ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,413, issued on Feb. 10, was assigned to SMC Corp. (Tokyo).

"Residual pressure exhaust air circuit and residual pressure exhaust valve" was invented by Kazuhiro Noguchi (Tsukubamirai, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "[Object] To make it possible to detect, with a single pressure sensor, a malfunction of two solenoid valves for switching flow paths and to quickly and reliably exhaust residual pressure in an air device through a solenoid valve.[Solution] A residual pressure exhaust air circuit 1 includes: a main flow path 9 through which air from an air source 2 is supplied to an air cylinder 100; an exhaust flow path 10 through whi...