Interchangeable load cell assemblies

• US 20080271928A1
• Filed: 05/02/2007
• Published: 11/06/2008
• Est. Priority Date: 05/02/2007
• Status: Active Grant

• Current Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Original Assignee: Ecolab, Inc.
• Inventors: Mehus, Richard J., McCarrick, Henry J., Wiltsie, Ben J., Weber, Bruce W.
• Granted Patent: US 8,277,745 B2
• Time in Patent Office: Days
• US Class Current: 177/1
• CPC Class Codes: G01G 21/23 Support or suspension of weighing platforms G01G21/24 takes precedence

Abstract

A mass-based dispensing system includes a set of interchangeable load cell assemblies. The load cell assemblies are sized to be interchangeably received into a mass-based product dispenser. Each of the interchangeable load cell assemblies has a maximum rated load that is different from the maximum rated load of the other load cell assemblies. The interchangeable load cell assemblies are substantially modular (i.e., have substantially similar external geometries), thus enabling the product dispenser to interchangeably receive the load cells. The interchangeable load cell assemblies enable a single product dispenser to accommodate a broad range of differently weighted products and/or product containers.

Claims

1. A system comprising:

a dispenser that dispenses a product based on a measured weight of the product; and

a set of load cell assemblies each having a different maximum rated load and sized to be interchangeably received into the dispenser to accommodate the dispensing of products having different initial weights,

wherein each load cell assembly includes at least one load cell that measures the weight of the product when the load cell assembly is positioned in the dispenser.

2. The system of claim 1 wherein the set of load cell assemblies further comprise a set of load beams that provide a respective one of the different maximum rated loads, wherein the set of load beams have substantially similar deflections at 100% of the respective maximum rated loads.

3. The system of claim 2 wherein the set of load beams have substantially similar external geometries.

4. The system of claim 1 wherein the set of load cell assemblies have substantially similar external geometries.

5. The system of claim 1 wherein each load cell assembly includes at least one load cell having a maximum rated load that is different from the maximum rated load of the at least one load cell of the other load cell assemblies.

6. The system of claim 1 wherein the load cell assemblies further include substantially similarly sized load cell receiving areas.

7. The system of claim 1 wherein each of the load cell assemblies includes at least one load beam and a strain gauge.

8. The system of claim 1, further comprising a controller that determines the measured weight of the product based on information received from the at least one load cell.

9. The system of claim 1 wherein each of the load cell assemblies further comprises a printed circuit board coupled to receive information from the at least one load cell.

10. The system of claim 1 wherein each of the load cell assemblies further includes a visible marker to indicate the maximum rated load of the respective load cell assembly.

12. The system of claim 1 wherein each of the load cell assemblies further includes at least one load cell receiving area configured to limit torsional rotation of the at least one load cell.

13. The system of claim 1 wherein the product includes one of a concentrate, briquettes, powders or blocks.

14. The system of claim 1 wherein the product is contained within a product capsule, wherein the product capsule is sized to be received in the dispenser.

11. The system of claim 11 wherein the visible marker includes at least one of a color coded emblem, a printed graphic or an embedded marker.

15. A system comprising:

a set of load cell assemblies each having a different maximum rated load, wherein the load cell assemblies are sized to be interchangeably received into a dispenser that dispenses a product based on a measured weight of the product, and wherein the load cell assemblies measure the weight of the product when received into the dispenser.

16. A system comprising:

a first load cell assembly having a first maximum rated load; and

a second load cell assembly having a second maximum rated load;

the first and second load cell assemblies sized to be interchangeably received into a dispenser that dispenses a product based on a measured weight of the product, and wherein the first and second load cell assembly determine the measured weight of the product when received into the dispenser.

17. The system of claim 16 wherein the first and second load cell assemblies have substantially similar external geometries.

18. The system of claim 16 wherein each load cell assembly includes at least one load cell.

19. The system of claim 18 wherein each load cell comprises a load beam and a strain gauge.

20. The system of claim 16 wherein the first load cell assembly includes a first load beam and wherein the second load cell assembly includes a second load beam, and wherein the first load beam and the second load beam have substantially similar deflections at 100% of their respective maximum rated load.