The lengths of the links comply with the condition: K͞E²+C͞A²=K͞C²+E͞A². Slider 1 moves along fixed guides p. Sliders 2 and 3 move along fixed guides q. The angle between axes 0z and 0x of guides p and q is a. When slider 1 moves along guides p, point K describes a hyperbola with the equation a²x²+y²(1+2d)-2a(1+d)x y+c²-b²=0 where a=tan(α); d=(K͞E/K͞D)=(K͞C/K͞B); c=K͞E; b=A͞E.
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