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| Number | Title | Issue Date |
| 7779807 | Intake/exhaust valve and its seal for internal combustion engine An intake/exhaust valve seal structure for an internal combustion engine is disclosed. A sealing surface is formed by a valve seat surface in a ceiling of a combustion chamber and a valve face surface provided on an intake/exhaust valve. The sealing surface lies on ... | 08/24/2010 |
| 7523733 | Dual intake valve assembly for internal combustion engine An intake valve assembly of an internal combustion engine that includes a combustion chamber and an intake passage. The intake valve assembly comprises a primary valve provided to seal against a primary valve seat formed in an intake port, a secondary valve mounted ... | 04/28/2009 |
| 7398748 | Poppet valve and engine using same One embodiment of the present invention provides a poppet valve offering an increased valve area, comprising an outer valve head having an outer valve port and an inner valve head having an inner valve port. The inner valve head is rotatable relative to the outer va... | 07/15/2008 |
| 7311068 | Poppet valve and engine using same One embodiment of the present invention provides a poppet valve offering an increased valve area, comprising an outer valve head having an outer valve port and an inner valve head having an inner valve port. The inner valve head is rotatable relative to the outer va... | 12/25/2007 |
| 7296545 | Coaxial poppet valve A two-piece intake assembly such as a coaxial poppet valve includes a main poppet valve with a stem attached to a head and an auxiliary poppet valve movable on the inner valve. A guiding element on the outer valve is configured to receive the inner valve stem, and i... | 11/20/2007 |
| 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 |
| 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 |
| 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 |
| 7044827 | Hand-held amusement devices and methods involving same A hand-held amusement device has a variety of features that encourage manipulative activities in and/or by a person's hand. These features may include various combinations of a base that is configured for rocking back and forth on a support surface; a cylinder that ... | 05/16/2006 |
| 6971344 | Internal combustion engine An internal combustion engine is provided in which an intake valve, which opens and closes an intake valve hole formed in a cylinder head facing a combustion chamber has a hollow structure. An exhaust valve hole formed in the intake valve is made to open and close b... | 12/06/2005 |
| 6830025 | Dual spring valve stem seal module A dual spring valve stem seal module utilizes an inner retention spring to incorporate a valve stem seal assembly, a valve spring and a spring retainer. The dual spring valve stem seal module reduces the inventory and simplifies the assembly required for the valve s... | 12/14/2004 |
| 6796281 | Internal combustion engine with valve train A valve train of an internal combustion engine has rocker arms which are spherically supported on lash adjusters and camshafts disposed above the rocker arms. The camshafts are rotatably supported on a cam holder including a lower cam holder which is fastened to a c... | 09/28/2004 |
| 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 |
| 6553956 | Composite lightweight valve for internal combustion engines In a composite lightweight valve for internal combustion engines having a solid valve head provided with a center opening and a valve stem received in the center opening of the valve head in a positively locking manner, the valve components are permanentl... | 04/29/2003 |
| 6539909 | Retractable seat valve and method for selective gas flow control in a combustion chamber The present invention provides an apparatus and method for selective control of gas flow in a combustion chamber in an internal combustion engine through a moveable or retractable seat valve that is independent of piston position. The retractable seat val... | 04/01/2003 |
| 6519847 | Surface treatment of prefinished valve seat inserts A method of manufacturing surface treated, prefinished valve seat inserts. The method entails forming the valve seat insert, precision machining the valve seat insert to precise tolerances so that the valve seat insert can be installed in one of the cylin... | 02/18/2003 |
| 6298817 | Exhaust valve for an internal combustion engine An exhaust valve for an internal combustion engine including a movable spindle with a valve disc which on its upper surface has an annular seat are of a material different from the base material of the valve disc. In the closed position of the valve the s... | 10/09/2001 |
| 6263849 | Ultra light engine valve and method of welding cap thereto A hollow poppet valve (31) is disclosed, in which a stem portion (13) includes a flared fillet portion (17), having a wall thickness (T), and a downwardly-extending cylindrical portion (33;51), having a cylindrical external surface (35). In the main embod... | 07/24/2001 |
| 6244234 | Exhaust valve for an internal combustion engine An exhaust valve for an internal combustion engine including a movable spindle with a valve disc of a nickel-based alloy which also constitutes an annular seat area at the upper surface of the valve disc. The seat area abuts a corresponding seat area on a... | 06/12/2001 |
| 6237549 | Vented valve mechanism for internal combustion engines A two piece intake valve for internal combustion engines comprising an inner and an outer valve which can be designed with orbicular heads. The inner valve including a stem of a smaller outer diameter than the outer valve. The outer valve including a holl... | 05/29/2001 |
| 6234142 | Shrouded engine valve A shrouded engine valve having a shroud wall so as to direct and swirl a mixture of fuel and air into a combustion chamber of an internal combustion engine. The arrangement of the invention improves the efficiency of combustion and thereby engine performa... | 05/22/2001 |
| 6138616 | Device and method in combustion engines Apparatus is disclosed for supplying air to an internal combustion engine including an inlet for supplying air to at least one cylinder in the engine, a tank for storing additional air under pressure, a feeder for supplying additional air from the tank, a... | 10/31/2000 |
| 5738054 | Engine valve having adjustable lift A valve system for an internal combustion engine includes a valve member having a head and a stem extending from the head, the head being capable of forming a seal with a valve seat of the internal combustion engine and the stem having at least one cylind... | 04/14/1998 |
| 5701930 | Modular valve assembly A pre-assembled valve mechanism for use in valve controlled internal combustion engines and the like which is constructed and arranged to be installed and removed quickly as a unitary module with minimum effort and expenditure of time; the module comprisi... | 12/30/1997 |
| 5615644 | Valve arrangement in an internal combustion engine A valve arrangement in an internal combustion engine, into which engine the air-fuel mixture is directly injected by relative pumping elements from a pressure chamber towards at least one cylinder provided with a valve aperture with its relative valve loc... | 04/01/1997 |
| 5357914 | Vented valve mechanism for internal combustion engines A two piece intake or exhaust valve for internal combustion engines comprising an inner and an outer valve which can be designed with orbicular heads. The inner valve including a stem of a smaller outside diameter than the outer valve. The outer valve inc... | 10/25/1994 |
| 5168843 | Poppet valve for an internal combustion engine Disclosed is a poppet valve for an internal combustion engine. The poppet valve includes an internal port which provides a second flow path for fuel-air mixture entering the combustion chamber. The valve body includes two annular seals which cooperate wit... | 12/08/1992 |
| 5094200 | Lightweight composite engine valve A composite intake or exhaust valve for an internal combustion engine is disclosed. The composite engine valve comprises a valve head of lightweight, heat resistant metal alloy material and a valve stem of lightweight, heat resistant ceramic based materia... | 03/10/1992 |
| 5081965 | Intake valve for internal combustion engine A valve for an internal combustion engine has a stem and head with differing diameters for the stem and the upper portion of the head. A radially irregular blend region placed between the stem and upper head is aligned to have a slight runout, that is, th... | 01/21/1992 |
| 4999911 | Method of manufacturing an automobile valve for use in rebuilding engines A method and apparatus for remanufacturing a valve seat includes providing a valve having an oversize valve head (52) and an oversize valve stem (80). The oversize valve head has a seating surface (60) which rides higher in the valve seat (34) after resur... | 03/19/1991 |
| 4872430 | Valve system for reciprocating engines This invention relates to a valve system for reciprocating engines, said system comprising at least two cylindrical guides obtained in the cylinder head; a valve for each guide, said valve being slidable inside the guide itself, without never projecting i... | 10/10/1989 |
| 4834036 | Composite valve for reciprocating engines and method for manufacturing the same A composite follow valve for internal combustion engines such as an intake and an exhaust valve and the method for producing the same are disclosed. The valve is produced by integrating into the whole a valve head portion molded from a lightweight, heat-r... | 05/30/1989 |
| 4790272 | Non-circular poppet valves for internal combustion engine cylinder assemblies A new internal combustion engine cylinder and valve assembly includes one or more valve openings and valves having a non-circular periphery. The non-circular valve openings and valves increase the flow-through area across the engine intake and exhaust val... | 12/13/1988 |
| 4779584 | Internal combustion engine intake valve An improved intake valve for an internal combustion engine is provided. The improved valve has a ridge extending from the downstream side of the periphery of the valve head to aid in the improved aerodynamic flow of the fuel mixture gas through the valve ... | 10/25/1988 |
| 4547229 | Solution heat treating of engine poppet valves A new solution heat treated engine poppet valve has been developed which has a microstructure characterized by a large grain size in the head for optimum high temperature creep and fatigue properties and a finer grain size in the stem for good low tempera... | 10/15/1985 |
| 4493296 | Three cycle engine with varying combustion chamber volume A piston type internal combustion engine of novel three cycle variety, in which the intake and compression functions are divorced from the combustion cylinder entirely and are carried out by a separate high pressure compressor; with a high pressure chargi... | 01/15/1985 |
| 4475494 | Valve for an internal combustion engine A valve for an internal combustion engine having mutually cooperating sealing surfaces, both of which are cylindrical. At least the movable valve member, carrying one of the sealing surfaces, is made of ceramic material. The movable valve member may be di... | 10/09/1984 |
| 4459949 | Liquid metal cooled internal combustion engine valves with getter A getter selected from the group consisting of zirconium, hafnium, yttrium, and mixtures thereof is used as an additive for metal coolants, e.g., sodium, potassium and sodium-potassium alloys, in metal cooled internal combustion engine valves.... | 07/17/1984 |
| 4450798 | Engine intake valve with heat pipe An internal combustion engine intake valve with an internal heat pipe. The valve stem and valve head are hollow and have a wicking material fixed to the internal hollow surface. A coolant material is contained within the hollow valve. A heat exchanger is ... | 05/29/1984 |
| 4406046 | Process for the production of a sodium-filled valve A process for the production of a sodium-filled valve in which the sodium is introduced into a hollow valve stem through a filling bore of relatively large diameter and which is sealed through a plug and/or usual welding. Subsequent to the closing off of ... | 09/27/1983 |
