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:
Apr. 19, 2016
Filed:
Apr. 10, 2009
Riki Otsuka, Toyota, JP;
Hirokazu Otsubo, Toyota, JP;
Motohiro Mizuno, I, Toyota, JP;
Takenori Aiyama, Toyota, JP;
Satoshi Ohnuma, Toyota, JP;
Nobuyuki Ogami, Anjo, JP;
Riki Otsuka, Toyota, JP;
Hirokazu Otsubo, Toyota, JP;
Motohiro Mizuno, I, Toyota, JP;
Takenori Aiyama, Toyota, JP;
Satoshi Ohnuma, Toyota, JP;
Nobuyuki Ogami, Anjo, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-Shi, JP;
Abstract
There are disclosed a tank having a structure which achieves both a burst strength and a fatigue strength, and a manufacturing method of the tank. In order to realize this, in a tank comprising a liner, and an FRP layer including a hoop layer and a helical layer formed by winding fibers around the outer periphery of the liner, at least an innermost helical layer is formed as a smooth helical layer. When the smooth helical layer, i.e., a helical layer which does not have any unevenness or which has only little unevenness is formed, the unevenness can be prevented from being transferred to the hoop layer adjacent to the helical layer. When structural bends (undulations) of the fibers of the hoop layer are suppressed, a fatigue strength of the fibers themselves can be enhanced.