| 摘要 |
A random number generator for generating lottery numbers includes a bottle that contains a large number of balls. Each ball has a different number imprinted on it. The balls are loosely packed within the bottle so that shaking or inverting the bottle scrambles the balls. In all embodiments, a cylindrical, ball-receiving neck extension member receives one or more numbered balls when the bottle is inverted. In a first embodiment, a flexible and resilient boot conforms to the shape of the bottle and the neck of the bottle throughout all positions of the boot. The uppermost end of the boot remains in a cylindrical, ball-receiving configuration at all times. In a second embodiment, multiple cylindrical ball-receiving parts of differing lengths are separately attached to the open bottle neck, and in a third embodiment, a rigid boot includes a lower part that slidably engages the lower part of the bottle and an upper part that slidably engages the neck of the bottle. The ball-retaining capacity of the upper part of the boot depends upon the position of the lower part of the boot.
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