Blade for ceiling fan
A blade of a ceiling fan includes a first flat end fixed to a blade bracket and a second end which includes an activation portion which includes a convex protruding from a top of the second end of the blade and a concavity is defined in an underside of the activation portion. Two sides of the activation portion are on a common horizontal surface with the first end of the blade. An angle between the horizontal surface and the convex is in a range of 15° to 20°. The blade generates stronger airflow with less resistance.
The present invention relates to a blade of a ceiling fan and the blade includes an activation portion on a distal end thereof so as to generate stronger airflow with lower resistance.
BACKGROUND OF THE INVENTION A conventional fan blade 10 for a ceiling fan is shown in
The present invention intends to provide a blade for ceiling fans wherein the blade generates stronger amount of airflow while only limited resistance needs to be overcome.
SUMMARY OF THE INVENTIONThe present invention relates to a blade of a ceiling fan and the blade comprises a first end which is a flat board so as to be fixed to a blade bracket, a second end of the blade has an activation portion. The activation portion is a convex protruding from a top of the second end of the blade and a concavity is defined in an underside of the activation portion. Two sides of the activation portion are on a common horizontal surface with the first end of the blade and an angle between the horizontal surface and the convex is in a range of 15° to 20°.
The primary object of the present invention is to provide a blade of a ceiling fan and the blade includes an activation portion on a distal end thereof so as to generate stronger airflow with less resistance.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
Referring to FIGS. 1 to 4, the ceiling fan blade 10 of the present invention comprises a first end 11 which is a flat board and includes a plurality of holes 110 so as to be fixed to a blade bracket 20 as shown in
When the blades 10 are rotated, the activation portion 120 results preferred airflow so as to generate stronger airflow with less resistance when compared with the conventional fan blades While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
Claims
1. A blade of a ceiling fan, comprising:
- a first end which is a flat board and adapted to be fixed to a blade bracket, a second end of the blade having an activation portion which is a convex protruding from a top of the second end of the blade and a concavity defined in an underside of the activation portion, two sides of the activation portion being on a common horizontal surface with the first end of the blade, an angle between the horizontal surface and the convex being in a range of 15° to 20°.
Type: Application
Filed: Jul 8, 2005
Publication Date: Jan 11, 2007
Inventor: Mao-Lin Huang (Fengyuan City)
Application Number: 11/176,384
International Classification: F04D 29/38 (20060101);