Patent ID: 7079394

Claim:
A method of transferring heat in a portable computing apparatus that includes vertical walls surrounding a base portion and is powered by a central processing unit, the method comprising: positioning, a fan of a flat type having an impeller rotatable in a circular housing and positioned on a shaft where the impeller rotation is perpendicular to said shaft, the fan being positioned at a location in said base portion at an intersection of a first and second of said vertical walls and each of said first and second walls has a location that is in a tangential relationship to said circular housing, modifying said fan so that input air enters said circular housing in the vicinity of said shaft and is forced out of first and second exhaust openings in said circular housing that coincide with said tangential relationship locations of said first and second walls when said impeller rotates, providing first and second air exhaust openings through one or more of the vertical walls at said tangential relationship locations, and, providing an air flow enhancing member that includes an exhaust air conduit between said exhaust openings in said fan housing and said exhaust openings through said vertical walls of said computer base portion.