Piezoelectric audible signal with spring contacts and retaining and spacer ring
US8724833B1 · kind B1 · utility
36Cited by
20References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2012 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Dec 28, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2400/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A piezoelectric audible signal that has at least two, frusto-conical, coil spring conductors extending between and in unsoldered electrical connection with, at one end, different contact pads on the printed circuit board and, at their opposite ends, the piezoelectric disk. A retaining and spacer ring is interposed between the disk and the printed circuit board and has at least two, frusto-conically shaped, spring retaining cavities that matingly receive the spring conductors in a manner that retains the spring conductors against movement away from the printed circuit board when the ring is attached to the printed circuit board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.