Valve operating system in an internal combustion engine

{
  "publication_number": "US2005183684A1",
  "country": "US",
  "kind": "A1",
  "title": "Valve operating system in an internal combustion engine",
  "abstract": "A valve operating system for an internal combustion engine has a rocker arm, a rocker actuation mechanism, a ball and socket joint, and a valve activation device. The rocker arm is connected to the rocker actuation mechanism. The ball and socket joint is connected to the rocker arm and to the valve activation device. The ball and socket joint has a retention device connected to a ball portion and a socket portion. The retention device holds the ball and socket portions together. The retention device is positioned in an external groove formed by the socket portion.",
  "claims": [
    "1. A valve operating system for an internal combustion engine, comprising: a rocker arm; a rocker actuation mechanism connected to the rocker arm; a ball and socket joint having a wire-like retention device connected to a ball portion and a socket portion, wherein the socket portion has a foot extension, wherein the wire-like retention device is positioned in a groove formed by the socket portion, wherein the ball portion is connected to the rocker arm; and a valve activation device connected to the socket portion.",
    "2. The valve operating mechanism of claim 1, wherein the socket portion forms a cavity, wherein the valve activation device is connected to the socket portion continuously along an outer diameter of the foot extension, and wherein the socket portion forms the exterior groove between the foot extension and an entrance to the cavity.",
    "3. The valve operating mechanism of claim 1, wherein the ball portion has a flange between a pin extension and an interface surface.",
    "4. The valve operating mechanism of claim 1, wherein the ball portion has a pin extension inserted into a hole formed by the rocker arm.",
    "5. The valve operating mechanism of claim 1, wherein the ball portion has an interface surface, wherein the socket portion forms a cavity with an interior surface, and wherein the interface surface is positioned adjacent to the interior surface in the cavity.",
    "6. A ball and socket joint for a valve operating system in an internal combustion engine, comprising: a ball portion having a flange between a pin extension and an interface surface; a socket portion having a foot extension, wherein the socket portion forms a cavity with an interior surface, where the socket portion forms a groove between the foot extension and an entrance to the cavity; and a wire-like retention device having a pin segment connected to a foot segment, wherein the pin segment forms a pin loop, wherein the foot segment forms a foot loop; wherein the interface surface is positioned adjacent to the interior surface in the cavity, wherein the pin extension is disposed in the pin loop, wherein the pin segment is adjacent to the flange, wherein the socket portion is disposed in the foot loop, and wherein the foot segment is positioned in the groove.",
    "7. The ball and socket joint of claim 6, wherein the interface surface has a smaller cross-section than the flange.",
    "8. The ball and socket joint of claim 6, wherein the pin extension has a smaller cross-section than the flange.",
    "9. The ball and socket joint of claim 6, wherein the pin loop has a smaller cross-section than the flange.",
    "10. The ball and socket joint of claim 6, wherein the socket portion has a smaller cross-section at the exterior groove than at the foot extension.",
    "11. The ball and socket joint of claim 6, wherein the socket portion has a smaller cross-section at the groove than at the entrance to the cavity.",
    "12. The ball and socket joint of claim 11, wherein the socket portion has a smaller cross-section at the groove than at foot extension.",
    "13. The ball and socket joint of claim 11, wherein the foot segment extends partially along a circumference of the groove.",
    "14. The ball and socket joint of claim 5, wherein the pin segment extends partially along a circumference of the pin extension.",
    "15. The ball and socket joint of claim 6, wherein the pin segment forms a plurality of windings around the pin extension.",
    "16. An internal combustion engine with a valve operating system, comprising: a cylinder head mounted on a crankcase, wherein the cylinder head and crankcase form a cylinder, wherein the cylinder head forms a valve path connected to the cylinder; a valve disposed within the valve path; a rocker arm mounted on the cylinder head; a rocker actuation mechanism connected to the rocker arm; a ball and socket joint having a wire-like retention device connected to a ball portion and a socket portion, wherein the socket portion has a foot extension, wherein the wire-like retention device is positioned in a groove formed by the socket portion, wherein the ball portion is connected to the rocker arm; and a valve activation device connected to the socket portion, wherein the valve activation device is connected to the valve.",
    "17. The internal combustion engine of claim 16, wherein the valve activation device is connected to the socket portion continuously along an outer diameter of the foot extension, wherein the socket portion forms a cavity, and wherein the socket portion forms the exterior groove between the foot extension and an entrance to the cavity.",
    "18. The internal combustion engine of claim 16, wherein the ball portion has a flange between a pin extension and an interface surface, wherein the socket portion forms a cavity with an interior surface, and wherein the interface surface is positioned adjacent to the interior surface in the cavity.",
    "19. The internal combustion engine of claim 18, wherein the pin extension is inserted into a hole formed by the rocker arm.",
    "20. The internal combustion engine of claim 16, wherein the valve is one of an inlet valve and an exhaust valve."
  ],
  "description_excerpt": "This invention generally relates to valve operating systems in internal combustion engines. More particularly, this invention relates to a valve operating system having a rocker arm connected to a ball and socket joint for operating a cylinder valve in an internal combustion engine.\n\nInternal combustion engines convert chemical energy from a fuel into mechanical energy. The fuel may be petroleum-based (gasoline or diesel), natural gas, another combustible material, or a combination thereof. Most internal combustion engines mix the fuel with air and then inject the air-fuel mixture into one or more cylinders formed by a crankcase, cylinder head, and piston. The internal combustion engine may use a camshaft system, a hydraulically activated electronically controlled unit injection (HEUI) system, or the like to control the injection of the air-fuel mixture into the cylinders. In each cylinder, the fuel ignites to generate rapidly expanding gases that actuate the piston. The fuel may be ignited by compression such as in a diesel engine or through some type of spark such as the spark plug in a gasoline engine. The piston usually is connected to a crankshaft or similar device for converting the reciprocating motion of the piston into rotational motion. The crankshaft also causes the piston to push the exhaust gases out of the cylinder during a return stroke, thus preparing the cylinder to receive more of the air-fuel mixture. The rotational motion from the crankshaft may be used to propel a vehicle, operate a pump or an electrical generator, or perform other work. The vehicle may be a truck, automobile, boat, or the like.",
  "cpc": [
    "F01L 1/14",
    "F01L 1/181",
    "F01L 2001/187"
  ],
  "ipc": [
    "F01L 1/14",
    "F01L 1/18"
  ],
  "inventors": [
    "James Strepek"
  ],
  "filing_date": "2004-02-25",
  "publication_date": "2005-08-25",
  "priority_date": "2004-02-25",
  "application_number": "US-78697304-A",
  "family_id": "34861887",
  "cited_by_count": 4,
  "citations": [
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    "US6047675A",
    "US6273042B1"
  ]
}