Fan and rotor structure thereof
US7438531B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2004 |
| Grant date | Oct 21, 2008 |
| Priority date | — |
| Expiry date | May 17, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/611
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fan and a rotor structure thereof. The rotor structure has a case, an upper linking structure, a lower structure, and a rotating shaft. The case has an opening at the axle center. The upper linking structure has a fixing portion and a threaded portion. The minimum radius of the fixing portion is longer than the radius of the opening. The threaded portion is disposed in the opening. The lower linking structure has a thread corresponding to the threaded portion. The upper linking structure and the lower linking structure is screwed together to secure the case therebetween. The rotating shaft is fixed in the upper linking structure or the lower linking structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.