US Patent Issued to The Swatch Group Research and Development on June 10 for "Piezoelectric balance spring, and method for manufacturing the balance spring" (Swiss Inventors)

ALEXANDRIA, Va., June 18 -- United States Patent no. 12,326,693, issued on June 10, was assigned to The Swatch Group Research and Development Ltd (Marin, Switzerland).

"Piezoelectric balance spring, and method for manufacturing the balance spring" was invented by Alexandre Didier (Erlach, Switzerland), Francois Gueissaz (Cormondreche, Switzerland) and Elias Laforge (Neuchatel, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A piezoelectric balance spring (3) for a circuit (10) for self-regulating an oscillation frequency of an oscillating mechanical system (2, 3), or an energy recovery circuit or a motor circuit for actuating the movement or for the automatic maintenance thereof. The piezoelectric...