Patent ID: 7261523

Claim:
A pump system for providing a pressurized liquid comprising: a. an elevated supply reservoir of a liquid at a first pressure; b. at least one pair of vertically reciprocating liquid transfer vessels, each of said transfer vessels having: i) a force transfer assembly operatively associated with it that transfers downward force into upward force; and ii) a liquid pump operatively associated with said force transfer assembly for delivering liquid at a second pressure that is greater than said first pressure; and c. a storage reservoir below said supply reservoir for receiving liquid from said supply reservoir and delivering said liquid to each of said liquid pumps, said supply reservoir being adapted to supply said liquid to said transfer vessels under gravity flow, said liquid applied to said transfer vessels providing said downward force, and wherein: a. said at least one pair of transfer vessels, b. each of said liquid pumps, c. each of said force assemblies and d. said storage reservoir are disposed within a sealed container.