| 摘要 |
A cylinder head cover for a reciprocating compressor cylinder such as an air compressor or internal combustion engine is disclosed. The cover includes a first plate having a first and second channel in a surface of the first plate, wherein the first and second channels merge together within the plate at a first opening through the bottom surface of the first plate. A second plate is fastened over the first plate. The second plate has a pair of bores therethrough each aligned with one of the first and second channels in the first plate. A fourth plate is fastened over the second plate forming a cavity between the second and fourth plates. The fourth plate has a pair of spaced bores therethrough aligned with the bores through the second plate. A rotating third plate is rotatably disposed between the second and fourth plates. This third plate has a pair of spaced bores therethrough for sequentially aligning with one of the pair of bores through the second plate. During a full rotation of the third plate each bore through the third plate aligns with each bore through the second and fourth plates.
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