Device for monitoring escalator handrail speed
US5645156A · kind A · utility
10Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1993 |
| Grant date | Jul 8, 1997 |
| Priority date | — |
| Expiry date | Sep 1, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P3/54
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved escalator 10 which incorporates a device 58 which monitors the speed of an escalator handrail 12. The escalator having a handrail and a transmission unit 14. The device cooperates with a portion of the transmission unit that moves at the same speed as the handrail. Various details are developed which facilitate the monitoring of the handrail speed. In one detailed embodiment, the device includes a plurality of targets 60 and a sensor 62 which is not interfered with by the handrail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.