Mitsubishi Denki Kabushiki Kaisha

Yoshiki Sugiyama

Yasumasa Haruta

Shinji Yamasaki

Haruhiko Nakamura

Yasumasa Iida

Akio Iwata

Itsurou Tangiku

In a control apparatus for a passenger conveyor, passenger detecting devices provided on balustrades distinguish and monitor the absence/presence of a passenger within first zones on an entrance gate side and an exit gate side including floor boards of the entrance gate side and the exit gate side, and the absence/presence of a passenger within second zones on the entrance gate side and the exit gate side adjacent to and beyond the first zones, covering the first zones. When a passenger is detected in the second zone on the entrance gate side in a standby mode, a mode switching circuit switches the operating mode to an intermediate mode, and when a passenger is detected in the first zone on the entrance gate side in the intermediate mode, the mode switching circuit switches the operating mode to a conveying mode.

Control apparatus for passenger conveyor and passenger detecting device

An elevator hoist apparatus of the type disposed in the bottom of a hoistway has an improved structure for securing the apparatus to the wall of the hoistway. The apparatus also comprises an improved hoist drum having multiple parallel rope grooves formed in the drum so as to spiral around the drum in the same direction from one end of the other to the other. The load acting on the main ropes wrapped around these grooves is thereby equalized, increasing the safety of the apparatus. Furthermore, the ends of the main ropes are secured to the drum so that the main ropes are reliably secured even when there is no tensile force acting on the main ropes.

Elevator hoist apparatus

Growing community of inventors

Tokyo, Japan

Yoshiki Sugiyama