ALEXANDRIA, Va., March 12 -- United States Patent no. 12,246,203, issued on March 11, was assigned to YEONEUN Co. LTD. (Gyeonggi-Do, South Korea).
"Sprinkler coupling structure" was invented by So Yeon Jeon (Hwaseong-si, South Korea) and Young Ae Song (Asan-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sprinkler coupling structure, including a reducing nipple configured to penetrate a through hole formed in a ceiling panel and manufactured integrally with a flexible pipe body whose upper side is connected from a water supply source and into which fire extinguishing water flows, a head coupled to a lower end of the reducing nipple and configured to spray the fire extinguishing water supplie...