Method of checking the presence of a pipeline connection between two end points
US5144839A · kind A · utility
4Cited by
6References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 10, 1990 |
| Grant date | Sep 8, 1992 |
| Priority date | — |
| Expiry date | Sep 10, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B17/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The presence of pipeline connections can be checked by the transmitting of acoustic signals from a transmitter to an acoustic sensor within the pipe. This method is used in particular in the manufacture of cigarettes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.