| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 123635000 | Specific coil location | 7 |
| 20080276918 | INTEGRATED IGNITION COIL AND OIL SEAL FOR HEAD AND CAM COVER - An ignition apparatus includes an oil seal integrated with a spark plug boot and configured to mate with a cylinder head so as to seal the oil that is found under the cam cover from the spark plug and high voltage terminal of the plug. The cylinder head includes a ring-cavity recessed in the head surrounding the spark plug. The spark plug boot includes an annular sealing rib on a lowermost axial end. The sealing rib is configured in size and shape to effect an interference fit in the ring cavity. The ignition apparatus includes another seal integrated at the top to seal to the cam cover. The two integrated seals eliminate the need for a spark plug tube. | 11-13-2008 |
| 20100116258 | IGNITION COIL DEVICE - An ignition coil device mounted on the cylinder head of an internal combustion engine. The ignition coil includes: a cylindrical pipe inserted into a plug hole while a first clearance is formed between the cylindrical pipe and the plug hole; a coil tower arranged over the cylindrical pipe; a seal member arranged below the coil tower for sealing the plug hole; and a cover arranged between the seal member and the coil tower. The seal member is formed with an air bleeding hole extending from the first clearance to a side of the coil tower. The air bleeding hole includes a protruding opening. A circumferential wall portion is positioned on the outer circumference side of the protruding opening while a second clearance is formed between the cover and a periphery of the protruding opening. | 05-13-2010 |
| 20100132679 | Power unit for portable chain saw - A power unit for portable chain saws wherein an ignition coil is placed at a position so as to increase both the compactness and the cooling efficiency of the power unit. | 06-03-2010 |
| 20100154760 | Hinged Removeable Coil Mount - An ignition coil assembly mounted on a valve cover whereby the plurality of coils connected to the ignition coil assembly are individually removable. The ignition coil assembly comprises a base plate and coil bracket that rotateably couple, preferably with a hinging element, allowing for access and removal of individual coils as from the engine or valve cover. The coil bracket is also able to be removed from the base member. A preferred embodiment involves locking the assembly in place with fasteners. A method for manufacture of the ignition coil assembly with the steps of rotateably coupling the base plate and coil bracket. A method for replacing ignition coils from an engine comprising separating the coil bracket from the base plate, removing and replacing individual ignition coils, and locking the coil bracket to the base plate. | 06-24-2010 |
| 20100242932 | SPARK-IGNITION ENGINE - A spark-ignition engine comprises a plug hole ( | 09-30-2010 |
| 20110297133 | IGNITION COIL FOR INTERNAL COMBUSTION ENGINE - An ignition coil for the internal combustion engine has a cylinder portion and a head portion. A pillar portion that forms a part of a ventilation passage that communicates inside and outside of a plug hole via a sealing member, and a cover portion that covers the pillar portion without blockading an upper opening of a ventilation opening of the pillar portion are formed on a side of the head portion. | 12-08-2011 |
| 20120204847 | CAM COVER COIL ON PLUG RETENTION VIA OIL SEPARATOR - A system for a cylinder head is provided. The system comprises a cam cover mounted on the cylinder head and including an oil separator and a coil on plug (COP) coupled to the oil separator via a snap-fit connection. The snap-fit connection holds the coil-on-plug in position and may provide a lower cost alternative to existing systems of retaining coil-on-plugs on a cam cover. | 08-16-2012 |
