Rotary volumetric piston dispenser with adjustable camming assembly, and rinsing device

A rotary volumetric piston dispenser, comprising:

• a rotary assembly that is rotable generally along its central axis, said rotary assembly having a chamber and a radially positioned cylinder extending from and communicating with the chamber, said rotary assembly having an axial channel at its axis and extending therethrough for receiving a supply of rinsing fluid and one or more nozzles connected to said axial channel for directing rinsing fluid outward radially into said rotary chamber;
• a piston that is radially mounted on the rotary assembly and within said cylinder wherein said piston and cylinder define a compartment;
• a cam track assembly generally adjacent to an axial end of said rotary assembly wherein said cam track assembly includes a fixed section, pivotal section means for varying the volume of said compartment, compression means for exerting a radially directed force on the material in said compartment, and swingable section means for radially extending said piston beyond the radial extent of said cylinder, whereby rinsing fluid flows in an outward direction of said cylinder;
• a cam follower received by said cam track assembly, said cam follower being in operative engagement with said piston wherein movement of the cam follower along said cam track assembly effects radial movement of said piston;
• manifold means for depositing material to be dispensed into said compartment;
• means for rotating said compartment to a dispensing location at which the material separates from said compartment and from the rotary assembly and
• a strap member closely wrapped around a portion of the radially extended periphery of said rotary assembly, and said strap member further defines said compartment wherein said strap member includes a slot, said manifold means includes a mouth, and said slot and said mouth open into each other.