초록 ▼

A non-aerosol fluid dispenser includes a pump defining a fluid chamber associated with the fluid path extending between the container and fluid outlet. The pump comprises a base presenting a chamber opening, a generally non-deformable panel, a hinge about which the panel swings relative to the base,

A non-aerosol fluid dispenser includes a pump defining a fluid chamber associated with the fluid path extending between the container and fluid outlet. The pump comprises a base presenting a chamber opening, a generally non-deformable panel, a hinge about which the panel swings relative to the base, and a hollow, collapsible bellow section extending between the panel and the base. The dispenser includes a boss sealingly received within the chamber opening, with the fluid path extending through the boss and into the chamber between the supply and discharge valves. Accordingly, when the panel is swung toward the base, the bellows section uniformly collapses, whereby positive pressure created within the chamber closes the supply valve and opens the discharge valve for discharging fluid through the dispenser outlet. When the panel is released, the bellows section resiliently expands, whereby negative pressure created within the chamber opens the supply valve and closes the discharge valve for inducing fluid flow from the container into the chamber.

대표청구항 ▼

[ What is claimed is:] [1.] In a fluid dispenser having a container, an outlet, a fluid path extending between the container and outlet, and pressure-responsive supply and discharge valves spaced along the path for controlling fluid flow therethrough, the improvement comprising:a pump defining a flu

[ What is claimed is:] [1.] In a fluid dispenser having a container, an outlet, a fluid path extending between the container and outlet, and pressure-responsive supply and discharge valves spaced along the path for controlling fluid flow therethrough, the improvement comprising:a pump defining a fluid chamber and including a generally non-deformable panel, a hinge about which the panel swings, and a hollow bellows section projecting from the panel and comprising a plurality of pleats that protect from the hinge such that the bellows section is arcuately collapsible and expandable,said fluid chamber being associated with the fluid path between the supply and discharge valves,said bellows section uniformly collapsing when the panel is swung in a first direction about the hinge, whereby positive pressure created within the chamber closes the supply valve and opens the discharge valve for discharging fluid through the outlet, and resiliently expanding when the panel swings in an opposite second direction about the hinge whereby negative pressure created within the chamber opens the supply valve and closes the discharge valve for inducing fluid flow from the container into the chamber.