Service line access system
US4869281A · kind A · utility
9Cited by
15References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1987 |
| Grant date | Sep 26, 1989 |
| Priority date | — |
| Expiry date | Nov 25, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/598
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Process and apparatus for plugging or plugging and servering gas service lines may be deployed from a building without requiring access to either the utility service main or main tee connections. The processes are intended to be undertaken while gas is being supplied to the service. The apparatus also allows service lines to be relined under these conditions without requiring direct access to either the utility service main or main tee connections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.