Self-powered switching device
US6630894B1 · kind B1 · utility
33Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2000 |
| Grant date | Oct 7, 2003 |
| Priority date | — |
| Expiry date | Jan 8, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S20/14
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A self-powered switching device using a prestressed flextensional electroactive member generates a signal for activation of a latching relay. The electroactive member has a piezoelectric element with a convex and a concave face that may be compressed to generate an electrical pulse. The flextensional electroactive member and associated signal generation circuitry can be hardwired directly to the latching relay or may be coupled to a transmitter for sending an RF signal to a receiver which actuates the latching relay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.