Drain apparatus and system

Abstract

An example drain apparatus includes a drain body having a cylindrical shape, the drain body configured to position through an opening formed in a floor. The drain body has an upper portion configured for installation above the floor, the upper portion is configured for connection to a drain apparatus pipe of a plumbing system above the floor. The drain body has a lower portion configured for installation below the floor. A pipe hub is formed within the lower portion of the drain body, the pipe hub configured for connection to a pipe of the plumbing system below the floor. An annular space is formed within the drain body between the pipe hub and an outer sleeve of the drain body. A lower drain system pipe is connected to the pipe hub in the annular space.

1 . A drain apparatus, comprising:
 a drain body having a cylindrical shape, the drain body configured to position through an opening formed in a floor, the drain body having an upper portion configured for installation above the floor, the upper portion configured for connection to a drain apparatus pipe of a plumbing system above the floor, and the drain body having a lower portion configured for installation below the floor;   a pipe hub formed within the lower portion of the drain body, the pipe hub configured for connection to a pipe of the plumbing system below the floor;   an outer sleeve of the lower portion of the drain body; and   an annular space formed within the drain body between the pipe hub and the outer sleeve of the drain body, wherein a lower drain system pipe is connected to the pipe hub in the annular space.   
     
     
         2 . The drain apparatus of  claim 1 , wherein the drain body is configured for pre-installing in a base before finishing a floor, and then cut below an upper surface of the finished floor so that the top drain assembly is fitted to the drain body and covered level with the upper surface of the finished floor. 
     
     
         3 . The drain apparatus of  claim 1 , wherein the drain body further comprises a flange. 
     
     
         4 . The drain apparatus of  claim 1 , wherein the drain body walls are made of multiple layers, one of which is a rubber layer. 
     
     
         5 . The drain apparatus of  claim 1 , wherein the drain body walls are made of multiple layers, one of which is a fire stop layer. 
     
     
         6 . The drain apparatus of  claim 1 , further comprising a top drain assembly having a lower lip configured to fit within a compressible fitting, and an upper plate configured to abut against the drain body, wherein the lower lip has a smaller diameter than the upper plate. 
     
     
         7 . The drain apparatus of  claim 6 , wherein the smaller diameter lower lip of the top drain assembly is configured to receive the compressible fitting thereon. 
     
     
         8 . The drain apparatus of  claim 7 , wherein an inner diameter of the compressible fitting is the same as an outer diameter of the lower lip of the top drain assembly. 
     
     
         9 . The drain apparatus of  claim 7 , wherein the compressible fitting has a height that is larger than a height of the lower lip. 
     
     
         10 . The drain apparatus of  claim 7 , wherein the top drain assembly has a bottom plate. 
     
     
         11 . The drain apparatus of  claim 10 , wherein an outer diameter of the bottom plate is the same as an outer diameter of the compressible fitting. 
     
     
         12 . The drain apparatus of  claim 10 , wherein the upper plate has openings to receive a fastener therethrough, and the bottom plate has corresponding openings to receive the fastener therethrough, wherein tightening the fastener installed through the openings in the upper plate and the openings in the lower plate compresses the compressible fitting and causes the compressible fitting to bulge outward to engage an interior of drain body. 
     
     
         13 . The drain apparatus of  claim 1 , further comprising a replaceable drain cover with drainage. 
     
     
         14 . The drain apparatus of  claim 1 , further comprising a replaceable drain cover without drainage. 
     
     
         15 . A drain system, comprising:
 an apparatus having a drain body and configured to position through an opening formed in a floor, the drain body having an upper portion configured for installation above the floor, the upper portion configured for connection to a drain apparatus of a plumbing system above the floor, and the drain body having a lower portion configured for installation below the floor;   a pipe hub formed within the lower portion of the drain body, the pipe hub configured for connection to a pipe of the plumbing system below the floor;   an outer sleeve of the lower portion of the drain body; and   an annular space formed within the drain body between the pipe hub and the outer sleeve of the drain body, the annular space open to receive a pipe coupling in the annular space for connecting the pipe of the plumbing system below the floor to an outside perimeter of the pipe hub of the drain body;   wherein when the drain body is configured to connect to a pipe of a plumbing system.   
     
     
         16 . The drain system of  claim 15 , further comprising a top drain assembly having a top plate with a lower lip configured to fit within the drain body, the top plate having an upper plate configured to abut against the drain body. 
     
     
         17 . The drain system of  claim 16 , wherein the top drain assembly has a bottom plate and a compressible fitting. 
     
     
         18 . The drain system of  claim 17 , wherein an outer diameter of the bottom plate is the same as an outer diameter of the compressible fitting. 
     
     
         19 . The drain apparatus of  claim 18 , wherein the upper plate has openings to receive a fastener therethrough, and the bottom plate has corresponding openings to receive the fastener therethrough, wherein tightening the fastener installed through the openings in the upper plate and the openings in the lower plate compresses the compressible fitting and causes the compressible fitting to bulge outward to engage an interior of drain body. 
     
     
         20 . A method comprising:
 providing a drain body for installation in a floor, the drain body having an interior annular space configured to position through an opening formed in a floor, the drain body having an upper portion configured for installation above the floor, the upper portion configured for connection to a drain apparatus pipe of a plumbing system above the floor, and the drain body having a lower portion configured for installation below the floor; and   providing a pipe hub formed within the lower portion of the drain body, the pipe hub configured for connection to a pipe of the plumbing system from below the floor;   providing an outer sleeve of the lower portion of the drain body;   providing an annular space formed within the drain body between the pipe hub and the outer sleeve of the drain body, wherein a pipe coupling is received in the annular space for connecting the pipe from below the floor to an outside perimeter of the pipe hub of the drain body.