| 摘要 |
A conduit system comprises a plurality of elongate channels, each having three walls, one open side, and two open ends; a plurality of coupling devices, each adapted to be disposed between a pair of adjacent channels to couple their adjoining ends together to form a conduit with two open ends; a plurality of first covers, each adapted to be disposed over the open side of one or more channels and to be removably attached thereto by a locking device disposed within the respective channel and adapted to be operated only from within the channel; and at least one second cover adapted to be disposed over the open side of one or more channels and to be removably attached thereto by a locking device disposed within the respective channel and adapted to be remotely operated by an elongated member extending through one of the open ends of the conduit.
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