| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotary balance as improvement of a conventional technique using a power source appearing in two types, one based on a fuel which involves demerits in terms of consumption of the fuel resources and environmental pollution with the exhaust emission and the other based on the electricity which requires electricity distribution or cells/batteries, can solve the problems inherent therein such that both types require the supply of fuel/electricity at all times and the type using a natural energy depends upon the environmental or meteorological conditions to lead to difficulty in supplying a stable power source. Ž<P>SOLUTION: The rotary balance works with a natural fall of a weight or a buoyancy of a float as the energy source which is stable anywhere, whereby it is possible to eliminate consumption of the resources and environmental pollution and to yield a stable output. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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