Abstract: A drain assembly for a tank or containment vessel of the type having a flexible and removable interior liner. The drain assembly comprises a drain intake in fluid communication with a wall traversing portion. The drain intake is operatively deployable in proximity to the bottom of the tank and the wall traversing portion is operatively deployable through a wall of the tank. The wall traversing portion includes a conduit portion in fluid communication with the drain intake and with a location exterior to the tank. The conduit portion includes an interior stopper plate and a threaded portion.

Abstract: A quick assembly hinge for joining first and second panels. The hinge comprises a first wing portion securable to the first panel, a second wing portion securable to the second panel, a pin mounted to the first wing portion and a hook mounted to the second wing portion. The pin is generally parallel to the first panel when the first wing portion is secured thereto. When the second wing portion is secured to the second panel, the opening of the hook bowl is directed downwardly toward the bottom surface of the second panel. With the panels generally co-planar and their respective edges adjacent to one another the hook is receivable over at least a portion of the pin. As the first panel is rotated upwardly to form a generally a right angle with the second panel the pin is rotatable within the hook bowl preventing the lateral and vertical displacement of the panels.

Abstract: A tank is formed from panels fastened together edge to edge to form four upstanding side walls and base panels where across the base the panels extend from one side to the other. The panels are composite and formed from a honeycomb core panel with a foam material filling the tubular cells and a fibrous reinforcing cover sheets. The walls are supported by a metal frame including a base member extending along the wall at the bottom of the panels and a plurality of joining members connected to the base member and upstanding therefrom for holding the ends of the panels in end to end relationship. Cables extend along the walls adjacent the base member and connect to end posts of the walls. A series of posts stand along the walls on the outside and are connected across the tank by cables extending over the top edge of the walls.

Abstract: A quick assembly hinge for joining first and second panels. The hinge comprises a first wing portion securable to the first panel, a second wing portion securable to the second panel, a pin mounted to the first wing portion and a hook mounted to the second wing portion. The pin is generally parallel to the first panel when the first wing portion is secured thereto. When the second wing portion is secured to the second panel, the opening of the hook bowl is directed downwardly toward the bottom surface of the second panel. With the panels generally co-planar and their respective edges adjacent to one another the hook is receivable over at least a portion of the pin. As the first panel is rotated upwardly to form a generally a right angle with the second panel the pin is rotatable within the hook bowl preventing the lateral and vertical displacement of the panels.

Abstract: A composite construction panel comprises a core having an upper surface and a lower surface, a rigid upper cover sheet positioned above the upper surface, a rigid lower cover sheet positioned below the lower surface, and at least one conduit extending through the core having first and second ends terminating at one or more side edges of the core. The core is formed from an insulating material and includes rigid supporting members extending between and generally perpendicular to the upper surface and the lower surface. The upper and lower cover sheets are bonded to the supporting members to form a rigid composite panel. At least a portion of the core is removed adjacent at least a portion of the length of the conduit such that the lower and side portions of the conduit are adjacent to, and insulated by, the insulating material, but the upper portion is not insulated.

Abstract: A rig mat is formed by rectangular panels fastened end to end by cooperating connectors. In one arrangement the first connector is C-shaped shaped to form a slot and the second T-shaped shaped with a flange of the T wider than the mouth inserted through the mouth. In a second arrangement two L shaped connectors are interengaged with an additional flat plate which defines a slot with an end of one of the L-shaped connectors. The panels are composite and formed from a honeycomb core panel with a foam material filling the tubular cells and a fibrous reinforcing cover sheets extending over the top and bottom of the panel. The cover sheets are filled with a set resin material which extends into the porous fibrous material of the walls of the core panel so as to form an integral structure of the resin extending between the walls and the sheets.