Patent ID: 7384006

Claim:
A sprayer adapted to be coupled to a container to dispense a substance in the container, the sprayer comprising: a dispensing head enclosing a pump, comprising a piston and a pump cylinder, for pumping the substance, a motor for driving the pump, a battery coupled to the motor and adjacent to the container when the dispensing head is coupled to a container, said dispensing head carrying an actuator for starting and stopping the motor, and a nozzle in fluid communication with a discharge end of the pump, wherein the nozzle comprises a cap, said cap having an inside wall with a generally central discharge opening; a fluid flow path having a portion in fluid communication with an intake end of the pump and another portion inside the container; a venting arrangement including a first vent and a second vent associated with the pump cylinder, said first vent adapted to allow air into the cylinder and said second vent in fluid communication with the container, generally opposite to the first vent, and adapted to allow air and excess fluid into the container; and a stop element adjacent to the flow path, the stop element operably coupled to the actuator and configured to prevent fluid flow through the pump and nozzle when the motor is stopped.