US Patent Issued to NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS on Oct. 27 for "Low-temperature airflow follow-up auxiliary sand discharge apparatus and method for cutting frozen sand mold" (Chinese Inventors)

ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,773,734, issued on Oct. 27, was assigned to NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS (Nanjing, China).

"Low-temperature airflow follow-up auxiliary sand discharge apparatus and method for cutting frozen sand mold" was invented by Zhongde Shan (Nanjing, China), Haoqin Yang (Nanjing, China) and Qinjiang Liu (Nanjing, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A low-temperature airflow follow-up auxiliary sand discharge apparatus for cutting a frozen sand mold includes a frozen sand mold to be machined, a hollow cutter, a spindle mounted on the hollow cutter, an air pipe, and a refrigeration apparatus connected to one end of the air pip...