Lockbox key with callback feature
US7880584B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2006 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Apr 9, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2209/61
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An access device is provided for a system that has a plurality of locks that are each configured to receive instructions and to energize a lock mechanism to unlock the lock and a computer that is disposed at a remote location from the locks and that is connected to a primary wireless communication path. The access device includes at least one key configured for communicating with the computer via the primary wireless communication path and to communicate with the locks over a secondary wireless path. The at least one key is also configured to send a predefined text message for receipt by the computer and wherein the predefined text message provides an indication to the computer as to at least one other key whereto the predefined text message is to be sent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.