Acoustic transducer, transducerized fastener and method of manufacture
US5461923A · kind A · utility
13Cited by
15References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 16, 1994 |
| Grant date | Oct 31, 1995 |
| Priority date | — |
| Expiry date | May 16, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/02827
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved acoustic transducer, transducerized fastener and method of manufacture are presented wherein a piezoelectric crystal and a contact/retaining button assembly are permanently attached to a fastener. The contact/retaining button assembly has an insulator board sandwiched between upper and lower electrodes, with at least one plated thru-hole for electrical contact between the electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.