US Patent 7186958 Inhaler

There is an apparatus having a housing, a heating element, a heating element switch, a heating chamber, a heating chamber cover, and a controller. The housing is handheld. The heating element is disposed within the housing. The heating element switch may be electrically coupled with the heating element. The heating chamber is disposed within the housing. The heating chamber cover may be adapted to at least partially eject the heating chamber from the housing when the heating chamber cover is displaced relative to the housing. The controller is electrically coupled with the heating element switch. The controller is adapted to control a transfer of energy to the heating element. The controller may be adapted to prevent the transfer of energy to the heating element if the heating chamber cover is not in a closed position relative to the housing.