Patent ID: 7571836

Claim:
A manually operated trigger sprayer comprising: a sprayer housing having a pump chamber in the sprayer housing, a liquid inlet opening on the sprayer housing, a liquid supply passage extending through the sprayer housing communicating the liquid inlet opening with the pump chamber, a liquid outlet opening on the sprayer housing, and a liquid discharge passage extending through the sprayer housing communicating the liquid outlet opening with the pump chamber; a pump piston mounted in the pump chamber for reciprocating movement between charge and discharge positions of the pump piston in the pump chamber; a trigger mounted on the sprayer housing for movement of the trigger relative to the sprayer housing; a spring having a curved length with opposite rearward and forward ends, the spring rearward end being operatively connected to the sprayer housing outside the pump chamber and the spring forward end having an opening, and; a piston rod projecting from the pump piston and into the spring opening.