US Patent 10106760 Organic based extraction system

An organic based extraction system is described. Embodiments of the extraction system include a first vessel, a second vessel, a third vessel, a pump, and a plurality of sight lenses. Generally, each of the vessels and the pump can be set up to form a closed loop system adapted to recover and reuse a solvent. A fluid flow from the first vessel to the second vessel, from the second vessel to the third vessel, from the third vessel to the pump, and from the pump back to the first vessel can be implemented. Typically, an extract from organic matter can be recovered in the third vessel. In one embodiment, the plurality of sight lenses can be implemented to determine if more solvent is needed and to check the extract while an extraction process is running.