US 11,700,940 B1
Combination shelf with dual-pole vertical columns
Henry Chen, Taipei (TW)
Assigned to PROTREND CO., LTD., Taipei (TW)
Filed by PROTREND CO., LTD., Taipei (TW)
Filed on Sep. 22, 2022, as Appl. No. 17/950,141.
Int. Cl. A47B 57/54 (2006.01); A47B 47/00 (2006.01); F16B 2/24 (2006.01)
CPC A47B 57/545 (2013.01) [A47B 47/0083 (2013.01); F16B 2/245 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A combination shelf which includes: at least four column units, at least two storage layers, and multiple clips; each of the least four column units is positioned at each corner of each storage layer; each of the clips secures each corner of each storage layer to one respective column unit; each of the column units consists of a pair of vertical poles arranged in parallel and connected by multiple connections; both ends of each of the multiple connections links each of the pair of the vertical poles; each of the multiple clips has a vertical groove with two wings respectively attached to both sides of an opening of the vertical groove; outer faces of the two wings are bevels and lower ends of the two wings protrude outward; each of the multiple clips is embedded into one of the vertical poles and supported by one of the connections; each vertical groove is facing one of the storage layers;
wherein the two wings of each clip are located at the lower half of the opening of the respective vertical groove; each clip further has a horizontally extending groove at a lower end of each clip; each of the connections of the column units is inserted into one of the horizontally extending grooves of the clips to secure the respective clip; each corner of each storage layer has an outward-opening U-shaped fastener; each side of a lower half of each outward-opening U-shaped fastener has a top pusher extending towards the storage layer; each top pusher is a bevel and protrudes from a lower end of each top pusher to an upper end of each top pusher; each of the outward-opening U-shaped fasteners covers the corresponding clip and inner faces of the two top pushers of each outward-opening U-shaped fastener press against outer faces of the wings of the corresponding clip when securing the corresponding storage layer to one of the column units; by fitting together the corresponding bevels of the top pushers and the two wings, the clips and the fasteners press against each other and therefore clamp the respective vertical pole.