Importance

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Abstract

The ball trough is of a unitary construction such that it is mounted directly to the underside of the playfield as a single piece. The ball trough consists of a generally U-shaped channel that is mounted to the underside of the playfield and extends between the drain hole and the shooter lane. The bottom surface of the channel is inclined relative to the horizontal such that a ball entering at the drain hole will roll under the force of gravity toward the shooter lane. When activated, the solenoid plunger will kick the ball located adjacent the shooter lane up through an aperture in the playfield and into the shooter lane. A series of optical switches are mounted on the channel and arranged such that each switch will detect the presence or absence of the ball in the queue.

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First Claim