Ultrasonic sensing
US4365515A · kind A · utility
13Cited by
20References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 15, 1980 |
| Grant date | Dec 28, 1982 |
| Priority date | — |
| Expiry date | Sep 15, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/02836
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pulse-echo device for obtaining information about a flowing fluid in which a transducer unit comprises an electrically-shielded transducer with a lens for three-dimensionally focusing energy waves, which unit can be inserted into a hole extending through the sidewall of a pipe so that the energy waves focused by the lens are directed across the flow through the pipe. The transducer is surrounded by two electrically-grounded shields which are insulated from each other and separately grounded to isolated the transducer from stray electrical pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.