Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Distally supported on radial arm
Reexamination Certificate
1999-02-03
2001-06-05
Look, Edward K. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Distally supported on radial arm
C416S005000, C416S206000, C416S22000A, C416S221000
Reexamination Certificate
active
06241475
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a ceiling fan assembly and a method for assembling same, and, more particularly, to such an assembly and method in which the fan blades can be attached to the fan motor relatively easily and quickly using a minimum number of parts.
Rotating fans that are mounted to the ceilings of homes and businesses are very popular. These types of fans consist of an electric motor mounted to the ceiling and a plurality of angularly-spaced blades. The blades are usually mounted to a rotor end casing of the motor by a plurality of mounting arms. However, it is difficult and time-consuming to mount the blades since a relatively large number of fasteners, or the like, are normally used to attach each blade to its corresponding arm, and each arm to the rotor end casing. Since there are usually five blades and arms, the labor costs involved in assembling and mounting the complete fan assembly constitute a very high percentage of the overall cost of the assembly. This difficultly in assembly is compounded by the fact that the rotor end casing of the fan motor is initially mounted to the ceiling, and the above-mentioned arms and blades often have to be mounted to the end casing in its elevated position which is awkward and difficult.
Therefore, what is needed is a fan assembly and a method of assembling same in which the fan blades can be easily and quickly attached to the arms, and the arms can be easily and quickly attached to the rotor end casing of the fan motor, without the use of fasteners, or the like, and even when the end casing is mounted to the ceiling.
SUMMARY OF THE INVENTION
An embodiment of the present invention, accordingly, is directed to a ceiling fan assembly and method for assembling same according to which an arm member having a blade connected thereto is quickly and easily mounted to the rotor end casing member of the fan motor. To this end, a slot is formed in one of the members, and a mounting flange is provided on the other member and is adapted to extend into the slot. A wedge is created between the flange and that portion of the one member defining the slot to secure the arm member to the end casing.
Several advantages result from this arrangement. For example, the use of a multitude of fasteners, such as nuts, bolts and screws, to connect the arm to the end casing, is eliminated. Thus, the fan assembly can be assembled and mounted relatively easily and quickly thus considerably reducing the labor costs.
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Blateri Frank
Chou Wang Liang
Aloha Housewares Co. Ltd.
Haynes and Boone LLP
Look Edward K.
Woo Richard
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