B - Operations – Transporting – 60 – P
Patent
B - Operations, Transporting
60
P
B60P 7/04 (2006.01) B60J 7/10 (2006.01)
Patent
CA 2116787
A support for a covering over the open top of a trailer box or other container which can be displaced from the opening when the covering is removed. The support has a series of parallel bows pivotally attached at one end to one side of the opening and configured at the other end to reversibly engage the other side of the opening. A perpendicular ridgepole is pivotally connected to the bows and assures that all the bows move in unison or are uniformly prohibited from movement. A lock on one bow is simultaneously released when a rope is pulled to pivot the bows from the support position to the retracted position. A method is disclosed of pivoting the bows at least partially out of the top opening of the box or container.
Sim & Mcburney
Wahpeton Canvas Co.
LandOfFree
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