Digital wiring device

• US 8,786,137 B2
• Filed: 09/11/2009
• Issued: 07/22/2014
• Est. Priority Date: 09/11/2009
• Status: Active Grant

• Current Assignee: Leviton Manufacturing Company Incorporated
• Original Assignee: Leviton Manufacturing Company Incorporated
• Inventors: Chou, Cheng-Lung, Soccoli, Paul, Klamer, David, Duckworth, Paul, Stannis, Gordon, Faasen, Joel Van
• Primary Examiner(s): Le, Tung X
• Application Number:
  US12/558,335
• Publication Number:
  US 20110062896A1
• Time in Patent Office: 1,775 Days
• Field of Search: 307/140, 307/141, 307/116, 307/117, 315/362, 315/360
• US Class Current: 307/116
• CPC Class Codes: G04G 15/006 for operating at a number of different times cigar or cigarette receptacles or boxes with means for limiting the frequency of smoking A24F15/005
• CPC Class Codes: H01H 2300/03 Application domotique, e.g. for house automation, bus connected switches, sensors, loads or intelligent wiring
• CPC Class Codes: H05B 47/16 by timing means
• CPC Class Codes: H05B 47/18 via data-bus transmission
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y04S 20/14 Protecting elements, switches, relays or circuit breakers

Abstract

A digital wiring device including a user interface panel, a digital display, and a paddle including a transparent portion to reveal the digital display and an opaque portion to cover the user interface panel. The paddle rotates from a first closed position to a second open position. A digital “schedule-at-a-glance” may be provided so that a user can quickly assess a schedule of events. The digital wiring device may include a back light to illuminate the digital display. The paddle may be operatively associated with the back light. A battery may provide an electrical current to power the digital wiring device in a battery backup mode, and the back light may be disabled based on the mode. The user interface panel may be used to schedule events or otherwise configure the digital wiring device.

Claims

1. A digital wiring device configured to be mounted in a single-gang electrical box, comprising:

a digital display;

a power input configured to receive power from an electrical supply in a normal power mode and to provide power to the digital display;

a detection circuit configured to detect a power loss of the electrical power supply;

a battery configured to provide power to the power input of the digital wiring device in a battery backup mode based on the detection of the power loss such that the display remains active; and

a back light operable separate from the display to illuminate at least a portion of the digital display, wherein the back light is disabled in the battery backup mode.

2. The digital wiring device of claim 1, further comprising at least one programmable instruction, wherein the battery backup mode prevents loss of the at least one programmable instruction.

3. The digital wiring device of claim 2, wherein the battery has a battery life and the disablement of the light extends the battery life.

4. The digital wiring device of claim 1, wherein the light is enabled when the digital wiring device is in the normal power mode.

5. The digital wiring device of claim 1, further comprising a paddle including a window, wherein the light is configured to illuminate at least a portion of the digital display and reveal at least a portion of the digital display through the window of the paddle when the digital wiring device is in the normal power mode and the paddle is pressed by a user.

6. The digital wiring device of claim 1, further comprising a paddle, wherein the light is configured to illuminate at least a portion of the digital display when the digital wiring device is in the normal power mode and the paddle is opened by a user.

7. The digital wiring device of claim 1, further comprising one or more actuators, wherein the light is configured to illuminate at least a portion of the digital display when the digital wiring device is in the normal power mode and responsive to an actuation of the one or more actuators by a user.

8. The digital wiring device of claim 1, wherein the digital wiring device is configured to be mounted in a single-gang electrical box where the single-gang electrical box has nominal dimensions of not greater than three inches by two inches.

9. The digital wiring device of claim 1, wherein the digital wiring device is a digital timer.

10. A method for preserving at least one programmable instruction in the event of a power loss of a digital wiring device mountable in a single-gang electrical gang box, comprising:

detecting a power loss from an electrical supply;

switching a power input of the digital wiring device from a normal power mode to a battery backup mode using power from a battery; and

disabling a back light of a digital display and continuing to operate the digital display in the battery backup mode.

11. The method of claim 10, wherein disabling the light extends the life of the battery.

12. The method of claim 10, wherein disabling the light of the digital display further comprises disabling the light of the digital display when the digital wiring device is in the battery backup mode.

13. The method of claim 10, further comprising enabling the light of the digital display when the digital wiring device is in the normal power mode.

14. The method of claim 10, further comprising preventing the light from illuminating at least a portion of the digital display when the digital wiring device is in the battery backup mode.

15. The method of claim 10, further comprising illuminating at least a portion of the digital display and revealing at least a portion of the digital display through a window of a paddle when the digital wiring device is in the normal power mode and the paddle is pressed by a user.

16. The method of claim 10, further comprising illuminating at least a portion of the digital display and revealing at least a portion of the digital display when the digital wiring device is in the normal power mode and the paddle is opened by a user.

17. The method of claim 10, further comprising illuminating at least a portion of the digital display when the digital wiring device is in the normal power mode and a user presses one or more actuators of a user interface panel associated with the digital wiring device.

18. The method of claim 10, wherein the device is configured to be mounted in a single-gang electrical box where the single-gang electrical box has nominal dimensions of not greater than three inches by two inches.

19. The method of claim 10, wherein the digital wiring device is a digital timer.