Apparatus for detecting an irregularity in the frequency of steps passing a particular point within a passenger conveying device
US5361887A · kind A · utility
9Cited by
6References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1994 |
| Grant date | Nov 8, 1994 |
| Priority date | — |
| Expiry date | Mar 14, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B29/005
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An apparatus for detecting an irregularity in the frequency of steps passing a particular point within a passenger conveying device is provided, comprising an apparatus for sensing the presence of an axle attached to the step without contacting the axle or a roller attached thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.