ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,333, issued on Dec. 30, was assigned to SUMITOMO HEAVY INDUSTRIES CONSTRUCTION CRANES Co. LTD. (Tokyo).
"Winch brake device" was invented by Kohei Honjo (Aichi, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A winch brake device that is used for a work machine and generates a braking force on the basis of a brake manipulation, includes a pressing member that brings braking members into pressure contact with each other to generate the braking force, a first brake cylinder that applies a first pressing force for bringing the braking members into pressure contact with each other to the pressing member, and a second brake cylinder that applies a s...