Patents by Inventor Shigemi Fujisawa

Shigemi Fujisawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Powdery particle conveying system and roots blower operating method
    Patent number: 7114889
    Abstract: A powdery particle conveying system is provided in which electric power consumption can be saved when powdery particles are conveyed by use of a roots blower. In the case where the powdery particles are conveyed to a reservoir tank near the roots blower, the frequency of a power source of a roots blower driving motor is reduced, thereby reducing an output of the roots blower. In contrast, in the case where the powdery particles are conveyed to a remote reservoir tank, a voltage of a commercial frequency is applied to the motor.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: October 3, 2006
    Assignee: Nisshin Seifun Group Inc.
    Inventors: Osamu Kanou, Yoshinori Miyashita, Shigemi Fujisawa, Yoshiaki Hamada, Yoshio Nakada, Akihiro Tanaka, Hiroomi Uehara
  • Powdery particle conveying system and roots blower operating method
    Publication number: 20030185636
    Abstract: A powdery particle conveying system is provided in which electric power consumption can be saved when powdery particles are conveyed by use of a roots blower. In the case where the powdery particles are conveyed to a reservoir tank near the roots blower, the frequency of a power source of a roots blower driving motor is reduced, thereby reducing an output of the roots blower. In contrast, in the case where the powdery particles are conveyed to a remote reservoir tank, a voltage of a commercial frequency is applied to the motor.
    Type: Application
    Filed: March 25, 2003
    Publication date: October 2, 2003
    Applicant: Nisshin Seifun Group Inc.
    Inventors: Osamu Kanou, Yoshinori Miyashita, Shigemi Fujisawa, Yoshiaki Hamada, Yoshio Nakada, Akihiro Tanaka, Hiroomi Uehara
  • Jet air flow crusher
    Patent number: 4824030
    Abstract: A jet air flow crusher has a guide face formed by the inside surface of an outer wall in which a flat and almost ellipsoidal internal space is defined to guide an ellipsoidal gas phase flow powder grains; a crushing zone in which flowing powder grains are crushed provided on one side of the internal space in the direction of the ellipsoidal major axis; a classifying zone at which flowing powder grains are discharged provided on the other side of the internal space in the direction of the ellipsoidal major axis; a gas phase flow passage defined in the crushing zone by the inside surface of the outer wall and a partition wall; nozzles installed in the outer wall and the partition wall at several locations in the direction of the powder grain flow in the crushing zone to jet out air in a direction substantially corresponding to the powder grain flow for carrying and crushing the powder grains, and flow resisting means for limiting the gas phase flow carrying the powder grains, arranged at least at one location b
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: April 25, 1989
    Assignees: Nisshin Flour Milling Co., Ltd., Nisshin Engineering Co., Ltd.
    Inventors: Osamu Kano, Yukiyoshi Yamada, Shigemi Fujisawa, Masayuki Yasuguchi