Patents by Inventor Seinosuke Yahiro

Seinosuke Yahiro 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: 5458216
    Abstract: An elevator apparatus having an easily mountable position detector and capable of detecting the position of a car with good precision. The apparatus has a position detector and a governor driven by a cable connected to an emergency stop device mounted on a car and capable of actuating the emergency stop device when the speed of the car has exceeded a prescribed speed, the position detector being driven by the governor, the apparatus includes a power transmission mechanism for causing rotation of the position detector at a speed higher than the speed of rotation of the governor.
    Type: Grant
    Filed: September 16, 1993
    Date of Patent: October 17, 1995
    Assignees: Hitachi, Ltd., Hitachi Building Systems Engineering & Services Co., Ltd.
    Inventors: Masakatsu Tanaka, Seinosuke Yahiro, Jun Sugahara, Satoru Sasaki
  • Patent number: 4050547
    Abstract: An elevator system is provided with a floor controller for controlling the speed of a car. One typical form of floor controller is composed of a synchronizer operated on a reduced scale in synchronism with the movement of an elevator car, an advancer which moves in advance of the synchronizer and stops when it detects a call, and a difference detector which moves in accordance with the relative distance between the synchronizer and the advancer for controlling the running speed of the elevator car in accordance with its own position. When a call is generated, the advancer must be driven in advance of the synchronizer in the direction selected by a direction selector separately provided. For this purpose, an electric motor for driving the advancer is provided, but it need not drive the advancer directly.
    Type: Grant
    Filed: March 3, 1976
    Date of Patent: September 27, 1977
    Assignee: Hitachi, Ltd.
    Inventors: Hiroyuki Kataoka, Seinosuke Yahiro, Kazuo Suzuki