ALEXANDRIA, Va., June 4 -- United States Patent no. 12,320,442, issued on June 3, was assigned to LONGFIAN SCITECH Co. LTD. (Baoding, China).
"Magnet-driven fire damper for oxygenerator" was invented by Baozhu Shi (Baoding, China), Lei Shi (Baoding, China), Xiaoxiong Li (Baoding, China) and Bo Zhu (Baoding, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present application discloses a magnet-driven fire damper for an oxygenerator, which includes a rear valve housing, a front valve housing and a fusible valve core, and further includes a static magnet and a moving magnet, wherein the static magnet is fixedly mounted at a front end of a middle hole of the rear valve housing and does not affect the pa...