Patent ID: 6901973

Claim:
A liquid natural gas filling system comprising: a first, low pressure vessel; a second, high pressure vessel; a third, high pressure vessel; a plurality of conduits, each conduit in said plurality having a valve, extending between, and in fluid communication within said first, low pressure vessel and said at least one second, high pressure vessel; a pressure building means coupled to said at least one second, high pressure vessel and structured to raise the pressure of a cryogenic liquid within said at least one second, high pressure vessel; an outlet nozzle structured to be coupled to a use vessel, said outlet nozzle coupled via said plurality of conduits to, and in fluid communication with, said first, low pressure vessel, said second, high pressure vessel and said third, high pressure vessel; and whereby a cryogenic liquid may be stored in said first, low pressure vessel at a low pressure, said cryogenic liquid at a low pressure may be further transferred to either said second, high pressure vessel or said third, high pressure vessel via said plurality of conduits, the pressure of said cryogenic liquid at a low pressure in said second, high pressure vessel or said third, high pressure vessel may be increased to a high pressure by actuating said pressure building means, and said cryogenic liquid at a high pressure in said second, high pressure vessel or said third, high pressure vessel may be transferred from said second, high pressure vessel or said third, high pressure to a use vessel via said plurality of conduits and said nozzle.