Low cost trigger sprayer having pump with internal spring means

A trigger sprayer assembly for dispensing a liquid substance from a container, the assembly comprising:

• a housing having a liquid passage extending between a first and a second end;
• a nozzle positioned at the first end of the passage, the nozzle having an orifice through which the liquid substance is dispensed;
• a pump element secured to the housing, the pump element having an internal volume which varies in response to actuation of the pump element between an extended position wherein the internal volume is maximized and a contracted position wherein the internal volume is minimized, the pump element drawing the liquid substance from the container in response to an increase in the pump element internal volume and expelling the liquid substance through the nozzle orifice in response to a decrease in the pump element internal volume;
• and
• a spring element secured to the housing, the spring element including a curved elastomeric leaf extending from the housing to the pump element for biasing the pump element toward the extended position and a base attached to the leaf for securing the spring element to the housing;
• wherein the housing has a groove adjacent the spring element and the spring element includes a tab extending from the base, the tab being configured to engage in the housing groove to secure the spring element to the housing.