Intelligent door plate and chime
US7053757B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2001 |
| Grant date | May 30, 2006 |
| Priority date | — |
| Expiry date | Mar 19, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B3/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system in operable communication with a doorbell chime for audio annunciation of a visitor to an occupant of a room in a multiple room building, the system configured to indicate a status of the room to the visitor or occupant, the system comprising: a switch assembly configured to convey a message outside of the room; the switch assembly operable from inside the room; an indicating assembly in operable communication with the switch assembly, the indicating assembly configured to indicate the message when the message is selected, the message viewable from inside and outside of the room; and a doorbell button in operable communication with the doorbell chime, the doorbell button operably connected with the indicating assembly and operable from outside of the room by the visitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.