Patents by Inventor Chlh Chen

Chlh Chen 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).

  • Elevator
    Publication number: 20060201749
    Abstract: An elevator is described, comprising a first series connected pulley set installed in a fixing frame, a carriage located below the first series connected pulley set, a second series connected pulley set installed on the top of the carriage, a rotary wheel installed in the carriage and a steel rope. The steel rope connects the first series connected pulley set, the second series connected pulley set and the rotary wheel, so that the gravity load and the pulling force of the steel rope can be deceased to enhance the safety of the elevator.
    Type: Application
    Filed: March 10, 2005
    Publication date: September 14, 2006
    Inventor: Chlh Chen