Ultrasonic particulate sensing
US4237720A · kind A · utility
17Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 7, 1978 |
| Grant date | Dec 9, 1980 |
| Priority date | — |
| Expiry date | Aug 7, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/3375
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pulse echo device with a concave transmitter-receiver surface located to direct ultrasonic energy to a focal point spaced therefrom transversely of a conduit, the focal point being a distance transversely of the conduit less than twice the thickness of the conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.