Air driven random ball type lot mixer

Details Air driven random ball type lot mixer Air driven random ball type lot mixer

1990-08-03

1992-06-16

Coven, Edward M.

Amusement devices: games

Chance devices

Lot mixers and dispensers

273144A, A63F 306

Patent

active

051219204

ABSTRACT:
A random number generator comprising a housing with a mixing chamber, an air chamber, and an air distribution plate disposed between the mixing chamber and the air chamber. A plurality of numbered balls are disposed within the mixing chamber. An upflow air means for providing an upflow air stream is disposed within the air chamber and is capable of mixing and propelling the balls upward within the mixing chamber. A plurality of ball collection columns are attached to the housing, preferably near the top of the housing. Each ball collection column comprises a vacuum-creating means for withdrawing at least one of the balls from the mixing chamber into the ball collection column and a retaining means for retaining the ball within the ball collection column; whereby a combination of numbered balls may be collected within the ball collection columns so as to provide a random list of numbers.

REFERENCES:
patent: 2315323 (1943-03-01), Fostos
patent: 2385980 (1945-10-01), Fostos
patent: 3044780 (1962-07-01), Silverman
patent: 3468542 (1969-09-01), Ernst
patent: 4583736 (1986-04-01), Lorraine
patent: 4601471 (1986-07-01), Frank
patent: 4786056 (1988-11-01), Dunnigan
patent: 4895370 (1990-01-01), Kline
patent: 4961578 (1990-10-01), Chateau
"Maryland State Lottery Video Tape" shows machine made by Gyron Plastics of Baltimore as of 1972.

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