ALEXANDRIA, Va., June 12 -- United States Patent no. 12,298,064, issued on May 13, was assigned to QINGDAO HAIER SPECIAL REFRIGERATION ELECTRIC APPLIANCE Co. LTD. (Qingdao, China) and HAIER SMART HOME Co. LTD. (Qingdao, China).

"Self-balancing adjustable rack device and refrigerator having the same" was invented by Zhenxing Zhang (Qingdao, China) and Xueli Cheng (Qingdao, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention discloses a self-balancing adjustable rack device and a refrigerator having the same; the rack device includes a rack assembly, slide rail assemblies and a synchronizing assembly, the rack assembly includes a rack body and brackets, the slide rail assemblies are arra...