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| Number | Title | Issue Date |
| 8136496 | Valve rotator assembly A valve rotator for use in an internal combustion engine. The valve rotator including a plurality of retention members, each able to removeably and rotateably couple the stationary housing to the rotating body. The plurality of retention members are defined by a plu... | 03/20/2012 |
| 8109249 | Valve control for a gas exchange valve in an internal combustion engine A valve control for a gas exchange valve of an internal combustion engine includes at least one spring element for preloading the valve in an end position and a fixing device for the releasable fixing of the valve. The spring element in a moveable insert, which by m... | 02/07/2012 |
| 8079339 | Reciprocable member with anti-float arrangement An exhaust valve arrangement includes a cylinder having a top end, an exhaust conduit connected to the cylinder by an opening in the top end of the cylinder, the opening comprising a valve seat, a valve member comprising a valve stem and a valve head on the valve st... | 12/20/2011 |
| 8025039 | Valve spring device and valve train of internal combustion engine using the same A port is formed in a cylinder head of an engine. The port is opened and closed by a valve. A valve spring device is provided with a first spring and a second spring. The second spring is contained in a housing and held by a stopper in a manner such that it is compr... | 09/27/2011 |
| 7819102 | Valve driving device for internal combustion engine A lost motion spring is disposed to contact at one end an oscillating member interposed between a cam and a valve for synchronizing the oscillating of the valve with the rotation of the cam. The lost motion spring impels the oscillating member toward the cam. A spri... | 10/26/2010 |
| 7765973 | Motorcycle provided with valve-operating mechanism The present invention provides a motorcycle having a valve-operating mechanism for actuating a valve which opens and closes a combustion chamber of an internal combustion engine. The valve-operating mechanism includes a biasing means for biasing the valve toward a v... | 08/03/2010 |
| 7401582 | Camshaft phaser having designated contact vane In a vane-type camshaft phaser, one vane extends over a much larger internal angle than the other two vanes. Because of its size and strength, the large vane is the vane designated for contact with the stator. The other vanes and lobes have extra clearance to preven... | 07/22/2008 |
| 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 |
| 7165521 | Variable valve timing control device A variable valve timing control device includes a rotational shaft, a rotation transmitting member assembled around the rotational shaft, and a vane assembled to one of the rotational shaft and the rotation transmitting member. The variable valve timing control devi... | 01/23/2007 |
| 7156058 | Variable valve actuator Actuators, and corresponding methods and systems for controlling such actuators, provide independent lift and timing control with minimum energy consumption, while supplying sufficient supplemental energy to overcome friction. In an exemplary embodiment, an actuatio... | 01/02/2007 |
| 7140337 | Valve gear mechanism In a valve gear mechanism of an internal combustion engine, there is provided a valve opening and closing a combustion chamber, a spring device which generates a force pressing the valve toward a valve seat, a drive mechanism driving the valve in an opening directio... | 11/28/2006 |
| 7048592 | Fastener device for elongated, flat objects, in particular flat conductor strips A device for fastening objects such as flat conductor strips to a substrate comprises a pedestal and separate object holders. Each object holder has an object holding portion and a fastening portion by which the object holder is attached to the pedestal. ... | 05/23/2006 |
| 7044433 | Valve spring mechanism A valve spring mechanism is provided which is suitable for use with the inlet or exhaust valves of an internal combustion engine, and includes a valve head and a valve stem. The mechanism includes a piston/cylinder arrangement in which the cylinder surrounds a porti... | 05/16/2006 |
| 6978748 | Hydraulically controlled actuator for actuating gas exchange valve on the exhaust side of an internal combustion engine A hydraulically controlled actuator for actuation of an exhaust-side gas exchange valve of an internal combustion engine, containing a control piston that is displaceable within a cylinder and, with piston sides facing away from one another, delimits pressure chambe... | 12/27/2005 |
| 6941914 | Internal combustion engine A twin cylinder engine, includes a pair of cylinder members mounted to mounting surfaces of a crankcase, and cylinder heads mounted to the cylinder members. The cylinder members are modular components, which may be pre-assembled with components of the valve train as... | 09/13/2005 |
| 6938597 | Variable spring force intake valve assembly Disclosed herein is a variable spring force intake valve for use in two- or four-stroke internal combustion engines. The device comprises an intake valve body and a torsion spring attached to a gear and rod assembly. Manipulation, via manual or automated means, of t... | 09/06/2005 |
| 6811143 | Valve spring assembly and installation method A valve spring assembly includes a hollow valve spring plate and a locking element retained by a retainer both received in the interior of the hollow valve spring plate. The locking element is removable from the valve spring plate while the retainer is received by t... | 11/02/2004 |
| 6745738 | Pneumatic valve return spring A valve spring device using pressurized gas for use in biasing a reciprocating valve which moves between a seated position and open position. The device features a static housing having a static chamber what is translateably engaged with dynamic housing. Chambers in... | 06/08/2004 |
| 6725820 | Valve-operating mechanism in engine A valve-operating mechanism includes cam followers carried on an engine body 1 with their tip ends being in sliding contact with the cam, rocker arms integrally connected to the cam followers and carried on the engine body coaxially with said cam followers wi... | 04/27/2004 |
| 6601552 | Hydraulically controllable globe valve A hydraulically controllable globe valve having a stem piston to which pressure can be applied by a spring connected to a pressure source, with the stem piston being able to move from a first end position in the direction of a second end position. Pressur... | 08/05/2003 |
| 6564764 | Switchable tappet for directly transmitting a cam lift onto a tappet push rod A switchable tappet for directly transmitting a cam lift onto a tappet push rod, includes a housing having a push rod distal end which is formed with a ramp surface for contact by a cam. An inner element is placed in a recess of thehousing and has a push ... | 05/20/2003 |
| 6532925 | Stamped valve spring and retainer A bias element which urges the valves in an internal combustion engine into their closed positions and includes a pair of arms and a bight portion connecting the two arms. Each arm has an aperture therein with at least one arm having an aperture that is k... | 03/18/2003 |
| 6532922 | Variable valve timing control device A variable valve timing control device includes a relative rotation control mechanism restricting relative rotation between the housing member and the rotor member at an intermediate phase position between a most advanced angle phase position and a most r... | 03/18/2003 |
| 6491012 | Rocker arm assembly having a spring clip valve guide A rocker arm assembly having a main body with side walls and a push rod contacting portion spaced away from a valve stem contacting portion is disclosed. The valve stem contacting portion further includes a spring clip mounted thereon. The arms of the spr... | 12/10/2002 |
| 6460495 | Switchable support element In a switchable support element (1) for a valve train of an internal combustion engine, the lost motion spring (8) of the valve train is made as a torsion spring. This spring is arranged outside of the support element (1) and only the legs and the arms of... | 10/08/2002 |
| 6457447 | Valve timing adjusting device A seal plate partitions a sectorial space which houses a vane and a circumferential groove which houses a torsion spring, so that the sectorial space is formed to prevent the communication between an advance angle pressure chamber and a retard angle press... | 10/01/2002 |
| 6450138 | Valve timing adjusting device A valve timing regulation device for regulating the timing of the opening and closing of the valves in an internal combustion engine, includes: a rotor urging member 40, 41 for urging the rotor 18 toward a predetermined lock position with respect to the h... | 09/17/2002 |
| 6443111 | Poly valve system for internal combustion engines A poly valve system for an internal combustion engine having at least one cylinder having a bore, a piston capable of reciprocal travel within the bore, a cylinder head adjacent the bore, and a combustion chamber defined between the cylinder head and the ... | 09/03/2002 |
| 6439184 | Valve timing adjusting system of internal combustion engine An effective range of urging force of an assist spring is between a maximum retarded phase and a predetermined phase of a camshaft, a vane rotor and vanes. The predetermined phase is equal to an intermediate locking phase of the camshaft, the rotor and th... | 08/27/2002 |
| 6427654 | Device for changing the control timing of the gas exchange valves of an internal combustion engine, in particular a hydraulic camshaft adjustment device of the rotary piston type A hydraulic camshaft-adjusting device of the rotary piston type that includes of a drive gear (2) directly connected to a crankshaft and an impeller that is directly connected to a camshaft (3). The drive gear (2) has a cavity formed from a perimeter wall... | 08/06/2002 |
| 6418892 | Adjustable device for valve control and method for adjusting same The invention concerns a valve controlling device with linear displacement along an axis comprising a number of actuators equal to that of the valves. Each actuator has a ferromagnetic blade fixed to a valve push rod and at least a return spring whereof o... | 07/16/2002 |
| 6415751 | Gas exchange valve control for internal combustion engines with an electromagnetic actuator, equipped with gas springs A gas exchange valve control for internal combustion engines includes an electromagnetic actuator equipped with gas springs. The gas exchange valve control has an armature, which drives the gas exchange valve and is arranged to oscillate between stroke-se... | 07/09/2002 |
| 6405695 | Valve timing adjuster for internal combustion engine A torsion coil spring is installed in a circle groove of a chain sprocket. Both ends of the coil spring are bent in a radially outward direction. The first bent end is fit to a fixed pin protruding from the chain sprocket, and the second bent end is fit t... | 06/18/2002 |
| 6401677 | Cam rocker variable valve train device A variable valve train device for installation in an internal combustion engine to controllably vary the intake valve lift, open duration, and timing. A rotary camshaft has a cam lobe for rotation in timed relationship to the motion of the pistons of the ... | 06/11/2002 |
| 6394416 | Device for operating a gas exchange valve In a device for operating a gas exchange valve with a hydraulic play compensating element of an internal combustion engine, which device includes an electromagnetic actuator having spaced valve opening and valve closing magnets between which an armature i... | 05/28/2002 |
| 6382153 | Partial internal guide for curved helical compression spring A variable valve actuating comprising a spring guide for use with a curved spring includes an elongate, curved guide member having a centerline. The centerline has a centerline curvature that is substantially equal to the radius of curvature of the curved... | 05/07/2002 |
| 6311654 | Valve timing adjusting device A seal plate partitions a sectorial space which houses a vane and a circumferential groove which houses a torsion spring, so that the sectorial space is formed to prevent the communication between an advance angle pressure chamber and a retard angle press... | 11/06/2001 |
| 6305336 | Electromagnetic driving device of engine valve for internal combustion engine An electromagnetic driving device of engine valve for internal combustion engine comprising an electromagnetic deriving mechanism includes a first and second electromagnets positioned opposite each other, an armature disposed in a gap formed between the e... | 10/23/2001 |
| 6302069 | Cam activated electrically controlled engine valve This invention describes an engine valve control responsive to electrical signals from a controller to open and close a valve. Power to move the valve comes from a camshaft. A disabler spring is compressed by a cam lobe and held compressed by its solenoid... | 10/16/2001 |
| 6302068 | Fast acting engine valve control with soft landing This invention describes an engine valve control responsive to electrical signals from a controller to open and close valves. Power to move the valves comes from a conventional camshaft. A disabler spring is compressed by a cam lobe and held compressed by... | 10/16/2001 |
