Nobuo Motoda

Title: Nobuo Motoda: Rotary Compressor Innovation.

Introduction

Nobuo Motoda is an inventor associated with Kariya, Japan, and Nippon Soken, Inc. His patent work includes an improvement to rotary compressor design intended to reduce torque loss and strengthen movable vanes against breakage.

Latest Patents

The provided information identifies one patent for Motoda: “Rotary Compressor with Clearance Between Movable Vanes and Slits of the Rotor.” The invention describes a cylindrical housing containing a rotor with diametrically extending slits and movable vanes that slide within those slits while contacting the housing’s inner surface.

The design increases clearance between each vane and its slit near the rotor’s central portion compared with the clearance near its outer periphery. This is achieved by making the vanes thinner at their centers or by making the slits wider in that region. The arrangement is intended to suppress shearing stresses caused by oil, reduce compressor torque loss, and keep maximum stress on the vanes below an allowable level, improving their resistance to breakage. Motoda is credited with 1 patent in the information provided.

Career Highlights

Motoda’s listed patent reflects work on mechanical engineering and compressor performance. The record associates him with Nippon Soken, Inc., and places his professional activity in Kariya, Japan.

Collaborations

The provided information names Kenji Takeda and Mitsuo Inagaki as Motoda’s coworkers. Their specific roles in the patent or related work are not stated.

Conclusion

Nobuo Motoda’s documented invention addresses stress, durability, and torque efficiency in rotary compressors through carefully varied clearances between movable vanes and rotor slits.