Hitachi, Ltd.

Masaaki Isono

Yozo Nakamura

Toshihiko Nara

Naoyuki Tanaka

Masakatsu Tanaka

Tastuhiko Takahashi

Yusho Maue

This invention discloses a hoisting apparatus for use with an elevator system including a reduction gear assembly connected to a driving electric motor and a sheave. A main rope is reeved around the sheave and a car is suspended from the rope for vertical movement. The reduction gear assembly includes a pair of large and small gears. The small and large gears are connected respectively to the input and output shafts of the reduction gear assembly and the input and output shafts are disposed in face-to-face relationship. The electric motor are connected to the input shaft while the sheave and a brake system is connected to the output shaft. One bearing of the sheave is integral with a gearbox of the reduction gear assembly, and the large gear is supported in an overhanging manner by the shaft of the sheave. This arrangement enables silent and safe operation of elevator cars.

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Ibaraki, Japan

Masaaki Isono