Patents by Inventor Peifang WU

Peifang WU 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).

  • Fiber-reinforced copper-based brake pad for high-speed railway train, and preparation and friction braking performance thereof
    Patent number: 11852209
    Abstract: The present disclosure relates to a fiber-reinforced copper-based brake pad for high-speed railway train, and preparation and friction braking performance thereof. The fiber-reinforced copper-based brake pad for high-speed railway train comprises 80-98.5 wt. % metal powder, 1-15 wt. % non-metal powder and 0.5-5 wt. % fiber component. In addition, some components are added in a specific proportion to achieve optimal performance. The copper-based powder metallurgy brake pad is obtained by powder mixing, cold-pressing and sintering with constant pressure. The friction braking performance of the obtained brake pad is tested according to a braking procedure consisting of three stages, i.e., the first stage with low-pressure and low-speed, the second stage with high-pressure high-speed and the continuous emergency braking third stage with high-pressure and high-speed.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: December 26, 2023
    Assignees: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING, BEIJING TIANYISHANGJIA NEW MATERIAL CORP., LTD.
    Inventors: Lin Zhang, Xuanhui Qu, Peng Zhang, Peifang Wu, Mingli Qin, Cairang Shijia, Jingwu Cao, Kangxi Fu
  • Fiber-Reinforced Copper-Based Brake Pad for High-speed railway train, and Preparation and Friction Braking Performance Thereof
    Publication number: 20200208701
    Abstract: The present disclosure relates to a fiber-reinforced copper-based brake pad for high-speed railway train, and preparation and friction braking performance thereof. The fiber-reinforced copper-based brake pad for high-speed railway train comprises 80-98.5 wt. % metal powder, 1-15 wt. % non-metal powder and 0.5-5 wt. % fiber component. In addition, some components are added in a specific proportion to achieve optimal performance. The copper-based powder metallurgy brake pad is obtained by powder mixing, cold-pressing and sintering with constant pressure. The friction braking performance of the obtained brake pad is tested according to a braking procedure consisting of three stages, i.e., the first stage with low-pressure and low-speed, the second stage with high-pressure high-speed and the continuous emergency braking third stage with high-pressure and high-speed.
    Type: Application
    Filed: February 18, 2020
    Publication date: July 2, 2020
    Inventors: Lin ZHANG, Xuanhui QU, Peng ZHANG, Peifang WU, Mingli QIN, Cairang SHIJIA, Jingwu CAO, Kangxi FU