Lighting control device
US5248919A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1992 |
| Grant date | Sep 28, 1993 |
| Priority date | — |
| Expiry date | Mar 31, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/185
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting control device for controlling the state and intensity level of at least one lamp. The device includes a user-actuatable intensity selector for selecting a desired intensity level between a minimum intensity level and a maximum intensity level, a control switch for generating control signals representative of preselected states and intensity levels of the lamp in response to an input, and a control responsive to the intensity selector and the control switch for causing the lamp to fade from an off state to the desired intensity level when the input from a user from a user causes a single switch closure of transitory duration, such fade occurring at a first fade rate, fade from any intensity level to the maximum intensity level when the input from a user comprises two switch closures of transitory duration in rapid succession, such fade occurring at a second fade rate, and fade from the desired intensity level to an off state when the input from a user comprises a single switch closure of more than a transitory duration, such fade occurring at a third fade rate, each of such fade rates being non-instantaneous.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.