Abstract: A supply device and a method for building and operating a supply device of a filling station for liquid hydrogen are disclosed. The supply device has at least one storage tank for liquid hydrogen, and at least one pump for liquid hydrogen, the storage tank and pump being directly interconnected.

Abstract: Described as a filler-tank coupling, exhibiting a) a coupling plug (S), b) in which is arranged an axially movable conduit (R), c) a coupling socket (D) corresponding to the coupling plug (S), d) wherein the conduit (R) extends beyond the parting plane (T) into the coupling socket (D) in the coupled state, so that a media opening (9) provided in the front area of the conduit (R) becomes aligned with the inlet opening of a media line (L) arranged in the coupling socket (D), and e) means for joining the coupling plug (S) and coupling socket (D). According to the invention f) the conduit (R) has an insulated design (1), g) a first insulating body (2) is arranged at the front end of the conduit (R), h) the coupling socket (D) exhibits a second insulating body (6) that can move in an axial direction and corresponds to the first insulating body (2), and i) the conduit (R), first insulating body (2) and second insulating body (6) are sealed gastight (3, 4, 7).