US 12,448,181 B2
Receptacle cap
Yutaka Sawada, Nagakute (JP); and Shota Yamamoto, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Jan. 18, 2024, as Appl. No. 18/416,290.
Claims priority of application No. 2023-021075 (JP), filed on Feb. 14, 2023.
Prior Publication US 2024/0270454 A1, Aug. 15, 2024
Int. Cl. B65D 47/12 (2006.01)
CPC B65D 47/12 (2013.01) 2 Claims
OG exemplary drawing
 
1. A filling port structure comprising:
a receptacle configured as a filling port of a fuel gas tank; and
a cap removably attached to the receptacle, the cap comprising:
a top panel portion that blocks an opening of the receptacle;
a skirt portion extending along an outer peripheral wall of the receptacle; and
a circumferential projection made of rubber or resin provided on an inner peripheral wall of the skirt portion,
wherein
the circumferential projection is arranged so as to abut on the outer peripheral wall of the receptacle when the cap is being attached to the receptacle,
the skirt portion includes a small-diameter skirt portion coupled to the top panel portion and having a relatively small inside diameter and a large-diameter skirt portion coupled to the small-diameter skirt portion and having a relatively large inside diameter,
the large-diameter skirt portion includes an open end away from the small-diameter skirt portion, and
the circumferential projection is located close to the open end of the large-diameter skirt portion.