ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,619, issued on April 22, was assigned to BAE Systems PLC (London).
"Heat engine system comprising a reservoir for receiving and supplying a working fluid from and to a compressor via a bleed valve and an intake valve" was invented by Jeremy Henry Owston (Barrow-in-Furness, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A heat engine system comprises a compressor, a heat source, and a turbine, each having an inlet and an outlet, and which collectively define part of a working fluid flow circuit. The system further comprises a housing operable to be sealed to define a reservoir in which the compressor, heat source, and turbine are located...