US 11,719,252 B2
Fan
Yu-Ming Lin, New Taipei (TW); Wen-Neng Liao, New Taipei (TW); Cheng-Wen Hsieh, New Taipei (TW); Chun-Chieh Wang, New Taipei (TW); Han-Liang Huang, New Taipei (TW); Sheng-Yan Chen, New Taipei (TW); and Tsung-Ting Chen, New Taipei (TW)
Assigned to Acer Incorporated, New Taipei (TW)
Filed by Acer Incorporated, New Taipei (TW)
Filed on Mar. 8, 2022, as Appl. No. 17/688,910.
Claims priority of application No. 110108972 (TW), filed on Mar. 12, 2021.
Prior Publication US 2022/0290684 A1, Sep. 15, 2022
Int. Cl. F04D 29/28 (2006.01); H05K 7/20 (2006.01); F04D 29/30 (2006.01)
CPC F04D 29/281 (2013.01) [F04D 29/305 (2013.01); H05K 7/20172 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A fan, adapted for being disposed in an electronic device, wherein the fan comprises:
a hub; and
a plurality of metal blades respectively extending from the hub, wherein each of the metal blades has a root portion connected to the hub and an end portion away from the hub, and in each of the metal blades, a mass of the end portion is greater than a mass of the root portion, such that the metal blade is elongated while the fan is rotated, wherein the metal blade has a weighting portion and has a windward surface and a leeward surface opposite to each other, and the weighting portion is located on the leeward surface and connected to the end portion.