Pullable drain plug

Abstract

A pullable drain plug has a cap cover, a sealing disk, at least one center rod, a stopping clamp, a securing ring and a gripping end. The cap cover is provided with a protruding column, the protruding column having a positioning slot corresponding to the sealing disk, a central aperture disposed through the protruding column, the central aperture having a first threaded section at an upper opening and a tapered lower opening with a limiting flange. Each center rod has a main body, each main body has a different length. each main body has a neck portion connected to an enlarged end, and a first threaded portion and a second threaded portion, and the first threaded portion and the second threaded portion has different diameters. The stopping clamp is an elastic member and is C-shaped. The gripping end has a second threaded section and a containment space.

What is claimed is: 
     
         1 . A pullable drain plug comprising a cap cover, a sealing disk, at least one center rod, a stopping clamp, a securing ring and a gripping end; wherein:
 the cap cover is provided with a protruding column, the protruding column having a positioning slot corresponding to the sealing disk, a central aperture disposed in the cap cover through the protruding column, the central aperture having a first threaded section at an upper opening and a tapered lower opening with a limiting flange;   each center rod has a main body, each main body having a different length, each main body having a neck portion connected to an enlarged end, and a first threaded portion and a second threaded portion sequentially disposed at another end, the first threaded portion and the second threaded portion having different diameters;   the stopping clamp is an elastic member and is C-shaped; and   the gripping end has a second threaded section and a containment space open at a bottom face;   wherein with the above-mentioned structure, the stopping clamp and the securing ring are sequentially disposed in the central aperture of the cap cover, the limiting flange supports the stopping clamp and the securing ring such that the stopping clamp and the securing ring are limited by the cap cover; the at least one center rod is placed through the securing ring to make the main body of the center rod pass through the central aperture and extend out from the cap cover, and the neck portion engages with the stopping clamp;   wherein when the gripping end engages with the cap cover via the first and second threaded sections, the securing ring and the stopping clamp are limited by the gripping end.   
     
     
         2 . The pullable drain plug as claimed in  claim 1 , wherein the pullable drain plug is configured for a drain of a tub, a sink or other fluid collecting device. 
     
     
         3 . The pullable drain plug as claimed in  claim 1 , wherein the main body further comprises a tapered portion prior to the first threaded portion and the second threaded portion. 
     
     
         4 . The pullable drain plug as claimed in  claim 1 , wherein the pullable drain plug further comprises a securing disk and a plurality of the sealing disks. 
     
     
         5 . The pullable drain plug as claimed in  claim 4 , wherein the securing disk has a threaded aperture, a plurality of drain holes and an engaging slot for engaging with the sealing ring, and wherein each sealing ring is a solid circular body having an inner diameter and an outer diameter, a difference between the respective inner and outer diameters of the sealing rings being different from each other.