ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,508,637, issued on Dec. 30.
"Coldwork holes with seamless sleeve and uniform expansion" was invented by Albert S. Kuo (Chesterfield, Mo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hole-coldworking apparatus has a seamless sleeve and a mandrel which have complementary taper angles. The apparatus has a spindle assembly with a fixed section and a translating section. The fixed section is rotated by a motor and in turn rotates the translating section, the spindle, and the sleeve. The translating section is moved by an actuator to extend and retract the mandrel relative to the axially fixed section and the sleeve. The complementary tapers for the sleev...