QUICK CONNECTION FOR PUMPING FUEL Russian patent published in 2023 - IPC B64D37/00 F16L37/107 F16L37/248 F16L37/40 F16L37/50 

FIELD: aircraft refuelling.

SUBSTANCE: device for quickly connecting (1) fuel tanks for refuelling an aircraft with liquid fuel contains a female element (7) connected to the first tank, a male element (2) connected to the second tank, and a blocking element (40). The blocking element (40) surrounds the male element (2) and leaves a limited degree of sliding for the male element (2) relative to the female element (7). The female element (7) contains two concentric rings, made integral with the radial part (14) of the female element (7). The first ring (16) contains a plurality of L-shaped grooves configured to interact with the lock, and the second ring (17) contains the first recess extending axially along the height of the second ring (17) for engagement with the stopper, and a second recess, offset at an angle relative to the first recess and configured to interact with the stopper in a locked position.

EFFECT: increased reliability, reduced weight and size, as well as the ability to quickly install and remove are achieved.

9 cl, 7 dwg