| Patents for F01B 9 - Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to groups (2,571) |
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| 11/09/1993 | US5259256 Motion converter with pinion sector/rack interface |
| 11/03/1993 | EP0567552A1 A dual mode, phase shifting, cam engine |
| 11/03/1993 | EP0422082B1 Radial cylinder machine |
| 10/28/1993 | WO1993021422A1 Piston engine |
| 10/28/1993 | WO1993021421A1 Piston engine |
| 10/28/1993 | DE4311865A1 Reciprocating piston engine - has two=part connecting rod, which has top section with forked ends, to carry socket for support of pivot lever |
| 10/06/1993 | EP0563377A1 Mechanism for conversion of rotary motion of shaft into translational motion of executing members |
| 10/06/1993 | CN2143263Y IC engine with straight axis |
| 10/05/1993 | US5249506 Rotary piston machines with a wear-resistant driving mechanism |
| 09/30/1993 | DE4209690A1 Piston engine with inlet and outlet port - has piston face with sinusoidal groove in which cam in cylinder is operated to open/close ports |
| 09/23/1993 | DE4307205A1 Crank guide drive for IC engine - has bearing with roller moving in cage between crankpin sleeve and bearing race according to direction of linear motion |
| 08/26/1993 | DE4205283A1 IC engine etc. with hypocycloidal crank drive - has connecting rod big end bearing with bore for eccentric with bearing clearances of different sizes |
| 08/19/1993 | DE4204319A1 IC engine with external ignition - has two-part central shaft with end discs and central cage, which guides shaft, held eccentrically in discs |
| 08/17/1993 | US5236398 Wheelchair drive apparatus |
| 08/10/1993 | US5233949 Two-stroke cycle engine having linear gear drive |
| 08/03/1993 | US5231917 Wobble piston |
| 07/29/1993 | DE4201569A1 Two=stroke opposed-:piston engine without crank drive. - is started by moving magnet or linear motor, and drives rotary shaft via controlled slip coupling. |
| 07/28/1993 | EP0348485B1 Pump or motor with at least one piston body provided in a cylindrical housing |
| 07/20/1993 | US5228416 Internal combustion engine having opposed pistons |
| 07/15/1993 | DE4200707A1 Double or single acting reciprocating piston engine - has rocker arm between side of cylinder bore and crankshaft journal |
| 07/15/1993 | DE4200412A1 Piston engine working without crankshaft - has roller and disc drive to convert reciprocating motion to rotary movement. |
| 07/08/1993 | WO1993013336A1 Drive conversion |
| 06/29/1993 | US5222463 Oscillating piston engine |
| 06/24/1993 | WO1993012334A1 Internal combustion engines |
| 06/24/1993 | DE4142385A1 Hypocycloid drive for IC engine - has bearing journals for pairs of cylinders formed as part of crank cheeks |
| 06/15/1993 | US5218933 Internal combustion engines |
| 06/10/1993 | WO1993011342A1 Improved internal combustion engine |
| 06/09/1993 | EP0545333A1 Piston engine, especially an internal combustion engine, with hypocycloidal crank drive |
| 05/27/1993 | DE4227266A1 Crank guide drive gear for converting linear movement to rotary movement - has guide slit with unequal length outlets proportional to loads applied |
| 05/26/1993 | EP0530289A4 Rotary machine |
| 05/25/1993 | US5213025 Conical rod piston |
| 05/12/1993 | CN1072004A Arrangement for converting linear motion from power source to rotory motion |
| 05/05/1993 | EP0540490A1 An arrangement for converting linear motion from a power source to a rotary motion |
| 05/05/1993 | CN2131982Y Wangshi universal machinery |
| 04/29/1993 | WO1993008372A1 Internal combustion rotary piston engine |
| 04/29/1993 | DE4200495A1 Piston rod assembly with tumbler discs - has hollow lightweight piston with conical tip attached to camshaft ring |
| 04/28/1993 | CN1071489A Internal combustion engine without crankshaft |
| 04/20/1993 | US5203295 Internal combustion engine |
| 04/20/1993 | US5203287 Oscillating piston engine |
| 04/01/1993 | DE4226185A1 Internal combustion engine - has piston of rectangular cross-section and connecting rod formed integrally with piston |
| 03/17/1993 | EP0531335A1 Motion translation device of scotch yoke type |
| 03/10/1993 | EP0530289A1 Rotary machine. |
| 03/04/1993 | WO1993004269A1 Interconnecting rotary and reciprocating motion |
| 03/02/1993 | US5189994 Internal combustion engine |
| 02/16/1993 | US5186137 Rocking-piston machine |
| 01/07/1993 | DE4121683A1 Crank drive for piston engine - has minimum mass force of second order and has non-circular crank-pin |
| 12/30/1992 | EP0371022B1 Compound rotary internal combustion 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 | DE4216565A1 Engine with loop type crankshaft drive - has medium compression chamber with valves at rear of piston engaging with sealing plate |
| 12/09/1992 | EP0516727A1 Interconnecting rotary and reciprocating motion. |
| 12/02/1992 | EP0515427A1 System for achieving a four-stroke cycle with a single rotation of the crankshaft in an internal combustion engine. |
| 11/26/1992 | DE4116742A1 Piston connecting rod for IC engine - has crank bearing guide, to move compression-ignition-injection timing into favourable torque region |
| 11/19/1992 | EP0513324A1 System for reversibly transforming rotary motion into self-guided rectilinear motion. |
| 11/11/1992 | EP0512034A1 Crank mechanism |
| 11/11/1992 | CN1066103A Reciprocating pump compressor swing-stem rope driving transmission mechanism |
| 11/04/1992 | CN1065903A Crankless ic engine |
| 10/27/1992 | US5158047 Delayed drop power stroke internal combustion engine |
| 10/27/1992 | US5158046 Two-stroke cycle engine having linear gear drive |
| 10/20/1992 | US5156121 Piston-connecting rod assembly |
| 10/15/1992 | DE4111571A1 Articulated single- or double-acting motor - has four jointed bars hinged to work with guide rods moving in slots |
| 10/14/1992 | EP0508838A1 Reciprocating piston fluid-powered motor especially for windshield wiper |
| 10/14/1992 | CN2118822U Double crank double link piston system |
| 10/14/1992 | CN1065318A Fluid apparatus having plural cylinders |
| 10/06/1992 | US5152254 Internal combustion engine for vehicles |
| 09/17/1992 | DE4108311A1 Hypocycloidal drive with eccentric piston and guide cams - has cams coupled, by coupling arm, to guide links of linear drive, operating at right angles to piston motion |
| 09/15/1992 | US5146880 Radial cylinder machine |
| 08/27/1992 | DE4105020A1 Single axis rotary piston IC engine - uses lift curve cam guide to convert linear to rotary motion |
| 08/25/1992 | US5140953 Dual displacement and expansion charge limited regenerative cam engine |
| 08/06/1992 | WO1992013194A1 Multi-cylinder hydraulic device |
| 08/06/1992 | WO1992013178A1 A dual mode, phase shifting, cam engine |
| 07/23/1992 | DE4206518A1 Twin-cylinder IC engine - is balanced using two counter-rotating crankshafts geared together |
| 07/21/1992 | US5131353 Crank loop frame for a crank loop drive of an internal combustion engine |
| 07/21/1992 | CA1305338C Mechanism used to transform the reciprocating motion of a piston in a rotary motion of a shaft |
| 07/09/1992 | WO1992011449A1 Mechanism for conversion of rotary motion of shaft into translational motion of executing members |
| 07/09/1992 | DE4100256A1 Seal arrangement for piston rod bearing - has lubricating oil on rod removed during return storke of working piston |
| 07/01/1992 | EP0303649B1 Rocking-piston machine |
| 06/25/1992 | DE4042425A1 Crank-drive mechanism for engine - has drillings in crankpins and slides supplying lubricating oil to working surfaces |
| 06/23/1992 | US5123394 Rotary reciprocating internal combustion engine |
| 06/23/1992 | US5123334 Pump or motor with secondary piston connected to guide member of a main piston |
| 06/07/1992 | WO1992010696A1 System for reversibly transforming rotary motion into self-guided rectilinear motion |
| 06/07/1992 | CA2074941A1 System for reversibly transforming rotary motion into self-guided rectilinear motion |
| 06/04/1992 | DE4200684A1 Index-gear spur-rack system - has parallel facing spur rack sections |
| 06/04/1992 | DE4037651A1 Reciprocating piston IC engine - has piston coupled by two connecting rods to contra-rotating crankshafts coupled together |
| 05/14/1992 | WO1992008043A1 Piston connection for a reciprocating piston engine |
| 05/14/1992 | DE4035562A1 Piston cross thrust ring and crank slide - involves ring and slide assemblable on pins on body of crankshaft |
| 05/14/1992 | DE4035322A1 Axial piston IC engine - incorporates piston with at least two stages each in combustion chamber |
| 05/13/1992 | CN1061073A 内燃机 Internal combustion engine |
| 05/07/1992 | DE4035139A1 Eccentric shaft slide piece - has equalising ring with spars, and rotary cam |
| 05/06/1992 | CN1060889A Piston hanger for piston-machines |
| 04/23/1992 | DE4138210A1 Crank slide pin drive gear for converting to and fro motion - has parallelogram channel guide in steep plane |
| 04/16/1992 | DE4032217A1 Reciprocating piston IC engine - has cylinders and pistons arranged in circle surrounding drive shaft |
| 04/09/1992 | DE4031324A1 Drive system for pneumatic motor |
| 03/10/1992 | US5094202 Mechanism for converting reciprocating motion into rotary motion |
| 03/03/1992 | US5092131 Gas expansion engine |
| 02/19/1992 | EP0471451A1 Reciprocating piston device |
| 01/21/1992 | US5081964 Crankless internal combustion engine |
| 01/07/1992 | US5078017 Motion translation device of scotch yoke type |
| 12/31/1991 | US5076090 Dual action equalizing apparatus |
| 12/26/1991 | WO1991017374A3 Motion translation device of scotch yoke type |
| 12/19/1991 | DE4018943A1 Piston engine for use in regenerative cycles - produces optimum time slope using rotating eccentric transmission |