| Patents for F01C 3 - Rotary-piston machines or engines with non-parallel axes of movement of co-operating members (679) |
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| 02/25/1992 | US5090867 Rotating fluid machine for reversible operation from turbine to pump and vice-versa |
| 02/24/1992 | CA2049711A1 Compressed air radial motor |
| 02/12/1992 | CN2095941U Ball type volume changing machine |
| 02/12/1992 | CN1015483B Ball-type rotary pump and machine |
| 01/16/1992 | DE4127870A1 Rotating disc four stroke IC engine - is designed so that piston centre lines intersect |
| 01/14/1992 | US5080568 Positive displacement rotary machine |
| 11/27/1991 | CN1014921B Power conversion machine provided with pistons rotating in spherical housing |
| 11/13/1991 | EP0431168A4 Volume-expansion rotor machine |
| 10/03/1991 | WO1991014859A1 Working fluid rotating machine |
| 07/23/1991 | US5033429 Internal combustion engine |
| 06/12/1991 | EP0431168A1 Volume-expansion rotor machine |
| 06/12/1991 | CN2078807U Hemispherical oscillating rotary pump |
| 06/05/1991 | EP0429650A1 Volume-expansion steam rotor engine |
| 06/05/1991 | CN1012750B Power coversion machine having pistons which are moved in turning movement in spherical housing |
| 05/28/1991 | US5018952 Single screw mechanism with gaterotor housing at intermediate pressure |
| 05/28/1991 | US5018435 Fluid cell arrangement for compressed air motors |
| 04/17/1991 | EP0422159A1 Spherical rotary machine |
| 03/13/1991 | CN1012002B Threaded bolt compression (or expansion) machine using joggle-joint-set |
| 02/12/1991 | WO1991002145A1 Toroidal hyper-expansion rotary engine, compressor, expander, pump and method |
| 01/23/1991 | EP0408992A2 Rotating fluid machine for reversible operation from turbine to pump and vice-versa |
| 01/16/1991 | CN1048584A Fluid cell arrangement for compressed air motors |
| 01/09/1991 | EP0406478A1 Power cell arrangement for pressurized-air motors |
| 01/09/1991 | EP0293413B1 Power conversion machine having pistons which are moved in a turning movement in a spherical housing |
| 01/05/1991 | CA2018077A1 Fluid cell arrangement for compressed air motors |
| 12/27/1990 | EP0277114B1 Displacement machine |
| 12/25/1990 | US4979882 Spherical rotary machine having six rotary pistons |
| 11/29/1990 | WO1990014503A1 Volume-expansion steam rotor engine |
| 11/29/1990 | WO1990014502A1 Volume-expansion rotor machine |
| 10/17/1990 | CN1010046B Conical ring rotary piston pump |
| 09/20/1990 | WO1990010782A1 Spherical rotary machine |
| 09/05/1990 | CN1045149A Ball-type rotary pump or machine |
| 08/08/1990 | EP0381639A2 Power conversion machine provided with pistons rotating in a spherical housing |
| 07/25/1990 | CN1044149A Power conversion machine provided with pistons rotating in spherical housing |
| 07/18/1990 | CN2059456U Ball-type rotor pump or machine |
| 07/17/1990 | US4941811 Leakage path interconnection for single screw mechanisms |
| 07/10/1990 | WO1990007632A1 Power conversion machine with pistons rotating in pairs relative to each other in a spherical housing |
| 07/03/1990 | US4938025 Power conversion machine having pistons which are moved in a turning movement in a spherical housing |
| 04/24/1990 | US4919601 Waveform actuating air compressor |
| 02/14/1990 | CN1039643A Rotary piston pump with conical ring segment |
| 02/01/1990 | DE3825365A1 Rotary engine |
| 02/01/1990 | DE3825354A1 Rotary engine |
| 01/02/1990 | US4890989 Positive displacement machine with a plastic gate pinton |
| 12/13/1989 | CN1037946A Power conversion machine having pistons which are moved in turning movement in spherical housing |
| 12/05/1989 | US4884957 Displacement machine having displacement body and sealing members rotating on non-parallel axes |
| 10/25/1989 | CN1036620A Waveform actuating air compressor |
| 09/26/1989 | CA1261762A1 Rotary fluid-handling mechanism |
| 04/25/1989 | US4824348 Multiple tooth engagement single screw mechanism |
| 03/28/1989 | US4815432 Variable cavity fluid power device |
| 01/24/1989 | US4799870 Fluid power transfer device |
| 12/07/1988 | EP0293413A1 Power conversion machine having pistons which are moved in a turning movement in a spherical housing. |
| 11/23/1988 | EP0148823B1 Rotary positive displacement mechanism |
| 08/10/1988 | EP0277114A1 Displacement machine. |
| 06/02/1988 | WO1988003986A1 Power conversion machine having pistons which are moved in a turning movement in a spherical housing |
| 04/26/1988 | CA1235605A1 Toroidal motor/pump |
| 04/14/1988 | DE3634094A1 Hydraulic or pneumatic engine and machine |
| 03/02/1988 | EP0257043A1 A mechanism |
| 01/28/1988 | WO1988000642A1 Displacement machine |
| 01/26/1988 | US4721079 Rotary engine |
| 10/21/1987 | EP0241951A2 Rotary fluid-handling mechanism |
| 10/21/1987 | EP0241950A2 Rotary fluid-handling mechanism |
| 08/25/1987 | US4688522 Fluid power transfer device and fuel system therefor |
| 07/30/1987 | WO1987004495A1 A mechanism |
| 06/19/1987 | DE3543944A1 Internal combustion engine |
| 03/10/1987 | US4648813 Universally-movable machine part and fluid transfer apparatus utilizing same |
| 01/13/1987 | US4636157 Toroidal motor or pump |
| 01/06/1987 | US4634356 Rotary fluid-handling mechanism |
| 01/06/1987 | US4634355 Rotary fluid-handling mechanism |
| 12/23/1986 | US4631011 Fluid handling device useful as a pump, compressor or rotary engine |
| 12/23/1986 | CA1215580A1 Rotary positive displacement mechanism |
| 11/04/1986 | US4620515 Rotary fluid-handling mechanism constructed as an internal combustion engine |
| 09/10/1986 | EP0193530A1 Rotary piston machine |
| 09/03/1986 | CN85109065A Single threaded bolt compression (or expansion) machine using joggle-joint-set |
| 06/10/1986 | CN85109018A Rotary fluid-handling mechanism |
| 05/20/1986 | US4589388 Internal combustion engine |
| 04/01/1986 | US4579513 Positive displacement screw machine with separation wall attached to slide valve |
| 03/27/1986 | WO1986001856A1 Rotary piston machine |
| 02/18/1986 | US4571166 Control slide for a screw volumetric machine and a machine equipped therewith |
| 02/12/1986 | EP0171135A1 Rotary fluid-handling mechanism |
| 01/07/1986 | EP0148823A4 Rotary positive displacement mechanism. |
| 12/17/1985 | US4558669 Ignition apparatus for a rotary internal combustion engine |
| 10/22/1985 | US4548559 Rotary unit |
| 09/10/1985 | US4540343 Spherical gear pump |
| 09/04/1985 | EP0153766A1 Toroidal motor/pump |
| 08/13/1985 | US4534719 Volumetric screw-and-pinion machine and a method for using the same |
| 07/24/1985 | EP0148823A1 Rotary positive displacement mechanism. |
| 05/28/1985 | US4519756 Constant displacement turbine with vane which pivots and rotates |
| 05/14/1985 | US4516921 End seals for a rotary machine |
| 01/31/1985 | WO1985000405A1 Rotary positive displacement mechanism |
| 01/08/1985 | US4492542 Global worm machine with seizure-preventing cells |
| 12/11/1984 | US4487559 Hydraulic machine with retractable partitions and variable cubic capacity |
| 11/27/1984 | US4484872 Globoid-worm machine with tapered screw clearance near high pressure end seal |
| 10/09/1984 | US4475877 Globoid worm machine with metal ring in bearing housing |
| 09/11/1984 | US4470779 Rotary fluid machine with expandable rotary obturator |
| 09/11/1984 | US4470777 Volumetric machine with screw and pinion-wheels |
| 08/21/1984 | CA1172905A1 Displacement variation of hydraulic machines with retractable partitions |
| 07/31/1984 | US4462775 Rotary piston machine with mating frustoconical sealing surface |
| 06/27/1984 | EP0111619A1 Spherical gear pump |
| 03/20/1984 | US4437823 For use in pumps, compressors and motors |
| 01/31/1984 | US4428339 Rotary engine |
| 10/26/1983 | EP0091975A1 Rotary piston engine with two or more rotary pistons in parallel, angular or crossing arrangement |