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Ceiling fan

a fan and fan blade technology, applied in the direction of non-positive displacement fluid engines, vessel construction, marine propulsion, etc., can solve the problems of affecting the rotation of the fan blades during operation, potentially dangerous situation for someone attempting to clean or repair the fan, and potentially troublesom

Inactive Publication Date: 2007-02-15
FEDELI CHRISTINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008] 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, i.e., freewheeling during cleaning or other maintenance of the fan.
[0009] The rotor brake may comprise an electrically actuated mechanical system that prevents rotation of the rotor. Alternatively, the rotor brake may comprise an electrically ac

Problems solved by technology

The dust is unattractive at the least, and if the dust particles collect in the fan bearings, the rotation of the fan blades during operation may be hindered.
This creates a potentially troublesome and possibly dangerous situation for someone attempting to clean or repair the fan and its blades.

Method used

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Embodiment Construction

[0022] The present invention is a ceiling fan 105a having a locking mechanism, i.e., rotor brake designated generally as 10a in FIG. 1. As shown in FIGS. 1, 8A and 9, the ceiling fan generally operates by applying alternating current (AC) to stator windings 805 which are affixed to a section of stator shaft 110 inside housing 14 and disposed in such a manner as to provide a rotating magnetic field. A metal, substantially cylindrical rotor 115 is disposed proximate to and concentric to the stator so that the rotor 115 can respond to the rotating magnetic field by following the. field, i.e., rotating with the field. Outside of the housing 14, a rotor extension in the form of a central hub 16a is attached to the rotor 115 and also to fan blades 12. Thus the rotary motion of rotor 115 is transferred through the central hub in order to impart rotary motion to the fan blades 12.

[0023] As shown in FIG. 1, rotor brake 10a for the ceiling fan is preferably an integral subsystem of the ceili...

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PUM

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Abstract

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.

Description

CROSS-REFERENCE TO RELATED APPLICATION [0001] This application claims the benefit of U.S. Provisional Patent Application Ser. No. 60 / 706,448, filed Aug. 9, 2005.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to ceiling fans. More specifically, the invention relates to a ceiling fan having one or more mechanisms for preventing rotation of the ceiling fan rotor during blade cleaning or other ceiling fan maintenance activity. [0004] 2. Description of the Related Art [0005] Ceiling fans are used in many homes to circulate the air in rooms in an economical manner. The fans are often ornamental, matching the furniture and interior decoration. Over time, the fan blades accumulate a layer of dust sediment, particularly on their leading edges, caused by cutting through the dust-filled air. The dust is unattractive at the least, and if the dust particles collect in the fan bearings, the rotation of the fan blades during operation may be hinde...

Claims

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Application Information

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IPC IPC(8): B63H15/00
CPCF04D25/088
Inventor FEDELI, CHRISTINEFEDELI, ANTHONY JR.
Owner FEDELI CHRISTINE