Stackable rack and method of using the same

Abstract

A stackable rack includes a bottom rack frame; a top rack frame; a locking assembly that connects with the bottom rack frame and the top rack frame; wherein the bottom rack frame comprises a main supporting frame, at least one first supporting frame rotatably coupled with the main supporting frame and supported on a ground, and a second supporting frame having a securing assembly being coupled with the first supporting frame and rotatably coupled with the main supporting frame; wherein the securing assembly comprises at least one locking bracket with a locking cavity being engaged with the first supporting frame.

What is claimed is: 
     
         1 . A stackable rack, comprising:
 a bottom rack frame;   a top rack frame;   a locking assembly that connects the bottom rack frame with the top rack frame; wherein   the bottom rack frame comprises a main supporting frame, at least one first supporting frame rotatably coupled with the main supporting frame and supported on a ground, and a second supporting frame rotatably coupled with the main supporting frame and having a securing assembly being coupled with the first supporting frame; wherein   the securing assembly comprises at least one locking bracket with a locking cavity being engaged with the first supporting frame.   
     
     
         2 . The stackable rack of  claim 1 , wherein the top rack frame is positioned on the main supporting frame. 
     
     
         3 . The stackable rack of  claim 1 , wherein the top rack frame comprises a top locking frame being coupled with the main supporting frame of the bottom rack frame through the locking assembly. 
     
     
         4 . The stackable rack of  claim 1 , wherein the locking assembly comprises a bottom retainer having a bottom screw hole arranged on the bottom rack frame, a top screw hole formed on a top locking frame of the top rack frame, and a first fastener engaged with the bottom screw hole and the top screw hole. 
     
     
         5 . The stackable rack of  claim 1 , wherein the second supporting frame is vertically arranged between a pair of the first supporting frames. 
     
     
         6 . The stackable rack of  claim 1 , wherein the locking brackets are affixed on free ends of the second supporting frame. 
     
     
         7 . The stackable rack of  claim 1 , wherein the locking bracket is a U-shaped bracket with the locking cavity being faced to the first supporting frame. 
     
     
         8 . The stackable rack of  claim 1 , wherein the securing assembly comprises a through-hole formed on the locking bracket and a second fastener being passed through the through-hole and the first supporting frame to secure the second supporting frame being coupled with the first supporting frame. 
     
     
         9 . The stackable rack of  claim 1 , wherein the second supporting frame is rotatably coupled with the main supporting frame through a middle supporting frame. 
     
     
         10 . The stackable rack of  claim 1 , wherein the second supporting frame is rotated towards the first supporting frame to insert the first supporting frame into the locking cavity. 
     
     
         11 . The stackable rack of  claim 1 , wherein the bottom rack frame further comprises a bottom locking frame positioned between a pair of first supporting frames. 
     
     
         12 . The stackable rack of  claim 1 , wherein the securing assembly comprises a pair of locking brackets, one of the pair of the locking brackets being affixed on one side of the second supporting frame and the other one of the pair of the locking brackets being affixed on an opposite side of the second supporting frame. 
     
     
         13 . The stackable rack of  claim 4 , wherein the bottom rack frame is supported on the ground with the top rack frame being placed on the bottom rack frame. 
     
     
         14 . A method of forming a stackable rack comprising:
 providing a bottom rack frame comprising a main supporting frame, at least one first supporting frame rotatably coupled with the main supporting frame and a second supporting frame;   rotating the first supporting frame with the main supporting frame towards the second supporting frame;   rotating the second supporting frame with the main supporting frame towards the first supporting frame;   engaging the first supporting frame with a locking cavity formed on a locking bracket of a securing assembly; and   securing the top rack frame on the bottom rack frame by the locking assembly.   
     
     
         15 . The method of  claim 14 , further comprising: vertically arranging the second supporting frame between a pair of the first supporting frames. 
     
     
         16 . The method of  claim 14 , comprising:
 providing a top locking frame of the top rack frame being coupled with the main supporting frame of the bottom rack frame.   
     
     
         17 . The method of  claim 14 , comprising:
 providing a bottom retainer having a bottom screw hole arranged on the bottom rack frame and a top screw hole formed on a top locking frame of the top rack frame; and   engaging a first fastener with the bottom screw hole and the top screw hole.   
     
     
         18 . The method of  claim 14 , comprising:
 supporting the top rack frame on the ground by the first supporting frame and the second supporting frame; and   placing the top rack frame on the main supporting frame of the bottom rack frame.   
     
     
         19 . The method of  claim 14 , comprising:
 providing a through-hole formed on the locking bracket and a second fastener being passed through the through-hole and the first supporting frame to secure the second supporting frame being coupled with the first supporting frame.   
     
     
         20 . The method of  claim 14 , wherein the securing assembly comprises a pair of locking brackets, one of the pair of the locking brackets being affixed on one side of the second supporting frame and the other one of the pair of the locking brackets being affixed on an opposite side of the second supporting frame.