| Patents for F01L 3 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof (4,573) |
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| 11/18/1997 | US5687685 Valve seat and method |
| 11/13/1997 | WO1997042402A1 Spark plug function incorporated engine valve and valve mechanism |
| 11/12/1997 | EP0806551A2 Manufacturing process for nitrided bimetallic valve |
| 11/06/1997 | WO1997041346A1 Device and method in combustion engines |
| 11/04/1997 | US5683521 Reducing thickness of oxide film by electropolishing; low temperature annealing |
| 10/30/1997 | WO1997040263A1 Push-pull valve assembly for an engine cylinder |
| 10/30/1997 | WO1997040262A1 Method and apparatus for holding a cylinder valve closed during combustion |
| 10/29/1997 | CN1163341A Intake valve device for preventing adhesion of deposits |
| 10/28/1997 | CA2130521C Vented valve mechanism for internal combustion engines |
| 10/22/1997 | EP0802307A1 Intake valve device for preventing adhesion of deposits |
| 10/22/1997 | EP0802306A1 Valve system for engine |
| 10/21/1997 | US5679909 Composite oxide of calcium, magnesium and silicon oxides are dispersed in iron-dominant metal matrix; high strength; can be cut with less tool wear |
| 10/15/1997 | EP0801214A1 Poppet valve and method of manufacturing it |
| 10/15/1997 | EP0801212A1 Engine variable valve timing mechanism |
| 10/15/1997 | EP0801140A1 Heat resisting alloys, exhaust valves and support for exhaust gas treating catalysts |
| 10/15/1997 | CN1162059A Poppet valve and method for manufacturing it |
| 10/14/1997 | US5676907 Method for making near net shape ceramic-metal composites |
| 10/09/1997 | WO1997037107A1 Process for producing cylinder heads for internal combustion engines |
| 10/07/1997 | US5673656 Cylinder head for a four stroke combustion engine |
| 10/02/1997 | DE19612500A1 Verfahren zur Herstellung von Zylinderköpfen für Verbrennungsmotoren A process for producing cylinder heads for internal combustion engines |
| 09/24/1997 | CN1160435A Dual Piston IC engine |
| 09/18/1997 | WO1997034077A1 Carbon fiber reinforced carbon composite valve for an internal combustion engine |
| 09/18/1997 | WO1997033829A1 Method of manufacturing carbon composite engine valves |
| 09/18/1997 | CA2248230A1 Carbon fiber reinforced carbon composite valve for an internal combustion engine |
| 09/18/1997 | CA2248149A1 Method of manufacturing carbon composite engine valves |
| 09/17/1997 | CN1159506A Improved two-piece valve stem seal |
| 09/10/1997 | EP0794030A1 Method for joining metals and valve seat provided in a cylinder head |
| 09/10/1997 | EP0793733A1 A cylinder member and nickel-based facing alloys |
| 09/09/1997 | US5666632 Valve seat insert of two layers of same compact density |
| 09/09/1997 | US5664531 Device for adjusting valve duration using external air supply |
| 09/09/1997 | US5664527 Pneumatic valve recoil system for internal combustion engines |
| 09/04/1997 | DE19607591A1 Lift valve control gear |
| 09/02/1997 | US5662745 Integral engine valves made from titanium alloy bars of specified microstructure |
| 09/02/1997 | US5662078 Intake valve device for preventing adhesion of deposits |
| 08/27/1997 | EP0791728A1 Valve in an exhaust path |
| 08/26/1997 | US5659937 Rolling tool for forming a valve seat retainer |
| 08/21/1997 | WO1997030303A1 Stem sealing system for broad temperature ranges |
| 08/19/1997 | US5658366 Heat- and abrasion-resistant aluminum alloy and retainer and valve lifter formed therefrom |
| 08/13/1997 | EP0789088A1 Wear-resistant sintered alloy, and its production method |
| 08/12/1997 | US5656219 Milling, mixing with sintering aid, shaping, multistage sintering and pressurizing in nitrogen atmosphere |
| 08/12/1997 | US5655493 Exhaust valve for internal combustion engine |
| 08/06/1997 | EP0787252A1 A dual piston internal combustion engine |
| 07/31/1997 | DE19602720A1 Lift valve as gas inlet and exhaust valve of internal combustion engine |
| 07/24/1997 | DE19601981A1 Engine valve-spring end plate |
| 07/23/1997 | EP0785288A1 Wear-resistant sintered alloy, and its production method |
| 07/23/1997 | EP0785047A1 Method and device for the setting and removal of valve cotters |
| 07/22/1997 | US5649358 Into a cylinder head |
| 07/16/1997 | EP0700324B1 Valve seat insert |
| 07/16/1997 | CN1154292A Method for mfg. high temp. abrasion-resistant seal valve gasket |
| 07/15/1997 | US5647307 Valving for dual compression/expansion engine and method of assembling the same |
| 07/03/1997 | DE19548290A1 Device for turning valve of internal combustion engine |
| 06/10/1997 | US5636658 High flow reed valve |
| 06/10/1997 | US5636603 Apparatus for detecting valve lifting characteristic of cam shaft assembly for use in internal combustion engine |
| 06/10/1997 | US5636602 Push-pull valve assembly for an engine cylinder |
| 06/03/1997 | US5634444 Intake port structure in an internal combustion engine |
| 05/28/1997 | EP0775256A1 Six-stroke internal combustion engine with variable combustion chamber |
| 05/28/1997 | EP0775253A1 Titanium engine valve |
| 05/27/1997 | US5632240 Cylinder head cast from aluminum alloy having annularly shaped wear resistant portions of harder copper alloy at ends of valve guide bore |
| 05/21/1997 | EP0774568A1 Sealing arrangement |
| 05/15/1997 | CA2176662A1 Two-piece valve stem seal |
| 05/14/1997 | EP0773351A1 Method for producing a cylinder head unit having valve seats and a valve seat member |
| 05/14/1997 | EP0773350A1 Method for producing a cylinder head unit of an internal combustion engine |
| 05/07/1997 | EP0771941A1 Internal combustion engine cylinder head |
| 05/07/1997 | EP0771938A1 Cylinder head for internal combustion engine |
| 05/06/1997 | US5626914 Ceramic body with copper metal infiltration |
| 05/02/1997 | EP0770765A1 Poppet valve and method of manufacturing the same |
| 04/30/1997 | DE19601853C1 Method for inserting and removing valve spring retainers |
| 04/29/1997 | US5625154 Method and apparatus for testing ceramic specimens by simultaneous application of mechanical and thermal stresses |
| 04/15/1997 | US5619961 Poppet valve retainer system for internal combustion engine |
| 04/15/1997 | US5619796 Method of making an ultra light engine valve |
| 04/08/1997 | US5618048 Piston ring seal having angled ends |
| 04/08/1997 | US5617835 Inlet valve for a combustion space of an internal combustion engine |
| 04/03/1997 | WO1997012132A1 Low profile internal combustion engine |
| 04/01/1997 | US5616192 Coil retainer for engine valve and preparation of the same |
| 04/01/1997 | US5615646 Method and apparatus for holding a cylinder valve closed during combustion |
| 03/26/1997 | EP0764770A2 Internal combustion piston engine with at least one cylinder |
| 03/25/1997 | US5614043 Method for fabricating electronic components incorporating ceramic-metal composites |
| 03/20/1997 | WO1997010417A1 Internal combustion engine with crankcase pressure barrier |
| 03/20/1997 | CA2231595A1 Internal combustion engine with crankcase pressure barrier |
| 03/19/1997 | CN1145447A 内燃机气门 Engine Valve |
| 03/18/1997 | US5611306 Internal combustion engine valve |
| 03/18/1997 | US5611250 Rolling/sliding part |
| 03/13/1997 | WO1997009517A1 Hydraulic valve assembly |
| 03/13/1997 | WO1997009516A1 Pneumatic engine valve assembly |
| 03/12/1997 | EP0761932A1 Sliding part and method of manufacturing the same |
| 03/06/1997 | DE19531620A1 Four cycle internal combustion engine |
| 03/05/1997 | EP0760054A1 Air valve combined with a valve chamber |
| 02/26/1997 | EP0759500A1 Internal combustion engine valve |
| 02/11/1997 | US5601476 Method for precision-grinding a bezel at the inlet bore a workpiece |
| 01/28/1997 | US5596965 Cylinder head for an internal combustion engine |
| 01/28/1997 | US5596964 Intake and exhaust valves and intake port of internal combustion engine |
| 01/23/1997 | WO1997002417A1 Arrangement in a cylinder head |
| 01/22/1997 | CN1033870C Exhaust valve for diesel internal combustion engine and method for manufacture of valve |
| 01/15/1997 | EP0753101A1 Engine components including ceramic-metal composites |
| 01/14/1997 | US5592913 Exhaust valve with a tapered stem portion |
| 01/08/1997 | EP0752015A1 A method of making a sintered article |
| 01/03/1997 | WO1997000375A1 Valve spring arrangement |
| 01/02/1997 | EP0751284A1 Cylinder head unit and method for producing a valve seat |
| 01/02/1997 | EP0750955A1 Method of molding a poppet valve having a smaller diameter portion |
| 12/27/1996 | EP0750097A1 A seal for a valve of an internal combustion engine |