US Patent Issued to WorkTools on Sept. 8 for "High efficiency torsion spring tacker" (California Inventor)

ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,728,509, issued on Sept. 8, was assigned to WorkTools Inc. (Chatsworth, Calif.).

"High efficiency torsion spring tacker" was invented by Joel S. Marks (Sherman Oaks, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A spring energized fastening tool with compact, rigid, low friction working elements is disclosed. A torsion power spring includes forward extending arms with the arms pressing each other proximate a front distal end of the spring. A cantilevered lever links to a handle and engages the spring adjacent to the striker. A bottom loading staple track unlatches and opens through a simple pulling-out action. Structures are provided to enable f...