Patent ID: 7458414

Claim:
A hydraulic reservoir with integrated heat exchanger comprising: a. a generally cylindrical central section having an inner cylindrical shell portion and a peripherally-spaced cylindrical outer shell portion, with a first annular gap therebetween, said outer shell portion being provided with a plurality of external cooling fins; b. a bottom cap portion, closing said central section at a lower end portion thereof; c. a top cap portion, closing said central section at an upper end portion thereof, having an outer cap portion and a spaced inner cap portion, with a second gap therebetween forming a direct continuation of said central section first gap, said outer cap portion including a fluid inlet port in communication with said second gap; d. said central section, together with said top and bottom cap portions, defining an internal central fluid cavity containing pressurized fluid; and e. a fluid supply/return port and at least one fluid outlet port extending into said central fluid cavity; f. wherein incoming fluid, into said fluid inlet port, flows from said second gap into and through the entire length of said first gap before entering said central fluid cavity, thereby maximizing heat transfer from said fluid via said plurality of external cooling fins.