Class 123/90.25 - By valve-opening rocker

Subclass of Class 123 - Internal-combustion engines
Definition: Device wherein the driving means is the rocker that opens
No. of patents: 36
Last issue date: 02/14/2012

Number	Title	Issue Date
8113161	Multi-cam electric valve mechanism for engine A multi-cam electric valve mechanism for engine is disclosed, which comprises: a motor fixed on a cylinder; a motor shaft wherein one side of it connected to the motor and rotated accordingly and the other side of it symmetrically provided with a plurality of rotors...	02/14/2012
7343888	Springless valve system A poppet valve actuation system utilizing separate opening and closing cams that press against opening and closing cam followers, respectively. The opening and closing cam followers are linked to each other directly by a tension member so they move in unison. The va...	03/18/2008
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
7210435	Desmodromic valve system and retrofit kit for conventional pushrod engines including replaceable cam lobes for adjusting lift and duration and hydraulic lifters for increased reliability A desmodromic valve and cam system is provided which is adapted to be installed into an internal combustion pushrod engine. The system includes a camshaft assembly having a plurality of removably attached cam lobes installed onto a main camshaft; a valve connector a...	05/01/2007
7201122	Device for controlling valve kinematics A device for controlling the variation of the opening and closing times and durations of a valve (8) comprises an elastic means (18) acting upon an assembly consisting of a lever device (1) and a valve stem (11) not in the closing directi...	04/10/2007
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
7082912	System and method for controlling engine valve lift and valve opening percentage System and method for controlling internal combustion engine valve lift and valve opening by an arrangement of cams with overlapping cams track that synchronize and vary the rise, fall, and dwell of the inlet and exhaust valves of an IC engine. ...	08/01/2006
7077088	Desmodromic valve retrofit system with replaceable cam lobes for adjusting duration and hydraulic lifters for reliability A desmodromic “springless” valve and adjustable cam system is provided which is adapted to be installed onto a head configured for an overhead cam for an internal combustion engine having at least one intake and one exhaust valve per cylinder. The system include...	07/18/2006
6968819	Variable valve actuating device To allow both the valve lift and valve timing for an engine valve to be varied in a continuous manner, the variable valve actuating device (1) comprises a camshaft (8) rotatably supported by a fixed part of the engine and provided with a cam (7)...	11/29/2005
6953014	Thermal compensating desmodromic valve actuation system A thermal compensating desmodromic valve actuation system for opening and closing at least one valve of an engine having a cam assemblage and a driving mechanism for reciprocal movement operably connected to said cam assemblage. The cam assemblage includes a cam mec...	10/11/2005
6951148	Device for converting a rotational movement into a reciprocating movement A device for transforming a rotational movement into a reciprocating to-and-fro movement has a cam element on a driven carrier shaft. The cam element has an eccentric control area, or lobe. A cam follower can be displaced or pivoted by the cam element. The cam eleme...	10/04/2005
6945206	Lobe-less cam for use in a springless poppet valve system A lobe-less cam for use in a springless poppet valve system is disclosed including a cam shaft having at least one surrounding region, at least one asymmetrical cam groove formed in the at least one surrounding region, and wherein the at least one asymmetrical cam g...	09/20/2005
6877469	Control device for an air valve of an engine The present invention provides a mechanism for controlling the intake valve of an internal combustion engine, which mechanism is capable of consuming less energy, i.e. less oil. Through uniquely designed cam and rocker as well as joining mechanism joining the rocker...	04/12/2005
6701879	Internal combustion engine An internal combustion engine having at least one combustion cylinder that includes a combustion chamber provided with gas-exchange valves, and an electrohydraulic valve control device having valve actuators that actuate the gas-exchange valves. To reduce...	03/09/2004
6598571	Cam follower with roller The cam follower with roller according to the present invention includes a cam follower body having a roller supporting portion integrally formed therein, a supporting shaft of which both ends are fixed to the roller supporting portion, and a roller rotat...	07/29/2003
6550435	Variable valve timing adjustable finger follower assembly A valve timing system for an internal combustion engine having a roller finger follower assembly including a lash adjustment mechanism. The roller finger follower assembly includes a base arm and a roller carriage that may be assembled to each other in a ...	04/22/2003
6510823	Two-cylinder overhead-valve V-engine A two-cylinder overhead-valve V-engine has two cylinders arranged so as to form a V-bank (S). Each cylinder is provided with push rods (15, 16) for operating an intake valve rocker arm (12) and an exhaust valve rocker arm (13). The push rods (15, 16) of e...	01/28/2003
6505590	Desmodromic valve designs for improved operation smoothness, stability and package space A desmodromic drive (30) for imparting reciprocal translation to a valve (32) has a cam ring (52) that rotates about an axis (42), a follower (50) that reciprocates with axial motion as the ring rotates, an endless cam track (69) on the ring, and rollers ...	01/14/2003
6491008	Variable valve timing adjustable roller rocker arm assembly A rocker arm assembly having an adjustably located cam roller that permits modification of valve timing for an internal combustion engine. An adjustment control shaft having an adjustment cam operates through a linkage to move the cam roller along the roc...	12/10/2002
6487997	Springless poppet valve system A springless poppet valve system is provided. The system includes a poppet valve movable between an open position and a closed position. The system includes an open cam and a close cam. An open rocker arm is provided which engages the open cam. The open r...	12/03/2002
6311659	Desmodromic cam driven variable valve timing mechanism A desmodromic cam driven variable valve timing (VVT) mechanism includes dual rotary opening and closing cams for actuating a rocker mechanism that drives valve actuating oscillating cams. The dual rotary cam drive positively actuates the rocker mechanism ...	11/06/2001
6244228	Rotary-to-linear motion converter and use thereof A rotary-to-linear converter for use with a valve actuation device having a linear reciprocating cam shaft having longitudinally extending cam grooves that are engaged by captive cam followers which oscillate up and down in response to sideways reciprocat...	06/12/2001
6053134	Cam operating system A cam system to generate valve actuation in an engine that includes a circular camlobe rotated about a first axis is described. The first axis is a preselected distance from the centerpoint of the circular camlobe. The cam system also includes a cam-follo...	04/25/2000
5615646	Method and apparatus for holding a cylinder valve closed during combustion An outwardly opening valve system for an engine includes an engine having a hollow piston cylinder in fluid communication with a gas passageway via an opening. The engine also has a piston bore that opens to the hollow piston cylinder. A portion of the op...	04/01/1997
5483929	Reciprocating valve actuator device A valve activation device having a linear reciprocating cam shaft having longitudinally extending cam grooves that are engaged by captive cam followers which oscillate up and down in response to sideways reciprocation of the camshaft for activating intake...	01/16/1996
5161494	Electromagnetic valve actuator An electromagnetic valve actuator for pivoting a rocker arm to open and close a valve of a four-cycle internal combustion engine. The actuator includes a rocker arm with two ends, one end being in contact with the valve. An electromagnet is provided along...	11/10/1992
5078102	Engine valve driving device An engine valve driving device includes a rocker arm attached at one end to a valve stem and carrying at its opposite end a roller which engages the surfaces of a stepped cam plate. The cam plate has a horizontal surface which includes upper and lower por...	01/07/1992
5016581	Valve mechanisms A valve stem which is located for axial movement; a valve lever is pivotally mounted at one end and is attached adjacent the other end to the end of the valve stem, the valve lever defines a track; a drive pin engages in the track the drive pin being moun...	05/21/1991
4887564	Valve actuation system for desmodromic internal combustion engines An improved internal combustion engine of the desmodromic type having a novel connection between the valve stem and the rocker arm assembly. The connection includes a shell which captures a pin which has an enlarged opening which surrounds the valve stem....	12/19/1989
4805568	Swing valve for internal combustion engines A valve assembly mounted in the head of an internal combustion engine. The valve is driven on the stem thereof in an arcuate motion so that the valve does not oscillate along its longitudinal axis, but instead swings slightly away from its longitudinal ax...	02/21/1989
4784094	Cylinder head with desmodromic valve operation, for internal combustion engines In a cylinder head with desmodromic valve operation for internal combustion engines, where the operation is implemented by two rockers for each valve which control its closure and opening respectively and which act on the valve stem by way of calibrated r...	11/15/1988
4763615	Desmodromic valve system The invention relates to a desmodromic system in which a valve stem is arranged to be acted upon directly, or by way of rockers, by an opening cam and a closing cam rotatable together at constant or varying angular velocity in synchronism with the rotatio...	08/16/1988
4723515	Mechanism utilizing a single rocker arm for controlling an internal combustion engine valve The operating mechanism for opening and closing the valve of an internal combustion engine includes a single generally L-shaped rocker arm having a vertical leg formed with a cam follower surface that is engaged by a cam unit mounted on the engine's camsh...	02/09/1988
4535641	Reciprocating plunger fuel injection pump A fuel injection pump of the reciprocating plunger type has a plunger having a head engaged by a tappet assembly. The tappet assembly includes a roller engageable with a cam lobe of a cam to impart inward movement to the plunger. Outward movement of the p...	08/20/1985
4364341	Valve control device for an internal combustion engine The valve control system for the continuous adjustment of the control times and strokes of the valves of an internal combustion engine has an eccentric shaft which is common to the intake and exhaust valves and is arranged in the cylinder head and which h...	12/21/1982
4036185	Energy-efficient valve gear A valve train comprises a cylinder head and poppet valve thereon, a valve-actuating rocker platen pivotally mounted on the cylinder head by means of a pivot member so that the platen may pivot between positions on either side of the member, a valve connec...	07/19/1977

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Class 123/90.25 - By valve-opening rocker