Axial flow fan
US6196802A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 27, 1998 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Oct 27, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/263
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An axial flow fan having impeller blade section fixed in a rotor of a motor where shaft supporting the rotation of the rotor is fitted to intermediate fastening section, and boss, which holds the synthetic resin fan with fan blades, surrounds and firmly connects the intermediate fastening section. The shaft is made from metal, and this allows a secure press fit with the metal intermediate fastening section. The neck joining the intermediate fastening section and the boss has a through hole for the shaft to pass and supporting arms project between boss and intermediate fastening section. In addition, the connecting sections between the shaft and the intermediate fastening section, and the boss and the intermediate fastening section may be knurled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.