ALEXANDRIA, Va., March 26 -- United States Patent no. 12,261,402, issued on March 25, was assigned to YOKOWO Co. LTD. (Tokyo).
"Spring connector" was invented by Kenta Takahashi (Gunma, Japan), Yasushi Watanabe (Tokyo) and Kenji Endo (Gunma, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A spring connector includes: a tube; a movable pin having a distal end portion that protrudes from an opening of the tube, and having a hole portion that opens on a side opposite to a protruding direction; and a coil spring configured to bias the movable pin in the protruding direction. The coil spring includes an eccentric winding portion whose winding center is eccentric relative to an axial straight line connecting ...