Company Filing History:

13 out of 42,508

Hitachi, Ltd.

Aida Engineering, Ltd.

patents

where one patent can have more than one assignee

Years Active: 1981-1989

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13 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4829206 - Armature for an electric rotary machine and method of manufacturing the (1989-05-09),

2. 4644850 - Fluid machine (1987-02-24),

3. 4541315 - Inside chuck device for machine tools (1985-09-17),

4. 4392296 - Method of joining two metal members (1983-07-12),

5. 4377762 - Rotary electric machine rotor and a method of manufacturing the same (1983-03-22),

6. 4376333 - Method of joining members of metal by forced insertion (1983-03-15),

7. 4370793 - Method of coupling two metallic members (1983-02-01),

8. 4339873 - Method of making rotor of rotary machines (1982-07-20),

9. 4335496 - Method of coupling two concentrically disposed members (1982-06-22),

10. 4325678 - Hydraulic pressure producing system for a hydraulic press (1982-04-20),

11. 4290295 - Method of making V-grooved pulley assembly (1981-09-22),

12. 4253323 - Method for manufacturing high precision slugs (1981-03-03),

13. 4249298 - Method for connecting two members (1981-02-10),

Title: Innovator Spotlight: Akira Tohkairin

Introduction

Akira Tohkairin, a talented inventor based in Katsuta, Japan, has made significant contributions to technology, particularly in the field of electric rotary machines and fluid machines. With a remarkable portfolio of 13 patents, Tohkairin's innovations demonstrate a keen understanding of complex mechanical systems.

Latest Patents

Among his latest patents is an innovative design for an armature used in electric rotary machines. This invention features a laminated iron core equipped with multiple slots and teeth that are strategically arranged on the core’s cylindrical surface. Tohkairin’s design includes windings placed within these slots, secured by anchors formed through the deformation of the teeth's end portions. This method enhances stability during operation while effectively managing the windings.

In addition, Tohkairin has developed a sophisticated fluid machine. This machine comprises a cylinder block positioned on a rotary shaft, which is coupled with an angled rotary plate that interacts with a gear engagement mechanism. The design enables a piston to be inserted into a through-hole within the cylinder block, facilitating efficient suction and delivery through a sophisticated rotation system. Notably, a spherical contact portion is incorporated, designed to manage thrust through a high-pressure working gas mixture that includes lubricating oil.

Career Highlights

Akira Tohkairin has enriched his expertise by working with renowned companies in the industry, including Hitachi, Ltd. and Kawamura Co., Ltd. His practical experience in these environments has undoubtedly influenced his innovative thinking and patent development.

Collaborations

Throughout his career, Tohkairin has collaborated with notable coworkers, including Hisanobu Kanamaru and Hideo Tatsumi. Engaging with such experts has likely provided valuable insights and fostered an environment of creativity and innovation.

Conclusion

Akira Tohkairin's commitment to innovation and his impressive portfolio of patents mark him as a significant figure in the field of technology. His advancements in electric rotary machines and fluid machines exemplify the potential of creative solutions in engineering. Through his collaborations and contributions, Tohkairin continues to inspire the next generation of inventors and engineers.

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