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| Number | Title | Issue Date |
| 7523729 | Rocker assembly with adjustable swivel foot A rocker assembly for a valve train having a first valve, a second valve, and a pushrod is provided. The rocker assembly includes a rocker having a first arm in contact with the first valve, a second arm in contact with the second valve, and a third arm in contact w... | 04/28/2009 |
| 7418936 | Engine and valvetrain with compact rocker arm and fulcrum assembly for internal combustion engines An internal combustion engine having a plurality of intake and/or exhaust valves associated with each cylinder includes a valvetrain having a fulcrum with a plurality of pivot ball sockets each associated with a rocker arm and pivot ball disposed between the fulcrum... | 09/02/2008 |
| 7370618 | Internal combustion engine with five valves per cylinder Otto cycle internal combustion engine, comprising a cylinder block including at least one cylinder having a longitudinal axis, a piston movable within said cylinder and having a recess open on a head surface of the piston, a head fastened to said cylinder block and ... | 05/13/2008 |
| 7357108 | Valve-operating mechanism A valve operating system for an engine that includes a piston that reciprocates along a piston axis. The valve operating system includes a valve member that is movable along a valve axis between a first position and a second position and a crankshaft that is rotatab... | 04/15/2008 |
| 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 |
| 7258093 | Concave combustion chamber An internal combustion engine is provided with a roughly concave cylinder head, wherein a ridge descends into the combustion chamber. A first wall is formed from the ridge to a cylinder periphery to form a seat for an air intake valve. A second wall is formed from t... | 08/21/2007 |
| 7228833 | Rocker system for an internal combustion engine An improved rocker system for actuating valve lift events of an internal combustion engine is provided. The system includes a rocker arm and an actuator link with the actuator link arranged to be in constant driving engagement with the rocker arm and a camshaft. A r... | 06/12/2007 |
| 7213553 | Internal EGR for an internal combustion engine An exhaust gas recirculation (EGR) system for use in a four-stroke, internal combustion, compression-ignition engine having at least one engine cylinder, at east one combustion chamber, at least one intake valve and a crankshaft. The EGR system includes at least one... | 05/08/2007 |
| 7182054 | Valve drive including a rocker lever with hydraulically actuated driver In a valve drive for a piston internal combustion engine with a first rocker lever which is in operative contact with at least a first cylinder valve, wherein a cam structure including a first cam and at least one additional cam is in active contact with a second ro... | 02/27/2007 |
| 7146948 | Valve lifting arrangement A valve actuating assembly for opening and closing a valve includes a cam mounted on a camshaft and enclosed by a pair of rotary cam guides each of which includes a roller channel having an outer race for receiving opposed ends of a roller that extends transversely ... | 12/12/2006 |
| 7146949 | Valve control apparatus A first camshaft (24) operates the exhaust valves (18) and a first intake valve (12) for each cylinder (8), and a second camshaft (38) operates the second intake valve per cylinder (14), the second camshaft further having a ... | 12/12/2006 |
| 7134411 | Valve operating mechanism A valve operating mechanism is described for an internal combustion engine in which at least one valve (14) of an engine cylinder is operated by two cams (10,12). The cams (10,12) have respective cam followers (38,36) which are resilientl... | 11/14/2006 |
| 7111600 | Variable valve-stroke controls Mechanical controls for continuously varying the length of the stroke of the valves in an internal-combustion engine and for maintaining the valves constantly closed while the engine is in operation while simultaneously varying how long the valve or valves remain op... | 09/26/2006 |
| 7093574 | Rocker arm shaft for an automobile engine Disclosed is a rocker arm shaft for an automobile engine, which is effectively capable of offsetting the length change of the rocker arm shaft, which caused by heat. According to an embodiment of the present invention, a rocker arm shaft can be divided into at least... | 08/22/2006 |
| 7028653 | Roller rocker mounting mechanism A roller rocker mounting mechanism for an internal combustion engine valve actuating mechanism includes a first rocker stand having a first locating boss and a second rocker stand having a second locating boss. An indexing link has a first portion separably attachab... | 04/18/2006 |
| 7021260 | Rocker arm A rocker arm 1 includes an arm body 4 prepared from a single plate material by means of a press work. The arm body 4 includes a pair of parallel side walls 5 and a connecting wall 6 bridging between the opposite side walls 5... | 04/04/2006 |
| 6948465 | Variable valve mechanism for engine A variable valve mechanism has a switching mechanism for transmitting cam displacement to a first rocker arm from a second rocker arm. A camshaft is disposed obliquely above a rocker shaft. A first abutting portion and a second abutting portion are disposed in a dea... | 09/27/2005 |
| 6938596 | Variable valve-stroke controls Mechanical controls for continuously varying the length of the stroke of the valves in an internal-combustion engine and for maintaining the valves constantly closed while the engine is in operation while simultaneously varying how long the valve or valves remain op... | 09/06/2005 |
| 6895925 | Internal combustion engine having three valves per cylinder A valve train is disclosed for an internal combustion engine having a block, a camshaft in the block, and at least two push rods actuated by the camshaft. The valve train comprises first and second rockers, and three valves. The first rocker is actuated by one of th... | 05/24/2005 |
| 6892696 | Internal combustion engine To provide an internal combustion engine that can generate a strong swirl by increasing the amount of intake air for generating the swirl in a simple structure. In the internal combustion engine provided with a cylinder head formed with an air intake port having fir... | 05/17/2005 |
| 6883485 | OHV and gear mechanism for engine In an OHV engine in which a pair of cylinder blocks is connected to the crankcase and power from a cam is transmitted to a rocker arm pivotably supported by the cylinder heads via connecting rods, to enable downsizing of the engine while reducing the number of compo... | 04/26/2005 |
| 6830022 | Valve actuation linkage mechanism There is provided a valve actuation linkage mechanism for use in an internal combustion engine that reduces friction wear on the valve assembly during engine operation and can be pre-assembled to reduce manufacturing time and costs. The valve actuation linkage mecha... | 12/14/2004 |
| 6769387 | Compact two-step rocker arm assembly A rocker arm assembly includes an inner rocker arm and an outer rocker arm. The outer rocker arm includes two rail portions spaced a distance apart and forming an open space therebetween. The inner rocker arm is pivotably connected to the outer rocker arm such that ... | 08/03/2004 |
| 6763793 | Valve system for internal combustion engine A valve system has a piston mounted in a cylinder in one of first and second rocker arms and is adapted to be forced by a return spring, and an engagement projection formed in the other one of the first and second rocker arms and is adapted to abut the piston to cau... | 07/20/2004 |
| 6659056 | Valve train with a single camshaft A valvetrain with a single camshaft is disclosed. The valvetrain has one or more intake valves, and one or more exhaust valves per cylinder of an engine block. The valvetrain comprises a cylinder head. The valve head of each intake valve is removably seat... | 12/09/2003 |
| 6634330 | Valve system for engine To provide a valve system for an engine, in which a rocker arm is interlocked with an engine valve and is supported on a rocker shaft fixedly mounted to a cylinder head such that it is rockable with the rotation of a camshaft. Accordingly, the size and we... | 10/21/2003 |
| 6481397 | Variable valve drive system for an internal combustion engine A Variable valve lift mechanism that minimizes the number of components and also which permits a greater latitude of valve lift adjustment including the possibility of no valve lift under some running conditions. This is done without interference with oth... | 11/19/2002 |
| 6474282 | Flat rocker arm having a clevis The present invention is directed to a rocker arm having a pivoting clevis mounted to a second end of the rocker arm that engages a valve stem or a bridge that activates dual valves. The clevis has a substantially flat contacting surface and an internal r... | 11/05/2002 |
| 6474296 | Lash adjustment for use with an actuator An actuator for adjusting a clearance between an end of a valve and an end of the actuator. The actuator has a piston therein having a central bore of which a portion is threaded. The piston has an end and has a flat defined near the end. The actuator has... | 11/05/2002 |
| 6467443 | Valve operating device of internal combustion engine A low speed cam is disposed on a cam shaft. A low speed sub-rocker arm actuated by the low speed cam is pivotally connected to a main rocker arm. A connecting member is supported by the main rocker arm. The connecting member has both a first condition whe... | 10/22/2002 |
| 6463899 | Valve operating system in internal combustion engine In a valve operating system in an internal combustion engine, a swinging support section provided at a base end of a rocker arm is swingably carried on a rocker shaft mounted in a cylinder head. A plurality of valve abutments are provided at a tip end of ... | 10/15/2002 |
| 6453861 | Valve gear of internal combustion engine In an internal combustion engine, a pair of suction ports are formed on left and right sides of the rear of the cylinder head with respect to the vehicle body. A pair of exhaust ports is formed on left and right sides on the front side of the cylinder hea... | 09/24/2002 |
| 6431135 | Valve operating system in internal combustion engine In a valve operating system in an internal combustion engine, a swinging support section provided at a base end of a rocker arm is swingably carried on a rocker shaft, and tappet screws are threadedly fitted in a plurality of boss portions formed at a tip... | 08/13/2002 |
| 6418898 | Valve operating system in internal combustion engine In a valve operating system in an internal combustion engine, a rocker arm has a plurality of valve abutments provided thereon and capable of being individually put into abutment against upper ends of a plurality of engine valves cam abutments, and also h... | 07/16/2002 |
| 6390046 | Valve train with a single camshaft A valvetrain with a single camshaft is disclosed. The valvetrain has one or more intake valves, and one or more exhaust valves per cylinder of an engine block. The valvetrain comprises a cylinder head. The valve head of each intake valve is removably seat... | 05/21/2002 |
| 6293238 | Rocker arm and rocker arm assembly for engines A rocker arm assembly for an engine is disclosed. The rocker arm assembly comprises a rocker shaft having a first side and a second side and a rocker arm pivotably disposed on the rocker shaft. The rocker arm comprises a first portion disposed on the firs... | 09/25/2001 |
| 6257187 | Pivot shaft for an internal combustion engine An internal combustion engine includes a housing with a plurality of combustion cylinders. At least one of the combustion cylinders has a longitudinal axis which is disposed at an acute angle relative to a longitudinal axis of at least one other combustio... | 07/10/2001 |
| 6237553 | Arrangement for driving valves A valve drive arrangement for use in an engine having a pair of intake valves and a pair of exhaust valves for each cylinder. Each pair of intake valves are coupled to each other by a valve bridge and forced downwards simultaneously by a single rocker arm... | 05/29/2001 |
| 6237552 | Motorcycle rocker arm A rocker arm (10) that reduces frictional forces between a cam (86) and the rocker arm (10) is disclosed. The rocker arm (10) includes a pair of spaced side members (20) having a valve portion (14), a middle portion (16), and a pivot portion (12). The sid... | 05/29/2001 |
| 6205966 | Multicylinder internal combustion engine with two inlet valves and two outlet valves The invention relates to a multicylinder internal combustion engine with two inlet valves and two outlet valves (12, 11), the outlet valves (11) being located on one side of an internal combustion engine and the inlet valves (12) being located on the othe... | 03/27/2001 |
