B - Operations – Transporting – 62 – D
Patent
B - Operations, Transporting
62
D
296/14
B62D 53/00 (2006.01) B60J 5/04 (2006.01)
Patent
CA 1235722
ABSTRACT A trailer having at least one gull wing door as well as conventional rear swing doors permits unhindered access to the interior of the trailer along the full length of the trailer at one time. Each gull wing door is pivoted longi- tudinally at the approximate center of the roof and includes a roof portion which extends outwardly from the pivot axis and an integral sidewall portion which extends downwardly to the bed of the trailer. Latch assemblies are incorporated to secure the doors to the trailer bed. A pair of hydraulic cylinders are pivotally secured between the roof portion of each door and fixed trailer frame elements and are oriented substantially horizontally when the door is in its closed position. Torsion bar spring assemblies disposed colinearly with the axis of pivot provide force which initially opens the door, offsetting the hydraulic cylinders from their substantially horizontal positions such that they are capable of providing sufficient force to raise the doors. Typically, only the curb side of the trailer will include such gull wing doors but it should be readily apparent that both sides of the trailer may include such doors and that plural doors on one side may be utilized, if desired.
466059
G. Ronald Bell & Associates
Wabash National Corporation
LandOfFree
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