Patents by Inventor Hironobu KAMADA

Hironobu KAMADA 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: 11440772
    Abstract: A mechanism that allows a ladder to be moved to either a use position or a retracted position. The ladder can be moved from the retracted position to the use position with a minimal effort, and the ladder moves by itself from the use position to the retracted position. A pit ladder apparatus for an elevator according to the present invention includes a position change means to be provided in a fixing metal frame fixed to the hoistway and allowing a ladder to be moved to either the use position when the ladder is used or the retracted position for retracting the ladder when it is not used so as not to interfere with operation of the elevator.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: September 13, 2022
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Hironobu Kamada
  • Publication number: 20200039786
    Abstract: A mechanism that allows a ladder to be moved to either a use position or a retracted position. The ladder can be moved from the retracted position to the use position with a minimal effort, and the ladder moves by itself from the use position to the retracted position. A pit ladder apparatus for an elevator according to the present invention includes a position change means to be provided in a fixing metal frame fixed to the hoistway and allowing a ladder to be moved to either the use position when the ladder is used or the retracted position for retracting the ladder when it is not used so as not to interfere with operation of the elevator.
    Type: Application
    Filed: March 30, 2017
    Publication date: February 6, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventor: Hironobu KAMADA
  • Patent number: 10233054
    Abstract: An elevator car upper handrail apparatus, in which a connecting body is provided between respective ends of first and second side handrails on a landing side. The connecting body includes an opening/closing member which is rotatable between a closed position, in which a path for movement of a worker from a landing to a car upper surface is closed by the opening/closing member, and an open position, in which the path for movement is opened by the opening/closing member. The opening/closing member is configured to return automatically to the closed position. When the opening/closing member is in the closed position, the connecting body transmits an external force applied to one of the first and second side handrails in the width direction of a car to the other of the first and second side handrails.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: March 19, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takahide Ishiguro, Naoyuki Maruyama, Hironobu Kamada, Hideki Miyahara, Kazuya Shindo
  • Publication number: 20180201478
    Abstract: An elevator car upper handrail apparatus, in which a connecting body is provided between respective ends of first and second side handrails on a landing side. The connecting body includes an opening/closing member which is rotatable between a closed position, in which a path for movement of a worker from a landing to a car upper surface is closed by the opening/closing member, and an open position, in which the path for movement is opened by the opening/closing member. The opening/closing member is configured to return automatically to the closed position. When the opening/closing member is in the closed position, the connecting body transmits an external force applied to one of the first and second side handrails in the width direction of a car to the other of the first and second side handrails.
    Type: Application
    Filed: July 23, 2015
    Publication date: July 19, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takahide ISHIGURO, Naoyuki MARUYAMA, Hironobu KAMADA, Hideki MIYAHARA, Kazuya SHINDO