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Class Information
Number: 123/90.6
Name: Internal-combustion engines > Poppet valve operating mechanism > Cam
Description: Device comprising a noncircular or eccentrically disposed surface formed on a rotating element, which constitutes the initial actuating means of the operating mechanism.










Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
7472671 Valve engine Jan. 6, 2009
7431002 Camshaft with contrarotating cams for automotive engines in particular Oct. 7, 2008
7424877 Internal combustion engine Sep. 16, 2008
7421988 Positive-guidance apparatus for conversion of a rotary movement of a drive to a reciprocating movement of a part Sep. 9, 2008
7415951 Valve timing mechanism of an internal combustion engine Aug. 26, 2008
7404383 Valve train with cam switching for the gas exchange valves of a four-cycle internal combustion engine Jul. 29, 2008
7392775 Helical cam device and method Jul. 1, 2008
7363890 Method and device for operating an internal combustion engine Apr. 29, 2008
7357108 Valve-operating mechanism Apr. 15, 2008
7341032 Dynamic camshaft apparatus Mar. 11, 2008
7334550 Valve train and cam lobe Feb. 26, 2008
7331319 Cam hub mounting assembly Feb. 19, 2008
7322330 Method for linking element to hollow shafts, preferably for producing camshafts, and resulting camshaft Jan. 29, 2008
7314027 Variable valve unit for internal combustion engine Jan. 1, 2008
7314031 Camshaft arrangements for engines Jan. 1, 2008
7308869 Radial compression-ignition engine Dec. 18, 2007
7305953 Built multiple cam Dec. 11, 2007
7290515 Camshaft and method for producing a camshaft Nov. 6, 2007
7284521 Shaft mechanism, in particular camshaft of automotive engines Oct. 23, 2007
7270097 Camshaft drive system and engine assembly Sep. 18, 2007
7249581 System with camshaft and camshaft receptacle Jul. 31, 2007
7246588 Assembled camshaft for engine and production method thereof Jul. 24, 2007
7234426 Variable valve apparatus of internal combustion engine Jun. 26, 2007
7234428 Cam shaft assembly for an engine Jun. 26, 2007
7228831 Camshaft and oil-controlled camshaft phaser for automotive engine Jun. 12, 2007
7222596 Valve drive for charge-cycling valves of internal combustion engines May. 29, 2007
7210440 Camshaft assembly May. 1, 2007
7204214 Multi-cylinder internal combustion engine Apr. 17, 2007
7146956 Valve train for internal combustion engine Dec. 12, 2006
7111598 Pivoting actuator system for controlling the stroke of a gas exchange valve in the cylinder head of an internal combustion engine Sep. 26, 2006
7096838 Reversible four cycle internal combustion engine Aug. 29, 2006
7082912 System and method for controlling engine valve lift and valve opening percentage Aug. 1, 2006
7077088 Desmodromic valve retrofit system with replaceable cam lobes for adjusting duration and hydraulic lifters for reliability Jul. 18, 2006
7069892 Camshaft for automotive engines in particular Jul. 4, 2006
7066124 Engine for scooter Jun. 27, 2006
7055480 Valve gear of internal combustion engine Jun. 6, 2006
7051691 Desmodromic valve drive May. 30, 2006
7040267 Fully variable mechanical valve gear for a piston-type internal combustion engine May. 9, 2006
7036473 Adjustable cam shaft May. 2, 2006
7032555 Motorcycle engine cam cover Apr. 25, 2006
7032554 Thrust cam cap for engine camshaft Apr. 25, 2006
7025024 Zero belt camshaft Apr. 11, 2006
7020962 Method for producing a cam for a camshaft Apr. 4, 2006
7011056 Variable timing device for reciprocating engines, engines comprising same and distribution and turbocharging method Mar. 14, 2006
7007652 Variable duration valve timing camshaft Mar. 7, 2006
7007644 System and method for preventing piston-valve collision on a non-freewheeling internal combustion engine Mar. 7, 2006
7004126 Camshaft structure Feb. 28, 2006
7000581 Mono-shaft four-stroke engine Feb. 21, 2006
6994063 Variable valve unit for internal combustion engine Feb. 7, 2006
6978749 Means to add torsional energy to a camshaft Dec. 27, 2005

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