# US 8,782,886 B2 · Method for making a ceiling fan blade

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- Number: US 8,782,886 B2
- Document ID: US8782886B2
- Status: Granted
- Kind: B2
- Application number: 13/552,351
- Filed: 2012-07-18
- Published: 2014-01-23
- Granted: 2014-07-22
- Earliest claimed: 2012-07-18
- Applicants: Hsien-Chin Liao
- Inventors: Hsien-Chin Liao
- Web page: https://patentgrep.com/patent/US8782886B2

## CPC

- F04D 25/088: {Ceiling fans}
- F04D 29/388: {characterised by construction}
- Y10T 29/49327: Axial blower or fan
- Y10T 29/49337: Composite blade
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A method for making a ceiling fan blade comprises the steps of cutting, inside drying, surface wetting, surface spraying, and surface forming. The method is capable of reducing production cost and loss rate, reducing the harm to human health, preventing environmental pollution, and preventing the ceiling fan blades from perishing and deformation by dehydrating the ceiling fan blades.

## Claims

### Claim 1

A method for making a ceiling fan blade comprising:
cutting a wood board into a plurality of raw fan blades;
hanging the raw fan blades and heating the raw fan blades with infrared rays generated from an infrared generator at a temperature ranging 100-200° C. for 1-3 minutes, so as to drive moisture inside the raw fan blades to a surface of each of the raw fan blades;
putting the raw fan blades into a steam room for 10-20 seconds, so as to wet the surface of the raw fan blades;
spraying thermosetting powder on the surface of the raw fan blades with a sprayer, so that the thermosetting powder melts and sticks to the surface of the raw fan blades when wet by the moisture on the surface of the raw fan blades, so as to form an unsolidified layer on the surface of the fan blades; and
heating the raw fan blades with the infrared rays generated from an infrared generator at a temperature ranging 100-150° C. for 1-2 minutes, so as to solidify the unsolidified layer into a solidified layer.

### Claim 2 (depends on 1)

The method for making a ceiling fan blade as claimed in claim 1, wherein the wood board is selected from a group consisting of dense board, solid wood, bamboo board, and plywood.

### Claim 3 (depends on 1)

The method for making a ceiling fan blade as claimed in claim 1, wherein the thermosetting powder is selected from the group consisting of hydroxyl group polyester resin, carboxylic group polyester resin, acid anhydride, phenol resin, aromatic amine, aliphatic amine.