US Patent 7815187 Roulette board and method for controlling the same

A roulette board includes: a roulette wheel on which a plurality of symbols are arranged in a circumferential direction of the roulette wheel; a plurality of ball reception portions that are provided in a one-to-one correspondence with the symbols, the ball reception portions being configured to receive a ball that rolls on the roulette wheel; a banked passage that is endlessly provided along an outer circumference of the roulette wheel, and allows the ball to roll in a circumferential orbit; and a ball discharging mechanism that is provided with a ball discharging member and discharges the ball received in one of the ball reception portions toward the banked passage by bringing the ball discharging member into contact with the ball.