| Patents for F02B 57 - Internal-combustion aspects of rotary engines in which the combusted gases displace one or more reciprocating pistons (870) |
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| 04/28/1981 | US4263880 Rotary engine |
| 04/07/1981 | USRE30565 Internal combustion engine and operating cycle |
| 03/24/1981 | CA1098043A1 Rotary piston machine |
| 03/18/1981 | EP0025071A1 Reciprocating-piston engine |
| 03/17/1981 | US4256061 Two cycle rotary internal combustion engine and cylinder sealing ring arrangement therefor |
| 02/10/1981 | US4249487 Rotary internal combustion engine |
| 01/28/1981 | EP0022794A1 Rotating piston engine |
| 01/07/1981 | EP0020335A1 Internal combustion engine with rotating pistons |
| 11/27/1980 | WO1980002584A1 Rotary radial internal combustion engine |
| 11/04/1980 | CA1088810A1 Power converting devices |
| 07/29/1980 | CA1082603A1 Reciprocating rotary engine |
| 07/22/1980 | US4213427 Rotary engine |
| 07/10/1980 | WO1980001397A1 Rotating piston engine |
| 06/17/1980 | US4207736 Rotary piston machine |
| 05/29/1980 | WO1980001094A1 Internal combustion engine |
| 04/29/1980 | US4200084 Rotary piston engine |
| 04/01/1980 | CA1074702A1 Rotary engine |
| 12/18/1979 | US4178885 Rotary piston/cylinder engines |
| 11/29/1979 | WO1979000985A1 Internal combustion engine with rotating pistons |
| 11/13/1979 | US4174195 Rotary compressor and process of compressing compressible fluids |
| 06/26/1979 | CA1057199A1 Internal combustion engine |
| 06/05/1979 | US4157079 Internal combustion engine and operating cycle |
| 02/13/1979 | US4138930 Piston and cylinder machines |
| 01/30/1979 | US4136646 Two cycle rotary internal combustion engine |
| 01/23/1979 | US4135864 Rotary compressor and process of compressing compressible fluids |
| 12/12/1978 | US4129101 Internal combustion engine |
| 11/28/1978 | US4127096 Internal combustion engine |
| 10/31/1978 | CA1041432A1 Engine with compressor and bypass for combustible mixture |
| 09/12/1978 | US4112881 Rotary internal combustion engine employing compression ignition |
| 09/05/1978 | CA1037871A1 Piston and cylinder machines |
| 08/29/1978 | US4109618 Rotary piston power converting devices |
| 08/15/1978 | US4106443 Rotary internal combustion engine |
| 08/15/1978 | US4106354 Reciprocating engines, pumps or compressors |
| 03/14/1978 | US4079083 Vane type orbital engine |
| 03/14/1978 | US4078529 Rotary engine |
| 03/14/1978 | US4078526 Rotary piston engine |
| 03/07/1978 | US4077365 Expansible chamber apparatus |
| 02/07/1978 | US4072445 Rotary gas pressure engine system |
| 12/13/1977 | US4062330 Rotary engine intake and exhaust system |
| 11/08/1977 | US4056930 Internal combustion turbine |
| 10/04/1977 | US4051819 Rotary block engine |
| 08/23/1977 | US4043301 Internal combustion engine |
| 08/09/1977 | US4040398 Four-cycle rotary engine and method of operation therefor |
| 08/02/1977 | US4038953 Rotary internal combustion engine having rotary valve means for fuel and air introduction |
| 08/02/1977 | US4038949 Rotary-radial internal combustion engine |
| 06/21/1977 | US4030471 Opposed piston engine |
| 06/21/1977 | US4030458 Rotary piston engine |
| 05/17/1977 | US4023536 Method of controlling the timing of ignition in an internal combustion engine |
| 05/10/1977 | US4022168 Two-cycle rotary-reciprocal-engine |
| 05/10/1977 | US4022167 Internal combustion engine and operating cycle |
| 03/08/1977 | US4010719 Rotary internal combustion engine |
| 03/08/1977 | US4010675 Two stroke mechanism with rotary piston and cylinder-piston movement |
| 01/18/1977 | US4003352 Longitudinal-stroke internal combustion engines |
| 01/18/1977 | US4003351 Rotary engine |
| 11/16/1976 | US3991728 Rotary engine |
| 09/21/1976 | US3981280 Two-stroke combustion engines |
| 08/10/1976 | US3973531 Engine with compressor and bypass for combustible mixture |
| 07/27/1976 | US3971349 Fuel feed of rotary cylinder combustion engines |
| 07/20/1976 | US3970055 Uniflow-type external combustion engine featuring double expansion and rotary drive |
| 07/06/1976 | US3967599 Rotary internal combustion engine and method of cooling the same |
| 06/22/1976 | US3964450 Rotary cam internal combustion radial engine |
| 05/11/1976 | US3955544 Internal combustion engine |
| 03/23/1976 | US3945303 Hydrostatic piston machine |
| 03/09/1976 | US3942913 Rotating cylinder wheel and ball-piston wheel motor, generator, and pump assembly |
| 03/09/1976 | US3942488 Cam transmission internal combustion engine |
| 02/24/1976 | US3939809 Axial-piston combustion engine |
| 02/24/1976 | US3939808 Circular motion reciprocating engine |
| 02/17/1976 | US3938480 Internal combustion engine |
| 01/13/1976 | US3931810 Rotary-piston internal combustion engine |
| 01/13/1976 | US3931809 Rotary internal combustion engine |