Shigeru Okamura

Title: Shigeru Okamura: Innovator in Chain and Oil Tensioning Technologies

Introduction

Shigeru Okamura is a notable inventor based in Zushi, Japan. He has made significant contributions to the field of mechanical engineering, particularly in the development of oil tensioners and chain tensioners. With a total of 2 patents to his name, Okamura's innovations have enhanced the functionality and reliability of power transmission mechanisms.

Latest Patents

One of Okamura's latest patents is an oil tensioner with a bell-shaped oil filter. This innovative device is designed to apply a tensile force to chains, belts, and similar wrapping type power transmitting mechanisms. The tensioner features an oil reservoir that stores oil drawn from an engine block to a cylinder of a piston via a check valve. The oil is then returned to the reservoir through an orifice, allowing the piston to move more readily in one direction than the other. The bell-shaped oil filter, located adjacent to the bottom of the reservoir, effectively filters out chips and dust while controlling the rate of oil outflow. This design prevents air from being drawn into the cylinder with the oil, ensuring smooth oil flow and minimizing potential damage to components.

Another significant patent by Okamura is a chain tensioner. This device comprises a body that fits into a bore formed through a side wall of a chain case, featuring a generally cylindrical portion. A plunger is slidably received in the cylindrical portion to press a timing chain. The body includes a check valve, and a damping chamber is defined by the cylindrical portion and the plunger, which is fluidly connected to an oil pump via an oil supply passage. The oil reservoir is defined by the bore and the body, allowing for effective communication with the damping chamber through the check valve and a flow restrictor.

Career Highlights

Throughout his career, Shigeru Okamura has worked with prominent companies such as Nissan Motor Company Limited and Tsubakimoto Chain Company. His experience in these organizations has allowed him to refine his skills and contribute to the advancement of mechanical technologies.

Collaborations

Okamura has collaborated with talented individuals in the industry, including Kimitsugu Kiso and Yuichi Futami. These partnerships have fostered innovation and the sharing of ideas, further enhancing the development of his inventions.

Conclusion