Class 123/90.26 - By cam-actuated unitary follower

Subclass of Class 123 - Internal-combustion engines
Definition: Device wherein the driving means is a follower that is joined
No. of patents: 35
Last issue date: 03/18/2008

Number	Title	Issue Date
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
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
7143995	Motorized cam actuator A motorized cam actuator for linear actuation of an apparatus. An actuating motor shaft is fitted with a bushing having first and second opposed flats and a threaded portion at an outer end thereof. With the motor mounted to a pedestal, the bushing is rotated on the...	12/05/2006
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
7051691	Desmodromic valve drive The invention relates to a valve drive, in particular for internal combustion engines of motor vehicles, comprising at least one cam element (2) that is located on a driven shaft (1) and at least one lifting valve (10), which has a valve stem (	05/30/2006
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
6948468	Desmodromic valve and adjustable cam system The present invention provides an exemplary rockerless desmodromic valve and adjustable overhead cam system adapted to be installed onto a head for an internal combustion engine which utilizes at least one valve for each intake and exhaust port. The system includes ...	09/27/2005
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
6920848	Driver or direct acting valve for internal combustion engine It is an object of the present invention to provide a drive unit for a direct-acting valve for internal combustion engines by which a quiet internal combustion engine can be obtained with noise suppressed. This system comprises an inlet valve 8 arranged slida...	07/26/2005
6904882	Valve mechanism, in particular for internal combustion engines of motor vehicles A valve lift mechanism, in particular for internal combustion engines of motor vehicles, has a driven cam element, a valve control member which can be driven (translational movement or pivot rotation) by the cam element, and a flexible enveloping element, wherein th...	06/14/2005
6796277	Valve mechanism, in particular for internal combustion engines of motor vehicles A valve lift mechanism, in particular for internal combustion engines of motor vehicles, has a driven cam element, a valve control member which can be driven (translational movement or pivot rotation) by the cam element, and a flexible enveloping element, wherein th...	09/28/2004
6755166	Electromechanical valve drive incorporating a nonlinear mechanical transformer The present invention provides a means to reduce holding current and driving current of EMVD's effectively and practically and to provide soft landing of a valve. The invention incorporates a nonlinear mechanical transformer as part of an EMVD system. The nonlinear ...	06/29/2004
6705262	Valve mechanism, in particular for internal combustion engines of motor vehicles A valve lift mechanism, in particular for internal combustion engines of motor vehicles, has a driven cam element, a valve control member which can be driven (translational movement or pivot rotation) by the cam element, and a flexible enveloping element, wherein th...	03/16/2004
6684831	Electrically rotatable shaft The invention concerns an electrically rotatable shaft, and more particularly, an adjusting shaft (1) of a fully variable mechanical valve train of an internal combustion engine, said shaft comprising an adjusting cam (2). The low-friction and lash-free c...	02/03/2004
6619250	Desmodromic valve actuation system A 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 mechanism for...	09/16/2003
6595170	Hydraulic valve-operating mechanism A mechanism for operating one or more valves of a piston device, in particular an intake or exhaust valve of an internal-combustion engine, which valve can move between an open position and a closed position and is provided with associated restoring means...	07/22/2003
6571758	Four-stroke internal combustion engine valve pause mechanism A valve pause mechanism of a four-stroke internal combustion engine includes a valve pause mechanism. A valve lifter fitted between a valve cam and a valve stem of a poppet valve is always pressed in a direction in which the valve lifter contacts the valv...	06/03/2003
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
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
6481399	Mechanical regulation of the stroke adjustment of an intake valve of an internal-combustion engine The present invention relates to a mechanically regulated valve stroke adjuster. The adjuster has a lifting lever displaying, a means by which the lifting lever is mounted in rotating fashion and in sliding fashion in a guide block, a means which interact...	11/19/2002
5954018	Mode selective internal combustion engine A cylinder of a mode selective internal combustion engine is operable in two modes, including one active mode with conventional operations of cylinder valves and another passive mode with continuously closed or open engine valves. By creating ideal combus...	09/21/1999
5931130	Desmodromic distribution system for four-stroke engines This invention concerns a desmodromic distribution system for four-stroke engines characterized by an articulated joint between the tappet and valve, achieved by means of a special joint....	08/03/1999
5653108	Gas turbine-two-stroke piston compound engine A compound engine including a gas turbine unit and a two-stroke uniflow scavenge piston unit having a hollow cylindrical exhaust valve mounted concentrically with an associated piston to form a portion of the combustion chamber within a peripheral wall of...	08/05/1997
5245957	Spring assist system for internal combustion engine valves A spring assembly for positively urging inlet and exhaust valves of a internal combustion engine into both open and closed positioned wherein the spring assembly includes an engaging member which is biased alternatively in both directions relative to the ...	09/21/1993
5058540	Engine valve driving device An engine valve driving mechanism includes a cam having a tubular wall rotatable about a horizontal axis. A cam follower contacts both the inner and outer surfaces of the tubular cam wall, so that the follower is positively driven toward and away from the...	10/22/1991
4887565	Internal combustion engine A poppet valve in an internal combustion engine is moved in both the opening and closing directions by a follower coupled with the valve and defining an internal cam-track. There extends through an aperture defined by the follower a camshaft having a cam ...	12/19/1989
4754728	Four-valve cylinder head of desmodromic operation, for internal combustion engines A four-valve cylinder head for internal combustion engines, in which the valves are operated desmodromically, each by a pair of rockers, one for closing and the other for opening the respective valve, each rocker being mounted on a separate support pin, a...	07/05/1988
4711202	Direct acting cam-valve assembly A direct acting cam-valve assembly for an internal combustion engine having an engine block means defining a port includes an internal/external cam fixed to an engine driven camshaft and a direct acting cam follower having one end thereof driven reciproca...	12/08/1987
4471729	Valve arrangement preferred for engines In typical combustion engines the inlet valves and outlet valves are subjected to lifting mechanism and to long stroke springs for closing the valves in periodic cycles. Strong and long springs are required and their life time is limited. The invention th...	09/18/1984
4061115	Valve train for internal combustion engine A system for varying valve timing; i.e. the rotational angle of the crankshaft during which an intake or an exhaust valve of a cylinder of a reciprocating internal combustion engine is open which results in varying valve overlap, and for varying valve lif...	12/06/1977
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 123/90.26 - By cam-actuated unitary follower