US Patent Issued to The Boeing on Sept. 23 for "Inboard-mounted safety latch mechanism for preventing a walkway platform flip door from being raised without a guardrail installed" (Washington Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,741, issued on Sept. 23, was assigned to The Boeing Co. (Arlington, Va.).

"Inboard-mounted safety latch mechanism for preventing a walkway platform flip door from being raised without a guardrail installed" was invented by Don J. Russell (Arlington, Wash.) and Brennan J. Dunlap (Snohomish, Wash.).

According to the abstract* released by the U.S. Patent & Trademark Office: "In an example, a system is described. The system includes a guardrail having a post, and the post having a post dog. The system also includes a latch eye configured to be coupled to a flip door. The system also comprises a safety latch mechanism configured to be coupled to a fixed structure and including a body...