Automatic light switch with manual override
US8153918B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2009 |
| Grant date | Apr 10, 2012 |
| Priority date | — |
| Expiry date | Jul 15, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H3/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An automatic switch control includes a wheel member having a cam member with a ramp surface. A first plunger mechanism has a first spring member that is operable to urge a first cam follower into sliding engagement with the ramp surface. A second plunger mechanism has a second spring member that is operable to urge a second cam follower into sliding engagement with the ramp surface. The second plunger mechanism is disposed on an opposite side of the toggle from the first plunger mechanism when the automatic switch control is installed over the switch. An electric motor is operable to rotate the cam member to position the first plunger mechanism in a retracted condition and to position the second plunger mechanism in an extended condition that is operable to move the toggle to the on position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.