US Patent Issued to SUZHOU SLAC PRECISION EQUIPMENT on Feb. 3 for "Punch and a die for stretching battery case body and stretching process therefor" (Chinese Inventors)

ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,535, issued on Feb. 3, was assigned to SUZHOU SLAC PRECISION EQUIPMENT Co. LTD (Suzhou, China).

"Punch and a die for stretching battery case body and stretching process therefor" was invented by Shu An (Suzhou, China), Yang Wang (Suzhou, China), Zhihua Yang (Suzhou, China) and Yin Wang (Suzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A punch and a die for stretching battery case body and its stretching process. The die includes a stepped punch as a male die, at least one thinning ring as a female die, and a variable-wall-thickness stretching step, which belongs to the thinning stretching. When the sheet or plate is stretched to the cup-s...