Low-emission nozzle and receptacle coupling for cryogenic fluid

A nozzle for coupling to and providing cryogenic fluid to a receptacle, the nozzle comprising:

• a body defining a chamber through which the cryogenic fluid is to flow, wherein the body comprises an outer shell that includes a front end;
• a fixed sleeve coupled to the outer shell;
• a rotating sleeve rotatably coupled to the fixed sleeve;
• one or more locking teeth fixed to the rotating sleeve, wherein the one or more locking teeth are configured to rotatably slide within respective one or more coupling slots of the receptacle as the rotating sleeve rotates relative to the fixed sleeve to couple the nozzle to the receptacle;
• and
• a redundant locking mechanism coupled to the outer shell, wherein, after the nozzle has rotated to couple to the receptacle, the redundant locking mechanism is configured to actuate to engage and prevent further rotation of the rotating sleeve to lock the nozzle to the receptacle.