Patent ID: 7131278

Claim:
Method of transferring cryogenic liquid to a recipient tank from a station tank system which includes a first tank and a second tank, said method comprising: storing at least a part of said cryogenic liquid within said station tank system at a first pressure which is higher than a pressure in said recipient tank, transferring a part of said cryogenic liquid from said first tank to said second tank with cooling thereof to a temperature below an equilibrium temperature for said first pressure to form a cooled part of said cryogenic liquid, and transferring said cooled part of said cryogenic liquid from the second tank to said recipient tank, wherein said second tank is pressurized by feeding gas from the first tank to the second tank to subcool said cryogenic liquid in said second tank and to create a differential pressure necessary for said transferring of said cooled part of said cryogenic liquid to said recipient tank.