Non-contact elevator call button
US6161655A · kind A · utility
22Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1998 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | Dec 23, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B1/465
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator call button transmits infrared radiation into the space adjacent an elevator, and a call request is recognized by infrared radiation reflected from a potential passenger to an infrared receiver. Thus not only is contact with the button not required, the use of a finger or like-sized object is not required in order to place a call.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.