| 摘要 |
An apparatus for conveying a carriage (212) around a fixed path, which apparatus comprises a fixed track, a carriage moveably engaged with the fixed track, a first conveyor (270) releasably engageable with the carriage (212) and operable to drive the carriage (212) around a first portion of the fixed track, a transfer means (282) operable to engage with the carriage (212) and to convey the carriage (212), once it has disengaged from the first conveyor (270), around a second portion of the fixed track and into a position in which it is engageable with a second conveyor, (276) which second conveyor is operable to drive the carriage (212) around a third portion of the fixed track. The conveyors and/or transfer means can be endless elements, screws or wheels. |
