Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Pingsheng Yao0
Keping Li0
Date of Patent
February 8, 2011
0Patent Application Number
111418870
Date Filed
June 1, 2005
0Patent Primary Examiner
Patent abstract
A pop-up valve, comprising an internally threaded screw nut, and positioned in a circumjacent manner around a cylindrical waste drain pipe. A complementary, externally threaded screw bolt, is threadably engageable with the screw nut, and also circumjacent the cylindrical waste drain pipe. A seal element is positioned on the screw nut, and is vertically movable towards the bottom of a sink, as a result of corresponding vertical movement of the screw bolt.
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