| 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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| 08/31/1976 | US3977303 Engines and compressors |
| 08/24/1976 | US3975988 Radial piston machine with pivoted connection between piston and piston shoes |
| 08/03/1976 | US3972268 Radial piston type pumps or motors |
| 07/27/1976 | US3971259 Fluid transducer |
| 07/13/1976 | US3968777 Internal combustion engine |
| 07/13/1976 | US3968734 Hydrostatic piston machine |
| 07/06/1976 | US3967599 Rotary internal combustion engine and method of cooling the same |
| 07/06/1976 | US3967535 Uniflow steam engine |
| 06/22/1976 | US3964450 Rotary cam internal combustion radial engine |
| 06/08/1976 | US3961563 Axial piston machine of the type having a tiltable cylinder block |
| 05/11/1976 | US3955544 Internal combustion engine |
| 05/11/1976 | US3955477 Hydrostatic piston machine having a guide for laterally guiding a cylinder block pintle |
| 05/04/1976 | US3954355 Rotary energy converter |
| 04/20/1976 | US3951047 Radial piston machine with piston shoes |
| 04/20/1976 | US3951044 Rotary radial piston machines with fluidflow supply in substantial axial direction |
| 04/13/1976 | US3949648 Rotary radial piston machine with radial extension on the piston shoe ends |
| 04/13/1976 | US3949647 Hydraulic mechanism, such as a motor or a pump, having radial pistons adapted to perform a plurality of strokes per revolution |
| 03/30/1976 | US3946706 Rotary machines comprising four cylinders in a star |
| 03/23/1976 | US3945346 Rotary diesel engine |
| 03/23/1976 | US3945303 Hydrostatic piston machine |
| 03/09/1976 | US3942913 Rotating cylinder wheel and ball-piston wheel motor, generator, and pump assembly |
| 03/09/1976 | US3942488 Cam transmission internal combustion engine |
| 03/09/1976 | US3942414 Hydraulic device |
| 02/17/1976 | US3938480 Internal combustion engine |
| 01/13/1976 | US3931810 Rotary-piston internal combustion engine |