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:
Sep. 02, 2008
Filed:
Sep. 22, 2005
Masanori Nojiri, Aichi-ken, JP;
Tomohide Aoki, Aichi-ken, JP;
Masanori Nojiri, Aichi-ken, JP;
Tomohide Aoki, Aichi-ken, JP;
Toyoda Gosei Co., Ltd., Aichi-pref., JP;
Abstract
A fuel cutoff valve of the invention attached to an upper portion of a fuel tank includes a casing, a first part supported by multiple legs, a second part, and a spring. The second part is located below the first part in a vertically movable manner and has multiple air holes formed in a top plate to communicate with a buoyancy chamber. When the fuel level in the fuel tank rises to submerge the second part and reach the first part, the first part rises by its buoyancy to close a connection conduit. In the event of an abrupt rise of the fuel level at a high increase rate, for example, by a sudden turn of the vehicle, the second part rises by the increased buoyancy of the buoyancy chamber by the air retained in the buoyancy chamber and presses the first part up to close the connection conduit. The fuel cutoff valve of the invention promptly closes in response to a heavy ruffle of the fuel level by a sudden turn of the vehicle, so as to prevent the outflow of the fuel from the fuel tank.