Patent ID: 7740455

Claim:
A system for hydraulically pumping liquid without using electricity comprising: a first reservoir at a first elevation, operatively arranged to store a first liquid; a second reservoir at a second elevation, where said second elevation is substantially lower than said first elevation, said second reservoir operatively arranged to store a second liquid; a third reservoir at a third elevation, where said third elevation is substantially lower than said first elevation, said second elevation is higher than said third elevation, and said third reservoir operatively arranged to store said second liquid; and, at least one hydraulic pump connected to said first reservoir via a first conduit, connected to said second reservoir via a second conduit, connected to said third reservoir via a third conduit, said pump operatively arranged to be powered by said first liquid when said first liquid is permitted to fall due to gravity, and said pump operatively arranged to pump said second liquid from said third reservoir to said second reservoir.