Patent ID: 11877658
Assignee: RATERMANN MANUFACTURING, INC.
Field: Furniture, games (Other fields)
Classification: CPC A  F | IPC A  F

Claim 15:
16. A method as in claim 15, wherein each of the shelves are in the form of parallel rails attached at one end of the rails via hinges to a crossbar of the frame structure and each rail resting at an opposite end of the rails upon a pair of the load cells fixed to another crossbar of the frame structure, each of the plurality of gas cylinder tanks being disposed horizontally upon the parallel rails of a respective one of the shelves, and further wherein the load cell output signals are associated with three threshold values to indicate respectively (1) one of the plurality of gas cylinder tanks being absent, (2) an empty one of the plurality of gas cylinder tanks being present, and (3) a full one of the plurality of gas cylinder tanks being present for each set of the parallel rails.