Boules contg. separate chemiluminescent reagents - having fragile glass reservoir in translucent flexible plastic casing

摘要

Luminous balls for playing 'boule' comprise a translucent flexible plastic casing contg. a fragile internal reservoir for keeping one of two chemiluminescent reagents away from the other within the main body of the ball until required to shine. To allow the game to be finished in dusky conditions. The shape of the ball is maintained by internal pressure due to byproducts of the chemiluminescent reaction and/or reduction of the volume of the casing when the rims of the split shells forming the casing are welded together. Pref. the casing has an internal annular rib to locate the base of the fragile container: the ends of the internal container, or its supports, have a stiffening effect on opposite poles of the main casing, which is balance in the correspondingly equatorial zones by progressive or local thickening of the outer casing walls. For ease of loading, pref. one of the chemiluminescent reagents is a liquid and the other a paste. Typically the outer casing components are of low density polyethylene and the fragile reservoir of thin glass.