Intercom unit for providing a status alert for a movable barrier
US8675838B2 · kind B2 · utility
4Cited by
8References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2006 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | Mar 29, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2009/00928
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An access control system is provided for a movable barrier. A main communication unit grants access to a movable barrier operator. The movable barrier operator controls movement of the movable barrier. A remote communication unit has an input device to receive an access request and to transmit a corresponding access signal to the main communication unit and to transmit a status indication to the main communication unit in response to detecting a predetermined event.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.