ALEXANDRIA, Va., July 23 -- United States Patent no. 12,364,633, issued on July 22.
"Collapsible, portable litter" was invented by Otis McGregor (Monument, Colo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A collapsible, portable litter includes a support sheet and an expandable hub assembly. The support sheet has front and rear surfaces and a plurality of handles around a perimeter. Provided to the rear surface, the expandable hub assembly includes a hub and a plurality of stiffeners originating from the hub. An associated method includes pivoting a first folding stiffener in a first direction about a first pivot axis from a folded position to an extended position, pivoting a second folding stiffener in ...