| Patents for F02B 53 - Internal-combustion aspects of rotary-piston or oscillating-piston engines (4,415) |
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| 02/25/1994 | EP0680551A4 Dual compression and dual expansion internal combustion engine and methodtherefor. |
| 02/24/1994 | DE4227786A1 Rotary piston machine or power unit - has six pistons arranged in star formation about seventh piston, creating small and large working chambers on rotation |
| 02/17/1994 | WO1994003714A1 Improved oscillating piston engine |
| 02/17/1994 | DE4226629A1 Rotary piston engine assembly - uses eight-section seat control rod working with curved disc |
| 02/17/1994 | DE4225932A1 Rotary IC engine with cylindrical bore - has rotating piston with pivot-mounted shaped combustion elements on outer rim |
| 02/09/1994 | EP0582555A1 Rotary internal combustion engine |
| 02/08/1994 | CA1326830C Rotary internal combustion engine |
| 02/08/1994 | CA1326829C Compound rotary internal combustion engine |
| 02/03/1994 | WO1994002724A1 Improved oscillating piston engine |
| 01/19/1994 | CN1080977A Ic engine with globoid worm rotor |
| 01/12/1994 | EP0577715A1 Rotary device with a toric chamber |
| 01/12/1994 | CN1080690A Composite multi-channel rotary internal combustion engine |
| 01/11/1994 | US5277158 Multiple vane rotary internal combustion engine |
| 12/29/1993 | CN1080020A IC engine with rotary combustion chamber |
| 12/21/1993 | US5271364 Rotary internal combustion engine |
| 12/21/1993 | US5271359 Gas fuel engine |
| 11/24/1993 | CN1078767A Sliding piston type rotor engine |
| 11/17/1993 | CN1022772C Combined impeller rotary engine |
| 11/10/1993 | EP0569289A1 Internal combustion engine with improved anti-knocking function |
| 11/09/1993 | US5259739 Non-reciprocating multi-piston engine |
| 11/03/1993 | EP0567451A1 Induction system for rotary engines, 2-stroke and other engines without valves, with translating throttle shutters. |
| 11/02/1993 | US5257599 External-internal rotary combustion engine |
| 11/02/1993 | CA1323840C Rotating cylinder block piston-cylinder engine |
| 10/28/1993 | WO1993021423A1 Remote combustion rotary engine |
| 10/20/1993 | CN1022502C Inner combustion engine with three-ring rolling rotator |
| 10/12/1993 | US5251596 Two stroke rotary internal combustion engine |
| 10/12/1993 | US5251595 Rotor engine |
| 10/12/1993 | US5251594 Nutating internal combustion engine |
| 10/01/1993 | CA2068198A1 Articulating plate rotary engine |
| 09/29/1993 | CN1022259C Flexible rotator engine |
| 09/28/1993 | US5247916 Rotary engine |
| 09/23/1993 | DE4208747A1 Four stroke cycle rotary piston engine - uses two pairs of pistons movable counter to each other |
| 09/17/1993 | CA2063110A1 Rotary machine with oval piston in triangular chamber |
| 09/16/1993 | WO1993018286A1 Internal combustion engine |
| 09/16/1993 | DE4207936A1 Rotary IC engine for gaseous or liquid fuel - has integrated starter and pump and uses set of four sealing and transposition rollers. |
| 09/15/1993 | CN1076251A Internal combustion engine with annular cylinder and rotary piston |
| 09/08/1993 | CN1076005A Nutating internal combustion engine |
| 09/02/1993 | WO1993017224A1 Positive displacement machine with reciprocating and rotating pistons, particularly four-stroke engine |
| 09/02/1993 | CA2130260A1 Positive displacement machine with reciprocating and rotating pistons, particularly four-stroke engine |
| 08/25/1993 | EP0556563A2 Internal combustion engine |
| 08/25/1993 | CN2140963Y Rotor motor |
| 08/19/1993 | WO1993016273A1 Rotary engine |
| 08/17/1993 | US5235945 Rotary engine system |
| 08/10/1993 | US5233954 Toroidal hyper-expansion rotary engine, compressor, expander, pump and method |
| 08/05/1993 | DE4244391A1 IC engine with rotary piston - uses four rails in square within housing, to produce rotary movement |
| 08/04/1993 | EP0554227A1 Engine with rotary pistons having a cyclic spend variation and driving means |
| 07/27/1993 | US5230307 Internal combustion engine having rotary engine body |
| 07/26/1993 | CA2087819A1 Internal combustion engine |
| 07/22/1993 | WO1993014300A1 Orientation-independent rotary-piston engine |
| 07/22/1993 | DE4201127A1 Piston engine with annular arcuated cylinders - has oppositely moving piston segments and scavenging ducts |
| 07/20/1993 | US5228414 Valveless two-stroke-cycle oscillating engine |
| 07/15/1993 | DE4200613A1 Lageunabhaengige rotationskolbenbrennkraftmaschine Lageunabhaengige rotation piston internal combustion engine |
| 07/08/1993 | WO1993013305A1 Nutating internal combustion engine |
| 07/08/1993 | WO1993013295A1 Rotary engine system |
| 07/08/1993 | CA2125654A1 Rotary engine system |
| 07/07/1993 | EP0550044A1 Nutating internal combustion engine |
| 07/01/1993 | CA2058617A1 Curved cylinders engine |
| 06/30/1993 | EP0548416A1 Rotary machine |
| 06/30/1993 | CN1073746A Intermittent gear rotary internal combustion engine |
| 06/30/1993 | CN1073745A Cylinder moving compression-ignition engine |
| 06/30/1993 | CN1073744A Two-stroke rotary polygonal piston engine |
| 06/30/1993 | CN1021469C Multifunctional semi-rotor internal combustion engine |
| 06/29/1993 | US5222992 Continuous combustion rotary engine |
| 06/29/1993 | US5222463 Oscillating piston engine |
| 06/24/1993 | WO1993012329A1 Rotary internal combustion engine |
| 06/24/1993 | DE4200146C1 IC engine with discontinuous inner combustion - has ring chamber divided by stop plate, rotating with rotor, and having gate for blade which drives rotor, which then drives drive shaft |
| 06/22/1993 | US5220893 Rotary internal combustion engine |
| 06/09/1993 | DE4140316A1 Rotary piston engine - has rotating piston with single lobe profile and valves with sliders at pre and post ignition stages |
| 06/09/1993 | DE4139969A1 IC engine of swashplate type - has swashplate, with central divider to form two working chambers, and sealing rail |
| 06/02/1993 | CN2135065Y Rotary round rotor engine |
| 05/27/1993 | WO1993010332A1 Multichamber turbo engine |
| 05/27/1993 | DE4239074A1 Four-stroke rotary swivel piston engine - has integrated drive unit fixed to inner bearing unit with internal crown gear engaging with drive gear and intermediate gears |
| 05/26/1993 | CN2134492Y Practical rotary piston engine |
| 04/29/1993 | WO1993008389A1 Rotary-piston internal combustion engine |
| 04/29/1993 | WO1993008388A1 Rotary internal combustion engine |
| 04/29/1993 | WO1993008387A1 Piston engine |
| 04/20/1993 | US5203858 Alternating velocity rotary engine employing a gear control mechanism |
| 04/20/1993 | US5203307 Rotary wankel type engine |
| 04/20/1993 | US5203297 Rotary engine |
| 04/20/1993 | US5203287 Oscillating piston engine |
| 04/15/1993 | WO1993007374A1 Rotary stirling cycle engine |
| 04/06/1993 | US5199863 Sealing of an eccentric bearing of a rotary piston internal combustion engine |
| 04/06/1993 | US5199391 Toroidal internal combustion engine |
| 04/01/1993 | DE4231812A1 IC engine with two-stage gas expansion - is continuously supplied with compressed combustible gas from compressor and combustor assembly |
| 03/31/1993 | CN2128970Y Engine with slide block roter |
| 03/31/1993 | CN1070451A Three-stroke rotary ball-ring engine |
| 03/23/1993 | US5195466 Method for the controlled addition of an additive to the fuel supply of a vehicle internal combustion engine |
| 03/18/1993 | WO1993005290A1 Internal combustion engine having opposed pistons |
| 03/18/1993 | WO1993003257A1 Circular rotary engine |
| 03/18/1993 | CA2115139A1 Circular rotary engine |
| 03/17/1993 | CN1070031A 轴承式发动机 Bearing engine |
| 03/16/1993 | US5193502 Self-starting multifuel rotary piston engine |
| 03/10/1993 | EP0530771A1 Rotary engine |
| 03/04/1993 | WO1993004271A1 Rotary engine |
| 02/25/1993 | DE4203091C1 Rotary piston I.C. engine of trochoidal design - has injection nozzle in front of axis-near zone of casing jacket track, seen in piston rotary sense, and spark plug beyond this zone |
| 02/24/1993 | EP0528747A1 Rotary internal combustion engine |
| 02/17/1993 | EP0527146A1 A double acting, rectangular faced, arc shaped, oscillating piston quadratic internal combustion engine or machine |
| 02/17/1993 | CN1069099A 旋转活塞式内燃机 Rotary engine |
| 01/26/1993 | US5181490 Rotary engine |
| 01/26/1993 | US5181489 Rotary engine |