Elevator
US7225902B2 · kind B2 · utility
3Cited by
5References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 12, 2004 |
| Grant date | Jun 5, 2007 |
| Priority date | — |
| Expiry date | Jul 12, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B11/0226
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In an elevator apparatus, a car that is raised and lowered within a hoistway has a car frame and a cage supported on the car frame. Chamfered portions are provided at corner portions of the cage. The car frame has vertical columns arranged along the chamfered portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.