| Patents for F01B 3 - Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis (2,319) |
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| 04/07/1981 | USRE30565 Internal combustion engine and operating cycle |
| 03/31/1981 | US4258590 Wobble plate control for a variable piston displacement machine |
| 03/17/1981 | CA1097545A1 Connecting rod for axial cylinder-type reciprocating piston engine |
| 03/03/1981 | US4253380 Rotary manifold valve mechanism |
| 02/17/1981 | US4250843 Engine with revolutionary internal-combustion unit and compression ratio auto-controlled device |
| 01/28/1981 | EP0022860A1 Improved fluid power device |
| 11/25/1980 | US4235116 Balanced variable wobble plate drive |
| 11/13/1980 | WO1980002438A1 Parallel cylinder internal combustion engine |
| 10/16/1980 | WO1980002177A1 Cam driven engine |
| 10/14/1980 | CA1087454A1 Rotary fluid energy translating device |
| 09/23/1980 | US4223593 Hydraulic motor |
| 09/03/1980 | EP0015127A1 Fluid motor-pump assembly |
| 08/12/1980 | US4216704 Piston for a hydrostatic axial-piston machine |
| 07/24/1980 | WO1980001500A1 Improved fluid power device |
| 07/08/1980 | US4211148 Hot gas motor |
| 07/01/1980 | US4210063 Fluid power device |
| 07/01/1980 | US4209980 Wobble plate engine |
| 06/17/1980 | US4207779 Connecting rod for axial cylinder-type reciprocating piston engine |
| 05/20/1980 | US4203396 Barrel engine with rocking ball drive |
| 05/13/1980 | US4202251 Generator for flow rate of pressurized fluid |
| 04/08/1980 | US4196654 Pressure operated valve actuator |
| 04/08/1980 | CA1075042A1 Friction drive transmission |
| 03/18/1980 | US4193337 Pneumatic rotary actuator |
| 03/04/1980 | US4191095 Hollow piston for hydrostatic machines |
| 02/19/1980 | US4188859 Fluid drive mechanisms and methods |
| 01/29/1980 | CA1070527A1 Apparatus for variation of speed |
| 01/15/1980 | CA1069762A1 Thrust rings for swash plate pumps and motors |
| 01/01/1980 | US4181478 Seal life in rotary mechanisms |
| 12/25/1979 | US4180028 Fluid operated device |
| 11/28/1979 | EP0005566A1 Balanced variable displacement drive |
| 11/20/1979 | US4174684 Variable stroke internal combustion engine |
| 10/04/1979 | WO1979000741A1 Improving seal life in rotary mechanisms |
| 10/02/1979 | US4169436 Reciprocating machine with refrigerated cooling of intake air |
| 09/25/1979 | US4168653 Two position variable displacement motor |
| 09/18/1979 | US4167894 Steam engine in which the cylinder inlet valves are actuated by the operation of the power conversion means |
| 09/04/1979 | US4166398 Multi-cylinder machines |
| 09/04/1979 | CA1061717A1 Engine |
| 08/14/1979 | CA1060228A1 Power transmitting mechanism |
| 06/26/1979 | CA1057199A1 Internal combustion engine |
| 06/19/1979 | CA1056647A1 Control system for axial piston fluid energy translating device |
| 06/12/1979 | CA1056263A1 Variable delivery hydraulic equipment |
| 06/05/1979 | US4157079 Internal combustion engine and operating cycle |
| 05/08/1979 | US4152946 Transmission devices |
| 05/08/1979 | US4152945 Power transmitting mechanism |
| 05/08/1979 | US4152944 Piston type energy conversion machine |
| 04/17/1979 | US4149498 Internal combustion engine |
| 03/20/1979 | US4144771 Variable stroke piston type engine |
| 02/13/1979 | US4138930 Piston and cylinder machines |
| 02/06/1979 | US4138203 Swash plate compressor |
| 01/30/1979 | CA1047313A1 Rotary fluid motor |
| 12/12/1978 | US4129102 Opposed piston engine |
| 12/12/1978 | US4129064 Fluid operated stepping motor |
| 11/14/1978 | US4125058 Axial piston machine for adjustable stroke |
| 10/31/1978 | US4122757 Fluid operated engine |
| 10/24/1978 | US4121502 Hydraulic unit and transfer tube and seal structure therefor |
| 09/05/1978 | US4111103 Thrust rings for swash plate pumps and motors |
| 09/05/1978 | US4111102 Steam engine in which the cylinder inlet valves are actuated by the operation of the power conversion means |
| 09/05/1978 | CA1037871A1 Piston and cylinder machines |
| 08/22/1978 | US4108049 Variable torque fluid device |
| 08/22/1978 | US4108048 Axial piston pump or pumping machine |
| 08/22/1978 | US4107925 Stirling engine |
| 08/15/1978 | US4106354 Reciprocating engines, pumps or compressors |
| 07/25/1978 | US4102614 Machines for generating motion |
| 07/18/1978 | US4100815 Variable displacement piston engine |
| 06/27/1978 | US4096786 Rotary fluid energy translating device |
| 06/13/1978 | US4094202 Piston stroke varying mechanism for expansible chamber energy conversion machines |
| 05/23/1978 | US4090478 Multiple cylinder sinusoidal engine |
| 05/09/1978 | US4088033 Piston power generating machine |
| 05/02/1978 | US4086845 Variable delivery hydraulic equipment |
| 04/18/1978 | US4084555 Radial engine |
| 03/07/1978 | US4077269 Variable displacement and/or variable compression ratio piston engine |
| 02/28/1978 | US4076336 Hydrostatic bearings with controlled lubricant pressure |
| 01/03/1978 | US4066049 Internal combustion engine having a variable engine displacement |
| 11/29/1977 | US4060060 Valving system for compressors, engines and the like |
| 11/08/1977 | US4057007 Rotary fluid device having two rotor sections |
| 11/08/1977 | US4057006 Valve plate arrangement for hydrostatic piston machines |
| 11/01/1977 | US4056041 Control system for axial piston fluid energy translating device |
| 09/20/1977 | US4048903 Rotary hydraulic machine having a valve responsive to rotor bore pressure and stator port pressure |
| 08/23/1977 | US4043301 Internal combustion engine |
| 08/23/1977 | US4043255 Cam follower piston |
| 07/26/1977 | US4037521 Noise reduction |
| 07/19/1977 | US4036030 Assembly for the damping of flexural and torsional vibration in the shafts of machines |
| 07/12/1977 | US4034650 Axial piston type machine |
| 07/05/1977 | US4033238 Axial piston machine with a tiltable, revolving cylinder drum |
| 06/21/1977 | US4030404 Swash-plate drive mechanism |
| 06/14/1977 | US4029367 Bearing supporting a swashplate of a hydraulic axial cylinder machine |
| 05/31/1977 | US4026195 Axial piston machine of adjustable stroke |
| 05/24/1977 | US4024799 Axial-piston machine with improved bearing arrangement |
| 05/17/1977 | US4023542 Load responsive variable stroke internal combustion engine |
| 05/10/1977 | US4022168 Two-cycle rotary-reciprocal-engine |
| 05/10/1977 | US4022167 Internal combustion engine and operating cycle |
| 03/29/1977 | US4014250 Cylinder block positioning arrangement for a hydraulic axial piston machine |
| 03/22/1977 | US4012994 Axial bearing device for the cylinder barrel in an axial piston machine |
| 02/15/1977 | US4007662 Axial piston machine of oblique-axle construction with tiltable cylinder drum |
| 01/11/1977 | US4002104 Piston pump or motor having internal fluid filter |
| 12/28/1976 | US3999465 Magnet piston retention for free wheeling |
| 12/28/1976 | US3999402 Cam drive pump refrigerators |
| 11/30/1976 | US3994632 Rotary engine and pump |
| 11/16/1976 | US3991654 Hydraulic system for use in engines having reciprocating pistons and rotary piston rods |
| 11/09/1976 | US3990407 Explosively powered rotary tool |