Independent backup power supply for a security barrier
US6920718B2 · kind B2 · utility
13Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2003 |
| Grant date | Jul 26, 2005 |
| Priority date | — |
| Expiry date | Apr 3, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01F13/048
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system is disclosed for providing a backup power supply for a security gate system. In a preferred embodiment it includes a primary power supply, an AC motor and an auxiliary DC motor that share the same accessory devices including controller, movement mechanism, sensors, communication unit, etc. The auxiliary DC motor has its own independent DC power supply. If the primary power supply fails the auxiliary power supply takes over and moves the barrier between the open and closed positions as needed without interruption of service.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.