Patent ID: 6922854

Claim:
A plunger for clearing a clogged drain, comprising: a chamber having an upper end, a lower end, and an inner cavity for receiving a compressed gas through an opening adjacent the upper end of the chamber; a sealing mechanism adjacent the lower end of the chamber for connecting the plunger to a drain opening; a nozzle connected to the upper end of the chamber; a handle connected to and axially moveable with respect to the upper end of the chamber; a compressed gas canister connected for movement with the handle and having a puncture point spaced from and in substantially axial alignment with a pin on the nozzle; and a burst disk within the inner cavity between the upper and lower ends of the chamber for providing a temporary barrier to accumulate pressure within the inner cavity, said burst disk divides said chamber into an upper chamber and a lower chamber, wherein the inner cavity of the upper chamber has a smaller volume than the inner cavity of the lower chamber, wherein the burst disk is adapted to burst when the pressure in the chamber reaches a predetermined level, to thereby send a sudden burst of gas and energy into the drain.