The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2015
Filed:
Nov. 02, 2012
Nifco Inc., Yokohama-shi, Kanagawa, JP;
Itsuo Honda, Kamakura, JP;
Shunpei Nabeya, Sagamihara, JP;
NIFCO INC., Yokohama-shi, Kanagawa, JP;
Abstract
An exhaust valve device for a fuel tank includes a casing partitioning an inside into an upper chamber and a lower chamber by a bulkhead including a through hole, an inflow hole communicating the lower chamber and an inside of the fuel tank, an exhaust hole communicating a side portion of the upper chamber and an outside of the fuel tank, and a float valve displaceably supported in the lower chamber. A portion defining the upper chamber of the casing includes a cylinder portion and a circular plate closing an upper end of the cylinder portion. A buffer chamber is defined between the cylinder body and the bulkhead to communicate with the lower chamber by the through hole. In a side wall on a side opposing an exhaust hole side of the cylinder body, a first ventilation hole communicating the buffer chamber and the upper chamber is formed.