ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,436,183, issued on Oct. 7, was assigned to SEMES Co. LTD. (Cheonan-si, South Korea).
"Tray elevating and lowering apparatus of test handler" was invented by Jin Ho Kang (Cheonan-si, South Korea) and Joo Hyun Seo (Cheonan-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A tray elevator of a test handler includes a tray mounter on which a test tray is seated and having a support part and a through hole vertically penetrating the support part, a shaft vertically extending through the through hole of the tray mounter and configured to provide a path for elevating or lowering the tray mounter, a guide bushing including an outer surface and a gro...