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US 4,534,322 AGranted
Arrangement for insertion of spark plugs in cylinder head
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsMinoru Matsuda, Toshiro Mitsuishi
Life of this patent
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Abstract
Arrangement for inserting a spark plug in a V-type engine cylinder head, comprising a separate sleeve surrounding the spark plug and removably insertable in the wall of the combustion chamber by screw threading. The spark plug extends through the cam chain chamber and can be removed without interference with the operation of the endless cam chain.
Claims4
Arrangement for inserting a spark plug in an engine cylinder head comprising a combustion chamber having a wall, a cam chain chamber having a wall and an endless cam chain within said chamber, said arrangement comprising
- (a) a first opening in said wall of said cam chain chamber for inserting said spark plug with its outer end extending through said cam chain chamber;
- (b) screw threaded second opening having a smaller diameter than said first opening, in said wall of said combustion chamber;
- (c) a separate sleeve surrounding said spark plug inserted through said first opening, said sleeve being screw threaded at its inner end encircled by said cam chain;
- (d) means for screwing and unscrewing said sleeve into engagement with said second opening;
- and
- (e) means for sealing the ends of said sleeve against leakage of oil.
3 more elements
Dependencies are inferred from the claim text.