Hydraulic elevator without a machineroom
US6378660B1 · kind B1 · utility
8Cited by
3References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1997 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Sep 1, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B9/04
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A hydraulic elevator system having a configuration without a machineroom is disclosed. The hydraulic elevator system includes a valve assembly that is separated and remotely located from the pump and fluid tank. This arrangement permits the valve assembly and an electronic controller to be located in a cabinet outside of the hoistway, and the other hydraulic components, such as a tank and pump, to be located in the hoistway.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.