Patent ID: 11881422
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Handling (Mechanical engineering)
Classification: CPC H  A  B | IPC A  B  H

Claim 15:
16. A storage system comprising:
a main frame comprising a lower horizontal frame, a middle horizontal frame on the lower horizontal frame, and an upper horizontal frame on the middle horizontal frame;
a guide bar connected to the middle horizontal frame;
a plurality of upper shelves connected to the guide bar, the plurality of upper shelves storing a material to be transferred;
a plurality of lower shelves connected to the lower horizontal frame, the plurality of lower shelves storing the material;
a plurality of guides connected to the plurality of upper shelves; and
a shelf returning device connected to a selected upper shelf from among the plurality of upper shelves,
wherein the shelf returning device comprises:
a connecting pin connected to the selected upper shelf,
an idler connected to the middle horizontal frame,
a belt connected to the connecting pin, the belt contacting the idler,
a counterweight connected to the belt, and
at least one support bar connected between the middle horizontal frame and the counterweight, the at least one support bar configured to be rotated to extend substantially parallel to the middle horizontal frame in response to horizontal movement of at least one of the plurality of upper shelves or at least one of the plurality of lower shelves.