Sink cabinet drain system

Abstract

In one example, a sink cabinet drain system may include a sink cabinet, a faucet, a supply line, a custom-fit drain pan, and a gravity-drained cabinet waste line. The sink cabinet may support a sink basin. The faucet may be configured to direct water into the sink basin. The supply line may be configured to supply pressurized water to the faucet, the supply line being routed through the cabinet. The custom-fit drain pan may be disposed within the cabinet, beneath both the supply line and the sink basin. The upper surface of the drain pan may be sloped to drain to a collection orifice. A gravity-drained cabinet waste line may be configured to collect liquid from the collection orifice and deliver the liquid, via gravity, to a sewer system.

1 . A sink cabinet drain system comprising:
 a sink cabinet, the cabinet supporting a sink basin;   a faucet configured to direct water into the sink basin;   a supply line configured to supply pressurized water to the faucet, the supply line being routed through the cabinet;   a custom-fit drain pan disposed within the cabinet, beneath both the supply line and the sink basin;
 wherein the drain pan has an upper surface, the upper surface being sloped to drain to a collection orifice; 
   a gravity-drained cabinet waste line configured to collect liquid from the collection orifice and deliver the liquid, via gravity, to a sewer system.   
     
     
         2 . The system of  claim 1 , comprising a sink basin waste line;
 wherein the sink basin waste line is configured to transfer, via gravity, liquid waste from the sink basin to the cabinet waste line.   
     
     
         3 . The system of  claim 2 , comprising a check valve installed in the cabinet waste line to prevent backflow from the sewer system. 
     
     
         4 . The system of  claim 3 , wherein the check valve is installed downstream of both the cabinet waste line and the sink basin waste line. 
     
     
         5 . The system of  claim 1 , comprising a perforated cap disposed in the collection orifice. 
     
     
         6 . The system of  claim 1 , wherein the collection orifice is a first orifice, the system comprising a second orifice in the drain pan. 
     
     
         7 . The system of  claim 6  wherein the second orifice is configured to receive the sink basin waste line and provide a liquid-tight seal between the drain pan and the sink basin waste line. 
     
     
         8 . The system of  claim 7 , wherein the liquid tight seal comprises a bulkhead. 
     
     
         9 . A sink cabinet drain system comprising:
 a sink cabinet, the cabinet supporting a sink basin;   a faucet configured to direct water into the sink basin;   a supply line configured to supply pressurized water to the faucet, the supply line being routed through the cabinet;   a custom-fit drain pan disposed within the cabinet, beneath both the supply line and the sink basin;
 wherein the drain pan has an upper surface, the upper surface being sloped to drain to a collection orifice; 
   a gravity-drained cabinet waste line configured to collect liquid from the collection orifice and deliver the liquid, via gravity, to a sewer system; and   a sink basin waste line, wherein the sink basin waste line is configured to transfer, via gravity, liquid waste from the sink basin to the cabinet waste line.   
     
     
         10 . The system of  claim 9 , comprising a check valve installed in the cabinet waste line to prevent backflow from the sewer system. 
     
     
         11 . The system of  claim 10 , wherein the check valve is installed downstream of both the cabinet waste line and the sink basin waste line. 
     
     
         12 . The system of  claim 9 , comprising a perforated cap disposed in the collection orifice. 
     
     
         13 . The system of  claim 9 , wherein the collection orifice is a first orifice, the system comprising a second orifice in the drain pan. 
     
     
         14 . The system of  claim 13  wherein the second orifice is configured to receive the sink basin waste line and provide a liquid-tight seal between the drain pan and the sink basin waste line. 
     
     
         15 . The system of  claim 14 , wherein the liquid tight seal comprises a bulkhead. 
     
     
         16 . A sink cabinet drain system comprising:
 a sink cabinet, the cabinet supporting a sink basin;   a faucet configured to direct water into the sink basin;   a supply line configured to supply pressurized water to the faucet, the supply line being routed through the cabinet;   a custom-fit drain pan disposed within the cabinet, beneath both the supply line and the sink basin;
 wherein the drain pan has an upper surface, the upper surface being sloped to drain to a collection orifice; 
   a gravity-drained cabinet waste line configured to collect liquid from the collection orifice and deliver the liquid, via gravity, to a sewer system;   a sink basin waste line, wherein the sink basin waste line is configured to transfer, via gravity, liquid waste from the sink basin to the cabinet waste line; and   a check valve installed in the cabinet waste line to prevent backflow from the sewer system;
 wherein the check valve is installed downstream of both the cabinet waste line and the sink basin waste line. 
   
     
     
         17 . The system of  claim 16 , comprising a perforated cap disposed in the collection orifice. 
     
     
         18 . The system of  claim 16 , wherein the collection orifice is a first orifice, the system comprising a second orifice in the drain pan. 
     
     
         19 . The system of  claim 18  wherein the second orifice is configured to receive the sink basin waste line and provide a liquid-tight seal between the drain pan and the sink basin waste line. 
     
     
         20 . The system of  claim 19 , wherein the liquid tight seal comprises a bulkhead.