Patent ID: 8138417

Claim:
An underground storage system for operational electronic equipment, the system comprising: a hermetically sealable container adapted for receiving electronic equipment, the hermetically sealable container being adapted for being buried underground; a cable feedthrough disposed in the container, the cable feedthrough maintaining the integrity of the sealed condition of the container while establishing a passageway from an interior of the hermetically sealed container to an exterior environment, the passageway accepting operational electrical cabling from a location exterior to the electronic equipment inside the buried hermetically sealable container; a check valve disposed in the container; a hollow tube connected to the check valve, the hollow tube extending away from the container; a pressure gauge attached to the tube, the pressure gauge displaying gauge pressure inside the hermetically sealable container; a pressurization canister attached to the tube, the pressurization canister containing inert gas and being operable to keep the container at a user-specified internal gauge pressure between approximately four and five pounds per square inch.