Location History:
- Heilongjiang, CN (2012 - 2015)
- Qiqihar, CN (2014 - 2020)
Company Filing History:
3 out of 14 
2 out of 10 
1 out of 1 Years Active: 2012-2020
Title: Innovations of Shifeng Xu in Railway Technology
Introduction
Shifeng Xu is a notable inventor based in Qiqihar, China, recognized for his contributions to railway technology. He holds a total of six patents, showcasing his innovative approach to improving railway freight car bogies and related systems. His work has significantly impacted the efficiency and reliability of railway transportation.
Latest Patents
One of Shifeng Xu's latest patents is for a railway freight car bogie. This invention includes a side frame, a bolster, and a friction damper. The friction damper is designed with a wedge, a constant friction damping spring, a variable friction damping spring, and an ejector rod. The unique arrangement of the variable friction damping spring allows for an ideal relative friction coefficient in both unloaded and loaded conditions. This design enhances the vertical and transverse dynamics performance of the bogie, ensuring better operational efficiency.
Another significant patent involves a swing bolster and a swing bolster vibration reduction assembly. This invention features a body with mounting cavities for friction blocks at both ends. The design minimizes wear between the friction block and the swing bolster, thereby improving the vibration reduction performance of the bogie in an unloaded state. This innovation ensures the reliability and effectiveness of the swing bolster in railway applications.
Career Highlights
Shifeng Xu has worked with prominent companies in the railway industry, including Qiqihar Railway Rolling Stock Co., Ltd. and CRRC Qiqihar Rolling Stock Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in railway technology.
Collaborations
Throughout his career, Shifeng Xu has collaborated with esteemed colleagues, including Zhenming Liu and Haibin Hu. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and enhances the development of innovative solutions in railway engineering.
Conclusion
Shifeng Xu's contributions to railway technology through his patents and collaborations highlight his role as a significant inventor in the field. His innovative designs continue to improve the performance and reliability of railway systems, making a lasting impact on the industry.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.