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| Number | Title | Issue Date |
| 7603976 | Gas exchange valve of an internal combustion engine With a gas exchange valve of an internal combustion engine having a hollow valve shaft (1) and valve disk (7), wherein the valve disk (7) has a valve tray (5) and a valve cone (6) connected to the outer edge thereof, whereby the va... | 10/20/2009 |
| 7562647 | Inlet valve having high temperature coating and internal combustion engines incorporating same An inlet valve is partially coated with a protective coating to resist corrosion and gas impingement when used in an internal combustion engine. The inlet valve has a hard cladding that is shaped to function as a valve seat. The hard cladding forms an interface with... | 07/21/2009 |
| 7556011 | Valve structure for internal combustion A sealing region where a valve seat and an outer peripheral surface of a enlarged diameter portion of a flare portion are contacted to each other is configured so that an end on a side opposite a combustion chamber is positioned at a position same as or on a side aw... | 07/07/2009 |
| 7401586 | Valve seat rings made of basic Co or Co/Mo alloys, and production thereof A cylinder head for internal combustion engines, comprising a metallic valve seat ring that is formed by a thermally sprayed homogeneous layer made of a basic Co or Co/Mo alloy. The sum of the Co content and Mo content in the alloy exceeds 50 percent by weight while... | 07/22/2008 |
| 7371265 | Continuous hydrogen and alcohol generator from coal A gas generator with the sole input of air, water and coal that continuously produces hydrogen and carbon monoxide and further reacts these two gases into alcohol. This gas generator/reactor is using its own by-products and is therefore also self sustaining. ... | 05/13/2008 |
| 7363901 | Engine valve, method of manufacturing same, and cylinder head incorporating same An engine valve, formed of a titanium alloy, enables improvement of reliability and productivity while improving creep resistance and fatigue strength at a high temperature. The engine valve, including a stem section and a bevel section provided at one end of the st... | 04/29/2008 |
| 7360517 | Valve actuator for actuating a gas exchange valve of an internal combustion engine A valve actuator for operating a gas exchange valve of an internal combustion engine has a sleeve-shaped positioning piston which is connected to a valve stem, has at least two shell-shaped wedge pieces enclosing a stem end of the valve stem, whose radially outer pe... | 04/22/2008 |
| 7273508 | Iron-based sintered alloy material for valve seat An iron-based sintered alloy material for a valve seat having improved wear resistance and reduced opposite aggressibility to a mating valve. The iron-based sintered alloy material contains 10% to 20% by area of first hard particles and 15% to 35% by area of second ... | 09/25/2007 |
| 7273026 | Roller follower body The present invention relates to a roller follower, comprising an outer surface, enclosing a first cavity, a second cavity, and a transition opening, wherein the first cavity includes a first inner surface configured to house a cylindrical insert the second cavity i... | 09/25/2007 |
| 7240895 | Gas exchange valve for an internal combustion engine The invention relates to a gas exchange valve for an internal combustion engine, in each case comprising in particular a hollow valve stem (3) and valve head, in which the valve head comprises a valve bottom and a hollow valve keeper, connected to the externa... | 07/10/2007 |
| 7235116 | High temperature corrosion and oxidation resistant valve guide for engine application A powder metal component particularly suited for use as a valve guide in high temperature applications. The powder metal component according to a first embodiment has a chemical composition on a weight percent basis of about 0.1-2.0% C; about 8.0-18.0% Cr; about 1.0... | 06/26/2007 |
| 7225781 | Methods for surface treating engine valves and engine valves treated thereby The present invention teaches a method for surface treating an engine valve made from titanium or titanium alloy in order to form a hardened coating having a high level of adhesion to the surface of the engine valve, and also having improved abrasion and impact resi... | 06/05/2007 |
| 7222837 | Valve body with integral seal retention groove A valve body having at least one internal hollow or space comprises two separately formed portions joined by at least one cylindrical web. Internal space may communicate with space outside the valve body via a fluid passage, and internal space may be filled with a s... | 05/29/2007 |
| 7216427 | Surface treatment of prefinished valve seat inserts A prehardened valve seat insert and a process for forming a prehardened valve seat insert for insertion into a cylinder head or an engine block of an internal combustion engine. The process comprises the steps of (a) forming the valve seat insert; (b) precision mach... | 05/15/2007 |
| 7213586 | Exhaust gas recirculation valve Mechanical systems having anti-stick mediums applied thereto are provided. In one aspect, exhaust gas recirculation (EGR) valve systems having anti-stick mediums applied thereto are also provided. The anti-stick medium can be applied to any contacting surface, such ... | 05/08/2007 |
| 7198554 | Method of making valve guide having textured external surface A cylindrical valve guide having a roughened external surface texture from about 50 to about 100 microinches permits effective amounts of lubricating oil to become trapped or contained by such roughened external surface and thereby facilitates subsequent press fitti... | 04/03/2007 |
| 7182056 | Inverted poppet valve for internal combustion engine A poppet valve for use in an internal combustion engine. The poppet has a partially-inverted perimeter shape which nevertheless substantially maintains the curtain area of the valve. These improved valves pack more efficiently into the combustion chamber roof area t... | 02/27/2007 |
| 7175413 | Elastomeric dispensing valve manufacture A system for molding dispensing valves includes first and second mold sections, at least one of which is movable with respect to the other between a closed position in which the mold sections form a plurality of dispensing valve mold cavities, and an open position i... | 02/13/2007 |
| 7159005 | Methods, systems and computer program products for restartable multiplexed file transfers Methods, systems and computer program products are provided for concurrently transferring a plurality of files between a first data processing system and a second data processing system by multiplexing chunks of the plurality of files onto a connection between the f... | 01/02/2007 |
| 7143657 | Planarity-measuring roller for steel strip A planarity-measuring roller for metallic strip has a plurality of force sensors set in respective outwardly open recesses in a roller body with respective covers overlying the sensors in the recesses, generally flush with an outer surface of the body, and spaced by... | 12/05/2006 |
| 7143782 | Pressure regulator module for controlling a gas A pressure regulator module for controlling a gas is provided, which includes a chamber, at least one gas inlet, and at least one gas outlet. In addition, a proportional valve operating essentially according to the pressure-equalization principle is post-connected t... | 12/05/2006 |
| 7136789 | Method for producing a constraint-satisfied cam acceleration profile A method for generating an acceleration profile for a valve operating cam of an internal combustion engine varies an adjustment point of an initial draft acceleration profile curve such that a determinant of a set of equations defining valve motion constraints and s... | 11/14/2006 |
| 7134410 | Detachable connection for coupling a gas exchange valve of an internal combustion engine to an actuator Disclosed is a simple, easy-to-produce, and reliable connection between a shaft of a gas exchange valve and an actuator. This connection is detachable and, as a result, can be connected and disconnected multiple times. It is also possible to dispose the coupling pie... | 11/14/2006 |
| 7104238 | Apparatus and method for lessening the accumulation of high boiling fraction from fuel in intake valves of combustion engines An intake valve for a combustion engine having an intake port is disclosed. The intake includes a valve guide having an end proximate the intake port, a valve shield extending from the end of the valve guide and into the intake port, and a valve stem arranged proxim... | 09/12/2006 |
| 7040601 | Valve guide for internal combustion engine made from iron base sintered alloy Valve guides made of ferrous sintered alloy for internal combustion engines have improved durability of the valve stem without soft nitriding process. The valve guides include Cu: 8 to 20 mass %, C: 0.8 to 1.5 mass %, and at least one of MnS, WS2, and MoS... | 05/09/2006 |
| 7011067 | Chrome plated engine valve A valve (10) for use in an internal combustion engine comprises a base metal. The base metal is covered with a thin, dense chromium coating. ... | 03/14/2006 |
| 7001672 | Laser based metal deposition of implant structures A method of depositing a hard wear resistant surface onto a porous or non-porous base material of a medical implant. The medical implant device formed by a Laser Based Metal Deposition (LBMD) method. The porous material of the base promotes bone ingrowth allowing th... | 02/21/2006 |
| 6953018 | Valve arrangement for a combustion engine The invention is related to an arrangement that is designed to control inlet and outlet gas mixtures and is used mainly in four stroke combustion engines. Prior art designs are of a kind that limits the performance of the four-stroke engine mainly as a result of the... | 10/11/2005 |
| 6938602 | Multi-piece valve for reciprocating piston engines The invention relates to a multi-piece valve for reciprocating piston engines in which the valve stem is connected to the valve head in a manner resistant to both tension and compression. In the area of a center through-opening the valve head has an annular bearing ... | 09/06/2005 |
| 6938816 | Methods of manufacturing diffusion bonded products and products manufactured by such methods A method is provided for diffusion bonding a first member (20) and a second member (3) to each other. According to this method, a first joint portion (24) of the first member and a second joint portion (34) of the second member are fitted... | 09/06/2005 |
| 6935296 | Method of producing a gas shuttle valve of an internal combustion engine A gas shuttle valve is for an internal combustion engine, in which a valve plate, as a sealing element, a tubular valve shaft, as a guide element, and a thrust part, which seals the end of the valve shaft opposite to the valve cone, as a stop for a valve operating e... | 08/30/2005 |
| 6912984 | Composite lightweight engine poppet valve A composite lightweight engine poppet valve (10, 110, 210) that has a valve head portion (12, 112, 212) and at least a portion of the stem portion (14, 114, 214) made from a titanium intermetallic material attached by way of a solid state attach... | 07/05/2005 |
| 6868814 | Method for manufacturing a multi-part valve for internal combustion engines For making an interconnection between a valve head and stem, the interconnection between these parts is made by pouring a cast alloy around the stem end. A connection and a valve are also provided. ... | 03/22/2005 |
| 6752116 | Connection between two shaft ends, positioned coaxially one behind the other, of a gas shuttle valve in an internal combustion engine and a valve actuator A connection between two shaft ends situated coaxially one behind the other, of a gas exchange valve of an internal combustion engine and a piston rod of a valve actuator is provided, where at least one coupling member at least partially surrounds the shaft ends. Th... | 06/22/2004 |
| 6729287 | Connection between a shaft end of a gas exchange valve in an internal combustion engine and a sleeve-shaped control piston on a tappet A connection between a shaft end of a gas exchange valve of an internal combustion engine and a sleevelike actuating piston of a valve actuator, has at least two shell-like key pieces, surrounding the shaft end and on whose radially outer circumferential surface the... | 05/04/2004 |
| 6718932 | Lightweight engine poppet valve A lightweight engine poppet valve that has a valve head portion made from a lightweight, heat resistant material is attached to a hollow tube stem portion. The attachment is made with a mechanically locking interfitting joint on an extending portion of the valve hea... | 04/13/2004 |
| 6694961 | Internal combustion engine An internal combustion engine including a combustion chamber, an intake air passage communicated with the combustion chamber, an intake valve having a thermal insulator at an air-exposure portion thereof which is opposed to the intake air passage, a fuel ... | 02/24/2004 |
| 6679478 | Hollow poppet valve and method for manufacturing the same In order to propose a hollow poppet valve having an excellent, high strength to weight properties by constructing it in order that no influence from welding heat is exerted onto the face, and no stress is concentrated at the welded portion, and a method f... | 01/20/2004 |
| 6679219 | Intake and exhaust valves for internal combustion engines An intake and exhaust valve for an internal combustion engine is provided wherein the stem longitudinal axis is offset from the valve head center. Alternatively, the valve head may have an end having a planar surface wherein the axis and the surface are n... | 01/20/2004 |
| 6675757 | Intake valve for an internal combustion machine A valve having a sleeve-like screening element for protecting an internal combustion engine against deposits in a region extending up from a hollow throat to a stripping edge. The screening element has a separate contactor guide surface for the combustion... | 01/13/2004 |
