Elevator without a machine room
US6691833B1 · kind B1 · utility
18Cited by
27References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2000 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | Jan 27, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/288
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator has a car that moves along at least one guiderail in a hoistway and the car is supported by at least one suspension rope that is driven by a drive unit. The drive unit has a drive motor that rotates rope sheave over which the suspension rope passes. The drive unit is located in an upper section of the hoistway and projects over at least part of the car. To assure safe access to the drive unit when the dimensions of the hoistway are efficiently minimized, the car has a closable opening in the roof through which the drive unit is accessible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.