Rooftop exhaust fan having a mechanism for locking the fan in an open position
US11454417B2 · kind B2 · utility
0Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2019 |
| Grant date | Sep 27, 2022 |
| Priority date | — |
| Expiry date | Dec 11, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F2221/22
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a rooftop exhaust fan that is pivotally mounted to a curb or other support structure and which, in response to pivoting the exhaust fan from a closed position to an inclined open position, the exhaust fan is automatically locked in the inclined open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.