This inventor holds 6 USPTO granted patents and 1 published patent application. Top assignees: Gm Global Technolgoy Operations, Inc., Schaeffler Technologies Ag & Co .Kg. Active years: 2007-2024.
Company Filing History:
4 out of 31,820 
2 out of 3,795 
Years Active: 2007-2024
Title: The Innovative Contributions of Jean Sieffert
Introduction
Jean Sieffert is a notable inventor based in Lingolsheim, France. He has made significant contributions to the field of engineering, particularly in the development of vibration dampers and pulley decouplers. With a total of 6 patents to his name, Sieffert's work has had a considerable impact on the automotive industry.
Latest Patents
One of Sieffert's latest patents is a vibration damper made up of spoke spring absorbers. This innovative design features at least two absorbers, each equipped with at least one spoke spring, which allows for efficient damping of the frequency response of a crankshaft. The absorbers are designed with different natural frequencies that are tailored to the crankshaft's frequency response. Notably, the frequency response of these absorbers is minimally affected by aging of the spoke springs and ambient temperature, making them reliable and easy to install.
Another significant patent is the pulley decoupler featuring a centrifugal pendulum device with a first friction device. This pulley decoupler is designed for an accessory drive and includes input and output parts that can rotate about a common axis. The centrifugal pendulum device is crucial for damping torsional vibrations, utilizing a centrifugal pendulum flange with at least one pendulum mass that is influenced by centrifugal force. This design enhances the functionality and efficiency of the accessory drive system.
Career Highlights
Throughout his career, Jean Sieffert has worked with prominent companies such as Gm Global Technology Operations, Inc. and Schaeffler Technologies AG & Co. KG. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects.
Collaborations
Sieffert has collaborated with talented individuals in his field, including Vincent Holtz and Regis Casteran. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.
Conclusion
Jean Sieffert's contributions to engineering and innovation are noteworthy, particularly in the realm of vibration dampers and pulley decouplers. His patents reflect a commitment to enhancing the efficiency and reliability of automotive systems. Through his work and collaborations, Sieffert continues to influence the industry positively.