| Patents for F01C 3 - Rotary-piston machines or engines with non-parallel axes of movement of co-operating members (679) |
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| 06/07/2000 | EP1005604A1 Rotary piston machine |
| 06/07/2000 | EP0763162B1 Rotary positive displacement engine |
| 03/22/2000 | EP0987402A1 Internal combustion rotorpiston engine |
| 03/16/2000 | CA2282203A1 Internal combustion rotor-piston engine |
| 03/14/2000 | US6036463 Rotary positive displacement engine |
| 03/09/2000 | WO2000012867A1 Internal combustion engine |
| 03/09/2000 | DE19654950C2 Gasdichtung für einen Rotationskolben-Verbrennungsmotor Gas seal for a rotary internal combustion piston engine |
| 02/24/2000 | WO2000009860A1 Driving system for machinery, such as a motor, compressor etc. |
| 02/17/2000 | WO2000008330A1 Thermal engine |
| 12/02/1999 | WO1999061753A1 Rotary engine and method for determining engagement surface contours therefor |
| 11/30/1999 | US5993182 Reversible converter of direction of movement and device for displacing volumes using said converter |
| 11/17/1999 | CN1235656A Rotor-reciprocating combustion engine |
| 11/10/1999 | EP0819835A4 Reversible converter of direction of movement and device for displacing volumes using said converter |
| 09/16/1999 | WO1998027317A8 Positive displacement pump |
| 09/16/1999 | DE19738132A1 Multi=element rotational compression machine |
| 09/01/1999 | EP0938626A1 Rotor-reciprocating combustion engine |
| 08/19/1999 | WO1998019060A9 Rotor-reciprocating combustion engine |
| 08/04/1999 | EP0933500A1 Rotary piston machine |
| 07/29/1999 | WO1999037886A1 Rotary machine |
| 06/02/1999 | EP0918922A1 Rotary piston system |
| 05/20/1999 | DE19837729A1 Rotary piston machine working as pump, compressor, turbine or engine |
| 05/14/1999 | WO1999023375A1 Karfidov's rotary engine and method for supplying combustible mixtures in the combustion chamber thereof |
| 03/04/1999 | WO1999010626A1 Rotary piston machine |
| 07/21/1998 | US5782624 For a rotary fluid machine |
| 06/25/1998 | WO1998027317A1 Positive displacement pump |
| 05/27/1998 | CN1183132A Reversible converier of direction of movement and device for displacing volumes using said converter |
| 05/26/1998 | US5755196 Rotary positive displacement engine |
| 05/07/1998 | WO1998019061A1 Internal combustion engine of the rotor-piston type |
| 05/07/1998 | WO1998019060A2 Rotor-reciprocating combustion engine |
| 05/07/1998 | CA2270397A1 Rotor-reciprocating combustion engine |
| 04/23/1998 | WO1998016723A1 Hemispherical engine |
| 02/26/1998 | WO1998007964A1 Rotary piston system |
| 02/19/1998 | DE19633174A1 Operating method for piston or working engines |
| 01/21/1998 | EP0819835A1 Reversible converter of direction of movement and device for displacing volumes using said converter |
| 12/16/1997 | CA2045400C Power conversion machine with pistons rotating in pairs relative to each other in a spherical housing |
| 11/20/1997 | WO1997043520A1 Engine annular link or annular drive link |
| 11/20/1997 | WO1997043519A1 Integral circular rotation internal combustion engine |
| 11/06/1997 | DE19600484A1 Rotary motor with annular piston |
| 09/24/1997 | EP0485465B1 Toroidal hyper-expansion rotary engine, compressor, expander, pump and method |
| 07/31/1997 | DE19603071A1 Piston engine for motor or compressor |
| 07/10/1997 | DE19600343A1 Rotary piston IC engine e.g. for Stirling engine with heating and cooling devices for working gases |
| 04/17/1997 | DE19649680A1 Valve-less rotary four stroke IC engine |
| 03/19/1997 | EP0763162A1 Rotary positive displacement engine |
| 10/10/1996 | WO1996031684A1 Reversible converter of direction of movement and device for displacing volumes using said converter |
| 10/10/1996 | CA2217219A1 Reversible converter of direction of movement and device for displacing volumes using said converter |
| 09/19/1996 | WO1996028641A1 Rotary positive displacement engine |
| 09/19/1996 | DE19509913A1 Rotary piston machine for pump |
| 07/25/1996 | WO1996022453A1 Engine |
| 07/25/1996 | DE19521528A1 Kraftmaschine Combustion engine |
| 05/07/1996 | US5513969 Rotary piston machine having engaging cycloidal gears |
| 04/25/1996 | DE19532869A1 Rotary engine with separate compression ignition and expansion chambers |
| 12/12/1995 | US5474043 Helicotoroidal vane rotary engine |
| 08/24/1995 | DE4405311A1 IC engine |
| 07/25/1995 | US5435705 Driving apparatus for a wobble plate machine |
| 04/11/1995 | US5404849 Spherical engine |
| 02/09/1995 | DE4325166A1 Cardan rotary engine |
| 01/26/1995 | DE4323345A1 Rotary internal combustion engine |
| 01/04/1995 | EP0632200A1 Drive mechanism for swash plate machine |
| 12/22/1994 | DE4319896A1 Rotary engine, prime mover and machine performing mechanical work and having pressure equalisation |
| 11/24/1994 | DE4411383A1 Drehkolbenmaschinen mit einem lagerfreien Kolbentriebwerk Rotary engines with a stock free piston engine |
| 11/21/1994 | CA2123933A1 Rotary piston machines with a bearingless power train and stressless sliding parts |
| 11/09/1994 | EP0623188A1 Rotary engine |
| 09/15/1994 | DE4401285A1 Internal combustion engine |
| 09/07/1994 | CN1025875C Fluid cell arrangement for compressed air motors |
| 08/18/1994 | WO1994018434A1 Fluid displacement apparatus |
| 07/14/1994 | DE4300410A1 Rotational force expansion machine performing work |
| 05/11/1994 | EP0485465A4 Toroidal hyper-expansion rotary engine, compressor, expander, pump and method |
| 05/10/1994 | US5309716 Rotary pump or engine with spherical body |
| 04/12/1994 | CA2059757C Rotary engine |
| 01/27/1994 | DE4226063A1 Circular piston combustion engine - has main and auxiliary discs with control edges set at 180 degrees to each other |
| 12/22/1993 | EP0575309A1 Internal combustion engine with oscillating pistons |
| 08/25/1993 | CN1075531A Ball-shape variable-capacitance machine |
| 08/10/1993 | US5233954 Toroidal hyper-expansion rotary engine, compressor, expander, pump and method |
| 07/22/1993 | WO1993014299A1 Rotary engine |
| 06/30/1993 | EP0548416A1 Rotary machine |
| 06/24/1993 | WO1993012325A1 Rotary-piston machine |
| 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 |
| 06/09/1993 | DE4139969A1 IC engine of swashplate type - has swashplate, with central divider to form two working chambers, and sealing rail |
| 04/28/1993 | EP0538449A1 Revolting-rotating vane meter-motor-pump |
| 04/27/1993 | US5205202 Compressed air radial motor |
| 04/06/1993 | US5199864 Spherical fluid pump or motor with spherical ball comprising two parts |
| 01/28/1993 | DE4124486A1 Compression turbine engine - has two flow paths, outer one for working process, inner one for cooling |
| 12/15/1992 | US5171142 Rotary displacement machine with cylindrical pretension on disc-shaped partition |
| 11/12/1992 | WO1992019844A1 Revolting-rotating vane meter-motor-pump |
| 11/05/1992 | DE4213858A1 Rotary-piston engine - has top regulator receiving piston and turning through semicircle with it before combustion and exit |
| 10/20/1992 | US5156541 Revolving vane pump-motor-meter with a toroidal working chamber |
| 10/15/1992 | DE4112058A1 Four-chamber rotary piston IC engine - has cylinder with divider discs and drive shaft carrying hollow bodies |
| 09/15/1992 | US5147193 Power conversion machine with pistons rotating in pairs relative to each other in a spherical housing |
| 07/21/1992 | US5131359 Rotating head and piston engine |
| 07/07/1992 | US5127810 Rotary pump or engine with spherical body |
| 06/30/1992 | US5125379 Rotary engine |
| 06/03/1992 | CN1061642A , |
| 06/03/1992 | CN1061641A Semi-spherical rotor pump with swing angle more than 290 deg |
| 06/02/1992 | CA1302377C Power conversion machine having pistons which are moved in a turning motion in a spherical housing |
| 05/21/1992 | DE4036768A1 Tangential disc piston pump, compressor or engine - has inner and outer pistons each acting as slider to other |
| 05/20/1992 | EP0485465A1 Toroidal hyper-expansion rotary engine, compressor, expander, pump and method. |
| 05/19/1992 | CA1301070C Fluid power transfer device |
| 05/03/1992 | CA2054783A1 Rotary machine |
| 04/15/1992 | CN1016261B Waveform actuating air compressor |
| 02/26/1992 | EP0472133A1 Compressed air radial engine |