Equipment for ascertaining the position of a rail-guided elevator car with a code carrier
US6886667B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2003 |
| Grant date | May 3, 2005 |
| Priority date | — |
| Expiry date | Nov 26, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B1/3492
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Position transmitting equipment for ascertaining the position of a rail-guided elevator car includes a code carrier, which is arranged over the car travel path in fixed location on a guide rail with code marks of different permeability. A permanently precise reading of the coding is ensured by the fact that the code carrier is fixedly connected with a non-magnetic cover externally covering the code marks. The code carrier together with the outwardly facing non-magnetic cover are inserted into a receiving groove of the car guide rail, whereby a simple and reliable mounting is achieved and, in addition, temperature-dependent differences in expansion between the code carrier and the guide rail are avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.