Patent ID: 7591288

Claim:
A fuel feeder comprising: a fuel reserve body to reserve a fuel; a fuel feed unit to feed the fuel in the fuel reserve body to electronic equipment; a control unit to control the fuel feed unit, wherein the control unit obtains equipment information from the electronic equipment and operates the fuel feed unit to feed the fuel to the electronic equipment after the control unit has performed authentication of the electronic equipment; a content meter to examine fuel ingredients; and a fuel extraction unit to extract fuel remaining in the electronic equipment; wherein the control unit operates the fuel extraction unit to extract a part of the fuel remaining in the electronic equipment, and controls the content meter to examine the ingredients of the extracted fuel; wherein when the ingredients examined by the content meter are not proper, the control unit operates the fuel extraction unit to continue extracting the remaining fuel from the electronic equipment, and then the control unit operates the fuel feed unit to feed the fuel to the electronic equipment after the remaining fuel has been extracted from the electronic equipment; and wherein when the ingredients examined by the content meter are proper, the control unit operates the fuel extraction unit so as not to extract the remaining fuel from the electronic equipment and operates the fuel feed unit to feed the fuel to the electronic equipment.