Hydraulic reservoir

Claim 1

A reservoir for hydraulic fluids in hydraulic systems, said reservoir having a plurality of separate chambers on top of each other, the said chambers being connected to each other by open ports through which the hydraulic fluid is allowed to flow between the said plurality of chambers, the said reservoir having a plurality of substantially vertical thin walled tubings installed between its upper and the lower boundary surfaces, the said thin walled tubings passing through the said plurality of chambers, the said thin walled tubings having both the upper and the lower ends open for free movement of the air through the confinements of the said thin walled tubings, the said thin walled tubings transferring the heat from the hydraulic fluid to the air column within the confinements of the said tubings causing the upward movement of the warm air through the confinements of each of the said plurality of thin walled tubings, the rate of transfer of the heat from the hydraulic fluid to the air column within the confinements of the said thin walled tubings being determined by the temperature differential between the hydraulic fluid and the surrounding atmosphere, thereby providing a self-regulated heat dissipation means from the said reservoir to the surrounding atmosphere, without power driven mechanical components.