| 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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| 10/14/1998 | EP0795094A4 Rotary/linear converter |
| 10/07/1998 | CN1195391A 往复式机械 Reciprocating Machinery |
| 09/09/1998 | EP0862685A1 Combination internal combustion and steam engine |
| 09/08/1998 | US5803041 Rotary engine |
| 09/02/1998 | EP0861976A2 Gear drive for converting linear motion into rotary motion especially for an internal combustion engine |
| 09/01/1998 | US5799628 Internal combustion engine with rail spark plugs and rail fuel injectors |
| 08/27/1998 | WO1998037309A1 Multiple shaft engine |
| 08/26/1998 | EP0797728B1 Two-stroke internal combustion engine |
| 08/25/1998 | US5797362 Combustion engine with adjustable cam and lubrication means |
| 08/19/1998 | CN1191008A Opposed piston combustion engine |
| 08/18/1998 | CA2129768C Piston compressor |
| 08/13/1998 | DE19742779A1 Internal combustion engine to drive oil pump or similar equipment |
| 07/29/1998 | EP0753111B1 Free inertia forces balancing piston engine |
| 07/28/1998 | US5785029 Reciprocating piston engine, especially internal combustion engine, with hypcycloidal shaft drive |
| 07/22/1998 | CN1188529A Connecting-rod bearing with eccentric and coiled spring system |
| 07/21/1998 | US5782213 Internal combustion engine |
| 07/16/1998 | DE19700939A1 Crank drive for engines |
| 07/15/1998 | EP0840844A4 Free piston engine |
| 07/14/1998 | US5778834 Opposed reciprocating piston internal combustion engine |
| 07/01/1998 | CN1186536A Tri-lobed cam engine |
| 07/01/1998 | CN1186535A 自由活塞发动机 Free piston engine |
| 06/25/1998 | WO1998027364A1 'butterfly converter' for interconverting reciprocating and rotary motions |
| 06/23/1998 | US5769048 Rocking piston engine and rocking-piston compressor |
| 06/18/1998 | WO1998026165A1 Assembly for direct connection of internal combustion engine and machine driven |
| 06/17/1998 | EP0847491A1 Machine such as an internal combustion engine, pump or compressor |
| 06/17/1998 | EP0847481A1 Piston engine with a hypocycloid piston stroke gear with watt guide, especially with pistons in opposed cylinders |
| 06/17/1998 | EP0746706A4 Improved conjugate drive mechanism |
| 06/10/1998 | EP0846849A1 Double circular slider crank reciprocating piston internal combustion engine |
| 06/10/1998 | EP0846226A1 Reciprocating machine |
| 06/09/1998 | US5762480 Reciprocating machine |
| 05/20/1998 | CN2282093Y 旋转活塞结构 Rotary piston structure |
| 05/13/1998 | EP0840844A1 Free piston engine |
| 05/12/1998 | US5751587 Method for creating a conjugated profile corresponding to a conjugate surface in a motion conversion device |
| 05/06/1998 | EP0839266A1 Opposed piston combustion engine |
| 04/16/1998 | WO1998015721A1 Method and system of converting thermal energy into a useful form |
| 04/16/1998 | CA2266988A1 Method and system of converting thermal energy into a useful form |
| 04/08/1998 | EP0834023A1 Connecting-rod bearing with eccentric and coiled spring system |
| 04/08/1998 | EP0834007A1 Tri-lobed cam engine |
| 04/08/1998 | CN1178574A Hypocycloidal crank mechanism for piston engines, engines especially for opposed-cylinder IC engines |
| 04/07/1998 | US5735128 Cryogenic refrigerator drive |
| 04/02/1998 | WO1998013581A1 An engine |
| 04/02/1998 | DE19641586C1 Crank drive producing pear-shaped track for connecting rod bearings in piston engines |
| 04/01/1998 | EP0728270A4 Motion arrester for a conjugate drive mechanism |
| 03/18/1998 | EP0829660A2 Apparatus for interconversion of circular and reciprocal motion |
| 03/18/1998 | EP0829618A1 Internal combustion interne |
| 03/17/1998 | US5727513 Hypocycloidal crank transmission for piston engines, particularly internal-combustion engines |
| 03/05/1998 | WO1998009060A1 Liquid gas engine |
| 03/05/1998 | DE19635248A1 Flüssiggasmotor LPG engine |
| 03/05/1998 | CA2262555A1 Liquid gas engine |
| 02/25/1998 | CN1174590A Tw0o-stroke internal combustion engine |
| 02/25/1998 | CN1174589A Reciprocating piston engine, especially internal combustion engine with hypocycloidal crank shaft drive |
| 02/19/1998 | WO1998006932A1 Improvements in axial piston rotary engines |
| 02/18/1998 | CN1173907A Reciprocating piston engine with adjacent cylinders in the crankshaft direction in an engine case |
| 02/12/1998 | DE19631978A1 Hypocycloid drive system especially for internal combustion engine |
| 02/11/1998 | EP0823018A1 Fuel injection device for internal combustion engines |
| 02/11/1998 | EP0680546B1 Internal combustion rotary piston engine |
| 02/05/1998 | WO1998004821A1 Rotational motion mechanism and engine |
| 01/22/1998 | WO1998002677A1 Bearing arrangement |
| 01/22/1998 | WO1998002647A1 Power machine lubrication |
| 01/22/1998 | WO1998002644A1 Power machine valve control |
| 01/22/1998 | WO1998002640A1 Power machine |
| 01/22/1998 | WO1998002639A1 Air cooled power machine |
| 01/22/1998 | CA2260141A1 Air cooled power machine |
| 01/21/1998 | EP0749522A4 Low compression ratio internal combustion engine |
| 01/21/1998 | CN1171144A Reciprocating machine |
| 01/21/1998 | CN1171143A Oscillating piston engine and oscillating piston compressor |
| 01/20/1998 | US5709088 Engine |
| 01/14/1998 | CN1170078A Three piling piston driver |
| 01/13/1998 | CA2181098A1 Engine having a pair of flywheels |
| 01/08/1998 | WO1998000633A1 Machine such as an internal combustion engine, pump or compressor |
| 01/08/1998 | DE19626938A1 Star-shaped piston cylinder assembly e.g. radial piston pump |
| 01/07/1998 | EP0815370A1 Hypocycloidal crank mechanism for piston engines, engines especially for opposed-cylinder internal combustion engines |
| 01/07/1998 | EP0793767A4 A reciprocating machine |
| 01/06/1998 | US5704332 Rotary engine |
| 01/02/1998 | DE19725227A1 Big-end yoke for connecting crankshaft with piston rod of stroke piston |
| 12/31/1997 | CN1169180A Rotary/linear converter |
| 12/30/1997 | US5702238 Direct drive gas compressor with vented distance piece |
| 12/18/1997 | WO1997047871A1 Connecting-rod and piston assembly |
| 12/18/1997 | WO1997047860A1 Piston engine with a hypocycloid piston stroke gear with watt guide, especially with pistons in opposed cylinders |
| 12/18/1997 | DE19623552A1 Hubkolbenmaschine mit einem Hypozykloiden-Kolbenhubgetriebe mit Watt'scher Führung, insbesondere mit Kolben in gegenüberliegenden Zylindern Reciprocating piston engine with a hypocycloid-Kolbenhubgetriebe with Watt's management, in particular with pistons in opposite cylinders |
| 12/10/1997 | EP0811114A1 Improved cooling for gaz turbine - two stroke piston compound engine |
| 12/04/1997 | WO1997045657A1 Piston mechanism |
| 12/03/1997 | EP0809750A1 Reciprocating piston engine, especially internal combustion engine, with hypocycloidal crank shaft drive |
| 12/03/1997 | EP0809749A1 Reciprocating piston engine with adjacent cylinders in the crankshaft direction in an engine case |
| 11/26/1997 | EP0793773A4 Ion electromagnetic engine |
| 11/20/1997 | WO1997043529A1 Internal combustion engines |
| 11/12/1997 | EP0717812B1 Engine |
| 11/06/1997 | DE19617207A1 Four-stroke engine |
| 11/05/1997 | EP0804684A1 Compressor |
| 11/04/1997 | US5682853 Combination piston and rod |
| 11/04/1997 | US5682852 Internal combustion engine |
| 10/23/1997 | WO1997039241A1 Reciprocating machine |
| 10/22/1997 | CN1162691A Piston power machine with variable compression ratio drived by eccentric gear assembly |
| 10/14/1997 | US5676037 Apparatus for mutual conversion between circular motion and reciprocalmotion |
| 10/09/1997 | WO1997037155A1 Transmission |
| 10/09/1997 | CA2249399A1 Transmission |
| 10/08/1997 | EP0799365A1 Oscillating piston engine and oscillating piston compressor |
| 10/07/1997 | US5673665 Engine with rack gear-type piston rod |
| 10/07/1997 | US5673560 Cooling for gas turbine-two stroke piston compound engine |
| 10/01/1997 | EP0797728A1 Two-stroke internal combustion engine |