ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,459,790, issued on Nov. 4.
"Overhead crane and boom" was invented by Lee Weddel (Linden, Mich.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A crane assembly containing a boom for an overhead crane and trolley contains an arm having a first vertical portion and an outer surface, the arm fixed to the crane for upper and lower movement of the arm, and the arm containing a second portion angularly extending from the vertical portion. An outer sleeve surrounds and is fixed to the vertical portion, wherein the outer sleeve is fixed to the trolley and extends about the arm thereby defining a plenum between the outer sleeve and the inner vertical arm. During o...