Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Tined or irregular periphery
Reexamination Certificate
2002-04-08
2004-02-03
Look, Edwark K. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Tined or irregular periphery
Reexamination Certificate
active
06685436
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to blades for ceiling fans and particularly to blades with a hollow interior for ceiling fans.
2. Description of the Prior Art
Conventional ceiling fans generally have solid blades made from plywood or woods. As the blades are solid after finished, they are heavy and require a greater motor power to drive when initially activated for rotation. Blades of reduced weight require less motor power and also can save electricity consumption.
SUMMARY OF THE INVENTION
Therefore the primary object of the present invention is to resolve aforesaid disadvantages. The present invention provides hollow blades for ceiling fans to reduce weight and has built in reinforced means to increase the strength of the blades.
The foregoing, as well as additional objects, features and advantages of the present invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings.
REFERENCES:
patent: 3480373 (1969-11-01), Talbot
patent: 4915588 (1990-04-01), Brackett
patent: 5338156 (1994-08-01), Chien
patent: 5401138 (1995-03-01), Mosiewicz
patent: 5630890 (1997-05-01), Smashey et al.
patent: 6250886 (2001-06-01), Immell et al.
patent: 6402475 (2002-06-01), Chen
patent: 6508627 (2003-01-01), Gerken et al.
Look Edwark K.
McAleenan James M
Rosenberg , Klein & Lee
LandOfFree
Hollow blades for ceiling fans does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hollow blades for ceiling fans, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hollow blades for ceiling fans will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3330363