A rotor (24; 124; 224) for a Wankel engine (10) including a plurality of ribs (74; 76) extending from a bearing support (20) to each one of the flanks (72), the plurality of ribs (74; 76) including, for each flank (72), first (74) and second (76) ribs conn...

A planetary rotary type rotation device comprises a stator, a rotor, and a center sun wheel drum (10). The stator includes a hollow cylinder block (1) having a cylinder. The rotor includes a main shaft (3), planetary piston wheel fixation flanges (9), and ...