Trigger sprayer

Abstract From the Canadian patent

The trigger actuated pump sprayer has a nozzle cap which surrounds a unitary element and forms a spin chamber therewith, the element having an integrally connected spring and biased discharge check valve and including a plurality of supply channels, the nozzle cap being rotatable without axial displacement relative to the element and containing a plurality of tangential openings being arranged relative to the channels for controlling the swirl velocity in the spin chamber upon, cap rotation, and thus the pattern range of discharge through the discharge orifice from an OFF position.