Sink drain extension

Abstract

A sink drain extension for allowing the use of the drain or for a connected disposal to disperse water or other liquids and solid waste material when the sink within which the disposal and drain are disposed is filled with a usable quantity of water or other liquid without commingling the waste material with the usable water or other liquid. The extension is formed from an upstanding hollow member having one end engaging the sink drain and a second free end. A stabilizing member connects with the drain engaging end of the hollow member to secure that end and the hollow member in a substantially fixed position with the drain and prevent relative movement between the hollow member and the sink drain. Appropriate supporting elements are used to seal the drain opening with respect to the extension and to further restrain the tubular member from movement. A strainer may be employed with the extension, and an alternative location for the extension may be utilized along the sink periphery.

What is claimed is:  
     
         1 . A sink drain extension for introducing substances into the sink drain while the sink retains a usable quantity of water comprising: an upstanding hollow member having a first sink drain engaging end and a second free end; a drain engaging member having a first end covering the sink drain and a second end cooperatively nesting within the hollow member sink drain engaging end; an annular sleeve encircling the upstanding hollow member and engaging the sink drain along the sink ledge; a flexible sleeve encircling and engaging the hollow member sink drain engaging end and contiguous with the drain engaging member first end; an outer tubular member engaging the upstanding hollow member and moveable with respect thereto to urge the annular sleeve against the flexible sleeve and sink drain to enhance the seal and support of the sink drain extension against the sink drain and hold the drain extension in a substantially fixed position:  
     
     
         2 . The extension as claimed in  claim 1  wherein the upstanding hollow member first sink drain engaging end and the drain engaging member are fixedly secured to each other.  
     
     
         3 . The extension as claimed in  claim 1  wherein the upstanding hollow member and the outer tubular member are secured one to the other.  
     
     
         4 . The extension as claimed in  claim 1  further comprising: a tubular insert connected with the hollow upstanding member free end.  
     
     
         5 . The extension as claimed in  claim 1  further comprising: means for fixedly securing the hollow member sink engaging end to the drain engaging member.  
     
     
         6 . The extension as claimed in claimed in  claim 2  wherein the upstanding hollow member and the outer tubular member are threadably secured one to the other.  
     
     
         7 . The extension as claimed in  claim 2  further comprising: a tubular insert slidably connected with the hollow upstanding member free end.  
     
     
         8 . The extension as claimed in  claim 7  wherein the tubular insert has a plurality of adjustment steps formed therein and the upstanding hollow member has a plurality of engaging fingers cooperatively engaging with the adjustment steps to secure the tubular insert to the hollow member.  
     
     
         9 . The extension as claimed in  claim 8  wherein the adjustment steps are a plurality of grooves formed in the tubular insert.  
     
     
         10 . The extension as claimed in  claim 8  wherein the engaging fingers are a plurality of upwardly extending members formed in the hollow upstanding member free end.  
     
     
         11 . The extension as claimed in  claim 9  wherein the engaging fingers are a plurality of upwardly extending members formed in the hollow upstanding member free end.  
     
     
         12 . The extension as claimed in  claim 8  further comprising: an adjusting ring cooperatively associated with the engaging fingers and the adjustment steps to releasably secure the hollow member to the tubular insert.  
     
     
         13 . The extension as claimed in  claim 7  wherein the adjustment ring engages the upstanding hollow member when the upstanding member is connected to the tubular insert.  
     
     
         14 . The extension as claimed in  claim 8  further comprising: an adjusting ring cooperatively associated with the engaging fingers and the adjustment steps to releasably secure the hollow member to the tubular insert wherein the adjustment steps are a plurality of grooves formed in the tubular insert and the engaging fingers are a plurality of upwardly extending members formed in the hollow upstanding member second free end.  
     
     
         15 . The extension as claimed in  claim 14  wherein the adjusting ring has a threaded interior surface and the hollow member has a threaded exterior surface in the second free end.  
     
     
         16 . The extension as claimed in  claim 15  wherein the adjusting ring is a ring encircling the location where the hollow upstanding member joins the tubular insert.  
     
     
         17 . The extension as claimed in  claim 16  wherein the adjustment steps and the engaging fingers are further secured to each other by the adjusting ring encircling the location where the adjusting steps meet the engaging fingers.