Patent ID: 11971293
Assignee: SHEKEL SCALES (2008) LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. A method of tracking inventory of non-homogeneous products in a refrigerator, the method comprising:
a. tracking weight of non-homogeneous products stored on a shelf assembly disposed in the refrigerator, the shelf assembly comprising (i) opposing load-cell bases detachably attached to respective left and right internal walls of the refrigerator, (ii) a rigid shelf frame, at least 25% of the horizontal surface area thereof being open to a vertical airflow therethrough, (iii) a respective plurality of load cell assemblies fixedly attached to each of said opposing load-cell bases, each load cell assembly comprising: (A) a load cell body having a free end and an anchored portion, and including a spring element and at least one receiving element, and (B) a strain-sensing gage, bonded to said spring element and adapted to measure a strain in said spring element, and (iv) a shelf disposed upon said plurality of load cell assemblies, at least 50% of the horizontal surface area of the shelf being open to permit a vertical airflow therethrough;
b. in response to a change in weight of the products on the shelf assembly, sending information about the weight of the products from at least one weighing assembly of said plurality of weighing assemblies to a computing device; and
c. in response to receiving the information about the weight of the products:
i. determining, by the computing device, that a product has been added to or removed from the shelf assembly, and
ii. in response to the determining that a product has been added to or removed from the shelf assembly, identifying the product added or removed.