Patents by Inventor Masaji Iida

Masaji Iida 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: 9022842
    Abstract: An elevator apparatus includes an elevator car; an air blower including an air inlet and an air outlet; ducts each having one end individually connected to the elevator car, the air inlet and the air outlet; intake and exhaust air volume adjusting means having the other end of each of the ducts connected thereto, which adjusts an intake and exhaust volume of air in the elevator car by varying a volume of air that bypasses the car to flow from the air outlet to the air inlet of the air blower; and control means that controls the intake and exhaust air volume adjusting means, to adjust air pressure within the car to set air pressure. The elevator apparatus adjusts air pressure within the elevator car, even when there is a small differential pressure between the set air pressure within the car and an air pressure outside the car.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: May 5, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Makoto Tanishima, Shinji Nakashima, Keigo Yamamoto, Masaji Iida
  • Patent number: 9017153
    Abstract: It is an object to ease discomfort feeling caused by ear fullness for passengers of an elevator. An air pressure control device 104 controls an air pressure in an elevator car 102 using an air pressure adjusting device 105 such as a blower, an air compressor, etc. In the air pressure control device 104, a departure/arrival control unit 121 largely changes the air pressure in the elevator car 102 in the first period which is a time zone at the time of departing from a departure floor (or at the time of arriving at an arrival floor), and an except departure/arrival control unit 122 slightly changes the air pressure in the elevator car 102 in the subsequent second period (or in a time period until arrival). By this 2-step air pressure control, the passenger is prompted to clear the ear in a short time T1, the ear fullness is resolved by the ear clearing, and thereafter, the passenger can ascend/descend with the elevator car 102 comfortably until arriving at the arrival floor.
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: April 28, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Keigo Yamamoto, Masaji Iida, Toshiya Suzuki
  • Publication number: 20110171895
    Abstract: An elevator apparatus includes an elevator car; an air blower including an air inlet and an air outlet; ducts each having one end individually connected to the elevator car, the air inlet and the air outlet; intake and exhaust air volume adjusting means having the other end of each of the ducts connected thereto, which adjusts an intake and exhaust volume of air in the elevator car by varying a volume of air that bypasses the car to flow from the air outlet to the air inlet of the air blower; and control means that controls the intake and exhaust air volume adjusting means, to adjust air pressure within the car to set air pressure. The elevator apparatus adjusts air pressure within the elevator car, even when there is a small differential pressure between the set air pressure within the car and an air pressure outside the car.
    Type: Application
    Filed: November 12, 2008
    Publication date: July 14, 2011
    Inventors: Makoto Tanishima, Shinji Nakashima, Keigo Yamamoto, Masaji Iida
  • Publication number: 20100267322
    Abstract: It is an object to ease discomfort feeling caused by ear fullness for passengers of an elevator. An air pressure control device 104 controls an air pressure in an elevator car 102 using an air pressure adjusting device 105 such as a blower, an air compressor, etc. In the air pressure control device 104, a departure/arrival control unit 121 largely changes the air pressure in the elevator car 102 in the first period which is a time zone at the time of departing from a departure floor (or at the time of arriving at an arrival floor), and an except departure/arrival control unit 122 slightly changes the air pressure in the elevator car 102 in the subsequent second period (or in a time period until arrival). By this 2-step air pressure control, the passenger is prompted to clear the ear in a short time T1, the ear fullness is resolved by the ear clearing, and thereafter, the passenger can ascend/descend with the elevator car 102 comfortably until arriving at the arrival floor.
    Type: Application
    Filed: November 9, 2007
    Publication date: October 21, 2010
    Applicant: Mitsubishi Electric Corporation
    Inventors: Keigo Yamamoto, Masaji Iida, Toshiya Suzuki
  • Patent number: D687569
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: August 6, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takashi Ishida, Toshiya Suzuki, Masaji Iida, Masahiro Kondo
  • Patent number: D687570
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: August 6, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takashi Ishida, Toshiya Suzuki, Masaji Iida, Masahiro Kondo
  • Patent number: D695910
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: December 17, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takashi Ishida, Toshiya Suzuki, Masaji Iida, Masahiro Kondo
  • Patent number: D695911
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: December 17, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takashi Ishida, Toshiya Suzuki, Masaji Iida, Masahiro Kondo
  • Patent number: D696420
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: December 24, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takashi Ishida, Toshiya Suzuki, Masaji Iida, Masahiro Kondo
  • Patent number: D696421
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: December 24, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takashi Ishida, Toshiya Suzuki, Masaji Iida, Masahiro Kondo
  • Patent number: D698461
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: January 28, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takashi Ishida, Toshiya Suzuki, Masaji Iida, Masahiro Kondo