Fan base case
US7168920B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 2004 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Dec 10, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D25/0613
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fan case base, which is for being mounted with a fan wheel having a hub and a plurality of fan blades surrounding the hub, includes a base support, a frame and a plurality of engaging parts. The base support is attached with the fan wheel. The frame is disposed around the periphery of the base support and provides the height thereof less than that of the fan blades. The engaging parts are disposed at the top of the frame for the fan case base being attached to an article and provide the height thereof greater than that of fan blades. The fan case base 2 can provide a best mode of guiding the airflow, enhancing the effect of cushion and shock absorption during the airflow entering the frame 22 and the fan blades 32 of the fan heel 3 not touching the frame 22 even in case of the fan case base 2 being hung vertically.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.