Elevator driven by a flat linear motor
US5086881A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1991 |
| Grant date | Feb 11, 1992 |
| Priority date | — |
| Expiry date | Mar 15, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B11/0407
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator is driven by a linear motor having an elongated flat secondary element disposed in parallel to a hoistway and extending along the length thereof, the secondary element being supported by an edge portion thereof by a support. The linear motor has a first primary element disposed on one side of the flat secondary element, and a second primary element disposed on the other side of the flat secondary element. A housing supports each primary element adjacent a face of the secondary element. The housing has an opening through which the support of the secondary element passes. The housing includes a counterweight assembly disposed at either end thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.