Fabric fan blades
US7648339B1 · kind B1 · utility
15Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2005 |
| Grant date | Jan 19, 2010 |
| Priority date | — |
| Expiry date | Jun 13, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2300/601
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Cloth or fabric fan blades self-inflate when rotated about an axis to produce air movement, the blades being secured to a fan hub which is in turn connected to a fan motor assembly that provides the rotational force to inflate the blades, the blades collapsing upon contact with any object for safety purposes, the innovative blades being lightweight and safe such that no fan guard is required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.