| 摘要 |
A link and pivot mechanism is provided in which a pair of equal length links are connected pivotally at centers. The movement of these two links is scissor-like and is precisely controlled by the complete mechanism to produce four cycles per revolution. In one embodiment, said links osscilate about an imaginary fixed diagonal line while an interconnected crankshaft rotates. In another embodiment, said crankshaft is fixed and the mechanical approximation of said diagonal line rotates even as said scissor links osscilate about said diagonal line. Either embodiment provides a precisely controlled relationship between the crank angle (the angle between the crankshaft throw and said diagonal line) and the two angles between said scissor links. This relationship provides for a four cycle single revolution displacement mechanism, with four displacement regions, in which all movement is that of pivoting links.
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