Nestable drum system

Abstract

A nestable drum for storing liquids is disclosed. In one non-limiting example, a drum may include a tapered cylinder between a first end and a second end. The tapered cylinder can have a top opening at the first end. A recessed port is positioned along a surface of the tapered cylinder. The recessed port can provide a side opening and can be configured as an outlet port for a liquid. The drum also includes a first recessed platform and a recessed platform. The first recessed platform can be nearer to the first end than the second end along on the surface of the tapered cylinder. The second recessed platform can nearer to the second end than the first end along on the surface of the tapered cylinder. The second recessed platform can extend further inward toward a center of the tapered cylinder than the first recessed platform.

Therefore, the following is claimed: 
     
         1 . A drum for storing fluid, comprising:
 a tapered cylinder between a first end and a second end, the tapered cylinder having a top opening at the first end;   a recessed port along a surface of the tapered cylinder, the recessed port providing a side opening and being configured as an outlet port for a liquid;   a first recessed platform that is nearer to the first end than the second end along on the surface of the tapered cylinder; and   a second recessed platform that is nearer to the second end than the first end along on the surface of the tapered cylinder, the second recessed platform extending further inward toward a center of the tapered cylinder than the first recessed platform.   
     
     
         2 . The drum of  claim 1 , wherein the first recessed platform is in longitudinal alignment with the second recessed platform. 
     
     
         3 . The drum of  claim 1 , wherein the recessed port comprises a first recessed port that is nearer to the first end than the second end of the tapered cylinder, and further comprising a second recessed port that is nearer to the second end of the tapered cylinder. 
     
     
         4 . The drum of  claim 1 , the first recessed platform includes a first slanted surface that is angled inward to a greater degree than a second sloped surface of the second recessed platform. 
     
     
         5 . The drum of  claim 1 , wherein the taper cylinder comprises a lip near the first end. 
     
     
         6 . The drum of  claim 5 , further comprising an annular clamp that has an annular slot that is configured to receive the lip. 
     
     
         7 . The drum of  claim 1 , further comprising a cover that has a lowered rim. 
     
     
         8 . The drum of  claim 1 , wherein the first recessed platform has a first longitudinal length that is larger than a second longitudinal length of the second recessed platform. 
     
     
         9 . The drum of  claim 1 , wherein the second end comprises a concave bottom surface. 
     
     
         10 . The drum of  claim 9 , wherein the concave bottom surface comprising a first recessed area and a second recessed area that are connected by a recessed bridge. 
     
     
         11 . The drum of  claim 1 , further comprising an insert that fits within the recessed port, the insert comprising a ring and an outer rim that extends from the ring. 
     
     
         12 . The drum of  claim 1 , further comprising an insert that fits within the recessed port, the insert comprising a ring with a first plurality of threads on an inner surface of the ring and a second plurality of threads on an outer surface of the ring. 
     
     
         13 . The drum of  claim 12 , wherein the insert couples to a fluid connector for opening and closing a pathway for a liquid to enter or exit the tapered cylinder. 
     
     
         14 . The drum of  claim 1 , wherein the first end of the tapered cylinder having a first diameter that is larger than a second diameter of the second end. 
     
     
         15 . An apparatus for storing fluid, comprising:
 a tapered cylinder between a first end and a second end, the tapered cylinder having a top opening at the first end;   a first recessed port along a surface of the tapered cylinder, the first recessed port providing a first side opening; and   a second recessed port along the surface of the tapered cylinder, the second recessed port providing a second side opening, the second recessed port being closer to the second end than the first recessed port.   
     
     
         16 . The apparatus of  claim 15 , further comprising:
 a first recessed platform that is nearer to the first end than the second end along on the surface of the tapered cylinder; and   a second recessed platform that is nearer to the second end than the first end along on the surface of the tapered cylinder.   
     
     
         17 . The apparatus of  claim 16 , wherein the second recessed platform extends further inward toward a center of the tapered cylinder more than the first recessed platform. 
     
     
         18 . The apparatus of  claim 16 , wherein the first recessed platform comprises a first slanted surface that is shorter than a second sloped surface of the second recessed platform. 
     
     
         19 . The apparatus of  claim 16 , wherein the apparatus comprises a first apparatus, and the second recessed platform of the first apparatus is configured to be placed onto a respective first recessed platform of a second apparatus. 
     
     
         20 . The apparatus of  claim 15 , wherein the taper cylinder comprises a lip near the first end.