| Patent application number | Description | Published |
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| 20080196683 | HIGH PERFORMANCE OVERHEAD VALVETRAIN ASSEMBLY - A high performance overhead valvetrain assembly includes a hydraulic lash adjuster which is received within and supports a trunnion. The trunnion, in turn, is received within a cylindrical passageway in one end of a rocker arm. The opposite end of the rocker arm engages a valve stem. Between the trunnion and the valve stem is a roller adapted the engage a cam of a camshaft. The trunnion stabilized rocker arm permits significantly increased valve lift and improved engine performance. | 08-21-2008 |
| 20090107449 | WINDAGE TRAY - A windage tray apparatus is provided and is configured to be mountable within a crankcase at least partially defined by an engine block of an internal combustion engine. The crankcase has a first bay and a non-adjacent second bay. The internal combustion engine has a crankshaft rotatably supported within the crankcase. The windage tray includes a tray member and a passage at least partially defined by said tray member and in communication with the first bay and the non-adjacent second bay. The passage is operable to allow gas transfer between the first bay and the non-adjacent second bay to reduce the motoring friction of the internal combustion engine. An internal combustion engine incorporating the disclosed windage tray apparatus is also provided. | 04-30-2009 |
| 20090159028 | HYDRAULICALLY LASHED END PIVOT ROCKER ARM - A hydraulically lashed end pivot rocker arm assembly finds application in high performance valve trains of internal combustion engines. The rocker arm is mounted at one end upon an eccentric bearing assembly and includes a surface for engaging a valve stem at the opposite end and a roller engaged by a camshaft disposed between the ends. The eccentric bearing assembly includes a stub shaft or cylindrical body that is received within a bore in the rocker arm and an eccentric bore which receives an inner shaft which extends along the cylinder head and supports the eccentric bearings and the rocker arm assemblies. The stub shaft or cylindrical body includes an ear or lug which is engaged by a hydraulic lash adjuster disposed parallel to and offset from the vertical plane of motion of the rocker arm. | 06-25-2009 |
| 20100224155 | CAMSHAFT DAMPING MECHANISM AND METHOD OF ASSEMBLY - A camshaft damping mechanism may include first and second housing members and a biasing member. The first housing member may be engaged with a camshaft. The second housing member may be slidably coupled to the first housing member and may abut an engine structure. The biasing member may be retained axially between the first and second housing members and may force the first housing member in an outward axial direction from the second housing member. | 09-09-2010 |
| 20100269773 | VALVETRAIN FOR OVERHEAD VALVE ENGINE - An engine assembly may include an engine structure, a camshaft rotationally supported within the engine structure and including a lobe, a first rocker arm, a valve lift mechanism, a valve, and a second rocker arm. The first rocker arm may include a first end rotationally coupled relative to the engine structure and a second end defining a cam engagement surface engaged with the lobe and a convex lift surface opposite the cam engagement surface. The valve lift mechanism may have a first end engaged with the lift surface of the first rocker arm. The second rocker arm may be supported relative to the engine structure and engaged with a second end of the valve lift mechanism and the valve to selectively open the valve based on displacement of the lift mechanism by the first rocker arm. | 10-28-2010 |
| 20110067654 | MULTIPIECE CAMSHAFT ASSEMBLY - A camshaft assembly may include a monolithic camshaft body, a journal member and a thrust ring. The monolithic camshaft body may define lobes and journal regions along an axial extent thereof. The journal member may be separate from and fixed to an axial end of the camshaft body adjacent an end lobe of the camshaft body. The thrust ring may be axially secured to the camshaft assembly at the axial end of the camshaft body. | 03-24-2011 |
| 20110083639 | CYLINDER DEACTIVATION TO REDUCE FUEL ENRICHMENT AFTER FUEL CUTOFF MODES - A system includes a fuel cutoff module and a cylinder deactivation module. The fuel cutoff module generates a fuel cutoff signal when a deceleration fuel cutoff condition occurs, wherein fueling to M cylinders of an engine is disabled based on the fuel cutoff signal, and wherein M is an integer greater than or equal to one. The cylinder deactivation module deactivates the M cylinders in response to the fuel cutoff signal. | 04-14-2011 |
| 20110174257 | Intake Manifold - An intake assembly for a 3-cylinder, V-configured engine comprises an intake manifold configured to conduct combustion air to a first, two-cylinder, cylinder head housing assembly and a second, single-cylinder, cylinder head housing assembly. A centrally extending plenum defines a plenum axis. A first plurality of intake runners, in fluid communication with the plenum, extend from a front side and transition through a circumferential arc around an upper side to deliver combustion air to, the first, two-cylinder, cylinder head housing assembly. A single intake runner, in fluid communication with the centrally extending plenum, extends from a rear side and transitions through a circumferential arc around the upper side to deliver combustion air to, the second, single-cylinder, cylinder head housing assembly. A zip tube delivers combustion air to the central plenum at a location that is between one of the first plurality of intake runners and the single cylinder intake runner. | 07-21-2011 |
| 20110174260 | Internal Combustion Engine - A modular engine family comprises an engine block assembly having an upper end extending at an angle α from a rear of the engine block assembly to a front thereof. An engine block closes the upper end and defines a crankcase comprising a crankshaft having three journals supported by journal bearings for rotation therein. First and second piston pins and associated first and second piston/rod assemblies are disposed in piston cylinders of a first cylinder housing assembly wherein the first and second piston pins are located in the same radial position on the crankshaft and are spaced longitudinally to define a firing interval of 360 degrees. A cylinder head is configured to close open ends of the piston cylinders to thereby define combustion chambers with the first and second pistons; the cylinder housing assembly reclined from vertical towards the rear of the engine block by an angle β. | 07-21-2011 |
| 20110174566 | Internal Combustion Engine and Vehicle Packaging for Same - A motor vehicle has an internal combustion engine mounted in a central tunnel of the vehicle floor pan. The internal combustion engine comprises an engine block assembly having a lower end closed by an oil pan and an upper end extending at an angle α from a rear of the engine block assembly to a front thereof. An engine block closes the upper end and defines a crankcase that is configured to house a crankshaft for rotation therein. A cylinder housing assembly is reclined from vertical, towards the rear of the engine block, about an axis of the crankshaft by an angle β. At least a portion of the cylinder housing assembly and the crankcase are disposed in the central tunnel of the vehicle floor pan. | 07-21-2011 |
| 20110220049 | ENGINE HAVING CAMSHAFT LUBRICATION RAIL - An engine assembly may include a cylinder head defining a first bearing surface supporting a camshaft, a bearing cap fixed to the cylinder head and a lubrication rail. The first bearing surface may have a first oil inlet extending therethrough. The camshaft may define an axial bore, a first radial passage and a second radial passage. The first radial passage may extend from the axial bore through an outer circumference of the camshaft and may be in communication with the first oil inlet. The second radial passage may extend from the axial bore through an outer circumference of the camshaft. The bearing cap may be fixed to the cylinder head and include a first oil outlet in communication with the second radial passage. The lubrication rail may include a second oil inlet in communication with the first oil outlet and a first lubrication supply passage aligned with a camshaft lobe. | 09-15-2011 |
| 20110220055 | MODULAR ENGINE ASSEMBLY AND FLUID CONTROL ASSEMBLY FOR HYDRAULICALLY-ACTUATED MECHANISM - An engine assembly may include a cylinder head and a fluid control assembly. The cylinder head may include first and second walls opposite one another and extending from a base region defining a cavity. The cylinder head may define a first oil passage extending through an interior surface defining the cavity. The fluid control assembly may include a first oil control valve and a first conduit. The first oil control valve may be fixed to the base region and may define a first port in fluid communication with the first oil passage and a second port in fluid communication with a second oil passage in the cylinder head. The first conduit may extend from the first oil control valve toward the first wall and may provide the fluid communication between the first port of the oil control valve and the first oil passage in the cylinder head. | 09-15-2011 |
| 20120006287 | ENGINE ASSEMBLY WITH INTEGRATED EXHAUST MANIFOLD - An engine assembly may include an engine structure, exhaust valves supported by the engine structure and a camshaft supported by the engine structure and engaged with the exhaust valves. The engine structure may define first, second, third and fourth combustion chambers arranged in series and a plurality of exhaust ports, each in communication with a corresponding combustion chamber. The engine structure may also define a flange region defining a first exhaust gas outlet axially aligned with the second combustion chamber and a second exhaust gas outlet axially aligned with the third combustion chamber. The engine structure may define first and second exhaust passages that extend from the first and second exhaust ports, respectively, to the first exhaust gas outlet and third and fourth exhaust passages that extend from the third and fourth exhaust ports, respectively, to the second exhaust gas outlet. | 01-12-2012 |
| 20120006295 | ENGINE ASSEMBLY INCLUDING ASYMMETRIC EXHAUST VALVE CONFIGURATION - An engine assembly may include an engine structure, a first valve and a second valve. The engine structure may define a combustion chamber and first and second exhaust ports in communication with the combustion chamber. The first valve may be arranged within the first exhaust port and have a first surface area. The second valve may be arranged within the second exhaust port and have a second surface area greater than the first surface area. | 01-12-2012 |
| 20120125282 | ENGINE ASSEMBLY INCLUDING COMBUSTION CHAMBERS WITH DIFFERENT PORT ARRANGEMENTS - An engine assembly may include an engine block, a first piston, a second piston, and a cylinder head. The first piston may be located in a first cylinder bore and the second piston may be located in a second cylinder bore. The cylinder head may be coupled to the engine block and cooperate with the first cylinder bore and the first piston to define a first combustion chamber and with the second cylinder bore and the second piston to define a second combustion chamber. The cylinder head may define a first intake and exhaust port arrangement in communication with the first combustion chamber and may define a second intake and exhaust port arrangement in communication with the second combustion chamber. The second intake and exhaust port arrangement may include a greater total number of ports than the first intake and exhaust port arrangement. | 05-24-2012 |
| Patent application number | Description | Published |
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| 20090023107 | Dental Instruments With Stress Relief - The present invention relates to a unique solution for relieving repetitive stress to dental professionals during the course of a day and is directed to sets of identical instruments, having handles made with varying diameters for grasping, designed to be used interchangeably throughout the day, thus cutting down on the repetitive grasping action through the change of grasp. Therefore, even if a dental professional uses the same type of instrument throughout the day, the hands, wrists and elbows can experience varying rather than repetitive action because the positioning of the hands, wrists and elbows are interchanging throughout the day. The dental instrument may also be ergonomically designed. Additionally, the instrument may also have a vibratory module. Further, a rotator may also be implemented. | 01-22-2009 |
| 20090081610 | DENTAL PROPHYLAXIS DEVICES - The present invention is directed to dental prophylaxis devices that improve portability, maneuverability and aid in retaining clean conditions for use on dental patients, particularly to dental handpieces. The present invention is also directed prophylaxis or prophy angles for use with such handpieces. In general, a dental prophylaxis device includes a handpiece and a prophy angle which includes a driven shaft and a prophy cup attached for rotation thereto. The handpiece generally includes a body which houses a rotational source coupled to an output shaft which couples to the driven shaft in the prophy angle via angled gear interfaces on the output shaft and the driven shaft. | 03-26-2009 |
| 20090142724 | ILLUMINATION SYSTEM FOR DENTISTRY APPLICATIONS - A dental illumination system includes an adjustable self-supporting frame and a lamp head coupled to the frame. The lamp head includes a housing and a spacer having formations that is adapted to removably mechanically couple the lamp head to a reference device, again having formations, for facilitating illumination of a tooth by a light source contained within the lamp head. The spacer and lamp head may be formed integrally. If formed separately, both the lamp head and the spacer may include formations. | 06-04-2009 |
| 20090152300 | Multi-Compartment Devices Having Dispensing Tips - The present invention relates to multi-compartment devices having a pre-applied dispensing element. The device is adapted for dispensing multi-component compositions that are kept separate prior to use. Supplying a pre-applied dispensing element facilitates and simplifies the dispensing operation during use and reduces the chance of misuse due to improper application of the mixing element, loss and/or damage of the component. | 06-18-2009 |
| 20090233254 | Dental light devices having an improved heat sink - The present invention relates to a heat sink material that can more efficiently remove or divert heat from a light source or sources with a given weight of heat sink material when compared to a heat sink made of a solid block of thermally conductive material such as metal. It further relates to a heat sink that can more efficiently remove or divert heat from a curing light device when a reduced weight of heat sink material is used. The inventive heat sink has at least one suitable phase change material including organic materials, inorganic materials and combinations thereof. These materials can undergo substantially reversible phase changes, and can typically go through a large, if not an infinite number of cycles without losing their effectiveness. | 09-17-2009 |
| 20110059030 | Dental Whitening Compositions - A two-component whitening system has a de-sensitizing effect as well as re-mineralizing capability. The system may be an unfoamed, a foamed or a foamable composition. | 03-10-2011 |
