Displacement safety system for electrical charging stations
US9368959B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Sep 6, 2012 |
| Grant date | Jun 14, 2016 |
| Priority date | — |
| Expiry date | Nov 16, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A safety circuit for disconnecting the power feed to an EV (electrical vehicle) charging enclosure or gasoline station fuel pump enclosure in the event that the enclosure is partially or totally dislodged from the foundation and dangerously high voltage has been exposed due to underground conduits being torn apart and electrical cables being exposed and in contact with sheet metal cabinets and other metal parts, thus creating the possibility of an explosion or the electrocution of a user or bystanders. The safety circuit comprises at least two proximity sensors, each of which transmits a signal into a control circuit which causes the power feed to the enclosure to be disconnected at the source when either or both of the proximity sensors inform the control circuit that the station has moved either vertically or horizontally more than a few thousandths of an inch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.