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FOUR-BAR LINKAGE CURVE

A four-bar linkage curve is the locus of a point M of an articulated quadrilateral (APMQB), A and B being fixed, P and Q having given motions. The four "bars" are [AP] and [BQ] (the cranks), and [PM] and [QM] (the connecting rods).
With Above, the cranks have a uniform circular motion, with The middle of [ |

See also the three-bar linkage curve.

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© Robert FERRÉOL
2017