Patent ID: 6012959
Filing Date: 2000-01-11
Classification: A63H

Abstract:
A thermal-powered rocking device comprising:an assembly including a first chamber, a second chamber, and an open conduit connecting said first chamber to said second chamber;a support for supporting said assembly with one chamber disposed vertically above the other, said support including a pivotal mount for pivotally mounting said assembly so that upon pivoting the vertical positions of the chambers are reversed;said first and second chambers including gas, and the lower of said chambers being partially filled with a liquid whereby upon selectively heating the lower of said chambers, the gas therein will expand and force said liquid through the conduit into the upper chamber causing said chambers to pivot to reversed vertical positions; andsaid first and second chambers each including an absorbing material for absorbing radiation and thereby heating the gas in said chamber; andmeans for selectively reducing the radiation absorbed by the absorbing material in the chamber in the upper position, whereby radiation will heat the chamber in the upper position less than the chamber in the lower position, causing said first and second chambers to repeatedly change vertical position.