| 摘要 |
PCT No. PCT/US91/06576 Sec. 371 Date Oct. 4, 1993 Sec. 102(e) Date Oct. 4, 1993 PCT Filed Sep. 12, 1991.A stanchion is provided with a latch system which is operable from the tractor which positions the trailers such that a gate on the tractor locks and unlocks the latch to appropriately reposition the stanchion during the positioning of the trailer. The tractor also includes a hook which engages the stand to raise the stand during loading of the trailer from its lowered to its raised position to engage and secure the tractor and also to reposition the unlocked stand during unloading of the trailer.
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