This inventor holds 4 USPTO granted patents. Top assignee: Sanden Corporation. Active years: 1990-1998.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Maebashi, JP (1990 - 1996)
- Isesaki, JP (1998)
Company Filing History:
Years Active: 1990-1998
Title: Innovations of Toshiyuki Teshigawara
Introduction
Toshiyuki Teshigawara is a notable inventor based in Maebashi, Japan. He has made significant contributions to the field of motor technology, holding a total of four patents. His work primarily focuses on advancements in brushless motors and their control systems.
Latest Patents
One of Teshigawara's latest patents is an "Apparatus and method for driving and controlling brushless motor." This invention involves a brushless DC motor with three-phase stator windings and a permanent-magnet rotor. The motor is driven on a DC voltage through a three-phase electronic switching circuit. The back EMF voltages across the stator windings are individually phase-delayed and compared with a common sawtooth-wave comparator reference voltage. This voltage has a frequency proportional to the current rotor speed and an amplitude centered at half of the motor driving DC voltage. A drive control unit, which is a microcomputer, transmits switching control signals to the switching circuit in sequential driving steps based on the three-phase output signals of the comparators. This allows for effective commutation of the motor drive voltage in a first motor driving mode. The invention also includes a method of making a cylindrical ferromagnetic body and cover assembly for a rotor of a DC motor. This method involves compressing a blend of powdered ferromagnetic material and a heat-curable binder into a cylindrical form within a non-magnetic cover material. The process ensures that the ferromagnetic body adheres firmly to the cover material during molding.
Career Highlights
Teshigawara is currently employed at Sanden Corporation, where he continues to innovate in the field of motor technology. His work has been instrumental in enhancing the efficiency and performance of brushless motors.
Collaborations
He has collaborated with notable coworkers, including Naoto Sato and Tadashi Miyazawa, contributing to various projects and advancements in their field.
Conclusion
Toshiyuki Teshigawara's contributions to motor technology through his patents and work at Sanden Corporation highlight his role as a significant inventor in this domain. His innovations continue to influence the development of efficient motor systems.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile