ALEXANDRIA, Va., June 5 -- United States Patent no. 12,276,058, issued on April 15, was assigned to MOBASE SUNSTAR Co. LTD (Incheon, South Korea).
"Embroidery machine thread tension adjusting device" was invented by Byeong Jun Son (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to an embroidery machine thread tension adjusting device. An embroidery machine thread tension adjusting device according to an embodiment of the present invention is provided for an embroidery machine comprising a needle bar, a thread take-up unit, a hook, and an embroidery frame, and is configured to adjust the tension of an upper thread withdrawn from a spool and supplied to a needle...