Timed switch control for electric devices
US6903284B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jul 30, 2003 |
| Grant date | Jun 7, 2005 |
| Priority date | — |
| Expiry date | Jul 30, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G15/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A power switch control unit for controlling the operation of a controlled electric device connected to the unit includes a housing having a timing mechanism therein; a power cord having a plug on one end thereof, for connection to a power supply, and having the housing on the other end thereof, for supplying electrical power to the unit and to a connected-electric device controlled by the power switch control unit, and a receptacle for receiving a power cord from an electric device to be controlled by the power switch control unit; control buttons, including: an on/off button for connecting a controlled electric device to the power supply; a timer activation button for activating the timing mechanism, wherein, when the timing mechanism is activated, it connects a controlled electric device to the power supply for a predetermined amount of time in a timed cycle, and then disconnects the connected-electric device from the power supply; and a clear timer button for terminating the predetermined amount of time, and a display for displaying time remaining in the predetermined period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.