公开(公告)号：US10670043B2

公开(公告)日：2020-06-02

申请号：US15776904

申请日：2016-06-27

申请人： Po-Kung Lo

发明人： Po-Kung Lo

IPC分类号： F04D29/36 ,  F04D25/08 ,  F04D29/38

摘要： A folding and unfolding structure of blade of a ceiling fan includes a driving device, a rotary member, multiple connection arms, multiple fixed arms, multiple extension arms, multiple elastic members and multiple blades. The rotary member rotates synchronously with the driving device. One end of the connection arm is connected to the rotary member, and the other end of the connection arm is pivotably connected to one end of an extension arm by a first pivot. One end of the fixed arm is connected to a blade, and the other end of the fixed arm is pivotably connected to the other end of an extension arm by a second pivot. The elastic members are provided between the extension arms and the connection arms to restricting outward expansion of the extension arms, such that the extension arms are pivoted upward about the first pivots and move close to the rotary member.

公开(公告)号：US20190219063A1

公开(公告)日：2019-07-18

申请号：US15776904

申请日：2016-06-27

申请人： Po-Kung Lo

发明人： Po-Kung Lo

IPC分类号： F04D29/36 ,  F04D29/38 ,  F04D25/08

摘要： A folding and unfolding structure of blade of a ceiling fan includes a driving device, a rotary member, multiple connection arms, multiple fixed arms, multiple extension arms, multiple elastic members and multiple blades. The rotary member rotates synchronously with the driving device. One end of the connection arm is connected to the rotary member, and the other end of the connection arm is pivotably connected to one end of an extension arm by a first pivot. One end of the fixed arm is connected to a blade, and the other end of the fixed arm is pivotably connected to the other end of an extension arm by a second pivot. The elastic members are provided between the extension arms and the connection arms to restricting outward expansion of the extension arms, such that the extension arms are pivoted upward about the first pivots and move close to the rotary member.

公开(公告)号：USD818105S1

公开(公告)日：2018-05-15

申请号：US29588866

申请日：2016-12-23

申请人： Po-Kung Lo

设计人： Po-Kung Lo