| 摘要 |
A steerable head for guiding a pusher rod through ducting. The pusher rod is then used for drawing cables, wires, lines or pipes through the ducting. The steerable head includes remotely operable mechanisms for steering the rod through junctions or around obstacles in the ducting. In a further refinement, the steerable head includes a coupling mechanism adapted to co-operate with a corresponding coupling mechanism mounted on a second rod, thereby allowing the pushing of rods through longer or more obstructed ducts.
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