Gaming machine rotary disc drive appts. - has pair of rotors that disengage when speed is sufficient for centrifugal force to overcome spring and magnetic force

摘要

A pair of rotor elements (1, 2) are driven by a motor (11). The two rotor elements are coupled together by magnets (4) subjected to spring force (5) and which engage the teeth of a pinion gear (3). When the rotational speed increases to a point that the centrifugal force exceeds the sum of the magnetic and spring forces, the rotor elements separate. The angular position of the rotor can be determined by counting pulses generated (9, 10). When the speed reduces the coupling engages at a specific point. ADVANTAGE - Improved coupling for rotor elements, allowing simultaneous stopping or starting of several discs.