A timed gas cut-off device, which comprises a device body, comprising an inlet gas channel, an outlet gas channel and a valve rod channel; the inlet and outlet gas channels are respectively in communication with the valve rod channel, an accommodation chamber with a through hole communicating the accommodation chamber with the valve rod channel; a valve rod device, comprising a rod body slidably cooperating in the valve rod channel, a shim connected to the rod body and moves in synchronization with the rod body to open or close the valve rod channel; a free end of the rod body extends through the through hole and disposed inside the accommodation chamber; an elastic soft sealing piece, sealingly connected to the through hole, sleeved on the free end of the rod body; a timer with a drive piece connected inside the accommodation chamber for timed gas use and improves the safety.

A check valve driving device for injecting gas, which enables an accurate operation of a check valve for injecting gas and long-term usage by enhancing durability, comprises: an upper portion fixing block which moves vertically by coupling onto a yoke repeating vertical movements; a lower portion fixing block which is coupled to a prechamber at a lower portion of the yoke; a roller which is rotatably coupled onto the upper portion fixing block, and of which a center portion diameter is bigger than diameters of both end portions; a guide, which is rotatably coupled onto the lower portion fixing block, for rotating when a curved surface on one side thereof comes into contact with the roller moving vertically; an operation piece, which is rotatably coupled onto the lower portion fixing block, wherein a front end of the operation piece moves vertically in accordance with the rotation of the guide; and a pressing rod which is coupled to the front end of the operation piece, and which is lowered in accordance with the lowering of the front end of the operation piece.

A timer applicable to various types of fuel gas valves and a fuel gas valve including the timer are provided. The timer includes a rotary knob, a gear-set main body, a guide plate including a guide tube, a push axle, and an elastic element. The timer is combinable with a valve body to form a fuel gas valve. With the guide plate including the guide tube in which the push axle is disposed, a push bar of the timer may push the push axle to accurately drive a valve plug assembly arranged in the valve body to open and shut down a flow passage of the valve body between an entry opening and an exit opening. This allows one single timer to be applicable to various types of valve body and a fuel gas valve including the timer enables use of fuel gas in a safe and correctly timing manner.

The invention relates to a control valve system for use with a gas grill, and more particularly to a fuel shut off device that is attached to the fuel supply to turn it off, if the integrated timing device is allowed to accrue time equal to the preset amount of time set. A multi-segment tactile dial enables a user to feel the dial and set the appropriate time increment without having to look at the dial.

The disclosure relates to a control valve system for use with a gas grill, and more particularly to a fuel shut off device that is attached to the fuel supply to turn it off, if the integrated timing device is allowed to accrue time equal to the preset amount of time set. A multi-segment tactile dial enables a user to feel the dial and set the appropriate time increment without having to look at the dial.