ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,559,184, issued on Feb. 24, was assigned to YAZAKI KAKO Corp. (Shizuoka, Japan).
"Crawler unit and trolley for bad road using the same" was invented by Takeru Terada (Shizuoka, Japan), Takuya Nagano (Shizuoka, Japan) and Mitsuo Yazaki (Shizuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a lightweight crawler unit which is capable of swiveling, suitable for a trolley for bad roads, and used for transportation in muddy places such as snowy roads, sandy ground, and fields, and disaster sites. A crawler includes a plurality of inner attachments provided inside thereof toward a frame to have a band-shape, overhang edges 70 protruding i...