Patents by Inventor Tastuhiko Takahashi

Tastuhiko Takahashi 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: 5090515
    Abstract: A passenger transport installation in which a large number of people can be efficiently transported between at least two vertically-spaced places. Stations communicate with a vertical elevator passage or passages along which vehicles can move upward and downward, and the vehicles stop at the stations to allow passagers to get on and off. While passengers get on and off the vehicles at the stations, other vehicles carrying other passengers can move upward and downwardly along the elevator passage or passages.
    Type: Grant
    Filed: March 19, 1990
    Date of Patent: February 25, 1992
    Assignees: Hitachi, Ltd., Hitachi Elevayor Engineering and Service Co., Ltd.
    Inventors: Tastuhiko Takahashi, Jun Sugahara, Toshihiko Nara, Yuki Yamamoto, Yoshinari Atsumi, Hideaki Seki, Katutaro Masuda, Nobuyoshi Sato, Masanobu Itoh, Masayuki Shigeta, Eiji Ikeda, Hiroshi Kinoshita, Shinkei Kakami
  • Patent number: 5067593
    Abstract: A braking device for an elevator winding machine generates a braking force by contacting a rotary body driven by a rotary shaft of the winding machine with a brake section supported through the intermediary of an elastic body. The elastic body has a nonlinear elastic characteristic so that a starting shock to the passengers in the elevator car is prevented and the braking torque detecting accuracy is improved.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: November 26, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Masakatsu Tanaka, Masanobu Itoh, Noboru Arabori, Toshihiko Nara, Tastuhiko Takahashi, Katutaro Masuda, Mitsuo Saito
  • Patent number: 4846309
    Abstract: 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.
    Type: Grant
    Filed: March 17, 1987
    Date of Patent: July 11, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Toshihiko Nara, Tastuhiko Takahashi, Masakatsu Tanaka, Yusho Maue, Naoyuki Tanaka, Masaaki Isono, Yozo Nakamura