Drive pulley for elevators and method of manufacture thereof
US8109850B2 · kind B2 · utility
5Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2004 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | Apr 20, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B15/04
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A drive pulley for elevators, with at least two sectors, wherein at least one sector is hardened and at least one sector is not hardened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.