ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,447,590, issued on Oct. 21, was assigned to Klein Tools Inc. (Lincolnshire, Ill.).
"Infinitely adjustable driver shank quick connect" was invented by Jerry C. Knauth (Mansfield, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A driver include: an axis, a shank with a handle engagement portion, and a handle configured to releasably and continuously adjustably fix the shank in position. The handle includes a sleeve with two slots axially oriented, first and second handle portions, a torsion spring between the handle portions, and two retaining balls riding in the two slots and disposed in the first handle portion and biased apart. With the first hand...