Patent ID: 7383857

Claim:
An on-off controller for controlling a pressurized fluid from a provided bottle, the bottle having a poppet valve biased in a closed position, wherein the pressurized fluid flows from the bottle when the poppet valve is open, the on-off controller comprising: a body having a cavity, an inlet, an outlet, and a vent, the inlet and the outlet having continuous fluid communication with the cavity, the vent having sealable fluid communication with the cavity; a seal having a bore therethrough, the seal for sealing the vent; a rod having a first end portion, a second end portion, and a middle portion between the first end portion and the second end portion, the middle portion having a groove therein, the rod positioned in the bore; and a position mechanism that moves the rod to: close the vent and open the poppet valve, wherein the groove is positioned on a cavity side of the seal or a vent side of the seal but not both, the rod sealably contacts the seal, and the pressurized fluid enters the inlet; and open the vent and close the poppet valve, wherein at least a portion of the groove is positioned on the cavity side of the seal and at least a portion of the groove is positioned on the vent side of the seal, and the rod does not sealably contact the seal at the groove, whereby the pressurized fluid exits through the groove to the atmosphere.