| Patents for F01M 13 - Crankcase ventilating or breathing (5,172) |
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| 02/25/1992 | US5090873 Crankcase oil separator |
| 02/25/1992 | US5090393 Pressure regulating valve for installation in a vent duct of an internal combustion engine |
| 02/19/1992 | EP0471142A2 Pressure regulating valve for the installation in a vent conduit of a combustion engine |
| 02/19/1992 | CN2096648U Oil-gas seperating room for petrol machine |
| 02/19/1992 | CN2096647U Self oil return respirator |
| 01/23/1992 | DE4122774A1 Oil orifice plate for IC engine crankcase breather - has integral support formed with orifice plate casing |
| 01/21/1992 | CA1294593C Disposable cartridges for centrifugal separators |
| 01/15/1992 | EP0466542A1 Cylinder block for an engine comprising a carter vapour evacuation and oil recycling circuit |
| 01/14/1992 | US5080303 Gearbox breather outlet |
| 01/14/1992 | US5080082 Pressure regulating valve for crankcase ventilation in an internal combustion engine |
| 01/14/1992 | CA1294154C Cast shafts, particularly camshafts |
| 01/07/1992 | US5078233 Oil supply system for machines such as internal combustion engines |
| 01/02/1992 | EP0463267A1 Intake device for internal combustion engine |
| 01/01/1992 | CN2091952U Oil-gas separator of gasoline engine |
| 12/17/1991 | US5072713 Filter for lowering harmful crankcase emissions in an internal combustion engine |
| 12/04/1991 | EP0459031A1 Pressure control valve for the carter ventilation of an internal combustion engine |
| 12/04/1991 | CN2089983U Ventilating and oil-saving valve for crankcase of gasoline engine |
| 12/03/1991 | US5069192 Internal combustion engine with crankcase ventilation system |
| 11/27/1991 | EP0458341A1 Cylinder head structure of DOHC engine |
| 11/26/1991 | US5067449 Fitted crankcase breather valve assembly |
| 11/12/1991 | US5063882 Oil separator for gases from a crankcase of an internal-combustion engine |
| 10/30/1991 | EP0454512A1 Purifying and recirculation system for blow-by gas of the crankcase of an internal combustion engine and internal combustion engine fit out with this system |
| 10/24/1991 | DE4012415A1 Crankcase for IC engine in vehicle - with oil separator channel connected to ventilation channel |
| 10/22/1991 | US5058542 Rocker box cover assembly for internal combustion engine |
| 10/08/1991 | US5054282 Drain assembly |
| 10/01/1991 | US5052354 Horizontally-opposed multiple-cylinder engine with a gas baffle |
| 09/25/1991 | EP0448431A1 Intake device and oil separator for an internal combustion engine and engine provided with this device |
| 09/10/1991 | US5046474 Crankcase ventilator/evacuation system |
| 08/07/1991 | EP0439923A1 Gearbox breather outlet |
| 07/30/1991 | US5035207 Cooling system for vehicle |
| 07/25/1991 | WO1991009251A3 Centrifugal separator |
| 07/24/1991 | CN2081432U Crankcase forced ventilating valve joint device |
| 07/10/1991 | EP0436079A1 Oil separator for gases of a carter of an internal combustion engine |
| 07/02/1991 | US5027784 PCV system with a check valve device |
| 06/27/1991 | WO1991009251A2 Centrifugal separator |
| 06/26/1991 | EP0434188A1 Crankcase oil separator |
| 06/18/1991 | US5024203 PCV oil separator system |
| 06/12/1991 | EP0430958A1 Device for equalizing pressure between machine housing and the surroundings. |
| 06/11/1991 | US5022376 Oil separator for crankcase fumes |
| 05/14/1991 | US5014654 Intake manifold for internal combustion engine |
| 05/07/1991 | CA2028498A1 Integrated induction system |
| 04/23/1991 | US5009212 Port fuel injection and induction system for internal combustion engine |
| 04/11/1991 | DE3932300A1 Connection between throttle tube and crankcase - incorporates press-fit pipe with swaged ridges |
| 04/09/1991 | US5005553 Internal combustion |
| 03/05/1991 | US4996956 Breather apparatus for internal combustion engines |
| 02/26/1991 | US4995891 Secondary air filter assembly |
| 02/19/1991 | US4993517 Oil-fill opening for introducing lubricating oil into an internal combustion engine |
| 02/19/1991 | US4993375 Engine cylinder head cover |
| 01/16/1991 | EP0407696A1 Crankcase breather and lubrication oil system for an internal combustion engine |
| 01/02/1991 | CN2068587U Oil-dropping dreathing apparatus |
| 01/01/1991 | US4981502 Oil-air separator |
| 12/20/1990 | DE4018601A1 Vent for cavities of valves, pistons or housings - has variable vol. chamber sealed from atmos. to store air compressed into and sucked out of cavities |
| 12/18/1990 | US4977870 Internal combustion engine |
| 12/13/1990 | DE3938919C1 Oil separator for vent gases from engine crankcase - comprises housing contg. rotation-symmetrical filter through which vent gas flows outwards to cleaning space |
| 12/13/1990 | DE3918785A1 IC engine air intake manifold - has branched air intake chamber and oil separator in crankcase ventilation system |
| 11/28/1990 | EP0399912A1 Valve cover with oil separator and method for producing same |
| 11/27/1990 | CA1276846C Blow-by gas processing device for internal combustion engine |
| 11/13/1990 | US4969434 Overhead-valve type internal combustion engine |
| 11/13/1990 | US4969422 Breather system for a balancer gear chamber of a two-cycle engine |
| 11/07/1990 | EP0395841A1 Filling opening for filling lubricating oil into an internal combustion engine |
| 10/30/1990 | US4966703 Cyclone separator |
| 10/30/1990 | CA1275603C Air cleaner with crankcase breather assembly |
| 10/04/1990 | DE3910559A1 Oil separator with labyrinth-type flow ducting |
| 09/25/1990 | US4958613 Internal combustion engine with crankcase ventilation system |
| 09/18/1990 | CA1274133A1 Crank case ventilation system |
| 09/04/1990 | US4953525 Cooling system for V type engine |
| 08/29/1990 | CN1044974A Engine breather assembly with oil drain back |
| 08/23/1990 | WO1990009520A1 Dual function air filter |
| 08/23/1990 | DE3914373C1 Supercharged four-stroke engine with crankcase venting passages - in which supercharged drive and equaliser for crankcase gas flow are mounted |
| 08/14/1990 | US4947812 For a V-type internal combustion engine |
| 08/14/1990 | US4947806 Engine breather oil recovery system |
| 08/07/1990 | US4945887 Crankcase vent system |
| 07/17/1990 | US4941900 Apparatus and method for gas-liquid separation and filtration |
| 07/05/1990 | DE3936088A1 Self-regulating electric heating device - has contact element acting on heating elements pressed against heating block |
| 05/29/1990 | US4929263 Air cleaner |
| 05/22/1990 | US4926814 Crankcase breather and lubrication oil system for an internal combustion engine |
| 05/08/1990 | US4922882 For an internal combustion engine |
| 05/08/1990 | US4922881 Breather device for an internal combustion engine |
| 05/01/1990 | US4920943 Cover for the valve rocker compartment of internal combustion engines, with a lubricating oil anti-sucking device |
| 05/01/1990 | US4920930 System for blow-by gas return to the combustion chamber of an engine |
| 04/18/1990 | CN1007638B Crank channel type respiration structure |
| 04/09/1990 | EP0341282A4 Cyclone separator. |
| 03/27/1990 | US4911120 Lubrication system for engines |
| 03/06/1990 | US4905657 Emission control valve with gas flow shut-off |
| 03/06/1990 | US4905656 Emission control valve with internal spring |
| 02/27/1990 | US4903644 Air intake section of an internal combustion engine |
| 02/20/1990 | US4901703 Crankcase ventilation system for a reciprocating internal combustion engine |
| 02/08/1990 | WO1990001130A1 Device for equalizing pressure between machine housing and the surroundings |
| 02/07/1990 | EP0353903A1 Method for gas-liquid separation and filtration |
| 01/25/1990 | DE3923530A1 Pressure compensator between machine housing and ambient atmos. - includes liq.-tight, but gas permeable membrane supported on less resilient grid |
| 01/24/1990 | EP0351521A2 Crankcase ventilation |
| 01/24/1990 | EP0351520A2 Air inlet conduit for a combustion engine |
| 01/11/1990 | DE3822789A1 Automatic throttle valve for limiting volume flow |
| 01/03/1990 | EP0348743A2 Crank case air extractor for an internal-combustion engine |
| 12/12/1989 | US4886033 Stabilized flow control valve |
| 12/12/1989 | US4886019 Engine breather assembly with oil drain back |
| 12/06/1989 | EP0344240A1 Engine with crankcase fumes disposal system |
| 11/21/1989 | US4881510 Breather device of an engine |
| 11/15/1989 | EP0341770A2 An internal combustion engine valve rocker compartment cover, with a lubricating oil anti-sucking device |
| 11/15/1989 | EP0341282A1 Cyclone separator |