ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,990, issued on March 18.
"Rotary combustion engine block sealing" was invented by Vaclav Knob (Prague).
According to the abstract* released by the U.S. Patent & Trademark Office: "A block sealing of a rotary combustion engine having a rotating block with radially located cylinders and pistons and an outside stationary case is disclosed. Transverse and/or lateral sealings located in the stationary case fit tight to an outer surface of the block. In circular grooves, a lateral sealing of radius sealing strips with springs situated between adjacent transverse sealing strips placed in transverse grooves is located. Couplings with notches and pressure springs are located in bores of ...