Patents by Inventor Zhenhua Lü

Zhenhua Lü 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).

  • Drum brakes with interconnected multi-degrees-of-freedom shoes
    Patent number: 7077249
    Abstract: This invention is a new type of drum brake and its variants for motor vehicles, the shoe mechanism assembly of which has at least one set of interconnected shoe mechanism and automatic adjusting mechanism of brake clearance. The interconnected shoe mechanism consists of two interconnected composite shoes of multiple degrees of freedom. Each composite shoe consists of a shoe and a driving lever. The shoe is jointed to the driving lever with a cylindrical pin or a elliptical pin matching with a cylindrical hole or a spherical joint, and the driving lever is pivoted on the backplate of brake with a cylindrical pin or a elliptical pin matching with a cylindrical hole or a spherical joint. The automatic clearance adjusting mechanism is fixed on the backplate and interconnected with the driving lever.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: July 18, 2006
    Assignee: Tsinghua University
    Inventors: Zhenhua Lü, Wenming Han