US Patent Issued to SEIKO EPSON on Nov. 11 for "Balance, timepiece, and method for manufacturing balance" (Japanese Inventor)

ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,468,259, issued on Nov. 11, was assigned to SEIKO EPSON Corp. (Japan).

"Balance, timepiece, and method for manufacturing balance" was invented by Akihiro Sawada (Matsumoto, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A balance includes a balance staff rotatably supported by a main plate, a collet fixed to the balance staff, and a hairspring fixed to the collet, the hairspring including a Grossmann curve disposed at a side of the collet and an Archimedes curve coupled to the Grossmann curve, and an impact-resistant member configured to suppress displacement of a shape of the Grossmann curve at least at the side of the collet."

The patent was fi...