ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,504,021, issued on Dec. 23.
"Compressor with bypass for interstage passage" was invented by Ryuuta Tanaka (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A compressor includes a first impeller that compresses a gas, a second impeller that further compresses the gas and that directs the gas to a downstream region that is located downstream of the second impeller, an interstage passage that directs the gas from the first impeller to the second impeller, and a bypass passage that recirculates the gas from the downstream region of the second impeller to the interstage passage. The bypass passage has a downstream end that opens to the interstage passag...