Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Hideki Miyahara

Kazuhiro Yoshikawa

Eiji Ando

Yoshinao Takahashi

Naoyuki Maruyama

Yoshihiko Koizumi

Hironobu Kamada

Takahide Ishiguro

Kazuhiro Sasaki

Kazuya Shindo

Hiroaki Iwasaki

Hidetoshi Ninomiya

Takashi Natsume

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.

Elevator car upper handrail apparatus

In an elevator refurbishing method in which a hydraulic elevator in which a hydraulic jack is installed in an equipment installation zone is refurbished into a machine-roomless elevator that uses a two-to-one (2:1) roping method, the equipment installation zone being a region inside a hoistway on either a left side or a right side of a car when viewed from directly above, at least one guide rail from a pair of counterweight guide rails is installed in the equipment installation zone while leaving the hydraulic jack in position, the hydraulic jack is removed from the hoistway, the hoisting machine is installed in a lower portion of the equipment installation zone using a space that is created by removal of the hydraulic jack, and a car return sheave and a counterweight return sheave are installed on an upper portion of the counterweight guide rails.

Elevator refurbishing method

Growing community of inventors

Chiyoda-ku, Japan

Hideki Miyahara