Elevator system having a flat belt with wedge-shaped ribs
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United States of America Patent
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Jul 20, 2010
Grant Date -
Apr 19, 2007
app pub date -
Dec 27, 2004
filing date -
Jan 6, 2004
priority date (Note) -
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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.
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