| 摘要 |
The ceiling fan of the present invention has at least one locking mechanism, i.e., rotor brake, that may be an integral subsystem of the ceiling fan, or an add on attachment kit, either of which holds the fan rotor stationary to prevent the fan blades from rotating during cleaning or other maintenance of the fan. The rotor brake may comprise an electrically actuated mechanical system that prevents rotation of the rotor. Alternatively, the rotor brake may comprise an electrically actuated electromagnetic field to prevent rotation of the rotor. In yet another embodiment, the rotor brake may comprise a retractable or pivotal yoke that attaches to the fan so that the yoke may extend or pivot to engage a stationary fan blade or blade iron to prevent the blades from rotating. The yoke may be operated by a switch, a pull chain, or manually.
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