Pop-up valve with seal
US7882578B2 · kind B2 · utility
1Cited by
37References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2005 |
| Grant date | Feb 8, 2011 |
| Priority date | — |
| Expiry date | Dec 3, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03C1/2302
- WIPO fieldCivil engineering
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.