| Patents for F02B 55 - Internal-combustion aspects of rotary pistons; Outer members for co-operation with rotary pistons (1,252) |
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| 09/21/1995 | DE4409212A1 Double rotary piston IC engine for vehicle |
| 08/24/1995 | DE4405311A1 IC engine |
| 08/24/1995 | DE19502506A1 Combination of rotary piston systems for IC engines |
| 07/11/1995 | US5431551 Rotary positive displacement device |
| 06/22/1995 | DE4442018A1 Rotary piston system for pumps, turbines and IC engines |
| 06/01/1995 | DE4437740A1 Rotary motor for producing high turning moment from low numbers of revolutions |
| 05/30/1995 | US5419691 Rotary engine piston and seal assembly |
| 05/16/1995 | US5415141 Rotary engine with radially sliding vanes |
| 04/20/1995 | DE4343165A1 Rotary piston engine |
| 04/20/1995 | DE4335878A1 Rotary piston engine |
| 03/22/1995 | CN1100494A Recoiling rotary internal combustion engine |
| 03/21/1995 | US5399078 Planetary-motion engine |
| 03/14/1995 | US5397224 Elongated roller side seals for a rotary engine |
| 02/21/1995 | CA2070625C Inline rotary piston engine |
| 02/21/1995 | CA1334488C Sintered apex seal material |
| 01/12/1995 | DE4322097A1 Rotary cylinder reciprocating piston engine |
| 01/05/1995 | WO1995000761A1 Rotary positive displacement device |
| 12/22/1994 | DE4320461A1 Internal combustion engine |
| 12/22/1994 | DE4320423A1 Rolling-piston machine |
| 12/22/1994 | DE4320355A1 Engine |
| 12/22/1994 | DE4319747A1 Internal combustion engine for improving the conversion of heat or pressure energy into mechanical energy with a rotating multi-cell (-chamber) space as combustion spaces with alternate usage of the combustion space in accordance with the number of chambers and mixing cell |
| 12/13/1994 | US5372107 Rotary engine |
| 11/01/1994 | US5359971 Rotary steam/internal combustion engine and rotary hydraulic motor |
| 10/27/1994 | DE4313099A1 Hydrogen engine |
| 10/19/1994 | CN1093773A Swing-rotor type machine |
| 10/04/1994 | US5352295 Rotary vane engine |
| 09/29/1994 | WO1994021907A1 Rotary internal combustion engine |
| 09/15/1994 | DE4401285A1 Internal combustion engine |
| 09/13/1994 | US5345905 Method of operating a rotary internal combustion engine |
| 09/06/1994 | US5343838 Dual radius rotor for pre-mixed-charge rotary engine combustion |
| 08/25/1994 | DE4305669A1 Elliptical rotary internal combustion engine |
| 08/18/1994 | DE4304423A1 Heat engine |
| 07/14/1994 | DE4300410A1 Rotational force expansion machine performing work |
| 05/19/1994 | DE4238218A1 Rotary piston combustion engine - has triangular piston rotating about eccentric in rectangular housing which is bounded by drive and driven aggregates |
| 05/04/1994 | EP0594849A1 Rotary piston internal combustion engine |
| 02/10/1994 | DE4330033A1 Triple disc rotary piston IC engine - has functions controlled by slits which are opened and closed by disc pistons, has ignition chamber outside of housing and joined to compression and expansion chambers by openings |
| 01/27/1994 | DE4226063A1 Circular piston combustion engine - has main and auxiliary discs with control edges set at 180 degrees to each other |
| 01/11/1994 | US5277158 Multiple vane rotary internal combustion engine |
| 12/01/1993 | EP0571637A1 Rotary engine |
| 11/24/1993 | CN1078767A Sliding piston type rotor engine |
| 11/17/1993 | CN1022772C Combined impeller rotary engine |
| 11/16/1993 | US5261365 Rotary internal combustion engine |
| 11/10/1993 | EP0569289A1 Internal combustion engine with improved anti-knocking function |
| 11/09/1993 | CA2068302A1 Revolving-rotating vane meter-motor-pump |
| 10/12/1993 | US5251595 Rotor engine |
| 09/23/1993 | DE4208747A1 Four stroke cycle rotary piston engine - uses two pairs of pistons movable counter to each other |
| 08/05/1993 | DE4302141A1 Rotary piston engine assembly - has piston made of two steel plates on drum, which rotate within air-tight steel housing drum |
| 07/20/1993 | US5228414 Valveless two-stroke-cycle oscillating engine |
| 07/07/1993 | CN1074017A Heat transducer |
| 06/24/1993 | WO1993012330A1 Rotary 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 |
| 06/12/1993 | CA2083591A1 Spark ignition engine with rotary piston |
| 06/09/1993 | DE4140316A1 Rotary piston engine - has rotating piston with single lobe profile and valves with sliders at pre and post ignition stages |
| 04/06/1993 | US5199863 Sealing of an eccentric bearing of a rotary piston internal combustion engine |
| 03/17/1993 | CN1070032A Two stroke air-inlet fixed main shaft triangle rotor engine |
| 01/26/1993 | US5181489 Rotary engine |
| 12/10/1992 | WO1992021867A1 A continuous stroke cycle, rotary engine |
| 12/08/1992 | US5168846 Rotary engine with variable displacement |
| 11/18/1992 | CN1066318A Combination type rotary blade engine |
| 09/03/1992 | WO1992014909A1 Rotary piston internal combustion engine |
| 08/19/1992 | CN1063744A Ceramic rotary piston ingine |
| 08/18/1992 | US5138993 Rotary wavy motion type engine |
| 07/29/1992 | CN2111371U Rotary balance internal-combustion engine |
| 06/23/1992 | US5123387 Rotary engine with inserts in rotor faces |
| 06/16/1992 | US5121721 Rotary engine |
| 06/02/1992 | US5117788 Apparatus for control of pressure in internal combustion engines |
| 03/31/1992 | US5100309 Cooling medium pump of a rotary piston internal combustion engine |
| 03/24/1992 | US5098748 Nickel, chromium and carbide powders, granulated and sintered |
| 03/17/1992 | US5095869 Apparatus for control of pressure in internal combustion engines |
| 03/12/1992 | DE4029144A1 Rotary-type IC engine - incorporates combustion chamber in which fuel burns continuously |
| 03/04/1992 | CN1059185A Snail shell type unsymmetrical internal combustion engine |
| 02/26/1992 | EP0472092A1 Rotor for rotary engine |
| 02/13/1992 | DE4025406A1 Rotary compressor or IC engine - has housing containing working rotor and synchronous rotor with fixed rotation ratio |
| 02/12/1992 | CN1058633A Internal combustion engine with fractional gear transmission and arc-cylindrical rotating piston |
| 02/06/1992 | DE4024270A1 Rotary piston IC engine - has two=stroke working during rotation of eccentric shaft |
| 01/08/1992 | CN1057701A Internal combustion engine with "taiji" type rotor |
| 12/17/1991 | US5072705 Rotary engine and method |
| 11/28/1991 | WO1991018193A1 Rotary engine |
| 10/23/1991 | CN1055578A High-speed rotary engine |
| 10/01/1991 | US5052356 Method for control of pressure in internal combustion engines |
| 08/08/1991 | DE4003675A1 Revolving piston IC engine - has enclosing sealed insert installed on eccentric of shaft between ring gear and pinion of synchronous gear |
| 08/08/1991 | DE4003663A1 Rotary piston IC engine - has body of eccentric bearing has bores on both sides on its axial inner edges which line up with bores in piston |
| 06/13/1991 | DE3940856A1 Rotary piston IC engine - has swinging arm driven by rotating cam which compresses air and fuel mixture |
| 05/22/1991 | CN1051610A Double-cylinder engine |
| 05/01/1991 | CN1051072A 转子发动机 Rotary engine |
| 04/30/1991 | US5011387 Rotary piston internal combustion engine |
| 03/19/1991 | CA1281604C Rotary engine cooling system |
| 03/13/1991 | EP0416977A1 Rotary combustion engine |
| 02/07/1991 | DE3926463A1 Rotary piston in IC engine - operates in combination with reciprocating piston |
| 11/28/1990 | CN1010603B Supercharging gear internal-combustion engine |
| 11/22/1990 | EP0397996A2 Internal combustion engine |
| 11/20/1990 | US4971533 Piston of a rotary piston engine |
| 11/13/1990 | US4969809 Lubrication system for an eccentric bearing of a rotary piston internal-combustion engine |
| 10/10/1990 | CN1046018A Wind cooling rotor type internal combustion engine |
| 10/09/1990 | CA1275014A1 Rotary engine cooling system with flow balancing |
| 08/22/1990 | EP0383143A2 Radial sealing |
| 08/22/1990 | CN1009293B Rotational piston type internal-combustion engine with separating strokes |
| 08/13/1990 | CA2008711A1 Apex seal with filled aperture (13496-ca) |
| 07/10/1990 | US4940400 Lubrication system for a rotary-piston internal combustion engine |
| 07/04/1990 | EP0376642A1 Rotary engine |