Abstract: A motorized transfer tank includes an electric motor and related control equipment to enable the transfer tank to propel itself into and out of the dump body of a transfer dump truck without the use of cranes or winches. The motorized transfer tank enables a transfer dump truck equipped for transporting solid payloads to carry liquid payloads safely and economically by loading and unloading the motorized transfer tank from the truck's dump body and/or a transfer trailer by operation of the electric motor and a battery included with the motorized transfer tank. When not being used to transport liquid payloads, the motorized transfer tank may be unloaded from the transfer dump truck and/or the transfer trailer onto a stationary tank stand, allowing the transfer trailer and dump truck to be used for transporting other payloads.

Abstract: A remotely activated tank hatch system includes an upper frame and a lower frame joined by a hinge assembly. The lower frame is coupled to a collar of an opening of a tank and a hatch is coupled to the upper frame. The hinge assembly allows the upper frame to pivot the hatch between open and closed positions. The lower frame includes at least one catch to receive an edge of the hatch, when the hatch is closed. Spring members on the upper frame urge the hatch toward the upper frame so that the hatch may be swung away from the opening. Inflating a bladder positioned between the upper frame and hatch overcomes the spring pressure and urges the hatch into tight contact with the collar. The hatch system includes a remote control for inflating the bladder and for opening and closing the hatch.

Abstract: A remotely activated tank hatch system includes an upper frame and a lower frame joined by a hinge assembly. The lower frame is coupled to a collar of an opening of a tank and a hatch is coupled to the upper frame. The hinge assembly allows the upper frame to pivot the hatch between an open and closed position. The lower frame includes at least one catch to receive an edge of the hatch, when the hatch is closed. Spring members on the upper frame urge the hatch toward the upper frame so that the hatch may be swung away from the opening. Inflating a rubber bladder positioned between the upper frame and hatch overcomes the spring pressure and urges the hatch into tight contact with the collar. The hatch system includes a remote control for inflating the bladder and opening and closing the hatch.