Elevator car call buttons indicating car floor position
US5969306A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1998 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Mar 26, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B1/462
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Registered car calls are indicated in the car call buttons of an elevator car operating panel by illuminating one of the car call buttons with a first illumination characteristic, and the floor position of the elevator car within the building is indicated by illuminating any of the same car call buttons with a second illumination characteristic, different from the first illumination characteristic. One part of the car call button (such as the center) may be used to indicate registered car calls and another part of the car call button (such as the ring) may be used to indicate car position (or vice versa). Registered car calls may be indicated by steady or invariant illumination from the car call button while car position is indicated by illuminating the appropriate car call button with flashing illumination. Colors may also be used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.