Class / Patent application number | Description | Number of patent applications / Date published |
123900440 | Cam engaged | 37 |
20080236532 | HIGH STIFFNESS LOW MASS ROCKER ARM - A cam-follower rocker arm is provided comprising a flat single plate body containing an axle that extends perpendicular from the vertical wall area for making contact with a valve and a second pivot point axle. The pivot point for the cam-follower rocker arm may be located centrally or at the end of the cam-follower rocker arm that is opposite the cam-follower rocker arm valve arm. An external cam-follower bearing is mounted on the axle and extends on each side of the flat plate wall. The cam-follower rocker arm of the invention is characterized by a relatively reduced mass and has a stiffness that exceeds limits achieved by known prior art designs for an overhead cam and cam-follower valve train; the gain in stiffness being attributed to the body's flat plate cross-section relative to conventional prior art cam-follower rocker arms that have a U-shape or a dual wall cross-section. | 10-02-2008 |
20080271693 | DEACTIVATING ROCKER ARM / MECHANICAL LASH ADJUSTMENT SYSTEM - A deactivating rocker arm mechanical adjustment system for internal combustion engines is provided wherein a lash adjustment screw which has eccentric cam and a feature by which the screw can be rotated using a tool. The adjustment screw is installed a valve actuation section of a split rocker arm wherein the cam end of the adjustment screw engages a feature of the cam follower section of the split rocker arm. When the lash adjustment screw is rotated, the design of the cam is such that the angular orientation of the valve actuation and cam follower sections is varied and in turn varies the distance or lash between the cam follower section latch pin and the receiving latch pin hole in the valve actuation section. The lash adjustment screw is rotated until a previously specified lash is obtained and then a jam nut is tightened to prevent rotation of the lash adjustment screw. Valvetrain component design may be altered that other than threaded means may be used to control the rotational orientation of the adjustment cam. An additional feature of the invention is that in the preferred embodiment, the lash adjustment screw provides a valve actuation section feature upon which a lost motion spring is mounted. | 11-06-2008 |
20090007870 | SHEET STEEL ROCKER ARM - A rocker arm ( | 01-08-2009 |
20090038572 | Cam actuated roller assembly and clad roller pin for same - Cam actuated systems, such as valve trains for an engine, typically bring cam lobe action to the engine valve via a linkage that includes a cam actuated roller assembly which may be either a rocker or a lifter. These cam actuated rocker assemblies include a housing with a pair of arms with roller support bores there through. A roller support pin is received in the roller support bores, and rotationally supports a roller mounted about the roller pin and between the arms of the housing. The roller pin may include a relatively hard and inexpensive core, such as steel, cladded with a relatively soft more expensive metal, such as bronze. | 02-12-2009 |
20090050091 | CAM FOLLOWER APPARATUS - As this radial needle bearing | 02-26-2009 |
20090064954 | SWITCHABLE CAM FOLLOWER OF A VALVE TRAIN ASSEMBLY OF AN INTERNAL COMBUSTION ENGINE - A switchable cam follower of a valve train assembly of an internal combustion engine is proposed, with an external lever that encloses an internal lever with its arms, of which components, that can deviate from each other flexibly, run on an axis that is attached to a valve side end, and the internal lever on an underside on the valve side end possesses a mechanism for a gas exchange valve as well as a complementary surface at the other end for storage on a head of a support element. A special characteristic is that guidance plates for the gas exchange valve come out from the underside of the external lever. That way, the switchable cam follower can be made narrower at least on the valve side. In addition, development of the mechanism for the gas exchange valve on the internal lever is simplified. | 03-12-2009 |
20100064999 | CAM FOLLOWER - A cam follower for actuating a gas exchange valve of an internal combustion engine, which has a lifting body cold formed from sheet metal and that forms, on a valve-sided lifting section which has two lateral walls and a first base section connecting the walls, a cross-sectional profile which is open towards the gas exchange valve in a U-shaped manner, and on a joint-sided lifting section that has lateral walls and a second base section connecting the walls, a modifiable cross-sectional profile which is initially open towards the gas exchange valve in a U-shaped manner, the U-shape adopting a trough shape that has a protruding annular cavity. The trough shape adjacent to an annular cavity on the side of the valve-sided lifting section is M-shaped and has two free recesses open towards the gas exchange valve and extend between one of the lateral walls and the second base section. | 03-18-2010 |
20100132644 | VARIABLE VALVE ACTUATING MECHANISM WITH SUMMATION CAM - A mechanism for actuating a poppet valve ( | 06-03-2010 |
20100139595 | END PIVOT VALVE TRAIN - An end pivot valve train is provided in a cylinder head to open and close a cylinder valve. The end pivot valve train includes a cam follower forcing the cylinder valve, and a cam holder assembled onto an upper portion of the cylinder head and includes a receiving groove to receive the cam follower therein, wherein the cam holder has a protrusion configured and dimensioned to interfere with an upper surface of the cam follower when the cam follower rotates such that a longitudinal edge thereof moves up. | 06-10-2010 |
20100236507 | SWITCHABLE CAM FOLLOWER OF A VALVE TRAIN OF AN INTERNAL COMBUSTION ENGINE - Proposed is a switchable cam follower ( | 09-23-2010 |
20100300390 | Swithchable finger lever for a valve train of an internal combustion engine - A switchable finger lever for a valve train of an internal combustion engine, said finger lever comprising an inner lever comprising on an underside on one end, a support for a gas exchange valve and on another end, a contact surface for a head of a support element, said inner lever further comprising on the one end, axle stubs protruding on two sides of the inner lever, a first outer arm extending for pivoting relative to the inner lever on one of the axle stubs and a second outer arm extending for pivoting relative to the inner lever on another one of the axle stubs, said outer arms extending in direction of the another end while flanking outer walls of the inner lever and being made as separate parts from each other, a cam contacting surface being arranged on an upper side of each outer arm while, in the region of the another end, a coupling device for an optional connection of the outer arms to the inner lever is seated in the inner lever, and a restoring spring means for each outer arm acts at one end against the inner lever and at another end against the respective outer arm. | 12-02-2010 |
20100319642 | ROLLER FOLLOWER, VALVE TRAIN, INDUCTION HARDENING APPARATUS, METHOD OF HEAT TREATMENT OF SHAFT MEMBER, METHOD OF MANUFACTURING SHAFT, AND SHAFT - A roller follower includes a roller ring, a shaft and a plurality of rollers. At least one of the roller ring, the shaft and the rollers is a steel member made of steel containing 0.7 to 2.4% carbon and 10.0 to 20.0% chromium, with remainder iron and impurities. In addition, carbide containing at least any one of iron and chromium as well as carbon and having an area of 12.6 μm | 12-23-2010 |
20110132304 | CAM FOLLOWER FOR ROCKER ARM AND CAM FOLLOWER DEVICE - A cam follower for a rocker arm includes a cylindrical outer ring ( | 06-09-2011 |
20110197842 | SWITCHABLE ROLLER FINGER FOLLOWER - The finger follower employs two independent lost motion arms and a rod which moves longitudinally to lock both arms. The rod is transversely mounted in the follower. In order to avoid premature locking, each arm has a chamfered surface on a top wall to force the rod out of engagement with the arm during upward movement of the arms, to protect premature movement of the rod from an unlocked position to a locked position. | 08-18-2011 |
20110214636 | VARIABLE VALVE OPERATING APPARATUS FOR INTERNAL COMBUSTION ENGINE - To provide a variable valve operating apparatus for an internal combustion engine which can reduce a range where heat treatment is required, thereby favorably suppressing distortion which occurs in a camshaft during heat treatment, to a low level. A changeover mechanism is provided which includes a slide pin which is adapted to move within a predetermined reciprocating range thereby switching between operational states of a variable mechanism, and a guide rail provided in an outer peripheral surface of the camshaft and guides the movement of the slide pin from one end to a remaining end of the reciprocating range. A projection part which is engageable with the guide rail is provided in the slide pin. Restriction means which performs at least one of a restriction of contact between a top surface of the projection part and a bottom surface of the guide rail opposing the projection part, and a restriction of movement of the slide pin beyond a distance from the above-described one end to the above-described remaining end. | 09-08-2011 |
20110226208 | SWITCHING ROCKER ARM - A rocker arm for engaging a cam is disclosed. An outer arm and inner arm are configured to transfer motion to a valve of an internal combustion engine. A latching mechanism includes a latch, sleeve and orientation member. The sleeve engages the latch and a bore in the inner arm, and also provides an opening for an orientation member used in providing the correct orientation for the latch with respect to the sleeve and the inner arm. The sleeve, latch and inner arm have reference marks used to determine the optimal orientation for the latch. | 09-22-2011 |
20110226209 | SWITCHING ROCKER ARM - A rocker arm for engaging a cam is disclosed. An outer arm and inner arm are configured to transfer motion to a valve of an internal combustion engine. A latching mechanism includes a latch, sleeve and orientation member. The sleeve engages the latch and a bore in the inner arm, and also provides an opening for an orientation member used in providing the correct orientation for the latch with respect to the sleeve and the inner arm. The sleeve, latch and inner arm have reference marks used to determine the optimal orientation for the latch. | 09-22-2011 |
20120024248 | DRAG LEVER - A drag lever for actuating a gas exchange valve of an internal combustion engine. The drag lever includes an oblong lever body formed of sheet metal material, wherein the lever body has a bottom and side walls integrally formed at an angle of about 90° onto the bottom on both sides. A first end section of the lever body includes a joint socket formed into the bottom between the side walls. The joint socket serves to pivotally moveably support the drag lever on a joint head mounted stationary in the internal combustion engine. A middle section of the lever body is provided with a cam gripping surface, and a second end section of the lever body has a contact surface extending on the bottom. The contact surface serves for actuating the gas exchange valve. The lever body is dimensioned so as to have essentially the same width in a cross section through the joint socket and in a cross section through the middle section. Starting from the first end section of the lever body, the angle of the side walls increases continually to about 90°. | 02-02-2012 |
20120210965 | VALVE TRAIN DEVICE AND CYLINDER HEAD PROVIDED WITH SAME - A valve train device installed in a cylinder head of an engine and driven by a camshaft including a valve unit having an intake valve and an exhaust valve communicated with a combustion chamber of an engine, each of the intake valve and exhaust valve having a linearly extending stem portion and driven in an extending direction of the stem portion; a valve lifter disposed between one end side of the stem portion located apart from the combustion chamber and the camshaft to transmit power from the camshaft to the valve unit; a lost motion unit that interrupts power transmission from the valve lifter to the valve unit; a first spring urging the valve unit in a direction to close the intake valve or exhaust valve; and a second spring having a diameter lager than that of the first spring and urging the lost motion unit against the valve lifter. | 08-23-2012 |
20120222639 | VALVE TRAIN SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - A valve train system for an internal combustion engine includes an exhaust valve moveable between an exhaust closed position and an exhaust open position. A camshaft includes a main exhaust lobe for moving the exhaust valve between the exhaust closed position and the exhaust open position for expelling exhaust constituents from the combustion chamber and an exhaust rebreath lobe for moving the exhaust valve between the exhaust closed position and the exhaust open position for allowing exhaust constituents into the combustion chamber. A two-step device is provided for transmitting motion from the camshaft to the exhaust valve and is switchable between a motion transmitting position and a motion preventing position such that the motion transmitting position allows motion to be transmitted from the exhaust rebreath lobe to the exhaust valve and the motion preventing position prevents motion from being transmitted from the exhaust rebreath lobe to the exhaust valve. | 09-06-2012 |
20120260874 | FINGER FOLLOWER OF A VALVE TRAIN - The invention relates to a finger follower, or lever ( | 10-18-2012 |
20120260875 | FINGER FOLLOWER LEVER OF A VALVE TRAIN AND METHOD FOR PRODUCING THE SAME - A finger follower lever of a valve train, which has a lever body that is a pressed and punched component made of sheet metal and has a U-shaped cross-section with two largely parallel side walls. A roller rotatably mounted between the side walls on a pin. The pin is uniformly hardened and inserted at each end into a hole punched out of the side wall and is staked or caulked at the ends. To enable the holes to be punched out simultaneously in opposite directions of a relatively narrow lever body, at least one of the two side walls has, at least on the outside thereof, a flat recess in the region of the hole. | 10-18-2012 |
20120291736 | CAM FOLLOWER FOR ACTUATING A GAS EXCHANGE VALVE - A cam follower for actuating a gas exchange valve of an internal combustion engine. The cam follower has a housing and a cam roller mounted in a recess of the housing for disengaging a cam of a camshaft. The cam roller is mounted radially on a bearing journal by a needle bearing that extends in the bearing bore thereof. The width of the needle bearing is significantly greater than the width of the cam roller in the region of the cam disengagement. The width of the needle bearing is also significantly greater than the width of the cam roller in the region of the bearing bore and significantly greater than the clear space between roller contact surfaces which delimit the recess and on which the cam roller runs axially with the end faces thereof. | 11-22-2012 |
20130000582 | SINGLE LOBE DEACTIVATING ROCKER ARM - A deactivating rocker arm for use with a cam having at least one no-lift safety lobe is provided. Safety lobe contacting surfaces on the rocker arm are configured for contact with safety lobes during abnormal operation of the rocker arm. When the rocker arm is deactivated, the safety lobe contacting surfaces may come into contact with safety lobes when excessive pump-up of a lash adjuster brings the rocker arm undesirably close to the rotating cam. This contact limits the range of motion of the rocker arm during certain instances of abnormal operation, promoting more effective transition between deactivated and activated states and preventing damaging contact between the rocker arm and the cam lobe. | 01-03-2013 |
20130133601 | DETENT STRUCTURE FOR ROCKER SHAFT - A detent structure for a rocker shaft includes a camshaft, a rocker shaft, a shaft support, and a detent part. The camshaft is provided at a cylinder head of an engine. The shaft support is provided at the cylinder head to support the rocker shaft and has a support surface supporting the rocker shaft. The detent part is to prevent rotation of the rocker shaft. The detent part includes a bolt insertion hole and a detent bolt. The bolt insertion hole is displaced from a central axis of the rocker shaft and passes through the rocker shaft. The detent bolt is provided in the bolt insertion hole and is fastened to the shaft support to pass across the support surface. | 05-30-2013 |
20130167788 | Valve Control for at Least One of an Internal Combustion Engine - Valve control for at least one valve of an internal combustion engine, in which the movement of at least one cam ( | 07-04-2013 |
20130186358 | ROLLER FINGER FOLLOWER WITH SWIVELABLE VALVE PALLET - A finger follower having an inner and outer body and a torsional lost motion spring acting between the bodies is provided. A roller cam follower is connected to the inner body. The inner body is switchable from a fixed state, in which it moves with the outer body to transfer a cam lift to a valve stem, to a released state, in which the inner body can move relative to the outer body so that the cam lift is not transferred to the valve stem. A separate valve pallet that acts on the valve stem is press fit or otherwise rotationally fixed on a pivot pin connecting the inner and outer bodies. | 07-25-2013 |
20130199480 | INVOLUTE SPRING PALLET COMPONENT FOR A CYLINDER DEACTIVATION SWITCHABLE ROLLER FINGER FOLLOWER - A method of manufacturing spring pallets of a switchable roller finger follower. The method includes the steps of forming the spring pallets of the roller finger follower as a single unit, forming a material web between the spring pallets, and separating the spring pallets apart from each other. Also, an intermediate assembly of the spring pallets of the roller finger follower is disclosed. The intermediate assembly includes a first spring pallet, a second spring pallet, and a material web which extends between the spring pallets, and adjoins the spring pallets together. Further, a method of manufacturing an inner arm of the switchable roller finger follower is disclosed in which the inner arm is formed by sheet metal, preferably by stamping. | 08-08-2013 |
20130220254 | ROCKER ARM - Rocker arm for actuating at least one gas exchange valve of an internal combustion engine having an elongated lever body ( | 08-29-2013 |
20130298858 | Valve Gear - A valve gear operates an intake valve for a plurality of cylinders. The valve gear includes a driving cam shaft that rotates with an engine crankshaft, a driven member operated by a driving cam of the driving cam shaft, a pivot member which pivots in association with movement of the driven member causing the intake valve to reciprocate, and a valve gear case accommodating the cam shaft, the driven member, the pivot member, and a control shaft. The valve gear case mounts to an intake-side part of a cylinder head, and includes end wall portions at both ends in a longitudinal direction, an inter-cylinder wall portion, and connection wall portions connecting the end wall portions and the inter-cylinder wall portion. | 11-14-2013 |
20150377081 | CAM ROCKER LEVER FOR OPERATING VALVES - A cam rocker lever comprises an annular piece with an inner diameter, a cam lobe, a first linear portion, and a second linear portion. The cam lobe is disposed within the inner diameter of the annular piece. The first linear portion extends from a first side of the annular piece, and a second linear portion extends from a second side of the annular piece opposite the first side. The first linear portion is configured to connect to a stem of a valve such that the valve is displaced when the first linear portion is displaced. | 12-31-2015 |
20150377082 | ENGINE ROCKER ARM AND ROLLER ASSEMBLY - An engine rocker arm and roller assembly is disclosed which may include a rocker arm having a first end and a second end, with a rocker arm being adapted to pivot about a pivot aperture therein. The engine rocker arm and roller assembly may further include an axle mounted in the second end with the axle being made of bronze and having a stepped profile. The roller may be rotatively mounted to the axle. | 12-31-2015 |
20150377083 | CAM PROFILE SUMMATION MECHANISM - A rocker system comprising a summation lever and at least one valve actuating lever for use in a valve train of the type having two cams, a summation lever having followers engaging with both cams and a valve actuating lever pivotally connected to the summation lever for opening and closing an engine valve in dependence upon the sum of the lifts of the two cams, characterised in that the summation lever is assembled from opposed face plates and a separately formed hub. | 12-31-2015 |
20150377093 | SINGLE LOBE DEACTIVATING ROCKER ARM - A deactivating rocker arm can include an outer arm extending between a first end and a second end. The outer arm can have a first outer side arm and a second outer side arm. The first and second outer side arms can define outer pivot axle apertures and axle slots. The inner arm can be disposed between the first and second outer side arms. The inner arm can have a first inner side arm and a second inner side arm. The first and second inner side arms can define bearing apertures. A bearing can be mounted in the bearing apertures of the inner arm and the axle slots of the outer arm. The axle slots can be configured to permit lost motion movement of the bearing. A first biasing member can be disposed on the second end of the outer arm and in biasing contact with the bearing. | 12-31-2015 |
20160138541 | MECHANICAL SYSTEM FORMING A CAM FOLLOWER OR A ROCKER ARM - A mechanical system that forms one of a cam follower or a rocker arm. The mechanical system comprises a support element including a first body portion and a second body portion, a pin extending between two opposite ends along a first axis and supported by the first body portion of the support element, and a roller mounted on pin, movable in rotation relative to the pin around the first axis and adapted to roll on a cam. The mechanical system further comprises a spacing element comprising a first body portion connected to the second body part of the support element and a second body portion adapted to be supported by a movable support. | 05-19-2016 |
20160153320 | VALVE-ACTUATING LEVER FOR RECIPROCATING-PISTON INTERNAL COMBUSTION ENGINES | 06-02-2016 |
20160153321 | MECHANICAL SYSTEM FORMING A CAM FOLLOWER OR A ROCKER ARM, INJECTION PUMP OR VALVE ACTUATOR COMPRISING SUCH A MECHANICAL SYSTEM AND METHOD FOR MANUFACTURING SUCH A MECHANICAL SYSTEM | 06-02-2016 |