Bowling device, has detection system emitting horizontal light beam and cut by cylindrical case, when skittles are stroked by ball, and skittles provided in vertical position with respect to track, when skittles are not stroked by ball

摘要

The device has skittles (7) with a ball (11) and suspended by a rod (8) connected to a ball joint that is positioned on a lever rotating at an end of a rotating arm (5). An electrical detection system emitting a horizontal light beam (13) is cut by a cylindrical case, when the skittles are stroked by the ball. The skittles are provided in a vertical position with respect to a track (2), when the skittles are not stroked by the ball.