Abstract: A novel tube material, and method of forming the tube, are described. The tube has an inner liner, preferably flexible, an intermediate layer of in situ molded expanding foam material, and a flexible outer liner. The tube is rigid, with the structural strength derived entirely from the intermediate layer. The preferred method of construction uses an inner core which is used to hold the inner liner in place during forming. The inner core includes a mechanism to reduce its diameter, to facilitate removal after curing of the foam.

Abstract: A support structure is adapted to support vehicle-mounted equipment in an elevated stored state above ground and further adapted to mount onto a bed of a vehicle to assist in loading and off-loading of equipment. The vehicle comprises a support frame, first and second rigid leg structures mounted to the support frame, and a pair of stop elements. The first rigid leg structure includes a first pair of legs each pivotally mounted to the support frame on a respective pivot axis so that each leg includes a ground engaging portion located on one side of the axis and a second portion located on another side of the axis. Each of the legs is pivotable between a support position wherein the first portion engages the ground and stowed position wherein the leg is oriented proximate to the support frame with the second portion extending into a region between the support frame and a respective pivot axis.