Vacuum coupled transducer
US4760740A · kind A · utility
13Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1987 |
| Grant date | Aug 2, 1988 |
| Priority date | — |
| Expiry date | Jul 22, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2691
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A vacuum coupled ultrasonic transducer is presented for coupling a transducer to a bolt for ultrasonic measurement of bolt elongation. A central passageway extends through the transducer body, the piezoelectric crystal and a seal element. A vacuum line extends through the central passageway.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.