ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,377,471, issued on Aug. 5, was assigned to SUGINO MACHINE Ltd. (Uozu, Japan).
"Tap holder" was invented by Minoru Ihara (Uozu, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A tap holder having a simple structure and high runout accuracy is provided. A tap holder includes: a body having a collet holder hole having an opening toward distal end; a tap collet received in the collet holder hole, the tap collet having a tap mounting hole located at a distal end portion, and a sleeve hole located at a basal end portion; a torque transmission mechanism that transmits rotation of the body to the tap collet; a first elastic body disposed between the body an...