Fluid suspended self-rotating body and method
A fluid, the first fluid technology, applied in advertising, toys, water toys, etc., can solve problems such as excessive internal pressure of bubbles
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[0046] Referring now to the accompanying drawings, the Figure 1a with 1b As shown in , the display device comprises a transparent housing 2 containing a ball 4 floating near the interface 6 of a lighter fluid 8 such as NOPAR 12 and a heavier fluid 10 such as propylene glycol. The ball 4 can be driven into rotation by an internal mechanism, as described below, and preferably has graphic features on its surface, such as those of the globe. The lighter fluid 8 and the heavier fluid 10 are immiscible and are preferably both transparent. The density of the ball 4 is set to be between the density of the lighter fluid 8 and the heavier fluid 10 so that without any mechanical connection to the top inner surface 12 or bottom inner surface 14 of the housing 2 the ball 4 will float.
[0047] The housing or shell 2 is shown as one integral part, but it is in fact formed of at least two parts adapted to surround the ball 4 and bonded together, preferably leaving the bond line 3 invisible...
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