US Patent 7841494 Pump dispenser

The invention is a pump cap that is designed to seat on top of a receptacle, which in at least one example is filled with powder or hair fibers. The cap is fitted on top with a deformable dome with an empty chamber of air within it. The cap has an air inlet with a check valve that then opens into a wide flared opening into the dome's empty chamber. The air in the dome is pushed past a check valve and down a long passageway into the receptacle to aggressively disturb the powder or hair fibers within the receptacle. The disturbed hair fibers or powder then exits the cap through a third passage with a flared opening that is flush with the bottom of the cap that then exits out the side of the cap.