Blast fan
US10837345B2 · kind B2 · utility
0Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2017 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | Nov 22, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2250/711
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A blast fan includes: a tubular frame having a first opening and a second opening to pass airflow through between the first opening and the second opening. The first opening has a first reverse tapered portion expanding from inside to outside of the frame, and the first reverse tapered portion has a surface having first convex portions projecting to the inside of the frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.