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:
Oct. 06, 2015
Filed:
Feb. 08, 2012
Shinichi Matsuo, Yokohama, JP;
Nobuhiro Hirata, Yokohama, JP;
Shinji Shimokawa, Toyota, JP;
PIOLAX, INC., Yokohama-Shi, Kanagawa, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-Shi, Aichi, JP;
Abstract
An overfill prevention valve includes: a valve housing having a first valve seat communicating with a fuel tank, and a second valve seat communicating with a canister; a parent valve disposed slidably within the valve housing, and having a base end opening communicating with a first opening, a front end opening communicating with a second opening and a third valve seat provided in the base end opening; a first urging unit which urges the parent valve toward the first valve seat; a child valve disposed slidably within the parent valve; a second urging unit which urges the child valve toward the third valve seat; and an air passage forming unit which forms an air passage between the parent valve and the first valve seat when the patent valve abuts on the first valve seat.