Patent ID: 11904681
Assignee: nan
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A refueling coupling having:
an annular member,
a fitting on the annular member complementary to a pressure refueling nozzle,
a displaceable dry-break member in the coupling for normally sealing the coupling via a seal between the annular member and the dry-break member, the dry-break member being displaceable from its sealing position on connection of a pressure refueling nozzle,
an aperture in the displaceable dry-break member, and
a subsidiary displaceable member carried by the dry-break member, the subsidiary displaceable member being rotatably engageable with the dry-break member,
wherein when the subsidiary displaceable member is rotatably engaged with the dry-break member, a fluid tight seal is formed between the subsidiary displaceable member and the dry-break member,
wherein the subsidiary displaceable member is adapted to be manually removable from the dry-break member for gravity refueling by being rotatably engageable with the dry-break member.