US Patent Issued to Robert Bosch on Sept. 2 for "Multi piston machine with at least three switchable displacement volumes" (British Inventors)

ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,404,832, issued on Sept. 2, was assigned to Robert Bosch GmbH (Stuttgart, Germany).

"Multi piston machine with at least three switchable displacement volumes" was invented by David Hare (Kirkliston, Great Britain), Iain Edward (North Queensferry, Great Britain) and Johann Praeffcke (Scotlandwell, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A multi piston machine includes a rotor, pistons, a first control valve, and a second control valve. The pistons abut against a cam surface with multiple lobes. The machine is switchable between at least three non-zero displacement volumes using the first and the second control valves. The first contr...