Method for unclogging a pipe carrying dangerous substances
US5198037A · kind A · utility
3Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 1991 |
| Grant date | Mar 30, 1993 |
| Priority date | — |
| Expiry date | May 14, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
So as to unclog a pipe (16) carrying dangerous and accessible substrances after the removal of a movable member (24, 26), this member is replaced by a guiding member (42), a hydraulic shuttle (66) then being introduced into this guiding member, this shuttle being connected to a high pressure hydraulic source (70) through a box (56) equipped with means for washing the shuttle at the time the latter is withdrawn and means for recovering effluent. The shuttle is then conditioned in a winder connected directly on the box (56).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.