Patents by Inventor Keiko Ozawa

Keiko Ozawa 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 car frame with integral controller
    Publication number: 20040035647
    Abstract: A main body 17 of controller box 16 is attached to the lower surface of upper frame 15 of car frame 11 such that it can slide freely, and upper frame 15 is configured such that it constitutes a part of a wall of controller box 16.
    Type: Application
    Filed: August 11, 2003
    Publication date: February 26, 2004
    Applicant: Otis Elevator Company
    Inventors: Hideki Arai, Keiko Ozawa, Hideki Ito
  • Elevator door apparatus
    Patent number: 6374952
    Abstract: A car cam and locking roller locking structure that opens and closes elevator doors so that the lateral sliding of the car will not affect the opening of the doors. The invention is a mechanism to open and close elevator doors that is used to start the opening and closing operation of car door (1) and boarding entrance door (13) by moving forward end (4a) of car cam (4) furnished for car door (1) forward between a pair of locking rollers (14a) and (14b) furnished for boarding entrance door (13) so that it nearly touches locking roller (14a), while at the same time moving the other locking roller (14b) to grip car cam (4). Step-shaped part (40) is formed in locking roller (14b), and at the same time, catch (50), which catches the step-shaped part (40) to prevent its coming loose, is formed in car cam (4).
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: April 23, 2002
    Assignee: Otis Elevator Company
    Inventors: Hideki Itoh, Keiko Ozawa
  • Elevator door apparatus
    Publication number: 20010003319
    Abstract: A car cam and locking roller locking structure that opens and closes elevator doors so that the lateral sliding of the car will not affect the opening of the doors.
    Type: Application
    Filed: December 7, 2000
    Publication date: June 14, 2001
    Inventors: Hideki Itoh, Keiko Ozawa