Fan blade mounting system
US8727732B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2010 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Mar 20, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D25/088
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A ceiling fan (10) is disclosed having a motor housing (11) suspended through a downrod (12). An electric motor (13) is mounted within the housing which drives an annular array of blade irons (14) each having a blade (15) mounted thereto. Each blade has three clearance or mounting hole (16) and a resilient annular grommet (17) is positioned within each mounting hole. Each blade iron (14) has a blade mounting portion (23) with a peripheral seat (23)′ and three blade fasteners (24). Each blade fastener is configured to pass through the fastener mounting hole and grommet. Each fastener has a neck (25) with an annular groove (26), and a head (27) having a diameter larger than that of the neck. The head is positioned directly adjacent the groove so that contact between the head and the grommet forces a portion of the grommet into the annular groove.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.