ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,453,341, issued on Oct. 28.
"Retractable spray shield for agricultural use" was invented by Mark T. Hagberg (Lafayette, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A retractable spray shield for agricultural use has a spray barrier; a two-part storage tube; a deployment and concealment drive having a motor, a drive shaft, and a quadrilateral linkage that in one direction deploys the spray barrier from the storage tube and in a second opposed direction conceals the spray barrier within the storage tube. The quadrilateral linkage is defined by a rotating arm; a pushing arm coupled to the drive shaft; the bottom of a unit storage tube, and a trans...