ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,128, issued on June 30, was assigned to NIKKISO Co. LTD (Tokyo).
"Pump unit, pump system, and pump system operation method" was invented by Yasushi Kubota (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pump unit (2, 2A) is connected to a reservoir tank (T1) where liquid hydrogen and hydrogen gas generated by vaporization of the liquid hydrogen are stored and transfers the liquid hydrogen. The pump unit includes a rotation shaft (31), a motor (M) causing the shaft to rotate, an impeller (41) mounted on a front end (31a) of the shaft, a housing (30, 40) including a motor chamber (36) where the motor is accommodated and a pump chamber (43) whe...