Patent ID: 8100121

Claim:
A gas cooking hob comprising: a plurality of gas burners; a control unit; a main gas pipe; a plurality of gas pipe sections with each of the gas burners being connected to the main gas pipe via a respective gas pipe section; a switch controlled valve, the switch controlled valve being associated with a given one of the gas pipe sections or with the main gas pipe and the switch controlled valve being operable in a gas flow mode to permit the flow of gas such that gas flows to the gas burners and being operable in a supply interruption mode to block the flow of gas such that no gas flows to the gas burners; a timer element, the timer element being operatively associated with the switch controlled valve such that the switch controlled valve operates in a timed cut-off operation in which the switch controlled valve is in the gas flow mode permitting the flow of gas and is thereafter switched into the supply interruption mode blocking the flow of gas when a timed cut-off point is reached at the expiration of a predetermined time interval as determined by the timer element; and a manually operated switch, the manually operated switch being operatively associated with the switch controlled valve and the manually operated switch being operable in a manual cut-off override operation in which, during the course of a given timed cut-off operation of the switch controlled valve wherein the switch controlled valve is permitting the flow of gas and a respective timed cut-off point to be reached at the expiration of a predetermined time interval as determined by the timer element has not yet been reached, a manual actuation of the manually operated switch results in the switch controlled valve switching into the supply interruption mode so that the switch controlled valve blocks the flow of gas, thereby resulting in an interruption of gas flow to the gas burners at a time before the respective timed cut-off point of the given timed cut-off operation has been reached, wherein output of the manually operated switch and output of the timer element are provided as inputs to the control unit and the control unit controls the switch controlled valve.