Patent ID: 7258138

Claim:
An on-off controller for controlling a flow of fluid from a provided bottle, the bottle having a poppet valve biased in a closed position, wherein 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 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 first end portion and the second end portion having a first diameter, the middle portion having a second diameter, the first diameter greater than the second diameter, the rod positioned in the body, wherein the first end portion opens the poppet valve; a seal having a bore therethrough, the rod positioned in the bore; and a position mechanism that moves the rod to: close the vent, wherein the second end portion sealably contacts the seal; and open the vent, wherein the middle portion moves towards the seal and through the bore thereby breaking sealable contact with the rod, whereby fluid in the cavity exits to the atmosphere.