OPTICAL TOY 'MAGIC FIREWORKS'

摘要

Usage: toys, demonstration devices. SUMMARY OF THE INVENTION: optical toy comprises a fluid-filled (2) a sealed transparent container (1) inside of which a movably installed piston (4) of Part No. with shape memory with the through holes (5) and from one of the ends (9) taken by the heating means (10), while on either side of the piston (4) has the mechanical part (3). Z.l.f 2 BACKGROUND 3-yl.