Drive for a freight elevator, in particular for a stair climber for the handicapped
US5641040A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 6, 1995 |
| Grant date | Jun 24, 1997 |
| Priority date | — |
| Expiry date | Oct 6, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B9/0815
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A drive assembly for a freight elevator or a stair climber for the handicapped is guided on at least one supporting waling or spar. A driving strip is disposed on the supporting waling or spar. According to one embodiment, the driving strip has recesses formed therein at equal intervals. A load-receiving configuration has a motor-driven drive wheel and drive elements are adapted to the recesses for form-lockingly engaging the drive wheel with the recesses. According to another embodiment, squared blocks of constant length are secured to the supporting waling or spar at equal spacings. A load-receiving configuration has a motor-driven drive wheel and drive elements are adapted to the spacings of the blocks for form-lockingly engaging the squared blocks with the drive wheel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.