Ventilator for elevator cage
US5460570A · kind A · utility
9Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1994 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Jan 14, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S454/906
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An elevator cage with an ventilator which has supply system for supplying fresh air into the cage and exhaust system for exhausting air from the cage. An active noise controller is provided to at least the supply system to cancel noise which is caused by a supply fan provided in the supply system and changing air force between the cage and a path to guide the cage while the cage moves at high speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.