Elevator apparatus
US7316296B2 · kind B2 · utility
1Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 9, 2003 |
| Grant date | Jan 8, 2008 |
| Priority date | — |
| Expiry date | Dec 9, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B11/008
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In an elevator apparatus, a first driving machine having a first drive sheave and a second driving machine having a second drive sheave are disposed in an upper portion of a hoistway. A car and first and second counterweights are suspended inside the hoistway by a main rope body wound around the first and second drive sheaves. The car and the first and second counterweights are raised and lowered inside the hoistway by a driving force from the first and second driving machines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.