Hiratsuka, Japan

Yoshio Oomachi

This inventor holds 1 USPTO granted patent. Top assignee: Kabushiki Kaisha Komatsu Seisakusho. Active years: 1978.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshio Oomachi. Retrieved from https://idiyas.com/inventor/yoshio-oomachi

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 4.0

ph-index = 1

Forward Citations = 4(Granted Patents)


Company Filing History:


Years Active: 1978

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1 patent (USPTO):Explore Patents

Title: Yoshio Oomachi and His Electromagnetic Bucket Positioner

Introduction

Yoshio Oomachi is an inventor associated with Hiratsuka, Japan, and Kabushiki Kaisha Komatsu Seisakusho, commonly known as Komatsu. His recorded patent concerns a mechanism for controlling a loader vehicle’s bucket position.

Latest Patents

Oomachi is credited with 1 patent: “Electromagnetic Bucket Positioner for Loader Vehicles.” The invention uses an electromagnet to latch a bucket system’s directional control valve when the operator moves the control lever to the rack-back position. A normally closed electric switch opens in response to selected movement of a hydraulic cylinder’s piston rod, cutting power to the electromagnet and releasing the lever. A spring device also helps the operator move the lever out of the rack-back position when needed.

Career Highlights

The patent reflects Oomachi’s work on loader vehicle controls, particularly a system designed to hold and release the bucket control lever through coordinated electrical and hydraulic components. His recorded company affiliation is Komatsu.

Collaborations

Masataka Uno and Yoshitaka Nishimura are identified as Oomachi’s coworkers.

Conclusion

Yoshio Oomachi’s recorded invention combines electromagnetic latching, hydraulic movement, and spring assistance to support controlled bucket positioning in loader vehicles.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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