Patent ID: 6439278
Filing Date: 2002-08-27
Classification: F17C

Abstract:
A fuel delivery system for delivering compressed natural gas into an external pressure vessel, comprising:a reservoir having a pump intake line and a return line; a hydraulic fluid contained in the reservoir; at least one tank having a chamber containing a compressed natural gas, a gas port, and a hydraulic fluid port, each of which is in fluid communication with the gas stored in the chamber; a hose line connected to the gas port for connection to an external pressure vessel; and a pump connected to the pump intake line for pumping the hydraulic fluid from the reservoir to the hydraulic fluid port and into physical contact with the gas stored in the chamber to maintain a selected minimum pressure at the gas port while the gas flows from the gas port through the hose line and into an external pressure vessel; wherein the tank is elongated and has first and second ends; and wherein each of the ports extends through the first end and one of the ports comprises a tube leading within the chamber to a point adjacent to the second end.