| Patents for F01B 13 - Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion (1,025) |
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| 01/29/1997 | EP0650419B1 Hydraulic device |
| 01/22/1997 | EP0656992B1 Two-stroke rotary cylinder engine |
| 12/10/1996 | US5582090 Radial piston pump with rotary expansible chamber stage |
| 10/24/1996 | WO1996033342A1 Fuel-injected piston combustion engine |
| 09/26/1996 | WO1996029506A1 Axial piston machines |
| 08/27/1996 | US5549032 Low-pollution high-power external combustion engine |
| 08/14/1996 | CN1129027A Rotery internal combustion engine |
| 07/25/1996 | DE19514571C1 IC engine with high compression ratio |
| 06/11/1996 | US5524577 Rotary engine |
| 05/22/1996 | CN1122873A Axial plunger pump-motor |
| 04/02/1996 | US5503535 Hydraulic radial piston machines |
| 03/07/1996 | WO1996007023A1 Circular internal combustion engine |
| 01/04/1996 | DE4423761A1 IC engine with cylinders in cruciform arrangement |
| 01/02/1996 | US5479780 Circular internal combustion engine |
| 11/22/1995 | EP0682748A1 Volumetric fluid machine equipped with pistons without connecting rods |
| 10/11/1995 | EP0676009A1 Volumetric fluid machine equipped with pistons without connecting rods |
| 09/20/1995 | EP0672219A1 Rotary engine |
| 09/08/1995 | WO1995023922A1 Stirling engine with annular cam |
| 08/24/1995 | WO1995022683A1 Rotary type internal combustion motor |
| 08/24/1995 | CA2183360A1 Rotary type internal combustion motor |
| 08/23/1995 | EP0649495A4 Rotary power device. |
| 08/08/1995 | US5439356 Hydraulic motor and pump having hydraulic counter balancing means |
| 07/05/1995 | EP0672219A4 Rotary engine. |
| 06/14/1995 | EP0656992A1 Rotary cylinder engine. |
| 06/14/1995 | DE4421506C1 Radial piston engine |
| 05/24/1995 | EP0654584A1 Hydrostatic radial piston machine with axial thrust compensation |
| 05/03/1995 | EP0650419A1 Hydraulic drive and braking system. |
| 04/26/1995 | EP0649495A1 Rotary power device. |
| 03/28/1995 | US5400594 Slipper guide for a hydrostatic transmission |
| 03/15/1995 | EP0642626A1 Hydraulic radial piston machines |
| 02/23/1995 | WO1995005535A1 Rotary internal combustion engine |
| 02/21/1995 | US5391059 Radial piston motor or pump |
| 02/21/1995 | US5390496 Stirling engine with annular cam |
| 02/02/1995 | DE4432311A1 Reciprocating piston machine with rotating cylinder |
| 01/19/1995 | WO1995002114A1 Planetary gears reciprocating piston machines |
| 01/04/1995 | CN1097044A Hydraulic motor |
| 12/27/1994 | US5375564 Rotating cylinder internal combustion engine |
| 12/07/1994 | EP0627551A2 Rotary internal combustion engine |
| 11/22/1994 | US5365892 Rotary internal combustion engine |
| 11/10/1994 | WO1994025744A1 Rotary power device |
| 10/19/1994 | EP0620358A1 Hydraulic motor |
| 10/13/1994 | WO1994023189A1 Rotary internal combustion engine |
| 10/13/1994 | DE4326131A1 Reciprocating piston engine |
| 10/05/1994 | EP0564500B1 A radial piston motor or pump |
| 10/05/1994 | EP0561933B1 A radial piston motor or pump |
| 09/29/1994 | WO1994021907A1 Rotary internal combustion engine |
| 09/13/1994 | US5345905 Method of operating a rotary internal combustion engine |
| 09/07/1994 | CN1025875C Fluid cell arrangement for compressed air motors |
| 09/06/1994 | US5343832 Combination rotary internal combustion engine and ducted fan |
| 08/04/1994 | WO1994002334A3 Hydraulic drive and braking system |
| 07/21/1994 | DE4301036A1 Heat engine |
| 07/19/1994 | CA1330762C Improved rotary vee engine |
| 06/29/1994 | CN1088654A 空气发动机 Air engine |
| 05/26/1994 | WO1994011625A1 Combination rotary internal combustion engine and ducted fan |
| 05/25/1994 | CN1024700C Low speed large torque hydraulic motor |
| 05/04/1994 | EP0595754A1 Improvements made in rotative motors |
| 04/19/1994 | US5303679 Rotary internal combustion engine |
| 03/17/1994 | WO1994005902A1 Rotary cylinder engine |
| 03/10/1994 | DE4229009A1 Combustion engine with rotatable cylinder - has crank drive shaft axis arranged parallel to cylinder axis |
| 03/03/1994 | DE4228639A1 Zylinderläufermaschine Rotary cylinder machine |
| 02/24/1994 | DE4231482A1 Combustion-chamber housing for radial-piston engine - is sealed during compression stroke by valves operated by pressure generated by power stroke |
| 02/03/1994 | WO1994002725A1 Internal combustion engine |
| 02/03/1994 | WO1994002334A2 Hydraulic drive and braking system |
| 02/03/1994 | DE4224075A1 Hydraulisches Antriebs- und Bremssystem Hydraulic drive and brake system |
| 01/27/1994 | DE4224074A1 Verbrennungsmotor Combustion engine |
| 01/18/1994 | CA1326213C Radial-piston engine |
| 01/13/1994 | DE4222644A1 Rotary pump or motor - has rotating disk with four plungers inside cylindrical space whose eccentricity to shaft can be adjusted |
| 12/09/1993 | WO1993024734A1 Hydraulic radial piston machines |
| 11/16/1993 | US5261365 Rotary internal combustion engine |
| 10/28/1993 | WO1993021434A1 Rotary internal combustion engine |
| 10/13/1993 | EP0564500A1 A radial piston motor or pump. |
| 10/05/1993 | US5249512 hydrostatic pump and motor |
| 10/05/1993 | US5249507 Swash-plate plunger type hydraulic apparatus |
| 09/30/1993 | WO1993019284A1 Rotary engine |
| 09/29/1993 | EP0561933A1 A radial piston motor or pump. |
| 08/25/1993 | EP0477256B1 Piston engine |
| 08/24/1993 | US5237907 Radial piston machine having working fluid passing through the crankcase |
| 07/28/1993 | EP0348485B1 Pump or motor with at least one piston body provided in a cylindrical housing |
| 07/20/1993 | US5228294 Rotary internal combustion engine |
| 07/08/1993 | DE4243039A1 Rotary piston engine with rotating cylinder housing - has outer ring to which piston is attached and which rotates about parallel axis |
| 07/01/1993 | DE4143152A1 Radial piston machine with adjustable stroke ring - has oppositely placed sliding surfaces to engage grooves in stroke ring. |
| 06/10/1993 | WO1993011343A1 Bi-rotary engine |
| 06/01/1993 | US5214994 Seal ring with attached biasing means |
| 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 |
| 05/18/1993 | US5211138 Rotary internal combustion engine |
| 05/12/1993 | CN2132835Y Rotor plunger motor |
| 05/11/1993 | US5209190 Rotary power device |
| 05/06/1993 | DE4141737C1 Rotary hydraulic drive motor - has four single-acting cylinders in cruciform arrangement and pulse width modulation of oil supply |
| 04/29/1993 | WO1993008389A1 Rotary-piston internal combustion engine |
| 04/29/1993 | WO1993008387A1 Piston engine |
| 04/29/1993 | WO1993008373A1 Rotary machine |
| 04/14/1993 | CN1020297C Plunger-rotating type engine |
| 03/03/1993 | EP0368963B1 Piston machine |
| 02/16/1993 | US5186094 Pressurized fluid mechanism comprising at least two distinct operational cylinder capacities |
| 01/19/1993 | US5179889 Radial piston engine |
| 12/24/1992 | DE4119651C1 Opposed piston rotary IC-engine - has motor ring closing off outer ends of cylinder bores in which pistons reciprocate |
| 12/10/1992 | DE4118938A1 Rotary swing piston engine - has pistons which perform working stroke with each rotation of driving drum |
| 11/25/1992 | EP0514955A2 Improved rotary vee engine |
| 11/25/1992 | EP0514954A2 Rotary vee engine |
| 11/25/1992 | CN2122938U Fluted-roller slide motor |