The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2020
Filed:
May. 09, 2014
Lg Electronics Inc., Seoul, KR;
Sang Yuk Son, Changwon-si, KR;
Kyung Jung Lee, Changwon-si, KR;
LG ELECTRONICS INC., Seoul, KR;
Abstract
A method of manufacturing a centrifugal fan is provided that includes cutting a metal sheet to form a positive pressure surface forming member and a negative pressure surface forming member, respectively, forming a positive pressure surface and a negative pressure surface; pressing the positive pressure surface forming member and the negative pressure surface forming member to form a first curved surface forming the positive pressure surface and a second curved surface forming the negative pressure surface; trimming the positive pressure surface forming member provided with the fast curved surface and the negative pressure surface forming member provided with the second curved surface to form a shroud bonding surface and a main plate bonding surface; bending the shroud bonding surface and the main plate bonding surface; bonding the positive pressure surface forming member and the negative pressure surface forming member to each other; and bonding the shroud bonding surface and a shroud to each other and bonding the main plate bonding surface and a main plate to each other in a bonded state of the positive pressure surface forming member and the negative pressure surface forming member.