ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,507, issued on July 15, was assigned to Werner Co. (Greenville, Pa.).
"Strand grab, ladder and method" was invented by Thomas W. Parker (Jamestown, Pa.), Adrien Covington (Aurora, Ill.) and Claire Armenoff (Montgomery, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A strand grab for a ladder having a hook assembly, a gate assembly engaged with the hook assembly and a biasing spring. The biasing spring produces a return biasing force which is less than a weight force of the ladder when the hook assembly rests on the strand allowing the gate assembly to close with the hook assembly and squeeze the strand between the gate assembly and the hook ass...