Drain plug
US4794654A · kind A · utility
9Cited by
12References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 17, 1987 |
| Grant date | Jan 3, 1989 |
| Priority date | — |
| Expiry date | Sep 17, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47K1/14
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The sealing stopper has a lid (1) which is set onto a sealing part (2) with a conical sealing surface (8), leaving an annular space (15). At the bottom side of the lid rim (11) is a protrusion with a hemispheric recess, into which an end segment (4) of a chain (3) is set. In this manner, the latter is directly and tightly fastened to the sealing body and has no protruding parts on its upper side which could interfere with use of the stopper in the drain valve of a bathtub.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.