This inventor holds 1 USPTO granted patent and 1 EPO patent. Top assignee: Hitachi Construction Machinery. Active years: 2026.
Company Filing History:
Years Active: 2026
Title: Hiroto Oohira - Innovator in Work Machine Technology
Introduction
Hiroto Oohira is an inventor based in Kasumigaura-shi, Japan. He has made significant contributions to the field of work machines, focusing on innovative designs that enhance functionality and efficiency. Although he currently holds no granted patents, his work reflects a deep understanding of mechanical systems and their applications.
Latest Patent Applications
Hiroto Oohira's notable patent application is for a work machine that includes a main circuit supplying a working fluid from a pump to an actuator. The design features a pilot circuit that introduces part of the working fluid to a pilot pressure receiving section of a control valve. Additionally, it incorporates a bleed-off passage connecting the pump and a tank. The pilot circuit is equipped with a first pressure reducing valve that generates a pilot primary pressure, along with second and third pressure reducing valves that create a pilot secondary pressure for the control valve and a bleed-off valve. The design also includes a spool of the bleed-off valve with a first moving area for stepwise changes in the restrictor's opening area and a second moving area for continuous changes. A controller manages the third pressure reducing valve to position the spool appropriately during both operation and non-operation of the actuator.
Conclusion
Hiroto Oohira's innovative approach to work machine technology showcases his potential as an inventor. His patent application reflects a commitment to advancing mechanical systems, even in the absence of granted patents. His contributions may pave the way for future developments in this field.