Abstract: A safety arrangement for microwave ovens or similar cooking devices, in which a circuit breaking element and a main switch, which is arranged to be open in conjunction with an unlocking operation of a lock for a door, are interposed in a load circuit connecting between an electric source of power and a load. A first door switch is arranged to be closed when the door is opened and is connected to the load circuit in parallel with the load. An auxiliary switch becomes opened upon unlocking of the lock, and is connected in the load circuit on the load side of the first door switch. A second door switch becomes opened with a delayed time interval after closing of the first door switch, by opening of the door, and is connected to the load circuit on the electrical power source side of the first door switch. The door switches become operated by a door arm extending from the door.

Abstract: A hot blast type oven comprising an outer casing defining a heating chamber adapted to receive foodstuff to be cooked and having a front door for opening and closing the heating chamber. A main burner serves for producing hot gases sent to the heating chamber by a blower. A gas control section including an operation handle controls the supply of gas to the main burner and to a pilot burner adjacent thereto. An electrical control section serves for controlling the main blower and an ignition device for the pilot burner. The gas control section and the electrical control section are constituted as respective units coupled together and detachably mounted for mutual operation. The control sections are operated in accordance with movement of the door such that the operation handle is locked when the door is closed and lighting of the pilot burner can be achieved only by opening the door and displacing the operation handle.