Invention Grant
- Patent Title: Pop-up valve with seal
- Patent Title (中): 弹簧阀带密封
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Application No.: US11141887Application Date: 2005-06-01
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Publication No.: US07882578B2Publication Date: 2011-02-08
- Inventor: Keping Li , Pingsheng Yao
- Applicant: Keping Li , Pingsheng Yao
- Applicant Address: CN Xiamen
- Assignee: Xiamen Lota International Co., Ltd.
- Current Assignee: Xiamen Lota International Co., Ltd.
- Current Assignee Address: CN Xiamen
- Agency: McDermott Will & Emery LLP
- Main IPC: E03C1/23
- IPC: E03C1/23
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.
Public/Granted literature
- US20060273278A1 Pop-up valve with seal Public/Granted day:2006-12-07
Information query
