The patent also invents the cooling fan
"The computing device can include an air-moving apparatus to move air along an air flow pathway"
More prosaically, what the 3 modern day engineering visionaries who wrote this patent have invented is a standard iMac setup of monitor, keyboard and mouse, but one of them has had the flash of inspiration that said "hey, let's put all the computery bits in the keyboard instead of the monitor!".
Biting the hand that feeds IT
