Drip stop plug
US5318075A · kind A · utility
Inventor
Key dates
| Filing date | Sep 13, 1993 |
| Grant date | Jun 7, 1994 |
| Priority date | — |
| Expiry date | Sep 13, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/11
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A water soluble drip stop plug for stopping water flow in a pipe and for dissolving after a predetermined time after water flow is restored. The plug is a cup shaped water soluble plug which has tapered sides to fit snugly into the inside diameter of pipes. The end wall of the plug is designed to dissolve in a predetermined time after contact with fluids. The end wall of the plug has a different wall thickness than the side wall of the plug. A preferred embodiment has an end wall with a portion of reduced wall thickness which allows it to break away quicker than the remainder of the end wall. Additionally, the drip stop plug may have reinforced side walls to provide support for plugs of larger diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.