Driving device for displacing an element in a conduit filled with liquid
US4378051A · kind A · utility
10Cited by
10References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1980 |
| Grant date | Mar 29, 1983 |
| Priority date | — |
| Expiry date | Dec 19, 2000 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The device, which is connected to an element to be displaced, comprises a tubular body surrounded by sleeves which are inflated to a diameter slightly smaller than the diameter of the conduit. A motor-pump assembly located in the tubular body provides for the circulation of the fluid through the body so as to cause propulsion of the device within the conduit. Sensors may control automatic operation of the device and inflation of the sleeves to the selected diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.