Class / Patent application number | Description | Number of patent applications / Date published |
123900520 |
Lash adjustment
| 65 |
123900500 |
Rotation prevention
| 27 |
123900510 |
Composition, surface treatment manufacture | 5 |
20090217896 | VALVE DRIVE FOR AN INTERNAL COMBUSTION ENGINE - Proposed is a valve drive for an internal combustion engine, having a gas exchange valve ( | 09-03-2009 |
20090283063 | Wear Resistant Camshaft and Follower Material - A materials combination for a camshaft and follower of an engine valve train provides excellent wear resistance. The camshaft or camshaft lobes are made from a malleable cast iron and the cam followers are made from a carbonitrided 52100 or 4130 steel to provide excellent wear resistance equivalent to diamond-like coatings at greatly reduced cost. | 11-19-2009 |
20140000539 | IMPACT DAMPENING TAPPET | 01-02-2014 |
20140326204 | CAM FOLLOWER SYSTEM FOR ENGINE - Various systems are provided for a cam follower of a cam follower system. In one embodiment, a cam follower of a cam system comprises a tappet positioned between a cylinder valve and a camshaft, the tappet configured to drive the cylinder valve, a roller, and a pin coated with a diamond-like carbon coating coupling the roller to the tappet, the pin having a depressed contour on an outer surface of the pin. | 11-06-2014 |
20160040562 | METHOD FOR MANUFACTURING A SLIDING TAPPET - A method for manufacturing a sliding tappet of a valve train of an internal combustion engine may include the steps of: providing a main body; applying a coating at least on a contact surface of the main body configured for contacting an associated cam. The coating may include tungsten carbide and cobalt, and the coating may be applied via high velocity oxygen fuel spraying. The method may further include the step of performing a surface finishing on the coating after the coating is applied. | 02-11-2016 |
123900490 |
Cushion and silencer | 3 |
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 |
20120255510 | CAM SYSTEM HAVING COMPLIANT FOLLOWER - A compliant follower cam system includes a cam rotatable about a cam rotational axis continuously aligned with a cam displacement axis. The cam has a body center spaced from the rotational axis. A compliant follower has an elastically deformable first contact wall positioned proximate to a cavity. The first contact wall is directly contacted by the cam body outer surface. A compliant follower non-deflected condition occurs when a first contact wall outer surface directly contacts the cam body outer surface prior to deflection of the first contact wall, with the cam body center out of alignment with the displacement axis. Rotating the cam moves the body center toward the compliant follower into alignment with the displacement axis. The cam thereby deflects the first contact wall into the cavity defining a compliant follower deflected condition and creates a biasing force releasably frictionally engaging the first contact wall and cam. | 10-11-2012 |
20140251251 | VALVETRAIN IMPACT ABSORBER - Embodiments may provide a valve train for an engine including a valve stem configured for reciprocating movement to open and close a port in a combustion chamber of the engine. The valve train may also include an elastomeric element coupled with the valve stem, and a mass may be coupled with the elastomeric element and able to move relative to the valve stem. | 09-11-2014 |
Entries |
Document | Title | Date |
20080264370 | SWITCHABLE COMPONENT FOR A VALVE DRIVE OF AN INTERNAL COMBUSTION ENGINE - A switchable component ( | 10-30-2008 |
20080314348 | VALVE OPERATING SYSTEM AND ENGINE INTAKE CONTROL SYSTEM - A valve operating system that includes a drive shaft, a drive lever that is fixedly provided thereon and can pivot in a direction of movement of a valve body, a follower arm that is fixedly provided on the valve body, a link, a first connecting shaft that connects one end of the link and the drive lever, and a second connecting shaft that connects the other end of the link and the follower arm; in response to a movement of the valve body from a first position to a second position by pivoting of the drive lever, a center of the first connecting shaft approaches from one side a straight line connecting two centers of the drive shaft and the second connecting shaft, and after the valve body reaches the second position, further pivoting of the drive lever is carried out through a predetermined angle so that the center of the first connecting shaft moves to the other side of a dead point on the straight line. Thereby a valve body can be held at one position with hardly any dependence on the output of an actuator, thus greatly reducing the load on the actuator. | 12-25-2008 |
20090013950 | DUAL VALVE LIFTER ASSEMBLY - The dual valve lifter assembly has a dual valve lift with two hydraulic lash adjusters therein and a guide for orienting and preventing rotation of the dual valve lifter. The guide has four ledges and the dual valve lifter has four flats which mate with the four ledges. The flats and the ledges prevent the rotation of the lifter. One pair of flats and one pair of ledges are spaced the same while the other pair of flats and the other pair of ledges are spaced at a different distance than the first pair of flats and ledges. The difference in the spacing of the pairs of ledges and flats allows for correct orientation of the lifter when mating it with the guide. | 01-15-2009 |
20090056659 | DIRECT-ACTING TYPE VALVE LIFTER FOR INTERNAL-COMBUSTION ENGINES - Objects: To provide a direct-acting type valve lifter that is simple in structure, involves a small number of components, and is capable of switching its valve lift between a high and a low lift. | 03-05-2009 |
20090151682 | VARIABLE VALVE LIFT APPARATUS - A variable valve lift apparatus according to an exemplary embodiment of the present invention includes a low lift cam, a high lift cam in parallel with the low lift cam, a low lift tappet body that selectively contacts the low lift cam, a high lift tappet body disposed within the low lift tappet body and constantly contacting the high lift cam, a guide portion that is connected with a valve and selectively connects the low lift tappet body and the high lift tappet body, and a lost motion spring that is disposed between the guide portion and the low lift tappet body and supplies restoring force to the low lift tappet body. | 06-18-2009 |
20090159029 | Switchable Tappet - The invention proposes a switchable tappet ( | 06-25-2009 |
20090173302 | SWITCHABLE DOUBLE TAPPET - A switchable double tappet ( | 07-09-2009 |
20090178638 | MULTIPLE AXLE TAPPET LIFTER ASSEMBLY - The invention allows for a larger bronze axle outer diameter for increased contact area to carry system loads in tappet body assemblies of engine valve trains; thereby, improving wear and improving the life of the tappet. Relatively small diameter steel pins are used to secure the bronze axle and because the pins are within the bronze axle they do not need to be specifically processed for stress contact or retention. The bronze axle requires the cam roller follower inside diameter to increase as well to reduce the cross section of the cam roller follower. This thinner cross section improves the rotational inertia reducing the risk of skidding at the cam-to-roller interface. Skidding at this interface significantly reduces the life of the cam roller follower and/or the cam lobe. The smaller pin diameter provides addition clearance when packaged next to an adjacent cam lobe. | 07-16-2009 |
20090199803 | Mechanical lash ring for a switchable valve train member - A switchable valve train member, such as a deactivating valve lash adjuster or a deactivating hydraulic valve lifter, including a pin housing slidably disposed within an axial bore in a body. A transverse bore in the pin housing contains a retractable locking pin that engages a feature in the body including a locking surface whereby the body and the pin housing are locked together for mutual actuation by rotation of a cam lobe. A lash ring at the outer end of the body includes a portion extending into the axial bore that limits the travel of the pin housing within the body and thereby sets the internal mechanical lash in the switchable member. The axial thickness of the lash ring may be varied between assemblies to compensate for manufacturing variation in the components and is secured to the body in any of various configurations. | 08-13-2009 |
20090314236 | LIFT TRANSMITTING COMPONENT AND METHOD OF MANUFACTURING SUCH A COMPONENT - A lift transmitting component ( | 12-24-2009 |
20100012064 | Valve lifter and surface treatment method thereof - The present invention provides a valve lifter, including a buffer layer, a Me diamond-like carbon layer having a thickness of 0.3˜0.6 μm, and a diamond-like carbon layer having a thickness of 1˜1.5 μm and a SP3 bonding fraction of 60˜70%, which are sequentially formed on a base body which is subjected to carbonitriding treatment. The valve lifter can exhibit superior low-friction characteristics and wear resistance. | 01-21-2010 |
20100012065 | MECHANICAL ROLLER TAPPET FOR AN INTERNAL COMBUSTION ENGINE - The invention proposes a mechanical roller tappet ( | 01-21-2010 |
20110132305 | VARIABLE TAPPET - The present invention relates to a variable tappet, and the variable tappet may include an inner tappet body of which a latching member connecting hole is formed thereto, a protrude portion formed to the latching member connecting hole, an outer tappet body which is disposed around the inner tappet body and slidable to the inner tappet body and a latching member which is disposed to the outer tappet body and selectively connected to the latching member connecting hole. | 06-09-2011 |
20110265752 | TAPPET | 11-03-2011 |
20120060783 | VARIABLE VALVE LIFT APPARATUS - A variable valve lift apparatus of an engine may include an inner tappet, an outer tappet centrally receiving the inner tappet, a latching unit inserted in the inner tappet and operated by a hydraulic pressure so as to selectively engage the inner and outer tappets by operation, and a protruding member that is coupled to an upper surface edge of the outer tappet so as to protrude outward from an exterior circumference of the outer tappet, and is vertically slidable along a sliding groove of a cylinder head. | 03-15-2012 |
20120073534 | VALVE LIFTER FOR INTERNAL COMBUSTION ENGINE - A valve lifter for an internal combustion engine includes a skirt portion formed in a tubular shape; and a crown portion formed integrally with an axially one end side of the skirt portion. The crown portion includes a crown surface configured to slide in contact with an outer circumferential surface of a cam. An axis of the crown portion is eccentric from a center of the cam in a width direction of the cam. The crown surface is formed in a spherical protruding shape to have its uppermost portion at a center of the crown surface. A protruding amount of the spherical protruding shape is set to range from 11 μm to 50 μm. | 03-29-2012 |
20120125277 | CAM FOLLOWER ROLLER DEVICE, NOTABLY FOR A FUEL INJECTION PUMP - Cam follower roller device, notably for an internal combustion engine fuel injection pump, comprising a tappet ( | 05-24-2012 |
20120234277 | ROLLER TAPPET - The invention concerns a roller tappet ( | 09-20-2012 |
20130014716 | MECHANICAL BUCKET TAPPETAANM Geers; ChristianAACI FuerthAACO DEAAGP Geers; Christian Fuerth DEAANM Christgen; WolfgangAACI SeukendorfAACO DEAAGP Christgen; Wolfgang Seukendorf DEAANM Straetz; ManfredAACI LeestenAACO DEAAGP Straetz; Manfred Leesten DE - A mechanical bucket tappet ( | 01-17-2013 |
20130213333 | ROLLER TAPPET - A roller tappet having a housing near whose drive side front end, two diametrically opposing flats receding from an outer wall of the housing are arranged, each of the two flats having a seat with a U-shape open in a direction towards the drive side front end. A pin is mounted in the seats, a roller serving as a run-on surface of a periodic stroke producer extends on said pin, and a support for a tappet follower element is seated axially under the roller near a driven side front end of the roller tappet. A retention element is provided for the pin in an axial direction of the pin and a retention element in the seats of the pin is provided for preventing the pin from exiting axially out of the housing, and these two retention elements are united. | 08-22-2013 |
20130340695 | ROLLER LIFTER FOR INTERNAL COMBUSTION ENGINE - A roller lifter for internal combustion engines is provided, which has higher rigidity of the lifter body, prevents cocking in the cylinder, and can achieve a size reduction. The roller lifter includes a cylindrical lifter body having a sliding surface on an outer circumferential surface thereof and a roller rotatably attached to the lifter body via an axial support pin and making contact with a rotating cam lobe. The lifter body includes a pair of support portions supporting the axial support pin. The axial support pin is mechanically fastened to the pair of support portions, with both ends thereof inserted in support holes formed in the support portions. The lifter body includes an anti-rotation retainer extending radially outward from the sliding surface. The sliding surface is formed on both front and rear sides in the sliding direction of the anti-rotation retainer. | 12-26-2013 |
20140048028 | LIFTER GUIDE ASSEMBLY FOR AN INTERNAL COMBUSTION ENGINE - A lifter guide includes a lifter guide body having an outer surface and an inner surface that extend from a first end to a second end. The inner surface defines at least one push rod passage. A plurality of compression members are provided at the first end. The plurality of compression members project proudly from the first end. The plurality of compression members are configured and disposed to be compressed by a cylinder head to retain the lifter guide in a cylinder block. The lifter guide is devoid of mechanical fasteners. | 02-20-2014 |
20140245981 | CAM FOLLOWER - A cam follower for actuating at least one gas exchange valve of an internal combustion engine is provided, including a cam contact roller that is supported by a plain bearing on a pin ( | 09-04-2014 |
20140261269 | NEEDLE ROLLER CAM FOLLOWER FOR HIGHER MILEAGE APPLICATIONS OF LIGHT, MEDIUM AND HEAVY DUTY VEHICLES - A roller assembly for a diesel engine used in a high mileage vehicle includes a roller having an exterior roller surface and an interior surface that defines a bore extending therethrough. A pin is positioned in the bore and defines an exterior pin surface. A plurality of rolling elements is positioned between the exterior pin surface and the roller interior surface. Each of the rolling elements rollingly engages the exterior pin surface and the roller interior surface. The roller assembly defines a clearance of between about 0.01 mm to about 0.03 mm between the rolling elements, the exterior pin surface and the interior surface. The roller assembly is configured to achieve extended life criteria wherein the clearance does not increase to more than 0.02 mm to 0.06 mm after 500,000 miles of travel of a vehicle powered by a diesel engine having the roller assembly installed therein. | 09-18-2014 |
20150090211 | Mechanical System, Injection Pump And Valve Actuator Comprising Such A Mechanical System And Manufacturing Method - A mechanical system, comprising a support element having an outer surface adapted to slide in a housing receiving the mechanical system, a pin extending along a first axis and comprising two opposite ends, each adapted to be fitted in the support element for radial and/or axial retention of the pin relative to the first axis, and a roller element movable in rotation relative to the pin around the first axis. The mechanical system comprises at least one outer insert positioned at the outer surface of the support element. The mechanical system can be integrated into either an injection pump or a valve actuator. | 04-02-2015 |
20150096515 | Mechanical System, Injection Pump And Valve Actuator Comprising Such A Mechanical System And Manufacturing Method - A mechanical system, comprising a support element, a pin extending along a first axis and comprising two opposite ends, each adapted to be fitted in the support element for radial retention of the pin relative to the first axis, and a roller element movable in rotation relative to the pin around the first axis. The mechanical system includes two ribs resting on either side of the ends for axial retention of the pin along the first axis. The mechanical system can be integrated into either an injection pump or a valve actuator. | 04-09-2015 |
20150361836 | PLUNGER | 12-17-2015 |
20160084116 | ROLLER TAPPET AND METHOD FOR MANUFACTURING A HOUSING ELEMENT OF A ROLLER TAPPET - A roller tappet includes a housing, and the housing includes a first housing element and a second housing element. The first housing element has a receiving region configured to receive a roller of the roller tappet, and the second housing element is separate from the first housing element and is forged. The first housing element may be formed from metal sheet. | 03-24-2016 |
20160201522 | ROLLER LIFTER | 07-14-2016 |