Location History:
- Hitachinaka, JP (2012 - 2016)
- Tokyo, JP (2016)
Company Filing History:
4 out of 42,496 
2 out of 2,028 
1 out of 1,504 
Years Active: 2012-2016
Title: Innovations of Itsuro Sawada
Introduction
Itsuro Sawada is a notable inventor based in Hitachinaka, Japan. He has made significant contributions to the field of electric machinery, holding a total of 7 patents. His work primarily focuses on enhancing the performance and efficiency of electric rotating machines and generator motors.
Latest Patents
Among his latest patents is a generator motor designed to uniformly cool down armature windings along the circumferential direction of a stator. This innovative generator motor features a stator fixed to the inner diameter side of a housing, with a rotor that is rotatably supported by bearings. The armature windings are wound around the teeth of a stator core. Each bracket provided via the bearings has a passage through which cooling oil flows, along with injection holes that communicate with the passage. These holes inject cooling oil at positions opposite to the winding ends of the armature windings. The design ensures that the flow rate of the oil from any injection hole is greater when the position of the injection hole is higher above the level of the shaft. Additionally, the arrangement pitch among the injection holes is denser in the upper portion of the bracket and gradually sparser closer to the level of the shaft.
Another significant patent is for an electric rotating machine that boasts high cooling performance. This machine includes a rotor that rotates around a rotational axis and a stator that faces the circumferential surface of the rotor. The stator consists of a core with a cylindrical back and a plurality of teeth extending radially. A stator coil is wound around the teeth in a concentrated manner, utilizing an insulation material. A spacer with electric insulation performance is attached between the stator coils, which have a coefficient of linear expansion greater than that of the stator core.
Career Highlights
Throughout his career, Itsuro Sawada has worked with prominent companies such as Hitachi, Ltd. and Hitachi Automotive Systems, Ltd. His experience in these organizations has contributed to his expertise in electric machinery and innovation.
Collaborations
Some of his notable coworkers include Tadashi Osaka and Sachio Sekiya. Their collaboration has likely fostered an environment of innovation and creativity in their respective projects.
Conclusion
Itsuro Sawada's contributions to the field of electric machinery through his patents and career achievements highlight his role as a significant inventor.