Title:
DOOR LOCK
Document Type and Number:
Japanese Patent JP2001003617
Kind Code:
A
Abstract:
To improve operability, and to simplify a structure.
This door lock is provided with doorknobs 5, 8 provided on the outside and inside of a door, respectively and for opening and closing the door, and a lock mechanism for obstructing the door-opening operation of the outside doorknob 8 by interlocking with the operation of the inside doorknob 5. The door-opening operation of the outside and inside doorknobs 5, 8 are set to a rotation in a fixed direction, and only the inside doorknob 5 can be turned in a reverse direction to the door opening operation. The lock mechanism is lockingly operated by the rotation in the reverse direction to the door opening operation of the inside doorknob 5.
Inventors:
ITO TOMOYOSHI
SAKURAI MASAHISA
MAMIYA ISAMU
SAKURAI MASAHISA
MAMIYA ISAMU
Application Number:
JP17578899A
Publication Date:
January 09, 2001
Filing Date:
June 22, 1999
Export Citation:
Assignee:
ATOM LIVIN TECH CO LTD
SAKURAI KINZOKU KOGYO KK
SAKURAI KINZOKU KOGYO KK
International Classes:
E05B1/00; E05B55/14; E05B55/16; E05B65/06; (IPC1-7): E05B55/14; E05B1/00; E05B65/06
Attorney, Agent or Firm:
Yoshiharu Yoshida
Previous Patent: OPENING AND CLOSING CONTROL SYSTEM FOR MANHOLE COVER
Next Patent: AUXILIARY LOCK FOR DOOR
Next Patent: AUXILIARY LOCK FOR DOOR