Patent ID: 7175111

Claim:
A manually operated sprayer for a container of liquid to be sprayed, comprising, variable volume pump means having liquid inlet means for connecting the pump means with liquid in the container, outlet means connecting the pump means with a discharge opening, a manual actuator for activating the pump means for pumping liquid from the container through the outlet means and the discharge opening, the sprayer including a control module having spring biased product and vent valves reciprocably disposed therein, said product and vent valves being simultaneously reciprocable between valve open and valve closed positions by engagement of said manual actuator to said product and vent valves, wherein in said valve open position, said product and vent valves respectively preventing flow of product and air respectively into said liquid inlet means and into a vent passage in communication between atmosphere and an interior of the container, and in said valve closed position, said product and vent valves respectively enabling flow of product and air respectively into said liquid inlet means and into said vent passage.