Elevator system having a flat belt with wedge-shaped ribs
US7757817B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 27, 2004 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | Sep 27, 2025 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD07B2501/2007
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention relates to a lift system wherein a drive unit (2) drives, by means of a driving disk (4.1), a flat belt-type carrier means (12.1, 12.2) which carries the lift cage (3). Said flat belt-type carrier means comprises several ribs (20.1, 20.2) which extend in a parallel manner in a longitudinal direction of the carrier means on a bearing surface which is orientated towards the driving disk (4.1) and each rib comprises at least two traction carriers (22) which are orientated in a longitudinal direction of the carrier means. The whole cross-sectional surface of all the traction carriers (22) is at least 25% of the cross-section surface of the carrier means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.