ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,426, issued on March 31, was assigned to Calbah Industries Pty Ltd (Australia).
"Crawler bridge" was invented by Chester Baker (Dandenong South, Australia).
According to the abstract* released by the U.S. Patent & Trademark Office: "A crawler bridge (10) having a bridge section (12) for bridging across opposite sides of a gap G. The bridge section (12) being connected to a support structure (14) which has a pair of elongate beams (16,17), that are spaced apart and generally parallel. The beams (16,17) each including leading and trailing feet (18,19). The bridge section (12) is attached to the beams (16,17) for relative movement forward and backward along the beams (16,17) and ve...