Doorbell system
US12198533B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2021 |
| Grant date | Jan 14, 2025 |
| Priority date | — |
| Expiry date | Jun 19, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B1/08
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Provided is a doorbell system, including an indoor terminal, an outdoor terminal, and a power supply (100). The indoor terminal includes a bell controller (220) and an indoor bell (210) which are connected in parallel; the outdoor terminal includes an outdoor doorbell (310) and an outdoor switch (320); the indoor terminal, the outdoor terminal, and the power supply (100) are connected in series to form a closed loop; in response to the outdoor switch (320) being switched off, the bell controller (220) is turned on, the indoor bell (210) is short-circuited, and the power supply (100) powers the outdoor doorbell (310); and in response to the outdoor switch (320) being switched on, the bell controller (220) is turned off, and the power supply (100) powers the indoor bell (210).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.