Patent ID: 7686667

Claim:
An educational mechanical device comprising; two symmetrically constructed enclosed chambers, one designated as a lower chamber and the other as an upper chamber; a hollow member extending into and connecting said chambers to one another; a rotational shaft supporting said hollow member and chambers that defines an axis of rotation between said chambers; a vaporizing medium contained within said enclosed chambers and hollow connecting member; a fixed object within each said chamber, substantially positioned on a predetermined side of a vertical plane running lengthwise through said rotational shaft and chambers, to displace the vaporizing medium contained within said chambers; support arms connected to said rotational shaft on either side of said hollow member and chambers at bearing points to permit 360-degree rotation; a base secured to said support arms below said bearing points; a heat source about said base to excite said vaporizing medium within said lower chamber to create an increase in vapor pressure within said lower chamber relative to said upper chamber that exerts force upon the vaporizing medium within the lower chamber to communicate the vaporizing medium through said hollow member into the upper chamber; when a substantial amount of the vaporizing medium collects in the upper chamber said object contained within the upper chamber becomes engulfed by the vaporizing medium and displaces the vaporizing medium creating a weight imbalance within the upper chamber on the side of the vertical plane that does not substantially contain said object; said weight imbalance within the upper chamber allows gravity to act upon the upper chamber pulling the upper chamber downward around the axis of rotation creating rotation in the direction of the weight imbalance.