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:
Mar. 20, 2018
Filed:
Feb. 22, 2016
Toyoda Gosei Co., Ltd., Kiyosu-shi, Aichi-ken, JP;
Hiroyuki Hagano, Kiyosu, JP;
TOYODA GOSEI CO., LTD., Aichi-pref., JP;
Abstract
An object is to provide a technique that suppresses deformation or the like of a spring provided to close a flap valve in an open-close device for fuel tank. The open-close device for fuel tank comprises a filler port-forming member that is configured to form a filler port of a fuel passage; an open-close member that is configured to open and close the filler port; and a double torsion spring that is configured to include a pressing portion arranged to press the open-close member in a valve closing direction and two coil portions connected with respective ends of the pressing portion and is supported by the filler port-forming member in a rotatable manner. The double torsion spring has a space defined by the two coil portions. The filler port-forming member is placed in the space and has a restricting element configured to restrict deformation of the double torsion spring.