Quotables
"There is practically no chance communications space satellites will be used to provide better telephone, telegraph, television, or radio service inside the United States."
T. Craven, FCC Commissioner ; 1961
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8056520 | Valve drive of an internal combustion engine A valve drive of an internal combustion engine, which has a reciprocating poppet valve and a spring element which impinges the closed reciprocating poppet valve with force against the action of a valve seat. The force characteristics are substantially independent of... | 11/15/2011 |
| 7870842 | Engine with desmodromically actuated rocker An engine comprising a valve, cam lobe, rocker, follower member and an optional spring is disclosed herein. The valve may comprise a valve stem. The cam lobe may have a base circle and a nose. The cam lobe may be attached to a rotating shaft. The rocker may have a v... | 01/18/2011 |
| 7717075 | Cam mechanism having forced-valve-opening/closing cams and cam-profile setting method No-load valve lift correction curves of opening and closing cams are set by offsetting no-load curve sections of basic valve lift curves of the cams in such directions as to increase a clearance between the curves, and they are connected with remaining sections of t... | 05/18/2010 |
| 7481192 | Valve gear and method for opening and closing a passage A valve gear includes a housing provided with a passage, a valve member arranged within the housing, which is movable between a first, closed position, in which the passage is closed, and a second, open position, a piston connected to the valve member, which can osc... | 01/27/2009 |
| 7421988 | Positive-guidance apparatus for conversion of a rotary movement of a drive to a reciprocating movement of a part A positive-guidance apparatus for conversion of a rotary movement of a driven cam element to a reciprocating movement of a part. The apparatus has a first cam area which pushes the part away in a first direction. A second cam area, which is formed on another cam pul... | 09/09/2008 |
| RE40439 | Method to control electromechanical valves A system for controlling electromechanical of an internal combustion has a valve-closing electromagnet for attracting the armature coupled to the valve to close the valve, a valve-opening electromagnet for attracting the armature to open the valve, a valve-opening s... | 07/22/2008 |
| 7387095 | Hydraulic valve actuation systems and methods to provide variable lift for one or more engine air valves Hydraulic valve actuation systems and methods to provide variable lift for one or more engine air valves by way of a variable position hard stop. Various embodiments are disclosed, including embodiments controlling lift by providing a choice of two different fixed s... | 06/17/2008 |
| 7360517 | Valve actuator for actuating a gas exchange valve of an internal combustion engine A valve actuator for operating a gas exchange valve of an internal combustion engine has a sleeve-shaped positioning piston which is connected to a valve stem, has at least two shell-shaped wedge pieces enclosing a stem end of the valve stem, whose radially outer pe... | 04/22/2008 |
| 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 |
| 7331315 | Two-stroke engine with fuel injection A two-stroke internal combustion engine is provided with a fuel injector. The two-stroke internal combustion engine may have at least one transfer passage, an air channel, and a fuel injector. The transfer passage is between a crankcase and a combustion chamber of t... | 02/19/2008 |
| 7299776 | Valve assembly for an internal combustion engine A valve assembly for an internal combustion engine includes: at least two valves supported by a pair of valve stem holders; a bracket; a closing actuator for pivoting and closing the valves upon contact with a closing lobe of a camshaft; one or more opening actuator... | 11/27/2007 |
| 7249579 | Enhanced permanent magnet electromagnetic actuator for an electronic valve actuation system of an engine A valve actuator for an internal combustion engine is described having a core having a wound coil located therein, said core further having at least one permanent magnet located at least partially inside or outside said coil and positioned at an angle relative to a ... | 07/31/2007 |
| 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 |
| 7204210 | Reducing power consumption and noise of electrically actuated valves A system and method for controlling electromechanical valves operating in an engine is presented. According to the method, armature levitation is strategically used during a cycle of a cylinder. The method can reduce fuel consumption and power supply requirements, a... | 04/17/2007 |
| 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 |
| 7185615 | Variable stroke engine A variable stroke engine includes a connecting rod having one end thereof connected to a piston via a piston pin. A sub-rod is connected to a crankshaft via a crankpin and to the other end of the connecting rod. A control rod has one end thereof connected to the sub... | 03/06/2007 |
| 7182051 | Electromechanical valve actuator for internal combustion engines and internal combustion engine equipped with such an actuator An electromechanical valve actuator for internal combustion engines, equipped with a polarized electromagnet and with a magnetic plate switches between a first position close to the electromagnet and a second position remote from the electromagnet, the switching tim... | 02/27/2007 |
| 7165518 | Adjusting valve lash for an engine with electrically actuated valves A system and method for controlling electromechanical valves operating in an engine is presented. According to the method, armature levitation position may be changed to accommodate varying rates of valve stem growth. The method may reduce valve noise during a wide ... | 01/23/2007 |
| 7152558 | Electromechanical valve actuator assembly A lever electromechanical valve actuator assembly and arrangement of electromechanical valve actuators that creates a compact actuator assembly to increase ease of serviceability, provide space for engine components and eliminate interference between the actuators a... | 12/26/2006 |
| 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 |
| 7134410 | Detachable connection for coupling a gas exchange valve of an internal combustion engine to an actuator Disclosed is a simple, easy-to-produce, and reliable connection between a shaft of a gas exchange valve and an actuator. This connection is detachable and, as a result, can be connected and disconnected multiple times. It is also possible to dispose the coupling pie... | 11/14/2006 |
| 7134411 | Valve operating mechanism A valve operating mechanism is described for an internal combustion engine in which at least one valve (14) of an engine cylinder is operated by two cams (10,12). The cams (10,12) have respective cam followers (38,36) which are resilientl... | 11/14/2006 |
| 7124720 | Permanent magnet electromagnetic actuator for an electronic valve actuation system of an engine A valve actuator for an internal combustion engine is described having a core having a wound coil located therein, said core further having at least one permanent magnet located at least partially inside said coil and positioned at an angle relative to a direction o... | 10/24/2006 |
| 7111594 | Method of operating internal combustion engine including electromagnetically driven intake valves A method of operating an internal combustion engine having an; electromagnetically driven intake valves for a vehicle. With the method, deviation of an opening operation of the electromagnetically driven intake valve in response to a command signal for opening the i... | 09/26/2006 |
| 7096838 | Reversible four cycle internal combustion engine A reversible four cycle internal combustion engine. A crankshaft is rotatably mounted in a block and a piston is operatively mounted to a crankshaft via a connecting rod. A follower wheel traverses a cam as the cam rotates with the crankshaft, and in doing so, cause... | 08/29/2006 |
| 7089894 | Electromechanical valve actuator assembly A lever electromechanical valve actuator assembly and arrangement of electromechanical valve actuators that creates a compact actuator assembly to increase ease of serviceability, provide space for engine components and eliminate interference between the actuators a... | 08/15/2006 |
| 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 |
| 7000581 | Mono-shaft four-stroke engine A 4-stroke engine incorporating a mono-shaft multi-valve operating system, the multi-valve operating system incorporating a first cam follower assembly that is associated with an intake valve, a second cam follower assembly that is associated with an exhaust valve, ... | 02/21/2006 |
| 6994060 | Control apparatus and method for variable valve A control apparatus controls an electromagnetically driven valve, which includes at least one of an electromagnetically driven exhaust valve for opening or closing an exhaust valve and an electromagnetically driven intake valve for opening or closing an intake valve... | 02/07/2006 |
| 6978745 | System for controlling electromechanical valves in an engine A system for electronically actuating valves in an engine. The system includes first and second voltage sources, and a plurality of valve actuator subsystems coupled therebetween. Each valve actuator subsystem has a valve actuator and a switch configured to selectiv... | 12/27/2005 |
| 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 |
| 6971346 | System for controlling electromechanical valves in an engine A system for electronically actuating valves in an engine. The system includes a first voltage source, a second voltage source, and plural valve actuator subsystems coupled between the first voltage source and the second voltage source. Each valve actuator subsystem... | 12/06/2005 |
| 6971355 | Variable lift and duration device for poppet valves A device having a first and second rocker arm, and a control linkage. The first rocker arm has a first end receiving a first roller and a second end riding on a camshaft lobe. A second roller travels along an upper surface of the first rocker arm. The upper surface ... | 12/06/2005 |
| 6953012 | Forced opening and closing type valve operating system A forced opening and closing valve operating system for changing the operating characteristics of an engine valve according to low speed running conditions and high speed running conditions of the engine, includes a low-speed free rocker arm that swings by following... | 10/11/2005 |
| 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 |
| 6948461 | Electromagnetic valve actuation A system and method for controlling an internal combustion engine provide valve actuation that selectively couples an energy storage device to a launching coil to recover energy stored in the magnetic field and valve spring of the launching coil, decouples the energ... | 09/27/2005 |
| 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 |
