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. 21, 1997
Filed:
Sep. 11, 1995
Joji Kasugai, Aichi, JP;
Yoshihiro Nagino, Aichi, JP;
Toyoda Gosei Co., Ltd., Aichi, JP;
Abstract
A fuel cutoff valve capable of preventing a sudden rise in the internal pressure of the fuel tank during charging of fuel into the fuel tank and capable of controlling the rise in the internal pressure in stages, thereby making it possible to smoothly charge the fuel to a full tank. The fuel cutoff valve includes of a float accommodated in a case having air holes, a valve element disposed on top of the float so as to close an air efflux channel, and a spring for assisting a valve-closing movement of the float. The valve element is formed of rubber, and includes a base portion attached to an upper portion of the float and a disk-shaped seal portion capable of being brought into pressure contact with an entire peripheral edge of the air efflux channel, air holes being formed in the seal portion. The float includes in its upper portion a plate-like valve seat disposed below the seal portion and capable of closing the air holes in the seal portion when the valve seat is brought into pressure contact with the outer peripheral edge of the seal portion, and a base-portion attaching portion disposed in a center of the valve seat.