Importance

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Abstract

A rendering device forms a rotary pattern in a granular medium using a rotating arm having a distal end and a proximate end, where the distal end defines an outer radius and the proximate end defines an inner radius of a circular planar medium with a thin sand layer. A motor attached to the rotating arm for rotation about a center axis, and a spur gear rotationally attaches to the proximate end. An elongated rendering member pivotally attaches between the distal end and a radial location on the spur gear, where the elongated member has a varying length based on a rotation of the spur gear. A magnetic guide element is disposed on the elongated rendering member beneath the planar sand platform, and is in communication with a metal rendering element for traversing a path through a rendering medium by magnetically following the guide element underneath.

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First Claim