US Patent Issued to Rolls-Royce on Oct. 6 for "Liquid hydrogen pump impellor assembly" (British Inventors)

ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,753,770, issued on Oct. 6, was assigned to Rolls-Royce plc (London).

"Liquid hydrogen pump impellor assembly" was invented by John R. Bawn (St. Albans, Great Britain) and Alexander D. Szymanski (Coventry, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "An impellor assembly for a liquid hydrogen pump. The assembly comprises a shaft, one or more impellors mounted to the shaft, a fastener configured to engage with the shaft at a first engagement point and with the one or more impellor at a second engagement point to axially clamp the one or more impellor to the shaft, an axially unconstrained length of the fastener being defined by an axial dis...