Signaling device for annunciating a status of a monitored person or object
US6693514B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2002 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | May 9, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B5/36
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A signaling device for annunciating in a hallway of a building a status of a monitored person or object is provided. The signaling device includes at least two vertically stacked sections for announcing a status of the monitored person or object with each section announcing a status of a different condition. Each section includes a solid-state, light-emitting device (LED) that is supported such that when the device is mounted to the wall of the hallway a beam of light from the LED is substantially aimed at a wall opposing the wall to which the device is mounted. A pair of opposing planar surfaces extends along diverging planes and is supported over each LED to receive the LED's beam of light. Each of the planar surfaces extends at an angle approximately equal to a characteristic optical beam angle of the beam of light. This arrangement causes light from the light beam to substantially uniformly illuminate an entirety of each of the planar surfaces when viewed from an angle approximately perpendicular to a direction in which the beam of light is aimed. Each of the planar surfaces has an area sufficient to be easily viewed at a location in the hallway remote from where the device is …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.