Pipe cleaning and plugging apparatus
US4202377A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1978 |
| Grant date | May 13, 1980 |
| Priority date | — |
| Expiry date | Nov 3, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/124
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An apparatus for plugging a pipeline through a side opening and arranged such that the sealing portion may be removed and a rotary brush substituted to effect initial cleaning of pipeline should that be desired. The apparatus includes a bell-type housing which is arranged for mounting over the side opening in a pipeline to form a fluid tight chamber therewith so that the cleaning and plugging operation can be carried out while fluid pressure is present in the pipeline. The apparatus includes a drive stem which extends into the chamber through a ball and socket coupling provided in the upper part of the housing which permits articulation of the drive stem. The drive stem has supported on the lower end thereof a plug assembly which is adapted for insertion into the pipeline for effecting the seal. The plug assembly includes an annular cup-shaped seal having an annular lip which is sized for easy insertion into the pipeline at a point axially adjacent to the side opening. The plug assembly includes an annular member which is arranged to deflect the lip portion of the seal radially outwardly into initial sealing engagement with the pipe upon contact of the annular member therewith. Bei…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.