Cam operated inverter bypass safety switch
US5721449A · kind A · utility
14Cited by
24References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 20, 1996 |
| Grant date | Feb 24, 1998 |
| Priority date | — |
| Expiry date | Feb 20, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/0066
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inverter by pass safety switch for rerouting electrical power either through or around AC variable frequency inverter drives during electrical disturbances, thus allowing a motor to continue operation. The switch works in a mechanical fashion, and comprises a contact block containing electrical contacts and cams operably connected to the contacts and mounted on a shaft that can be turned by an operator. The cams are shaped and mounted on the shaft in such a way to provide a desired switching pattern when the shaft is manually rotated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.