Fluid-pressure elevator
US4830146A · kind A · utility
19Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1987 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Oct 22, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B9/04
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A fluid-pressure elevator comprising an elevator frame for supporting a cage; a fluid pressure cylinder attached to the elevator frame and adapted to vertically move the cage by controlling the rate of charge or discharge of pressure fluid; a rope means for connecting the cage and the plunger of the fluid pressure cylinder to each other while being supported by pulleys attached to upper portions of the elevator frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.