Safety system and fuel cap for inhibiting operation of an apparatus during refueling

摘要

A liquid fuel burning apparatus having a system for interrupting operation of the apparatus during refueling. The apparatus has a spring biased cable mounted at one end within a slot located proximate a refueling opening. A fuel tank cap has a projection which is adapted to contact a portion of the cable disposed within the slot. When the cap is fully seated on the refuelling opening of the fuel tank, the cable is depressed within the slot by the projection. When the cap is removed, the biasing device causes the cable to move to a released position. For example, this movement of the cable in a specifically disclosed heater embodiment is transmitted via the cable to a wick retracting mechanism which responds by lowering the wick into the reservoir and extinguishing any flames.