The lengths of the links comply with the conditions:0͞A=A͞C=I and A͞D=D͞K=K͞B=B͞A=a. Crank 1 turns about fixed axis 0. Slider 2 moves along fixed guides p. When crank 1 rotates about axis 0, point K describes an ellipse with the equation (x²/l²)+(y²/(l+2a)²)=1.
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