Patents by Inventor Shuichi Masuzoe

Shuichi Masuzoe 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).

  • Patent number: 7588124
    Abstract: A speed control method of an elevator-purpose comprising previously calculating an elevating distance in such a case that the elevator passenger car is decelerated from a reference frequency up to a leveling frequency in a constant deceleration speed, when the induction motor is stopped. The elevator passenger car is driven in a constant speed at an intermediate frequency so that the previously calculated distance becomes equal to an elevating distance when the elevator passenger car is decelerated at the constant deceleration speed from an arbitrary frequency up to the leveling frequency so as to adjust the elevating distance. The elevator passenger car is automatically decelerated at the constant deceleration speed up to the leveling frequency.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: September 15, 2009
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventor: Shuichi Masuzoe
  • Publication number: 20070187186
    Abstract: In order to improve comfortable conditions of an elevator passenger car which are deteriorated by changes in gravity and vibrations since the elevator passenger car is rapidly decelerated, a speed control method and a speed control apparatus are provided which are capable of increasing floor arriving precision even when a set value of an arbitrary frequency is changed.
    Type: Application
    Filed: December 16, 2004
    Publication date: August 16, 2007
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventor: Shuichi Masuzoe
  • Patent number: D450305
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: November 13, 2001
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventors: Shuichi Masuzoe, Makoto Kojyo