This inventor holds 18 USPTO granted patents and 7 EPO patents, primarily in Hydraulic Control Systems. Top assignee: Kobelco Construction Machinery Co., Ltd.. Active years: 2003-2019.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2003-2019
Areas of Expertise:
Title: Innovations of Hidekazu Oka in Hydraulic Drive Technology
Introduction
Hidekazu Oka is a prominent inventor based in Hiroshima, Japan, known for his significant contributions to hydraulic drive technology. With a total of 18 patents to his name, Oka has made remarkable advancements in the field of construction machinery.
Latest Patents
One of Oka's latest patents is a hydraulic drive apparatus for construction machines. This innovative apparatus is designed to prevent cavitation while improving regeneration efficiency. It features a regenerative motor that regenerates energy from hydraulic fluid discharged from a slewing motor. The system includes a first regeneration tank line that returns regeneration discharge fluid to a tank through a back pressure valve, and a second regeneration tank line that allows fluid to bypass the back pressure valve. A regeneration-tank-line selector valve and a control section are also included to optimize fluid flow during operation.
Another notable patent is for a construction machine equipped with a working attachment. This machine includes a hydraulic pump, a boom, and a boom cylinder, along with a fluid-supplied cylinder. The design incorporates first and second operation devices, control valves, a flow-rate-limiting section, and an anti-cavitation circuit. The fluid-supplied cylinder receives fluid from the hydraulic pump, and the system is engineered to manage pressure effectively during operation.
Career Highlights
Oka has dedicated his career to enhancing the efficiency and functionality of construction machinery through innovative hydraulic systems. His work at Kobelco Construction Machinery Co., Ltd. has positioned him as a key figure in the industry, contributing to the development of advanced machinery that meets modern construction demands.
Collaborations
Throughout his career, Oka has collaborated with talented individuals such as Yutaka Toji and Naoki Sugano. These partnerships have fostered a creative environment that has led to the successful development of numerous patents and innovations.
Conclusion
Hidekazu Oka's contributions to hydraulic drive technology have significantly impacted the construction machinery industry. His innovative patents reflect a commitment to improving efficiency and performance in construction applications. Oka's work continues to inspire advancements in hydraulic systems, showcasing the importance of innovation in engineering.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile