ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,766,675, issued on Oct. 20, was assigned to Stanley Black & Decker Inc. (New Britain, Conn.).
"Bi-directional screwdriver" was invented by Daniel Cheveralls (Huntersville, N.C.) and Christopher Laidlaw (Huntersville, N.C.).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a bi-directional screwdriver, the screwdriver may include a handle, a main housing, and a gearing assembly, which is mounted on the idle gear axle on the transmission seat and is fitted between the driving gear and the driven gear for transferring motion. When the grip ring is gripped and the handle is rotated to rotate the driving gear, the driving gear may rotate the driven gear in a ...