ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,054, issued on Feb. 17, was assigned to KAI U.S.A. LTD. (Tualatin, Ore.).
"Assisted opening and closing knife with lock" was invented by Andrew Russell Keel (Portland, Ore.) and James Duncan MacNair (Newberg, Ore.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A knife includes a handle and a blade that is rotatably coupled to the handle. A locking assembly is provided and includes a lock pin, an omega spring, and a transfer bar coupled between the lock pin and the omega spring for biasing the lock pin into a locking position to lock the knife closed or open. The locking assembly may further include a supplemental omega spring on an opposing side of ...