Constant Pressure Rainwater Harvesting Distribution Device and System

Abstract

A rainwater harvesting device and system that stores water for irrigation and outdoor use that provides constant pressure via gravity to a sprayer such as might be used for landscape or garden irrigation, or outdoor washing. The device and system comprise a water storage vessel that is free to move vertically, and optionally contained within a rack or other structure if necessary, and supported by one or more springs, which can be compression or tension springs or a combination thereof. When the vessel is at or near capacity, the spring assembly is largely or fully compressed/extended and supports the vessel at a minimal elevation. In such a state, the pressure head provided by the static water level is sufficient to provide a desired pressure at the sprayer. During periods of lower storage, however, such as following water draw-off and lower replenishment, the spring assembly responds to the lower load by extending vertically, thus raising the vessel and thereby providing an increase in elevation head, maintaining the same desired pressure at the sprayer, regardless of the volume contained in the vessel.

Dependencies are inferred from the claim text.