Company Filing History:
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Years Active: 2011-2025
Title: Naoki Umeda: Innovator in Piston and Oil Control Ring Technology
Introduction
Naoki Umeda is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of mechanical engineering, particularly in the design of piston rings and oil control rings. With a total of 4 patents to his name, Umeda's innovations have had a notable impact on engine performance and efficiency.
Latest Patents
Umeda's latest patents include a unique piston ring design. The outer circumferential surface of this piston ring features a cut surface that forms a notched portion between the outer circumferential end surface and a lower surface. This design includes a first surface between the outer circumferential end surface and a bottom portion, and a second surface that is inclined away from the central axis of the piston ring. The angle of inclination of the second surface is between 50° and 85°. Additionally, the axial width of the piston ring is designed to meet specific dimensional criteria.
Another significant patent is for an oil control ring. This oil control ring consists of an oil ring with a pair of land parts connected by a web part, along with a coil expander that biases the oil ring toward the outer circumferential side. The web part is equipped with multiple window holes, and the dimensions of these holes are carefully calculated to optimize performance.
Career Highlights
Throughout his career, Naoki Umeda has worked with notable companies such as TPR Co., Ltd. and Ono Sokki Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects in the automotive industry.
Collaborations
Umeda has collaborated with several talented individuals in his field, including Masayuki Ohira and Akira Hikone. These partnerships have fostered a creative environment that has led to the development of cutting-edge technologies.
Conclusion
Naoki Umeda's contributions to piston and oil control ring technology demonstrate his expertise and innovative spirit. His patents reflect a commitment to enhancing engine performance and efficiency, making him a noteworthy figure in the field of mechanical engineering.