Patents by Inventor Takami Koyama

Takami Koyama 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).

  • Elevator device and roller guide assembly
    Patent number: 9434579
    Abstract: An exemplary roller guide assembly for an elevator device comprises a shaft supporting a roller for engaging a guide rail, a shaft support member that receives the shaft therein, and a member inserted between the shaft and the aforementioned shaft support member. According to this invention, because the shaft is supported by the shaft support member via the elastic member, when the rollers are biased in the horizontal direction by the guide rail, the member limits the shaft from turning relative to the shaft support member.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: September 6, 2016
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Hideki Arai, Takami Koyama, Tsuyoshi Sekine, Hideki Nakano
  • Elevator device and roller guide assembly
    Patent number: 9382098
    Abstract: An elevator car (1) which moves vertically along the hoistway is provided with a roller guide assembly (3) guided by a guide rail (2). The roller guide assembly (3) is provided with a horizontal fixing shaft (8) which is fixed to a base member (6) and rollers (5a, 5b, 5c) which are supported by the horizontal fixing shaft (8). The rollers (5a, 5b, 5c) are each provided with a roller outer circumference section (10), a rolling bearing (9), an annular rubber (11), and an inner cylinder (12). The configuration eliminates the need for a conventional spring or a conventional damper mechanism because the rubber (11) deforms elastically.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: July 5, 2016
    Assignee: Nippon Otis Elevator Company
    Inventors: Hideki Arai, Takami Koyama, Tsuyoshi Sekine, Hideki Nakano, Kota Ojima
  • ELEVATOR DEVICE AND ROLLER GUIDE ASSEMBLY
    Publication number: 20140158473
    Abstract: An elevator car (1) which moves vertically along the hoistway is provided with a roller guide assembly (3) guided by a guide rail (2). The roller guide assembly (3) is provided with a horizontal fixing shaft (8) which is fixed to a base member (6) and rollers (5a, 5b, 5c) which are supported by the horizontal fixing shaft (8). The rollers (5a, 5b, 5c) are each provided with a roller outer circumference section (10), a rolling bearing (9), an annular rubber (11), and an inner cylinder (12). The configuration eliminates the need for a conventional spring or a conventional damper mechanism because the rubber (11) deforms elastically.
    Type: Application
    Filed: June 26, 2012
    Publication date: June 12, 2014
    Applicant: NIPPON OTIS ELEVATOR COMPANY
    Inventors: Hideki Arai, Takami Koyama, Tsuyoshi Sekine, Hideki Nakano, Kota Ojima
  • Elevator Device And Roller Guide Assembly
    Publication number: 20140102833
    Abstract: An exemplary roller guide assembly for an elevator device comprises a shaft supporting a roller for engaging a guide rail, a shaft support member that receives the shaft therein, and a member inserted between the shaft and the aforementioned shaft support member. According to this invention, because the shaft is supported by the shaft support member via the elastic member, when the rollers are biased in the horizontal direction by the guide rail, the member limits the shaft from turning relative to the shaft support member.
    Type: Application
    Filed: May 30, 2012
    Publication date: April 17, 2014
    Applicant: Otis Elevator Company
    Inventors: Hideki Arai, Takami Koyama, Tsuyoshi Sekine, Hideki Nakano