Patent ID: 7631819

Claim:
A sprayer head assembly for connection to a container that defines a cavity for storing a chemical to be sprayed, the sprayer head assembly comprising: a sprayer head; a cylindrical valve chamber comprising a valve chamber end wall, the valve chamber end wall having a single opening; a chemical passage that is configured to be in communication with the cavity and in communication with the valve chamber; a vent passage that is configured to be in communication with the cavity and in communication with the valve chamber; a carrier fluid passage that is configured to be in communication with a carrier fluid source and in communication with the valve chamber through the single opening; and a valve moveably positioned within the valve chamber between at least a first position and a second position, the valve comprising: a first passage and a chemical inlet passage in communication with the first passage, the valve being configured such that, in the first position, the valve blocks the vent passage, chemical passage and carrier fluid passage, in the second position, the first passage is configured to be in communication with the carrier fluid passage while the chemical passage is in communication with the chemical inlet passage; a proximal end wall including an outer surface and an inner surface, the proximal end wall having a first opening that, in the second position, is in communication with the single opening in the valve chamber end wall; and a suction generating recess positioned within the first passage, the chemical inlet passage communicating with the first passage through an opening positioned within the suction generating recess and wherein the first passage defines an outlet for discharging a carrier fluid and chemical in a first direction and wherein the valve is rotatable about an axis that is generally parallel to the first direction.