ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,529,386, issued on Jan. 20, was assigned to VTEC Co. LTD. (Busan, South Korea).
"Vacuum ejector pump" was invented by Ho-Young Cho (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a vacuum ejector pump that operates through high-speed compressed air. The ejector pump includes an external 'C'-shaped clip for securely fixing a casing assembled to a nozzle body, an internal fastening groove and protrusion to prevent arbitrary rotation of the casing relative to the body, and a guide groove and protrusion to indicate the assembly orientation of the body and the casing. Additionally, a check valve that is organically coupled to t...