Concrete elevator rail and guidance system
US6578673B2 · kind B2 · utility
3Cited by
18References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1999 |
| Grant date | Jun 17, 2003 |
| Priority date | — |
| Expiry date | Sep 27, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F17/005
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An integrally poured concrete rail guidance system enables the elimination of traditional metal rails by pouring the concrete rail at the same time as the hoistway is poured. Time and expense is avoided in the construction and the concrete rails are durable. A guidance system is also disclosed
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.