Patents by Inventor Yung-Chen Chung

Yung-Chen Chung has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Concealed type lifting control mechanism for venetian blind
    Patent number: 6575223
    Abstract: A concealed type lifting control mechanism installed in a Venetian blind and adapted to control lifting of the lift cord of the Venetian blind comprises at least two take-up reel sets that provide a predetermined spring release force and are connected to the lift cord to impart a roll-up prestress to the lift cords for taking up the lift cords, a synchronizing transmission unit coupled to the at least two take-up reel sets for enabling the at least two take-up reel sets to be work synchronously, and a positioning device set provided between the take-up reel sets and moved between an engagement position and a release position to determine the provision of the roll-up prestress, for enabling the lift cords to be moved to adjust the Venetian blind to the desired elevation.
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: June 10, 2003
    Assignees: Industrial Technology Research Institute, Nien Made Enterprise Co., Ltd.
    Inventors: Yung-Chen Chung, Ya-Wei Hsu, Chin Cheng Chen