Patents by Inventor Takefumi Deyama

Takefumi Deyama 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).

  • Power steering apparatus
    Patent number: 6467567
    Abstract: When a steering wheel is relatively quickly turned at the time of parking, before a first stopper mechanism located between an input shaft and an output shaft is operated, an elastic member 47 attached to a movement end of a rack shaft 13 comes into contact with a rack stopper 39 of a rack housing 14, thereby absorbing the impact at the time of steering at parking. That is, the strike speed when contact portions of the first stopper mechanism are brought into contact with each other, is slowed down. Accordingly, the uncomfortable noise due to the strike sound is not given to the driver.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: October 22, 2002
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Masanori Kobayashi, Kouji Ogushi, Takefumi Deyama, Etsuro Kitami, Hiroaki Murakami, Teruo Tsutsui, Takashi Tsutsui
  • Power steering apparatus
    Publication number: 20010001932
    Abstract: When a steering wheel is relatively quickly turned at the time of parking, before a first stopper mechanism located between an input shaft and an output shaft is operated, an elastic member 47 attached to a movement end of a rack shaft 13 comes into contact with a rack stopper 39 of a rack housing 14, thereby absorbing the impact at the time of steering at parking. That is, the strike speed when contact portions of the first stopper mechanism are brought into contact with each other, is slowed down. Accordingly, the uncomfortable noise due to the strike sound is not given to the driver.
    Type: Application
    Filed: November 29, 2000
    Publication date: May 31, 2001
    Inventors: Masanori Kobayashi, Kouji Ogushi, Takefumi Deyama, Etsuro Kitami, Hiroaki Murakami, Teruo Tsutsui, Takashi Tsutsui