US 12,366,327 B2
Gas tank and method of manufacturing the same
Yuki Kai, Nagoya (JP); and Osamu Sawai, Okazaki (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on May 16, 2023, as Appl. No. 18/318,077.
Claims priority of application No. 2022-082306 (JP), filed on May 19, 2022.
Prior Publication US 2023/0375133 A1, Nov. 23, 2023
Int. Cl. F17C 1/06 (2006.01)
CPC F17C 1/06 (2013.01) [F17C 2201/0109 (2013.01); F17C 2203/012 (2013.01); F17C 2203/0604 (2013.01); F17C 2203/0624 (2013.01); F17C 2203/0673 (2013.01); F17C 2209/2109 (2013.01); F17C 2209/2154 (2013.01); F17C 2221/012 (2013.01); F17C 2260/01 (2013.01); F17C 2270/0168 (2013.01); F17C 2270/0184 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A gas tank comprising:
a liner including a cylindrical body part and a pair of dome parts, wherein each dome part is arranged at each of opposite ends of the body part; and
a reinforcing layer covering an outer periphery of the liner, wherein
the reinforcing layer includes:
at least one first fiber layer including a first reinforced section provided on an outer periphery of the body part, the first reinforced section being formed by performing braid winding, the braid winding including winding fibers in such a manner that the fibers are interlaced with each other; and
at least one second fiber layer including a second reinforced section provided on the outer periphery of the body part, the second reinforced section being formed by performing helical winding, the helical winding including winding fibers at a predetermined angle relative to a center axis of the liner,
an outermost layer of the reinforcing layer is one of the at least one first fiber layers,
an innermost layer of the reinforcing layer is one of the at least one first fiber layers,
each of the first fiber layer includes the first reinforced section on the outer periphery of the body part and on the outer periphery of each dome part,
each of the second fiber layer includes the second reinforced section on the outer periphery of the body part and the first reinforced section on the outer periphery of each dome part, and
the reinforcing layer includes:
a first continuously stacked section with a plurality of the first fiber layers stacked continuously; and
a second continuously stacked section with a plurality of the second fiber layers stacked continuously.