Hand-held dispensing pump for spray bottles

A dispensing pump for mounting in the mouth of a container having a liquid therein, comprising:

• a base having a chamber for receiving a liquid, the chamber extending in a first longitudinal direction for receipt through the mouth of the container;
• the base including a sleeve extending laterally with respect to the chamber and in communication therewith for dispensing liquid from the container and the base including a hole therein communicating with a dip tube for the chamber in the base with a liquid from the container, the hole being covered by a vane which serves as a check valve;
• a piston within the chamber, the piston having an axially projecting rod extending therefrom into he base and being biased away from the base by a spring;
• a handle movably mounted on the base and engaging the rod for moving the piston upwardly against the bias of the spring when pressed toward the container;
• the handle being L-shaped and having one leg extending over the base and another leg extending transversely of the sleeve, the handle being pivoted to the base and connected to a portion of the axially projecting rod extending through the base, whereby pivoting the handle in one direction lifts the rod to move the piston against the bias of the spring to eject liquid from the pump;
• a rotary dispensing valve disposed within the sleeve to rotate about an axis normal to the sleeve, the rotary dispensing valve including a cylindrical wall defining a central chamber and first and second apertures communicating with the central chamber and configured to release liquid from the pump as a stream and as a spray of relatively fine droplets, respectively;
• and
• the dispensing valve further including a relatively narrow channel in communication with the chamber wherein liquid in the channel has a greater resistance to flowing back toward the chamber than the elasticity of the vane which serves as the check valve closing the hole in the base in communication with the dip tube, so that the chamber is filled with liquid from the container when the handle is released to create a vacuum within the chamber.