Adjustable dosing dispensers and methods for using the same
Embodiments of the invention relate to dosing dispensers and in particular to dosing dispensers that may be operated using one hand by raising and filling a dosing chamber followed by lowering and dispersing a product from the dosing chamber and wherein the dose may be selected or adjusted and a user may visually confirm that the proper dose is being loaded and delivered by the dispenser.
1. A dispensing device, comprising:
a container, comprising an opening and an internal volume;
a piston within the internal volume of the container;
a dispenser fixed to the opening, the dispenser comprising:
a base, comprising an inlet path and an outlet path;
a valve seat received in the base, the valve seat comprising a top disc portion having a peripheral edge seal, an inlet tube, extending downward from the top disc portion, and in fluid communication with the inlet path, and an outlet tube, extending downward from the top disc portion, and in fluid communication with the outlet path;
a bi-valve seated in the valve seat, the bi-valve comprising an inlet valve seated in an inlet valve seat portion in the inlet tube and an outlet valve seated in an outlet valve seat portion in the outlet tube, wherein the inlet valve seat portion and the outlet valve seat portion are both radially inward of the peripheral edge seal of the valve seat;
a dispenser head seated on the base and in contact with the peripheral edge seal of the valve seat, wherein the peripheral edge seal and an interior portion of the dispenser head define a dosing chamber;
a lock cylinder seated on the base; and
a shroud seated over the lock cylinder on the base;
wherein the dispenser head is movable between at least a first position having a dosing chamber with a first volume to a second position having a dosing chamber with a second volume, the second volume being greater than the first volume.
2. The dispensing device of claim 1 further comprising an orifice at an end of the outlet path.
3. The dispensing device of claim 2 further comprising a spout valve within the orifice.
4. The dispensing device of claim 1 further comprising a removable spout received about the outlet path.
5. The dispensing device of claim 3 further comprising a removable spout received about the outlet path, orifice and spout valve.
6. The dispensing device of claim 1 wherein said valve seat further includes a valve retention portion.
7. The dispensing device of claim 1 further comprising a lever integrated with the dispenser head.
8. The dispensing device of claim 5 further comprising a lever integrated with the dispenser head.
9. The dispensing device of claim 1 wherein said lock cylinder includes a plurality of stop limits restricting movement of the dispenser head and defining at least said first position and said second position.
10. The dispensing device of claim 3 wherein said lock cylinder includes a plurality of stop limits restricting movement of the dispenser head and defining at least said first position and said second position.
11. The dispensing device of claim 5 wherein said lock cylinder includes a plurality of stop limits restricting movement of the dispenser head and defining at least said first position and said second position.
12. The dispensing device of claim 7 wherein said lock cylinder includes a plurality of stop limits restricting movement of the dispenser head and defining at least said first position and said second position.
13. The dispensing device of claim 8 wherein said lock cylinder includes a plurality of stop limits restricting movement of the dispenser head and defining at least said first position and said second position.
14. The dispensing device of claim 7 , wherein said lever projects radially outward through a gap in said shroud and wherein the lever is operable for moving the dispenser head in an axial direction away from and toward said container to define at least said first position and said second position.
15. The dispensing device of claim 8 , wherein said lever projects radially outward through a gap in said shroud and wherein the lever is operable for moving the dispenser head in an axial direction away from and toward said container to define at least said first position and said second position.