Energy storage device with a variable volume chamber

Abstract

A mechanical energy storage device comprising an expandable and contractable, sealed primary chamber with a sealed variable internal volume containing an expandable/compressible primary fluid. An external medium or a secondary chamber that resists expansion of the primary chamber surrounds the primary chamber. An input mechanism that is actuated by an external force, manipulates formers to transform the primary chamber shell such that the sealed primary chamber increases in volume and the expanding fluid contained within reduces in pressure causing a partial vacuum pressure differential between the fluid and the surrounding medium, or secondary chamber, allowing energy to be stored. When the external force is removed, the pressure differential works to decrease the volume of the sealed primary chamber driving the output mechanism. A locking mechanism allows for the device to store energy, for it to be decoupled and transported, and for the energy to be extracted later.

Dependencies are inferred from the claim text.