| 摘要 |
<p>The automatic pin setting device for bowling alleys, etc., has a chain or rope drive system. Each pin is associated with a single rope or chain which passes over rollers, to a rope or chain drum connected by a coupling to a drive system, and also to a pin fall indicator. The coupling between the drive system and the rope or chain drum is contactless. It may be a vibratory flow or magnetic hysteris coupling or a combination of these.</p> |
