first valve seat (47) communicating with a fuel tank side and a second valve seat (37) communicating with a canister side; a parent valve (50) arranged slideably in the internal space of the valve housing and having disposed therein a base end opening (73) communicating with a first opening side, a front end opening (63) communicating with a second opening side, and a third valve seat (77) disposed in the base end opening; a first impelling means (91) impelling the parent valve towards the first valve seat; a child valve (80) arranged slideably in the internal space of the parent valve and configured so as to be capable of being brought into contact with and separated from the third valve seat; a second impelling means (92) arranged inside the parent valve and which impels the child valve towards the third valve seat; and a means that forms a prescribed air passage between the parent valve and the first valve seat when the parent valve comes in contact with the first valve seat.

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Inventors:
MATSUO SHINICHI (JP)
HIRATA NOBUHIRO (JP)
SHIMOKAWA SHINJI (JP)
Application Number:
PCT/JP2012/052841
Publication Date:
September 20, 2012
Filing Date:
February 08, 2012
Export Citation:
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Assignee:
PIOLAX INC (JP)
TOYOTA MOTOR CO LTD (JP)
MATSUO SHINICHI (JP)
HIRATA NOBUHIRO (JP)
SHIMOKAWA SHINJI (JP)
International Classes:
B60K15/077; B60K15/01; F02M37/00; F16K1/44; F16K24/04
Foreign References:
JP2012047169A2012-03-08
JP2011141018A2011-07-21
JP2004068738A2004-03-04
JP2003148265A2003-05-21
Attorney, Agent or Firm:
MATSUI SHIGERU (JP)
Shigeru Matsui (JP)
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Claims: