Patents by Inventor Ding Chun Cheng

Ding Chun Cheng 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).

  • Publication number: 20140130989
    Abstract: A window dressing control device includes a housing defining a base, an axially extending hollow cylinder, and an axially extending central shaft, the cylinder and shaft each projecting from the base so as to be substantially parallel and coaxial. The device also includes at least one resilient member between the cylinder and the shaft; a rotatable spool coupled to the housing about the cylinder, and a clutch device mounted on the spool. The resilient member engages the spool and the clutch device, providing a friction brake that bears on the inner wall of the cylinder (or a reinforcing insert within the cylinder) to resist rotation of the spool and clutch.
    Type: Application
    Filed: November 12, 2012
    Publication date: May 15, 2014
    Inventors: Louis Chan, Zhao Jun, Ding Chun Cheng