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Document Number
US Patent 4368887
Issued Date
January 18, 1983
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Inventors
Gamble; John (Etobicoke, Ontario M9C 3S7,CA)
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Abstract
A selector device is provided herein for the random selection of a small set of balls from a larger set of balls. It includes a flat box having a transparent cover. The box is divided into an upper chamber and a lower chamber, the upper chamber containing a large set of balls therein, with a small set of the balls having a significantly different appearance from the first set of balls, e.g., by being colored differently. The lower chamber is formed by parallel channels through apertures. The channels are just slightly wider than the diameter of the balls. All connections between the upper chamber and the channels are provided with rounded corners. In this way, each channel has an unimpeded entry mouth from the upper chamber. Finally, spaced-apart, indicia are arranged in longitudinal rows each along a respective channel. In this way, a chance selector device is provided in which the balls have an unhindered access by gravity to the channels, which permits truly random selection.
Drawing
Random selector - US Patent 4368887 Drawing
Drawing from US Patent 4368887
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Number of Claims:
22
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Owner
Published
January 18, 1983
Application Number
06/244,667
Filed
March 17, 1981
US Classification
273/144B  
Int'l Classification
G07C   15/00   (20060101)  
Assistant Examiner
Priority Data
Nov 07, 1980 [CA] 364306
USPTO Field of Search
273/144R   273/144A   273/144B   273/145B   273/145C  
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