Patent ID: 11916508
Assignee: nan
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F  B | IPC B  F  H

Claim 16:
17. An energy or fluid storage system comprising:
a bag comprising a deformable boundary defining a bag interior that can be filled with said fluid and emptied of said fluid as desired, said bag being capable of occupying a less-filled configuration and a more-filled configuration; and
a mass of overburden overlying said bag, said overburden being able to be raised and lowered as a function of a degree of filling of said bag interior,
wherein, away from a central portion, said overburden is bounded by a wall,
wherein said wall extends upward to an elevation higher than an elevation of said overburden that touches said wall,
wherein said wall has a generally vertical configuration and extends down into a substrate that underlies said bag.